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Dalli J, Nguyen C, Jindal A, Epperlein J, Hardy N, Pulitano C, Warrier S, Cahill R. A feasibility study assessing quantitative indocyanine green angiographic predictors of reconstructive complications following nipple-sparing mastectomy. JPRAS Open 2024; 40:32-47. [PMID: 38425697 PMCID: PMC10904167 DOI: 10.1016/j.jpra.2024.01.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 01/21/2024] [Indexed: 03/02/2024] Open
Abstract
Introduction Immediate post-mastectomy breast reconstruction offers benefits; however, complications can compromise outcomes. Intraoperative indocyanine green fluorescence angiography (ICGFA) may mitigate perfusion-related complications (PRC); however, its interpretation remains subjective. Here, we examine and develop methods for ICGFA quantification, including machine learning (ML) algorithms for predicting complications. Methods ICGFA video recordings of flap perfusion from a previous study of patients undergoing nipple-sparing mastectomy (NSM) with either immediate or staged immediate (delayed by a week due to perfusion insufficiency) reconstructions were analysed. Fluorescence intensity time series data were extracted, and perfusion parameters were interrogated for overall/regional associations with postoperative PRC. A naïve Bayes ML model was subsequently trained on a balanced data subset to predict PRC from the extracted meta-data. Results The analysable video dataset of 157 ICGFA featured females (average age 48 years) having oncological/risk-reducing NSM with either immediate (n=90) or staged immediate (n=26) reconstruction. For those delayed, peak brightness at initial ICGFA was lower (p<0.001) and significantly improved (both quicker-onset and brighter p=0.001) one week later. The overall PRC rate in reconstructed patients (n=116) was 11.2%, with such patients demonstrating significantly dimmer (overall, p=0.018, centrally, p=0.03, and medially, p=0.04) and slower-onset (p=0.039) fluorescent peaks with shallower slopes (p=0.012) than uncomplicated patients with ICGFA. Importantly, such relevant parameters were converted into a whole field of view heatmap potentially suitable for intraoperative display. ML predicted PRC with 84.6% sensitivity and 76.9% specificity. Conclusion Whole breast quantitative ICGFA assessment reveals statistical associations with PRC that are potentially exploitable via ML.
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Affiliation(s)
- J. Dalli
- UCD Centre for Precision Surgery, School of Medicine, UCD, Dublin, Ireland
| | - C.L. Nguyen
- Department of Breast Surgery, Chris O'Brien Lifehouse, Camperdown, Australia
- Department of Surgery, Royal Prince Alfred Hospital, Camperdown, Australia
- Department of Surgery, The University of Sydney, Camperdown, Australia
| | - A. Jindal
- UCD Centre for Precision Surgery, School of Medicine, UCD, Dublin, Ireland
| | | | - N.P. Hardy
- UCD Centre for Precision Surgery, School of Medicine, UCD, Dublin, Ireland
| | - C. Pulitano
- Department of Surgery, Royal Prince Alfred Hospital, Camperdown, Australia
- Department of Surgery, The University of Sydney, Camperdown, Australia
| | - S. Warrier
- Department of Breast Surgery, Chris O'Brien Lifehouse, Camperdown, Australia
- Department of Surgery, Royal Prince Alfred Hospital, Camperdown, Australia
- Department of Surgery, The University of Sydney, Camperdown, Australia
| | - R.A. Cahill
- UCD Centre for Precision Surgery, School of Medicine, UCD, Dublin, Ireland
- Department of Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
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Kania A, Branchi V, Braun L, Verrel F, Kalff JC, Vilz TO. [Indications and surgical strategy for bowel resection in mesenteric ischemia : Resection margins considering current guidelines and literature as well as the influence of new technical possibilities]. Chirurgie (Heidelb) 2024; 95:367-374. [PMID: 38378936 DOI: 10.1007/s00104-024-02041-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/16/2024] [Indexed: 02/22/2024]
Abstract
Acute mesenteric ischemia (AMI) is still a time-critical and life-threatening clinical picture. If exploration of the abdominal cavity is necessary during treatment, an intraoperative assessment of which segments of the intestines have a sufficient potential for recovery must be made. These decisions are mostly based on purely clinical parameters, which are subject to high level of uncertainty. This review article provides an overview of how this decision-making process and the determination of resection margins can be improved using technical aids, such as laser Doppler flowmetry (LDF), indocyanine green (ICG) fluorescence angiography or hyperspectral imaging (HSI). Furthermore, this article compiles guideline recommendations on the role of laparoscopy and the value of a planned second-look laparotomy. In addition, an overview of strategies for preventing short bowel syndrome is given and other aspects, such as the timing and technical aspects of placement of a preternatural anus and an anastomosis are highlighted.
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Affiliation(s)
- Alexander Kania
- Klinik und Poliklinik für Allgemein‑, Viszeral‑, Thorax- und Gefäßchirurgie, Universitätsklinikum Bonn, Venusberg Campus 1, 53127, Bonn, Deutschland.
| | - Vittorio Branchi
- Klinik und Poliklinik für Allgemein‑, Viszeral‑, Thorax- und Gefäßchirurgie, Universitätsklinikum Bonn, Venusberg Campus 1, 53127, Bonn, Deutschland
| | - Lara Braun
- Klinik und Poliklinik für Allgemein‑, Viszeral‑, Thorax- und Gefäßchirurgie, Universitätsklinikum Bonn, Venusberg Campus 1, 53127, Bonn, Deutschland
| | - Frauke Verrel
- Klinik und Poliklinik für Allgemein‑, Viszeral‑, Thorax- und Gefäßchirurgie, Universitätsklinikum Bonn, Venusberg Campus 1, 53127, Bonn, Deutschland
| | - Jörg C Kalff
- Klinik und Poliklinik für Allgemein‑, Viszeral‑, Thorax- und Gefäßchirurgie, Universitätsklinikum Bonn, Venusberg Campus 1, 53127, Bonn, Deutschland
| | - Tim O Vilz
- Klinik und Poliklinik für Allgemein‑, Viszeral‑, Thorax- und Gefäßchirurgie, Universitätsklinikum Bonn, Venusberg Campus 1, 53127, Bonn, Deutschland
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Hashizume N, Yoneda A, Ozeki G, Saito T, Fujiogi M, Kano M, Yamamoto Y, Ishimaru T, Kanamori Y, Fujino A. Outcomes of nonrejection in weakly fluorescent intestine detected by indocyanine green fluorescence angiography: a case series of infants. Surg Case Rep 2024; 10:97. [PMID: 38653822 DOI: 10.1186/s40792-024-01885-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 04/02/2024] [Indexed: 04/25/2024] Open
Abstract
BACKGROUND Indocyanine green fluorescence angiography, a validated noninvasive imaging technique, is used to assess tissue vascularization. Here, we report three infant patients who underwent intraoperative indocyanine green fluorescence angiography and suffered from postoperative complications caused by the lack of weak fluorescent intestinal resection and assessed residual intestinal perfusion. CASE PRESENTATION We observed the clinical characteristics and operative findings of patients treated from January 2022 to December 2022. Indocyanine green (0.5 mg/kg) was intravenously injected. The first patient was a 29-day-old girl with surgical necrotizing enterocolitis who underwent intraoperative indocyanine green fluorescence angiography at the first- and second-look operations. The proximal jejunum was difficult to diagnose to detect blood flow during the second-look operation. The second patient was a 32-day-old boy with surgical necrotizing enterocolitis. A part of the antimesenteric mucosa of the patient that exhibited weak fluorescence was preserved; however, it formed postoperative hematomas. The third patient was a 30-day-old boy with midgut volvulus. Weak fluorescence in the intestinal wall was observed 5 cm of the small intestine from the ileocecal valve was preserved, but it formed a stricture, and the patient underwent ileocecal resection after 30 days. CONCLUSIONS Weak fluorescence in the intestine in infants by performing indocyanine green fluorescence angiography is associated with a high risk of non-recovering ischemic lesions and postoperative complications.
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Affiliation(s)
- Naoki Hashizume
- Division of Surgery, Department of Pediatric Surgical Specialties, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan.
- Department of Pediatric Surgery, Kurume University School of Medicine, 67 Asahimachi, Kurume, Fukuoka, 830-0011, Japan.
| | - Akihiro Yoneda
- Division of Surgery, Department of Pediatric Surgical Specialties, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan
- Division of Surgical Oncology, Children's Cancer Center, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan
| | - Genta Ozeki
- Division of Surgery, Department of Pediatric Surgical Specialties, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan
| | - Takeshi Saito
- Division of Surgery, Department of Pediatric Surgical Specialties, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan
| | - Michimasa Fujiogi
- Division of Surgery, Department of Pediatric Surgical Specialties, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan
| | - Motohiro Kano
- Division of Surgery, Department of Pediatric Surgical Specialties, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan
- Department of Pediatric Surgery, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Yuki Yamamoto
- Division of Surgery, Department of Pediatric Surgical Specialties, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan
| | - Tetsuya Ishimaru
- Division of Surgery, Department of Pediatric Surgical Specialties, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan
| | - Yutaka Kanamori
- Division of Surgery, Department of Pediatric Surgical Specialties, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan
| | - Akihiro Fujino
- Division of Surgery, Department of Pediatric Surgical Specialties, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan
- Department of Pediatric Surgery, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
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Sincavage J, Gulack BC, Zamora IJ. Indocyanine green (ICG) fluorescence-enhanced applications in pediatric surgery. Semin Pediatr Surg 2024; 33:151384. [PMID: 38245991 DOI: 10.1016/j.sempedsurg.2024.151384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
The breadth of pediatric surgical practice and variety of anatomic anomalies that characterize surgical disease in children and neonates require a unique level of operative mastery and versatility. Intraoperative navigation of small, complex, and often abnormal anatomy presents a particular challenge for pediatric surgeons. Clinical experience with fluorescent tissue dye, specifically indocyanine green (ICG), is quickly gaining widespread incorporation into adult surgical practice as a safe, non-toxic means of accurately visualizing tissue perfusion, lymphatic flow, and biliary anatomy to enhance operative speed, safety, and patient outcomes. Experience in pediatric surgery, however, remains limited. ICG-fluorescence guided surgery is poised to address the challenges of pediatric and neonatal operations for a growing breadth of surgical pathology. Fluorescent angiography has permitted intraoperative visualization of colorectal flap perfusion for complex pelvic reconstruction and anastomotic perfusion after esophageal atresia repair, while its hepatic absorption and biliary excretion has made it an excellent agent for delineating the dissection plane in the Kasai portoenterostomy and identifying both primary and metastatic hepatoblastoma lesions. Subcutaneous and intra-lymphatic ICG injection can identify iatrogenic chylous leaks and improved yields in sentinel lymph node biopsies. ICG-guided surgery holds promise for more widespread use in pediatric surgical conditions, and continued evaluation of efficacy will be necessary to better inform clinical practice and identify where to focus and develop this technical resource.
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Affiliation(s)
- John Sincavage
- Division of Pediatric Surgery, Rush University Medical Center, Chicago, IL, United States
| | - Brian C Gulack
- Division of Pediatric Surgery, Rush University Medical Center, Chicago, IL, United States
| | - Irving J Zamora
- Department of Pediatric Surgery, Monroe Carell Jr. Children's Hospital at Vanderbilt, 2200 Children's Way, Nashville, TN 37232, United States.
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LeBlanc G, Takahashi C, Huston J, Shridhar R, Meredith K. The use of indocyanine green (ICYG) angiography intraoperatively to evaluate gastric conduit perfusion during esophagectomy: does it impact surgical decision-making? Surg Endosc 2023; 37:8720-8727. [PMID: 37530987 DOI: 10.1007/s00464-023-10258-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 06/23/2023] [Indexed: 08/03/2023]
Abstract
BACKGROUND Ischemia is known to be a major contributor for anastomotic leaks and indocyanine green (ICYG) fluorescence angiography has been utilized to assess perfusion. Experienced esophageal surgeons have clinically assessed the gastric conduit with acceptable outcomes for years. We sought to examine the impact of ICYG in a surgeon's decision-making during esophagectomy. METHODS We queried a prospectively maintained database to identify patients who underwent robotic esophagectomy. Time to initial perfusion, time to maximum perfusion, and residual ischemia were measured and used as a guide to resection of residual stomach. During esophagectomy the surgeon identified the anticipated line of ischemic demarcation (LOD) prior to ICYG injection. The distance between the surgeon's LOD and ICYG LOD was measured. RESULTS We identified 312 patients who underwent robotic esophagectomy, 251 without ICYG and 61 with ICGY. There were no differences in age, sex, race, body mass index, histology, stage, or neoadjuvant therapy use between groups. The incidence of anastomotic leak did not differ between groups (non-ICYG, 5.2% vs. ICYG, 6.6%), p = 0.67. The initial perfusion time was ≥ 10 s and max perfusion was > 25 s in all the patients in the ICYG that developed anastomotic leaks. All patients were noted to have at least 1 cm of residual gastric ischemia. Fifteen patients underwent independent surgeon evaluation of the ischemic LOD prior to ICYG. Differential distances were noted in 12 (80%) patients with a mean distance between surgical line of demarcation and ICYG LOD of 0.77 cm. CONCLUSION While the implementation of ICYG during esophagectomy demonstrates no significant improvements in anastomotic leak rates compared to historical controls, surgeon's decision-making is impacted in 80% of cases resulting in additional resection of the gastric conduit. Elevated times to initial perfusion and maximum perfusion were associated with increased gastric ischemia and anastomotic leaks.
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Affiliation(s)
| | | | | | | | - Kenneth Meredith
- Florida State University College of Medicine, Sarasota, FL, USA.
- Sarasota Memorial Hospital, Sarasota, FL, USA.
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Chalopin C, Pfahl A, Köhler H, Knospe L, Maktabi M, Unger M, Jansen-Winkeln B, Thieme R, Moulla Y, Mehdorn M, Sucher R, Neumuth T, Gockel I, Melzer A. Alternative intraoperative optical imaging modalities for fluorescence angiography in gastrointestinal surgery: spectral imaging and imaging photoplethysmography. MINIM INVASIV THER 2023; 32:222-232. [PMID: 36622288 DOI: 10.1080/13645706.2022.2164469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 11/29/2022] [Indexed: 01/10/2023]
Abstract
INTRODUCTION Intraoperative near-infrared fluorescence angiography with indocyanine green (ICG-FA) is a well-established modality in gastrointestinal surgery. Its main drawback is the application of a fluorescent agent with possible side effects for patients. The goal of this review paper is the presentation of alternative, non-invasive optical imaging methods and their comparison with ICG-FA. MATERIAL AND METHODS The principles of ICG-FA, spectral imaging, imaging photoplethysmography (iPPG), and their applications in gastrointestinal surgery are described based on selected published works. RESULTS The main applications of the three modalities are the evaluation of tissue perfusion, the identification of risk structures, and tissue segmentation or classification. While the ICG-FA images are mainly evaluated visually, leading to subjective interpretations, quantitative physiological parameters and tissue segmentation are provided in spectral imaging and iPPG. The combination of ICG-FA and spectral imaging is a promising method. CONCLUSIONS Non-invasive spectral imaging and iPPG have shown promising results in gastrointestinal surgery. They can overcome the main drawbacks of ICG-FA, i.e. the use of contrast agents, the lack of quantitative analysis, repeatability, and a difficult standardization of the acquisition. Further technical improvements and clinical evaluations are necessary to establish them in daily clinical routine.
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Affiliation(s)
- Claire Chalopin
- Innovation Center Computer Assisted Surgery (ICCAS), Faculty of Medicine, Leipzig University, Leipzig, Germany
| | - Annekatrin Pfahl
- Innovation Center Computer Assisted Surgery (ICCAS), Faculty of Medicine, Leipzig University, Leipzig, Germany
| | - Hannes Köhler
- Innovation Center Computer Assisted Surgery (ICCAS), Faculty of Medicine, Leipzig University, Leipzig, Germany
| | - Luise Knospe
- Department of Visceral, Transplant, Thoracic, and Vascular Surgery, University Hospital of Leipzig AöR, Leipzig, Germany
| | - Marianne Maktabi
- Innovation Center Computer Assisted Surgery (ICCAS), Faculty of Medicine, Leipzig University, Leipzig, Germany
- Department of Electrical, Mechanical and Industrial Engineering, Anhalt University of Applied Science, Köthen (Anhalt), Germany
| | - Michael Unger
- Innovation Center Computer Assisted Surgery (ICCAS), Faculty of Medicine, Leipzig University, Leipzig, Germany
| | - Boris Jansen-Winkeln
- Department of Visceral, Transplant, Thoracic, and Vascular Surgery, University Hospital of Leipzig AöR, Leipzig, Germany
- Department of General, Visceral and Oncological Surgery, St. Georg Hospital, Leipzig, Germany
| | - René Thieme
- Department of Visceral, Transplant, Thoracic, and Vascular Surgery, University Hospital of Leipzig AöR, Leipzig, Germany
| | - Yusef Moulla
- Department of Visceral, Transplant, Thoracic, and Vascular Surgery, University Hospital of Leipzig AöR, Leipzig, Germany
| | - Matthias Mehdorn
- Department of Visceral, Transplant, Thoracic, and Vascular Surgery, University Hospital of Leipzig AöR, Leipzig, Germany
| | - Robert Sucher
- Department of Visceral, Transplant, Thoracic, and Vascular Surgery, University Hospital of Leipzig AöR, Leipzig, Germany
| | - Thomas Neumuth
- Innovation Center Computer Assisted Surgery (ICCAS), Faculty of Medicine, Leipzig University, Leipzig, Germany
| | - Ines Gockel
- Department of Visceral, Transplant, Thoracic, and Vascular Surgery, University Hospital of Leipzig AöR, Leipzig, Germany
| | - Andreas Melzer
- Innovation Center Computer Assisted Surgery (ICCAS), Faculty of Medicine, Leipzig University, Leipzig, Germany
- Institute of Medical Science and Technology (IMSAT), University of Dundee, Dundee, UK
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Ishikawa Y, Zhao L, Carrott PW, Chang AC, Lin J, Orringer MB, Lynch WR, Lagisetty KH, Wakeam E, Reddy RM. Quantitative assessment of gastric ischemic preconditioning on conduit perfusion in esophagectomy: propensity score weighting study. Surg Endosc 2023; 37:6989-6997. [PMID: 37349594 DOI: 10.1007/s00464-023-10191-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 05/30/2023] [Indexed: 06/24/2023]
Abstract
BACKGROUND Gastric ischemic preconditioning prior to esophagectomy has been studied as a method to improve gastric conduit perfusion and reduce anastomotic complications, without conclusive results. The aim of this study is to evaluate the feasibility and safety of gastric ischemic preconditioning in terms of post-operative outcomes and quantitative gastric conduit perfusion. METHODS Patients who underwent an esophagectomy with gastric conduit reconstruction between January 2015 and October 2022 at a single high-volume academic center were reviewed. Patient characteristics, surgical approach, post-operative outcomes, and indocyanine green fluorescence angiography data (ingress index for arterial inflow and ingress time for venous outflow, and the distance from the last gastroepiploic branch to the perfusion assessment point) were analyzed. Two propensity score weighting methods were used to investigate whether gastric ischemic preconditioning reduces anastomotic leaks. Multiple linear regression analysis was used to evaluate the conduit perfusion quantitatively. RESULTS There were 594 esophagectomies with gastric conduit performed, with 41 having a gastric ischemic preconditioning. Among 544 with cervical anastomoses, leaks were seen in 2/30 (6.7%) in the ischemic preconditioning group and 114/514 (22.2%) in the control group (p = 0.041). Gastric ischemic preconditioning significantly reduced anastomotic leaks on both weighting methods (p = 0.037 and 0.047, respectively). Ingress index and time of the gastric conduit with ischemic preconditioning were significantly better than those without preconditioning (p = 0.013 and 0.025, respectively) after removing the effect of the distance from the last gastroepiploic branch to the perfusion assessment point. CONCLUSION Gastric ischemic preconditioning results in a statistically significant improvement in conduit perfusion and reduction in post-operative anastomotic leaks.
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Affiliation(s)
- Yoshitaka Ishikawa
- Section of Thoracic Surgery, Department of Surgery, University of Michigan Health System, 1500 East Medical Center Drive, Ann Arbor, MI, 48109, USA
| | - Lili Zhao
- Department of Biostatistics, University of Michigan, SPH II, 1415 Washington Heights M4509, Ann Arbor, MI, 48109, USA
| | - Philip W Carrott
- Division of Thoracic Surgery, Department of Surgery, University of Virginia Health, 1240 Lee Street, Charlottesville, VA, 22903, USA
| | - Andrew C Chang
- Section of Thoracic Surgery, Department of Surgery, University of Michigan Health System, 1500 East Medical Center Drive, Ann Arbor, MI, 48109, USA
| | - Jules Lin
- Section of Thoracic Surgery, Department of Surgery, University of Michigan Health System, 1500 East Medical Center Drive, Ann Arbor, MI, 48109, USA
| | - Mark B Orringer
- Section of Thoracic Surgery, Department of Surgery, University of Michigan Health System, 1500 East Medical Center Drive, Ann Arbor, MI, 48109, USA
| | - William R Lynch
- Section of Thoracic Surgery, Department of Surgery, University of Michigan Health System, 1500 East Medical Center Drive, Ann Arbor, MI, 48109, USA
| | - Kiran H Lagisetty
- Section of Thoracic Surgery, Department of Surgery, University of Michigan Health System, 1500 East Medical Center Drive, Ann Arbor, MI, 48109, USA
| | - Elliot Wakeam
- Section of Thoracic Surgery, Department of Surgery, University of Michigan Health System, 1500 East Medical Center Drive, Ann Arbor, MI, 48109, USA
| | - Rishindra M Reddy
- Section of Thoracic Surgery, Department of Surgery, University of Michigan Health System, 1500 East Medical Center Drive, Ann Arbor, MI, 48109, USA.
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Abdelrahman H, El-Menyar A, Peralta R, Al-Thani H. Application of indocyanine green in surgery: A review of current evidence and implementation in trauma patients. World J Gastrointest Surg 2023; 15:757-775. [PMID: 37342859 PMCID: PMC10277941 DOI: 10.4240/wjgs.v15.i5.757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 01/18/2023] [Accepted: 03/27/2023] [Indexed: 05/26/2023] Open
Abstract
Background: Modern surgical medicine strives to manage trauma while improving outcomes using functional imaging. Identification of viable tissues is crucial for the surgical management of polytrauma and burn patients presenting with soft tissue and hollow viscus injuries. Bowel anastomosis after trauma-related resection is associated with a high rate of leakage. The ability of the surgeon’s bare eye to determine bowel viability remains limited, and the need for a more standardized objective assessment has not yet been fulfilled. Hence, there is a need for more precise diagnostic tools to enhance surgical evaluation and visualization to aid early diagnosis and timely management to minimize trauma-associated complications. Indocyanine green (ICG) coupled with fluorescence angiography is a potential solution for this problem. ICG is a fluorescent dye that responds to near-infrared irradiation. Methods: We conducted a narrative review to address the utility of ICG in the surgical management of patients with trauma as well as elective surgery. Discussion: ICG has many applications in different medical fields and has recently become an important clinical indicator for surgical guidance. However, there is a paucity of information regarding the use of this technology to treat traumas. Recently, angiography with ICG has been introduced in clinical practice to visualize and quantify organ perfusion under several conditions, leading to fewer cases of anastomotic insufficiency. This has great potential to bridge this gap and enhance the clinical outcomes of surgery and patient safety. However, there is no consensus on the ideal dose, time, and manner of administration nor the indications that ICG provides a genuine advantage through greater safety in trauma surgical settings. Conclusions: There is a scarcity of publications describing the use of ICG in trauma patients as a potentially useful strategy to facilitate intraoperative decisions and to limit the extent of surgical resection. This review will improve our understanding of the utility of intraoperative ICG fluorescence in guiding and assisting trauma surgeons to deal with the intraoperative challenges and thus improve the patients’ operative care and safety in the field of trauma surgery.
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Affiliation(s)
| | - Ayman El-Menyar
- Trauma and Vascular Surgery, Hamad Medical Corporation, Doha 3050, Qatar
| | - Ruben Peralta
- Trauma Surgery, Hamad Medical Corporation, Doha 3050, Qatar
| | - Hassan Al-Thani
- Trauma and Vascular Surgery, Hamad Medical Corporation, Doha 3050, Qatar
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9
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Slooter MD, van der Does de Willebois EML, Joosten JJ, Reijntjes MA, Buskens CJ, Tanis PJ, Bemelman WA, Hompes R. Fluorescence perfusion assessment of vascular ligation during ileal pouch-anal anastomosis. Tech Coloproctol 2023; 27:281-290. [PMID: 36129594 PMCID: PMC10008239 DOI: 10.1007/s10151-022-02666-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 06/29/2022] [Indexed: 10/14/2022]
Abstract
BACKGROUND Intraoperative fluorescence angiography (FA) is of potential added value during ileal pouch-anal anastomosis (IPAA), especially after vascular ligation as part of lengthening measures. In this study, time to fluorescent enhancement during FA was evaluated in patients with or without vascular ligation during IPAA. METHODS This is a retrospective cohort study of all consecutive patients that underwent FA-guided IPAA between August 2018 and December 2019 in our tertiary referral centre. Vascular ligation was defined as disruption of the ileocolic arcade or ligation of interconnecting terminal ileal branches. FA was performed before and after ileoanal anastomotic reconstruction. During FA, time to fluorescent enhancement was recorded at different sites of the pouch. RESULTS Thirty-eight patients [55.3% male, median age 45 years (IQR 24-51 years)] were included, of whom the majority (89.5%) underwent a modified-2-stage restorative proctocolectomy. Vascular ligation was performed in 15 patients (39.5%), and concerned central ligation of the ileocolic arcade in 3 cases, interconnecting branches in 10, and a combination in 2. For the entire cohort, time between indocyanine green (ICG) injection and first fluorescent signal in the pouch was 20 s (IQR 15-31 s) before and 25 s (IQR 20-36 s) after anal anastomotic reconstruction. Time from ICG injection to the first fluorescent signal at the inlet, anvil and blind loop of the pouch were non-significantly prolonged in patients that received vascular ligation. CONCLUSIONS Results from this study indicate that time to fluorescence enhancement during FA might be prolonged due to arterial rerouting through the arcade or venous outflow obstruction in case of vascular ligation.
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Affiliation(s)
- M D Slooter
- Department of Surgery, Amsterdam UMC, University of Amsterdam, Cancer Centre Amsterdam, Academic Medical Centre (AMC), Meibergdreef 9, Postbox 22660, 1100 DD, Amsterdam, The Netherlands
| | - E M L van der Does de Willebois
- Department of Surgery, Amsterdam UMC, University of Amsterdam, Cancer Centre Amsterdam, Academic Medical Centre (AMC), Meibergdreef 9, Postbox 22660, 1100 DD, Amsterdam, The Netherlands
| | - J J Joosten
- Department of Surgery, Amsterdam UMC, University of Amsterdam, Cancer Centre Amsterdam, Academic Medical Centre (AMC), Meibergdreef 9, Postbox 22660, 1100 DD, Amsterdam, The Netherlands
| | - M A Reijntjes
- Department of Surgery, Amsterdam UMC, University of Amsterdam, Cancer Centre Amsterdam, Academic Medical Centre (AMC), Meibergdreef 9, Postbox 22660, 1100 DD, Amsterdam, The Netherlands
| | - C J Buskens
- Department of Surgery, Amsterdam UMC, University of Amsterdam, Cancer Centre Amsterdam, Academic Medical Centre (AMC), Meibergdreef 9, Postbox 22660, 1100 DD, Amsterdam, The Netherlands
| | - P J Tanis
- Department of Surgery, Amsterdam UMC, University of Amsterdam, Cancer Centre Amsterdam, Academic Medical Centre (AMC), Meibergdreef 9, Postbox 22660, 1100 DD, Amsterdam, The Netherlands
| | - W A Bemelman
- Department of Surgery, Amsterdam UMC, University of Amsterdam, Cancer Centre Amsterdam, Academic Medical Centre (AMC), Meibergdreef 9, Postbox 22660, 1100 DD, Amsterdam, The Netherlands
| | - R Hompes
- Department of Surgery, Amsterdam UMC, University of Amsterdam, Cancer Centre Amsterdam, Academic Medical Centre (AMC), Meibergdreef 9, Postbox 22660, 1100 DD, Amsterdam, The Netherlands.
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10
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Le-Nguyen A, Bourque CJ, Trudeau MO, Ducruet T, Faure C, Piché N. Indocyanine green fluorescence angiography in pediatric intestinal resections: A first prospective mixed methods clinical trial. J Pediatr Surg 2023; 58:82-88. [PMID: 36357227 DOI: 10.1016/j.jpedsurg.2022.09.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 09/16/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND The aim of this study was to establish the feasibility and safety of the use of indocyanine green technology during pediatric intestinal resections. While indocyanine green fluorescence angiography (ICG-FA) has been advocated as an imaging technique to assess bowel perfusion in adults, few studies have evaluated this technology in a pediatric context. METHODS A prospective clinical trial was conducted. Patients 16 years old or younger undergoing a surgery potentially requiring an intestinal resection were eligible. Patients received a standardized intravenous injection of indocyanine green and intestinal perfusion was evaluated. The study endpoints included safety, impact on bowel resection and feasibility and acceptance of ICG-FA in this population. RESULTS From May 2020 to March 2021, 30 consecutive patients were included in this trial. Final analysis was done on 28 patients with a median age of 15.00 [6.36,85.00] weeks and weight of 5.58 [3.64,11.70] kg at surgery. Adequate fluorescence was achieved in less than one minute for all cases with an average dose of 0.14 mg/kg. No adverse event related to indocyanine green occurred. ICG-FA versus standard assessment of potential resection sites differed in 62% (95% IC 0.41-0.82) of our cases. Qualitative analysis demonstrated that 95% of the surgical team agreed that ICG-FA was safe. CONCLUSIONS The use of ICG-FA is feasible and safe for pediatric intestinal resections. Introduction of ICG-FA was simple and acceptance rates were high within the surgical team. This fluorescence imaging may be a valuable imaging technology for intestinal resections in pediatric surgery.
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Affiliation(s)
- Annie Le-Nguyen
- Division of General Surgery, Université de Montréal, Montreal, Canada
| | - Claude Julie Bourque
- Center of Excellence in Ethics and Partnership, Centre Hospitalier Universitaire Sainte-Justine, Université de Montréal, Montréal, Canada
| | - Maeve O'Neill Trudeau
- Division of Pediatric Surgery, Centre Hospitalier Universitaire Sainte-Justine, Université de Montréal, 3175 Chemin de la Côte-Sainte-Catherine, Montréal, Québec H3T 1C5, Canada
| | - Thierry Ducruet
- Unité de Recherche Clinique Appliquée, Centre Hospitalier Universitaire Sainte-Justine, Université de Montréal, Montréal, Canada
| | - Christophe Faure
- Division of Gastroenterology, Hepatology, and Nutrition, Centre Hospitalier Universitaire Sainte-Justine, Université de Montréal, Montréal, Canada
| | - Nelson Piché
- Division of Pediatric Surgery, Centre Hospitalier Universitaire Sainte-Justine, Université de Montréal, 3175 Chemin de la Côte-Sainte-Catherine, Montréal, Québec H3T 1C5, Canada.
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11
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Su G, Meng J, Li H, Cai SJ. Multimodal imaging of the course of retinal changes in acute posterior multifocal placoid pigment epitheliopathy with bilateral retinal detachment: a case report. BMC Ophthalmol 2022; 22:400. [PMID: 36207677 PMCID: PMC9547405 DOI: 10.1186/s12886-022-02624-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 09/30/2022] [Indexed: 11/10/2022] Open
Abstract
Background To report a rare case of acute posterior multifocal placoid pigment epitheliopathy (APMPPE) with a combination of serous retinal detachment, papilledema, and retinal vasculitis. Case presentation A 19-year-old male complained of floaters in both eyes with decreased vision for 4 days. The best corrected visual acuity of the right eye and the left eye were 1.1 and 0.9 (logMAR), respectively. In both eyes, inflammatory cells can be seen suspended within the vitreous, multiple yellow/white lesions can be seen near the macula, and retinal neuroepithelial detachment. Swelling of the optic disc with blurring of the disc margins, in the left eye. Optical coherence tomography (OCT): showed retinal detachment in both eyes. The patient received oral prednisone treatment. 1 week later, OCT showed absorption of subretinal fluid in the macula of both eyes his binocular vision improved to 0.1 (logMAR). During the subsequent 28-month follow-up, fundus fluorescein angiography and OCT revealed extensive and progressive pigment epithelial atrophy in both eyes, and abnormal retinal vascular perfusion in the right eye due to persistent retinal vasculitis. Although the patient's binocular visual acuity remained at 0.1 (logMAR). Conclusions In the present case of APMPPE with a combination of serous retinal detachment, papilledema, and retinal vasculitis, through the multimodal imaging, further confirming that the lesions were located in the choroid, while the pigment epithelial lesions were secondary changes.
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Affiliation(s)
- Gang Su
- Department of Ophthalmology, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Zunyi, Guizhou, 563003, China.,Guizhou Eye Hospital, Zunyi, China.,Guizhou Provincial Branch of National Eye Disease Clinical Research Center, Zunyi, China.,Special Key Laboratory of Ocular Diseases of Guizhou Province, Zunyi Medical University, Zunyi, China
| | - Jia Meng
- Department of Ophthalmology, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Zunyi, Guizhou, 563003, China
| | - Hong Li
- Department of Ophthalmology, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Zunyi, Guizhou, 563003, China.,Guizhou Eye Hospital, Zunyi, China.,Guizhou Provincial Branch of National Eye Disease Clinical Research Center, Zunyi, China.,Special Key Laboratory of Ocular Diseases of Guizhou Province, Zunyi Medical University, Zunyi, China
| | - Shan-Jun Cai
- Department of Ophthalmology, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Zunyi, Guizhou, 563003, China. .,Guizhou Eye Hospital, Zunyi, China. .,Guizhou Provincial Branch of National Eye Disease Clinical Research Center, Zunyi, China. .,Special Key Laboratory of Ocular Diseases of Guizhou Province, Zunyi Medical University, Zunyi, China.
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12
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Martinez-Onate ADJ, Martinez-Salas ADJ, Cazares-Garcia V. Fluorescence Guided Cholecystectomy by a Single Group: Initial 47 Procedures Experience in Mexico. JSLS 2022; 26:JSLS.2022.00043. [PMID: 36071995 DOI: 10.4293/jsls.2022.00043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Introduction Fluorescence guided surgery (FGS) for biliary surgery uses indocyanine green (ICG), a specific dye that is eliminated almost exclusively by the liver and biliary system, making it very useful for an adequate and safe visualization of biliary tract structures. Methods We present our experience with FGS for cholecystectomy multiport and single port, including all patients older than 18 years of age, with diagnosis of cholecystitis (acute and chronic), from October 18, 2018 to December 30, 2021. Results A total of 47 patients were managed with FGS cholecystectomy, mean age was 61.2 (± 17.7) years, 31 (65.9%) were female and 16 (34.1%) males. Twenty-four (51.1%) were emergency procedures, due to acute cholecystitis, of which 10 (41.7%) presented with an infected gallbladder (Parkland 3 to 5) and three (12.5%) presented with related acute pancreatitis, the remaining 23 (48.9%) cases were elective surgeries, due to chronic cholecystitis. Visualization of laparoscopic fluorescence of the biliary ducts was achieved in 45 of the 47 patients (95.7%). Mean time for biliary tract structures visual identification was 8 minutes and 40 seconds (± 7 minutes, 20 seconds), fluorescence allowed the visualization of biliary tract anatomical variants in two patients. Discussion The reported rate of biliary structures visualization using ICG is relatively variable, ranging from 25% to 100%, in our group it was 95.7% due to our protocol. Conclusions ICG utilization for cholecystectomy is very useful and helps for a safe procedure even in difficult surgeries, we believe that it should be used in everyday practice.
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Affiliation(s)
| | | | - Vania Cazares-Garcia
- Department of Surgery, Hospital Santa Coleta, Hospital Angeles del Pedregal, Mexico City, Mexico
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13
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Regensburger J, Rauchegger T, Loacker L, Falkner F, Feistritzer C, Teuchner B. Intermittent retinal artery occlusions as the first clinical manifestation of polycythemia vera: a case report. BMC Ophthalmol 2022; 22:221. [PMID: 35570268 PMCID: PMC9107652 DOI: 10.1186/s12886-022-02423-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 04/25/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Polycythemia vera (PV) is a myeloproliferative neoplasm with increased hemoglobin, hematocrit, platelet count and leukocytosis, resulting in increased blood viscosity. PV which is initially presenting with ocular symptoms is rare, but irreversible retinal vessel occlusions leading to the diagnosis of PV have been described in literature. CASE PRESENTATION We describe a patient with PV, initially presenting with attacks of monocular temporary loss of vision due to intermittent retinal artery occlusions of different retinal arteries. The patient was immediately treated with phlebotomy and the impaired arterial retinal perfusion could be restored without permanent retinal ischemia. We were able to document these transient arterial occlusions with fundus photography as well as fluorescein angiography. To the best of our knowledge, a case like this has never been documented before. CONCLUSION This report is pertinent, in order to raise awareness among clinicians for polycythemia vera, as it can in fact be used as a differential diagnosis for patients with retinal artery occlusion. We would like to stress that early therapy might reverse the vessel complications.
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Affiliation(s)
- Jasmin Regensburger
- Department of Ophthalmology and Optometry, Medical University Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Teresa Rauchegger
- Department of Ophthalmology and Optometry, Medical University Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Lorin Loacker
- Central Institute for Medical and Chemical Laboratory Diagnostics, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Florian Falkner
- Tyrolpath Obrist Brunhuber GmbH, Hauptplatz 4, 6511 Zams, Austria
| | - Clemens Feistritzer
- Department of Internal Medicine, Medical University Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Barbara Teuchner
- Department of Ophthalmology and Optometry, Medical University Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
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14
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Joosten JJ, Longchamp G, Khan MF, Lameris W, van Berge Henegouwen MI, Bemelman WA, Cahill RA, Hompes R, Ris F. The use of fluorescence angiography to assess bowel viability in the acute setting: an international, multi-centre case series. Surg Endosc 2022; 36:7369-7375. [PMID: 35199204 PMCID: PMC9485089 DOI: 10.1007/s00464-022-09136-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 02/13/2022] [Indexed: 11/17/2022]
Abstract
Introduction Assessing bowel viability can be challenging during acute surgical procedures, especially regarding mesenteric ischaemia. Intraoperative fluorescence angiography (FA) may be a valuable tool for the surgeon to determine whether bowel resection is necessary and to define the most appropriate resection margins. The aim of this study is to report on FA use in the acute setting and to judge its impact on intraoperative decision making. Materials and methods This is a multi-centre, retrospective case series of patients undergoing emergency abdominal surgery between February 2016 and 2021 in three general/colorectal units where intraoperative FA was performed to assess bowel viability. Primary endpoint was change of management after the FA assessment. Results A total of 93 patients (50 males, 66.6 ± 19.2 years, ASA score ≥ III in 85%) were identified and studied. Initial surgical approach was laparotomy in 66 (71%) patients and laparoscopy in 27 (29% and seven, 26% conversions). The most common aetiologies were mesenteric ischaemia (n = 42, 45%) and adhesional/herniae-related strangulation (n = 41, 44%). In 50 patients a bowel resection was performed. Overall rates of anastomosis after resection, reoperation and 30-day mortality were 48% (n = 24/50, one leak), 12% and 18%, respectively. FA changed management in 27 (29%) patients. In four patients (4% overall), resection was avoided and in 21 (23%) extra bowel length was preserved (median 50 cm of bowel saved, IQR 28–98) although three patients developed further ischaemia. FA prompted extended resection (median of 20 cm, IQR 10–50 extra bowel) in six (6%) patients. Conclusion Intraoperative use of FA impacts surgical decisions regarding bowel resection for intestinal ischaemia, potentially enabling bowel preservation in approximately one out of four patients. Prospective studies are needed to optimize the best use of this technology for this indication and to determine standards for the interpretation of FA images and the potential subsequent need for second-look surgeries. Supplementary Information The online version contains supplementary material available at 10.1007/s00464-022-09136-7.
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Affiliation(s)
- Johanna J Joosten
- Department of Surgery, Amsterdam University Medical Centres (UMC), University of Amsterdam, Cancer Centre Amsterdam, Meibergdreef 9, Amsterdam, the Netherlands
| | - Grégoire Longchamp
- Division of Digestive Surgery, University Hospitals of Geneva, 1205, Geneva, Switzerland
| | - Mohammad F Khan
- Department of Surgery, Mater Misericordiae University, Hospital, 47 Eccles Street, Dublin 7, Ireland
| | - Wytze Lameris
- Department of Surgery, Amsterdam University Medical Centres (UMC), University of Amsterdam, Cancer Centre Amsterdam, Meibergdreef 9, Amsterdam, the Netherlands
| | - Mark I van Berge Henegouwen
- Department of Surgery, Amsterdam University Medical Centres (UMC), University of Amsterdam, Cancer Centre Amsterdam, Meibergdreef 9, Amsterdam, the Netherlands
| | - Wilhelmus A Bemelman
- Department of Surgery, Amsterdam University Medical Centres (UMC), University of Amsterdam, Cancer Centre Amsterdam, Meibergdreef 9, Amsterdam, the Netherlands
| | - Ronan A Cahill
- Department of Surgery, Mater Misericordiae University, Hospital, 47 Eccles Street, Dublin 7, Ireland.,UCD Centre for Precision Surgery, University College Dublin, Dublin, Ireland
| | - Roel Hompes
- Department of Surgery, Amsterdam University Medical Centres (UMC), University of Amsterdam, Cancer Centre Amsterdam, Meibergdreef 9, Amsterdam, the Netherlands.
| | - Frédéric Ris
- Division of Digestive Surgery, University Hospitals of Geneva, 1205, Geneva, Switzerland
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15
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Huang PW, Lai CC, Hwang YS, Wu WC, Wu CH, Huang JCC, Chen YP, Liu L, Chen KJ, Yeung L. Treatment responses for branch retinal vein occlusion predicted by semi-automated fluorescein angiography quantification. BMC Ophthalmol 2022; 22:50. [PMID: 35109797 PMCID: PMC8811993 DOI: 10.1186/s12886-022-02245-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 12/17/2021] [Indexed: 11/13/2022] Open
Abstract
Backgrounds Branch retinal vein occlusion (BRVO) is one of the most important causes of visual loss in retinal vascular diseases. The aim of this study is to predict the treatment response of anti-vascular endothelial growth factor (anti-VEGF) therapy in BRVO using semi-automated quantified fluorescein angiography (FA) features. Methods This retrospective case-control study enrolled patients with BRVO who are receiving anti-VEGF therapy and have been followed up for > 1 year. Those receiving < 5 anti-VEGF injections in the first year were classified as the responsive group, while those receiving ≥5 injections were the refractory group. The FA images were subjected to semi-automated pre-processing. Fluorescein leakages at the 5-min image were represented by mean gray value over parafoveal and perifoveal regions. FA leakages and central retinal thickness (CRT) on optical coherence tomography (OCT) were used for predicting the treatment response and compared using area under receiver operating characteristic curve (AUC). Results Eighty-nine patients (56 males, 33 females, mean age 62.5 ± 10.9 years) with BRVO were enrolled. Of the 89 eyes, 47 (53%) were in the responsive group and 42 (47%) were in the refractory group. The refractory group had a significantly higher number of anti-VEGF injections in the first year (5.9 ± 1.6 versus 2.4 ± 1.2, p < 0.001) when compared with that of the responsive group. It had thicker pre-treatment CRT (p = 0.011), post-treatment best CRT (p < 0.001) and CRT at 1-year (p < 0.001). It also had a higher mean gray value over the parafoveal (p < 0.001) and the perifoveal (p < 0.001) regions. The mean gray value over perifoveal (AUC 0.846) and parafovel (AUC 0.818) had significantly larger AUC than that of the pre-treatment OCT (AUC 0.653; p = 0.005 and p = 0.016, respectively) when predicting treatment response. Conclusion The refractory group had a more severe fluorescein leakage over the parafoveal and the perifoveal regions than the responsive group had. Semi-automated quantified FA leakage can be used as a biomarker for the prediction of anti-VEGF treatment response in macular edema due to BRVO.
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Affiliation(s)
- Pei-Wei Huang
- Department of Ophthalmology, Keelung Chang Gung Memorial Hospital, No. 222, Maijin Road, Keelung, 204, Taiwan
| | - Chi-Chun Lai
- Department of Ophthalmology, Keelung Chang Gung Memorial Hospital, No. 222, Maijin Road, Keelung, 204, Taiwan
| | - Yih-Shiou Hwang
- Department of Ophthalmology, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Wei-Chi Wu
- Department of Ophthalmology, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Cheng-Hsiu Wu
- Department of Ophthalmology, Keelung Chang Gung Memorial Hospital, No. 222, Maijin Road, Keelung, 204, Taiwan
| | - Jerry Chien-Chieh Huang
- Department of Ophthalmology, Keelung Chang Gung Memorial Hospital, No. 222, Maijin Road, Keelung, 204, Taiwan
| | - Yen-Po Chen
- Department of Ophthalmology, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Laura Liu
- Department of Ophthalmology, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Kuan-Jen Chen
- Department of Ophthalmology, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Ling Yeung
- College of Medicine, Chang Gung University, Taoyuan, Taiwan.
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16
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Freund MR, Kent I, Agarwal S, Wexner SD. Use of indocyanine green fluorescence angiography during ileal J-pouch surgery requiring lengthening maneuvers. Tech Coloproctol 2022; 26:181-186. [PMID: 35091791 DOI: 10.1007/s10151-021-02557-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 11/28/2021] [Indexed: 11/25/2022]
Abstract
BACKGROUND The purpose of this study was to review whether routine usage of indocyanine green (ICG) perfusion assessment during complex ileal J-pouch surgery requiring lengthening maneuvers reduces ischemic complications. METHODS Retrospective chart review of patients with ulcerative colitis (UC) or familial adenomatous polyposis (FAP) who underwent ileal pouch-anal anastomosis (IPAA) surgery with lengthening maneuvers and intraoperative ICG assessment between January 2015 and January 2021. All patients underwent a double stapled anastomosis and were temporarily diverted. All patients underwent laparoscopic and trans-anal ICG assessment of their J-pouch and anastomosis. All J-pouches were evaluated 6 weeks after surgery via contrast enema and pouchoscopy. RESULTS One hundred fifty eight patients underwent ileal J-pouch surgery during the study period. Sixteen patients (10%) underwent lengthening maneuvers and intra-operative ICG assessment. Twelve patients underwent surgery for UC and 4 for FAP. Median age was 40.3 years and average body mass index was 24.9 kg/m2. Twelve patients underwent a two-stage procedure and the remaining underwent a three-stage procedure. 93.7% of cases were completed laparoscopically (15/16). All patients underwent scoring of the peritoneum and 43% (7/16) underwent division of the ileocolic or intermediate mesenteric vessels. There was no mortality or pouch ischemia and the leak rate was 12.5%. All patients underwent reversal after an average of 18 ± 7 weeks. CONCLUSION ICG perfusion assessment appears to be of utility in complex IPAA surgery requiring lengthening maneuvers. Its application may be associated with reduced J-pouch ischemia and leak rate in this unique setting.
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Affiliation(s)
- M R Freund
- Department of Colorectal Surgery, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd., Weston, FL, 33331, USA
| | - I Kent
- Department of Colorectal Surgery, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd., Weston, FL, 33331, USA
| | - S Agarwal
- Department of Colorectal Surgery, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd., Weston, FL, 33331, USA
| | - S D Wexner
- Department of Colorectal Surgery, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd., Weston, FL, 33331, USA.
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Emile SH, Khan SM, Wexner SD. Impact of change in the surgical plan based on indocyanine green fluorescence angiography on the rates of colorectal anastomotic leak: a systematic review and meta-analysis. Surg Endosc 2022; 36:2245-2257. [PMID: 35024926 DOI: 10.1007/s00464-021-08973-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 12/31/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND In the present study, patients with colorectal anastomoses that were assessed with indocyanine green (ICG) fluorescence angiography (FA) were compared to patients who had only white light visual inspection of their anastomosis. The impact of change in surgical plan guided by ICG-FA on anastomotic leak (AL) rates was assessed. METHODS PubMed, Scopus, Web of Science, and Cochrane Central Register of Controlled Trials were queried for eligible studies. Studies included were comparative cohort studies and randomized trials that compared perfusion assessment of colorectal anastomosis with ICG-FA and inspection under white light. Main outcome measures were change in surgical plan guided by ICG-FA and rates of AL. Risk of bias was assessed using RoB-2 and ROBINS-1 tools. Differences between the two groups in categorical and continuous variables were expressed as odds ratio (OR) with 95% confidence interval (CI) and weighted mean difference. RESULTS This systematic review included 27 studies comprising 8786 patients (48.5% males). Using ICG-FA was associated with significantly lower odds of AL (OR 0.452; 95% CI 0.366-0.558) and complications (OR 0.747; 95% CI 0.592-0.943) than the control group. The weighted mean rate of change in surgical plan based on ICG-FA was 9.6% (95% CI 7.3-11.8) and varied from 0.64% to 28.75%. A change in surgical plan was associated with significantly higher odds of AL (OR 2.73; 95% CI 1.54-4.82). LIMITATIONS Technical heterogeneity due to using different dosage of ICG and statistical heterogeneity in operative time and complication rates. CONCLUSION Assessment of colorectal anastomoses with ICG-FA is likely to be associated with lower odds of anastomotic leak than is traditional white light assessment. Change in plan based on ICG-FA may be associated with higher odds of AL. PROSPERO registration number: CRD42021235644.
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Affiliation(s)
- Sameh Hany Emile
- General Surgery Department, Mansoura University Hospitals, Mansoura University, Mansoura, 35516, Egypt. .,Department of Colorectal Surgery, Cleveland Clinic Florida, Weston, FL, USA.
| | - Sualeh Muslim Khan
- Dow Medical College, Dow University of Health Sciences, Karachi, Pakistan
| | - Steven D Wexner
- Department of Colorectal Surgery, Cleveland Clinic Florida, Weston, FL, USA
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18
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Adams ST, West C, Walsh CJ. The Role of Indocyanine Green Fluorescence Angiography in Complex Abdominal Wall Reconstruction: A Scoping Review of the Literature. J Plast Reconstr Aesthet Surg 2021; 75:674-682. [PMID: 34753685 DOI: 10.1016/j.bjps.2021.08.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 06/24/2021] [Accepted: 08/26/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Indocyanine green fluorescence angiography (ICGFA) is a technique for assessing vascularity and perfusion which has multiple proven applications across a variety of surgical procedures. Studies have been performed assessing its potential role in evaluating skin flap viability in complex abdominal wall reconstruction (CAWR) in order to avoid postoperative surgical site occurrences (SSO). OBJECTIVES This scoping review was intended to summarise the literature concerning ICGFA in CAWR in order to facilitate future evidence-based guidelines for its use. ELIGIBILITY CRITERIA Inclusion - cohort studies, randomised controlled trials, case series, case reports and ventral midline hernias only. Exclusion - patients aged under 18 years and non-human test subjects. SOURCES OF EVIDENCE PubMed, MEDLINE®, Cochrane, Embase and OpenGrey RESULTS: A total of 3416 unique titles were yielded from our search of which 9 met our inclusion criteria: 3 case reports, 1 retrospective case series, 1 prospective case series, 3 non-blinded, non-randomised retrospective case-controlled studies and 1 prospective, double-blinded randomised controlled study. The included studies varied considerably in size and method however the consensus appeared to support ICGFA as being a safe and feasible means of assessing tissue flap vascularity in CAWR. The studies returned contrasting results regarding the impact of ICGFA in predicting and avoiding SSOs however there were insufficient numbers of studies for a meta-analysis. CONCLUSIONS We identify three case reports and four lower quality studies suggesting a possible application for ICGFA in CAWR and two higher quality studies showing no overall benefit. Evidence-based guidelines on the role of ICGFA in CAWR will require the assessment of further studies.
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Affiliation(s)
- Simon T Adams
- Department of Plastic Surgery, St Helen's & Knowsley Teaching Hospitals NHS Trust; Department of General Surgery, Wirral University Teaching Hospitals (WUTH) NHS Foundation Trust.
| | - Christian West
- Department of Plastic Surgery, St Helen's & Knowsley Teaching Hospitals NHS Trust
| | - Ciaran J Walsh
- Department of General Surgery, Wirral University Teaching Hospitals (WUTH) NHS Foundation Trust
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Gockel I, Knospe L, Jansen-Winkeln B, Hennig S, Moulla Y, Niebisch S, Maktabi M, Köhler H, Chalopin C, Stehr S. [What is new… in intraoperative monitoring of gastric conduit perfusion in esophageal surgery : Intraoperative monitoring of gastric conduit perfusion with hyperspectral imaging and fluorescence angiography with indocyanine green in esophagectomy]. Anaesthesist 2021. [PMID: 34018008 DOI: 10.1007/s00101-021-00975-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/20/2021] [Indexed: 10/21/2022]
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20
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Pampiglione T, Chand M. Enhancing colorectal anastomotic safety with indocyanine green fluorescence angiography: An update. Surg Oncol 2021; 43:101545. [PMID: 33820705 DOI: 10.1016/j.suronc.2021.101545] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 03/02/2021] [Indexed: 01/02/2023]
Abstract
Reducing anastomotic leak (AL) continues to be a main focus in colorectal research. Several new technologies have been developed with an aim to reduce this from mechanical devices to advanced imaging techniques. Fluorescence angiography (FA) with indocyanine green (ICG) in colorectal surgery is now a well-established technique and may have a role in reducing AL. By using FA, we are able to have a visual representation of perfusion which aids intraoperative decision making. The main impact is change in the level of bowel transection at the proximal side of an anastomosis and provide a more objective and confident assessment of bowel perfusion. Previous studies have shown that routine FA use is safe and reproducible. Recent results from randomized control trials and meta-analyses show that FA use reduces the rate of anastomotic leak. The main limitation of FA is its lack of ability to quantify perfusion. Novel technologies are being developed that will quantify tissue perfusion and oxygenation. Overall, FA is a safe and feasible technique which may have a role in reducing AL.
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Affiliation(s)
- T Pampiglione
- Department of Surgery and Interventional Sciences, University College London, University College London Hospitals, London, UK
| | - M Chand
- Department of Surgery and Interventional Sciences, University College London, University College London Hospitals, London, UK.
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21
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Kaçmaz E, Slooter MD, Nieveen van Dijkum EJM, Tanis PJ, Engelsman AF. Fluorescence angiography guided resection of small bowel neuroendocrine neoplasms with mesenteric lymph node metastases. Eur J Surg Oncol 2021; 47:1611-1615. [PMID: 33353827 DOI: 10.1016/j.ejso.2020.12.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 11/24/2020] [Accepted: 12/13/2020] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Surgery for small bowel neuroendocrine neoplasms (SB-NEN) might result in vascular compromise of the remaining bowel due to resection of lymph node metastases in close proximity to main mesenteric vessels. Fluorescence angiography (FA) has been described as a safe technique to assess perfusion during gastro-intestinal surgery. This study aimed to evaluate the potential value of intraoperative FA during surgery for SB-NEN. METHODS This study included patients undergoing surgery for SB-NEN of any stage. The planned level of transection was marked by the surgeon, after which FA using indocyanine green (ICG) was performed. The primary study outcome was change in management due to FA. RESULTS Ten consecutive patients with SB-NEN were included, all with metastatic lymph nodes close to main mesenteric vessels. FA use led to management changes in eight patients (80%); four patients had less bowel resected with a preserved length of 5-35 cm. The other four patients had more extended bowel resections with an additional length varying from 3 to 25 cm. The median postoperative stay was 4 days (interquartile range 4-6). No anastomotic leakage occurred. CONCLUSION This is the first known series describing preliminary results of FA during SB-NEN surgery. FA led to a management change in 80% of patients with better tailoring the extent of resection of small bowel. Structural implementation of FA to assess small bowel perfusion after dissection for small bowel NET results in change of management, either by preserving small bowel or resecting ill-perfused small bowel.
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Affiliation(s)
- E Kaçmaz
- Department of Surgery, Amsterdam UMC, University of Amsterdam, the Netherlands; Cancer Center Amsterdam, Amsterdam, the Netherlands
| | - M D Slooter
- Department of Surgery, Amsterdam UMC, University of Amsterdam, the Netherlands; Cancer Center Amsterdam, Amsterdam, the Netherlands
| | - E J M Nieveen van Dijkum
- Department of Surgery, Amsterdam UMC, University of Amsterdam, the Netherlands; Cancer Center Amsterdam, Amsterdam, the Netherlands; ENETS Center of Excellence, Amsterdam UMC, University of Amsterdam, the Netherlands
| | - P J Tanis
- Department of Surgery, Amsterdam UMC, University of Amsterdam, the Netherlands; Cancer Center Amsterdam, Amsterdam, the Netherlands
| | - A F Engelsman
- Cancer Center Amsterdam, Amsterdam, the Netherlands; ENETS Center of Excellence, Amsterdam UMC, University of Amsterdam, the Netherlands; Department of Surgery, Amsterdam UMC, Vrije Universiteit Amsterdam, the Netherlands.
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22
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Zhang W, Che X. Effect of indocyanine green fluorescence angiography on preventing anastomotic leakage after colorectal surgery: a meta-analysis. Surg Today 2021; 51:1415-1428. [PMID: 33428000 DOI: 10.1007/s00595-020-02195-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 10/07/2020] [Indexed: 12/12/2022]
Abstract
Anastomotic leakage (AL) is a serious but not uncommon complication after colorectal surgery. We conducted this study to evaluate the effect of routine indocyanine green fluorescence angiography (ICG-FA) on reducing the AL rate after colorectal surgery. We identified all research articles about colorectal surgery using ICG-FA, published in the PubMed, EMBASE, and Cochrane Library databases from the date of database establishment to May 2020. Revman 5.3 was used for statistical analysis. We analyzed 22 controlled studies and 7 non-controlled studies on ICG-FA, including 6312 patients. The controlled studies included 2354 patients in the ICG group and 3522 patients in the non-ICG group. Meta-analysis showed that ICG-FA reduced the AL rate after colorectal surgery significantly (RR = 0.39; 95% CI 0.30-0.50; P < 0.00001). However, patients whose resection line was changed based on the fluorescence angiography had a higher AL rate than those whose resection line was not changed (OR = 5.37; 95% CI 2.67-10.81; P < 0.00001). The overall complication rate, severe complication rate, and reoperation rate in the ICG group were significantly lower than those in the non-ICG group (RR = 0.79, 95% CI 0.67-0.92, P = 0.002; RR = 0.67, 95% CI 0.47-0.96, P = 0.03; RR = 0.53, 95% CI 0.29-0.96, P = 0.04, respectively), whereas the postoperative ileus rate was significantly higher in the ICG group than in the non-ICG group (RR = 1.65; 95% CI 1.09-2.50; P = 0.02), especially in Western countries (RR = 1.6; 95% CI 1.04-2.47; P = 0.03).ICG-FA may reduce the AL rate after colorectal surgery, but ICG-FA group patients with transection line change for insufficient blood perfusion to the anastomotic stoma after evaluation had a higher AL rate than those without transection line change. Therefore, ICG-FA can help to identify patients at high risk of AL and intercept its occurrence. Moreover, ICG-FA may reduce the overall complication rate, severe complication rate, and reoperation rate, but induce postoperative ileus. High-quality randomized-controlled trials with a placebo control are needed to further evaluate the effectiveness and safety of ICG-FA.
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Affiliation(s)
- Wei Zhang
- Department of Pancreatic and Gastric Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 17 Panjiayuan Nanli, Chaoyang District, Beijing, 100021, China
| | - Xu Che
- Department of Pancreatic and Gastric Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 17 Panjiayuan Nanli, Chaoyang District, Beijing, 100021, China. .,Department of Hepatobiliary and Pancreatic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital and Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, 518116, China.
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23
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Vilz TO, Kalff JC, Stoffels B. [Evidence of indocyanine green fluorescence in robotically assisted colorectal surgery : What is the status?]. Chirurg 2021; 92:115-121. [PMID: 33432386 DOI: 10.1007/s00104-020-01340-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/15/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND Indocyanine green (ICG) fluorescence imaging is increasingly being used in various areas of abdominal surgery. The constant improvement in the technology enables easy intraoperative use and progressively influences operative decision-making, also in robotically assisted colorectal surgery. OBJECTIVE Summation of current evidence on the use of ICG fluorescence imaging in robotically assisted colorectal surgery. MATERIAL AND METHODS The assessment of evidence is based on a comprehensive literature search (PubMed). RESULTS First individual studies (feasibility, case matched, prospective cohort, multicenter phase II, single center randomized controlled study/trial) showed a significant reduction in the incidence of anastomotic leakage (AL) after colorectal anastomosis through the use of ICG fluorescence angiography (FA, 9.1% vs. 16.3%; p = 0.04). First feasibility studies demonstrated lymph node detection or navigation as well as ureter visualization. CONCLUSION The ICG-FA reliably detects tissue perfusion, quickly and effectively with few side effects. It can influence intraoperative decision-making and reduce AL rates. In addition, patients may be offered more precise tumor therapy via ICG sentinel lymph node (SLN) detection and lateral pelvic lymph node (LPN) mapping and navigation. Iatrogenic lesions, such as ureteral injuries can be sufficiently prevented by appropriate visualization; however, valid data in order to be able to derive standardized operative consequences require further convincing multicenter, randomized controlled trials (mRCT).
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Affiliation(s)
| | | | - B Stoffels
- Klinik und Poliklinik für Allgemein‑, Viszeral‑, Thorax- und Gefäßchirurgie, Universitätsklinikum Bonn, Venusberg-Campus 1, 53127, Bonn, Deutschland.
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24
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Pang HY, Chen XL, Song XH, Galiullin D, Zhao LY, Liu K, Zhang WH, Yang K, Chen XZ, Hu JK. Indocyanine green fluorescence angiography prevents anastomotic leakage in rectal cancer surgery: a systematic review and meta-analysis. Langenbecks Arch Surg 2021; 406:261-271. [PMID: 33409585 DOI: 10.1007/s00423-020-02077-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 12/29/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND The role of intraoperative use of indocyanine green (ICG) fluorescence angiography (ICGFA) to prevent anastomotic leakage (AL) in rectal cancer surgery remains controversial. METHODS The systematic review for studies evaluating ICGFA in patients undergoing rectal cancer surgery in PubMed, Embase, Web of Science, and the Cochrane Library was performed up to April 30, 2020. The primary outcome was the incidence of AL. The analysis was performed using RevMan v5.3 and Stata v12.0 software. RESULTS Eighteen studies comprising 4038 patients were included. In the present meta-analysis, intraoperative use of ICGFA markedly reduced AL rate (OR = 0.33; 95% CI: 0.24-0.45; P < 0.0001; I2 = 0%) in rectal cancer surgery, which was still significant in surgeries limited to symptomatic AL (OR = 0.44; 95% CI: 0.31-0.64; P < 0.0001; I2 = 22%). This intervention was also associated with shorter postoperative stays (MD = - 1.27; 95% CI: - 2.42 to - 0.13; P = 0.04; I2 = 60%). However, reoperation rate (OR = 0.61; 95% CI: 0.34-1.10; P = 0.10; I2 = 6%), ileus rate (OR = 1.30; 95% CI: 0.60-2.82; P = 0.51; I2 = 56%), and surgical site infection rate (OR = 1.40; 95% CI: 0.62-3.20; P = 0.42; I2 = 0%) were not significantly different between the two groups. CONCLUSION The use of ICGFA was associated with a lower AL rate after rectal cancer resection. However, more multi-center RCTs with large sample size are required to further verify the value of ICGFA in rectal cancer surgery.
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Affiliation(s)
- Hua-Yang Pang
- Department of Gastrointestinal Surgery and Laboratory of Gastric Cancer, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, No 37 Guo Xue Xiang Street, Chengdu, 610041, Sichuan Province, China
| | - Xiao-Long Chen
- Department of Gastrointestinal Surgery and Laboratory of Gastric Cancer, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, No 37 Guo Xue Xiang Street, Chengdu, 610041, Sichuan Province, China
| | - Xiao-Hai Song
- Department of Gastrointestinal Surgery and Laboratory of Gastric Cancer, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, No 37 Guo Xue Xiang Street, Chengdu, 610041, Sichuan Province, China
| | - Danil Galiullin
- Department of Gastrointestinal Surgery and Laboratory of Gastric Cancer, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, No 37 Guo Xue Xiang Street, Chengdu, 610041, Sichuan Province, China.,Central Research Laboratory, Bashkir State Medical University, Ufa, Russia
| | - Lin-Yong Zhao
- Department of Gastrointestinal Surgery and Laboratory of Gastric Cancer, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, No 37 Guo Xue Xiang Street, Chengdu, 610041, Sichuan Province, China
| | - Kai Liu
- Department of Gastrointestinal Surgery and Laboratory of Gastric Cancer, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, No 37 Guo Xue Xiang Street, Chengdu, 610041, Sichuan Province, China
| | - Wei-Han Zhang
- Department of Gastrointestinal Surgery and Laboratory of Gastric Cancer, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, No 37 Guo Xue Xiang Street, Chengdu, 610041, Sichuan Province, China
| | - Kun Yang
- Department of Gastrointestinal Surgery and Laboratory of Gastric Cancer, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, No 37 Guo Xue Xiang Street, Chengdu, 610041, Sichuan Province, China
| | - Xin-Zu Chen
- Department of Gastrointestinal Surgery and Laboratory of Gastric Cancer, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, No 37 Guo Xue Xiang Street, Chengdu, 610041, Sichuan Province, China
| | - Jian-Kun Hu
- Department of Gastrointestinal Surgery and Laboratory of Gastric Cancer, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, No 37 Guo Xue Xiang Street, Chengdu, 610041, Sichuan Province, China.
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25
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Lin J, Zheng B, Lin S, Chen Z, Chen S. The efficacy of intraoperative ICG fluorescence angiography on anastomotic leak after resection for colorectal cancer: a meta-analysis. Int J Colorectal Dis 2021; 36:27-39. [PMID: 32886195 DOI: 10.1007/s00384-020-03729-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/25/2020] [Indexed: 02/06/2023]
Abstract
OBJECTIVE The purpose of this study was to investigate whether intraoperative indocyanine green fluorescence angiography can reduce the incidence of anastomotic leak. METHODS Present authors conducted a systematic search of PubMed, EMBASE, and Cochrane databases for randomized controlled trials (RCTs), prospective nonrandomized trials, and retrospective trials up to March 2020. Eleven papers fulfilling the screening criteria were included. INTERVENTION Indocyanine green was injected intravenously after the division of the mesentery and colon but before anastomosis. The primary outcome measure was AL rate with at least 3 months of follow-up. Secondary outcome measure was operation time, postoperative complications, surgical site infection, reoperation, and ileus rate. The results were analyzed using STATA 12.0 software (Stata Corp, College Station, TX, USA). RESULT A total of 3137 patients were collected in 11 studies. Meta-analysis showed that compared with conventional surgery, the ICG fluorescence angiography resulted in a fewer AL rate (OR = 0.31; 95% CI 0.21 to 0.44; P < 0.0001), postoperative complications (OR = 0.70; 95% CI 0.51 to 0.96; P < 0.025), and reoperation rate (OR = 0.334; 95% CI 0.16 to 0.68; P = 0.003). Operation time (weighted mean difference - 25.162 min; 95% CI - 58.7 to 8.375; P = 0.141), surgical site infection rate (OR = 1.11; 95% CI 0.59 to 2.09; P = 0.742) did not differ between the two groups. CONCLUSION The result revealed that indocyanine green was associated with a lower anastomotic leakage rate after colorectal cancer resection. However, larger, multicentered, high-quality randomized controlled trials are needed to confirm the benefit of indocyanine green fluorescence angiography.
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Affiliation(s)
- Jiajing Lin
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Fujian Medical University, 20 Chazhong Road, Taijiang, Fuzhou, Fujian, 350004, People's Republic of China
| | - Bingqiu Zheng
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Fujian Medical University, 20 Chazhong Road, Taijiang, Fuzhou, Fujian, 350004, People's Republic of China
| | - Suyong Lin
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Fujian Medical University, 20 Chazhong Road, Taijiang, Fuzhou, Fujian, 350004, People's Republic of China
| | - Zhihua Chen
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Fujian Medical University, 20 Chazhong Road, Taijiang, Fuzhou, Fujian, 350004, People's Republic of China
| | - Shaoqin Chen
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Fujian Medical University, 20 Chazhong Road, Taijiang, Fuzhou, Fujian, 350004, People's Republic of China.
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26
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Osterkamp J, Strandby R, Nerup N, Svendsen M, Svendsen L, Achiam M. Quantitative fluorescence angiography detects dynamic changes in gastric perfusion. Surg Endosc 2020; 35:6786-6795. [PMID: 33258036 DOI: 10.1007/s00464-020-08183-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 11/17/2020] [Indexed: 02/06/2023]
Abstract
INTRODUCTION The use of Indocyanine green (ICG) fluorescence angiography (ICG-FA) is an applied method to assess visceral perfusion during surgical procedures worldwide. Further development has entailed quantification of the fluorescence signal; however, whether quantified ICG-FA can detect intraoperative changes in perfusion after hemorrhage has not been investigated previously. In this study, we investigated whether a quantification method, developed and validated in our department (q-ICG), could detect changes in gastric perfusion induced by hemorrhage and resuscitation. METHODS Ten pigs were included in the study. Specific regions of interest of the stomach were chosen, and three q-ICG measurements of gastric perfusion obtained: 20 min after completion of the laparoscopic setup (baseline), after reducing the circulating blood volume by 30%, and after reinfusion of the withdrawn blood volume. Hemodynamic variables were recorded, and blood samples were collected every 10 min during the procedure. RESULTS The reduction in blood volume generated decreased gastric perfusion (q-ICG) from baseline (p = 0.023), and gastric perfusion subsequently increased (p < 0.001) after the reintroduction of the withdrawn blood volume. Cardiac output (CO) and mean arterial blood pressure (MAP) shifted correspondingly and the gastric perfusion correlated to CO (r = 0.575, p = 0.001) and MAP (r = 0.436, p = 0.018). CONCLUSION We present a novel study showing that the q-ICG method can detect dynamic changes in local tissue perfusion induced by hemorrhage and resuscitation. As regional gastrointestinal perfusion may be significantly reduced, while hemodynamic variables such as MAP or heart rate remain stable, q-ICG may provide an objective, non-invasive method for detecting regional early ischemia, strengthening surgical decision making.
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Affiliation(s)
- Jens Osterkamp
- Department of Surgical Gastroenterology, Rigshospitalet, University Hospital of Copenhagen, Inge Lehmanns Vej 7, 2100, Copenhagen, Denmark.
| | - Rune Strandby
- Department of Surgical Gastroenterology, Rigshospitalet, University Hospital of Copenhagen, Inge Lehmanns Vej 7, 2100, Copenhagen, Denmark
| | - Nikolaj Nerup
- Department of Surgical Gastroenterology, Rigshospitalet, University Hospital of Copenhagen, Inge Lehmanns Vej 7, 2100, Copenhagen, Denmark
| | - Morten Svendsen
- Copenhagen Academy of Medical Education and Simulation, Rigshospitalet, University Hospital of Copenhagen, Blegdamsvej 9, 2100, Copenhagen, Denmark
| | - Lars Svendsen
- Department of Surgical Gastroenterology, Rigshospitalet, University Hospital of Copenhagen, Inge Lehmanns Vej 7, 2100, Copenhagen, Denmark
| | - Michael Achiam
- Department of Surgical Gastroenterology, Rigshospitalet, University Hospital of Copenhagen, Inge Lehmanns Vej 7, 2100, Copenhagen, Denmark
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27
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Eitle JF, Kupferschmid S. [Ocular ischemic syndrome : An important differential diagnosis]. Ophthalmologe 2020; 118:948-952. [PMID: 32975660 DOI: 10.1007/s00347-020-01233-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 08/28/2020] [Accepted: 09/01/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND Ocular ischemic syndrome is a rare disease, which must be considered as a differential diagnosis in cases of painful loss of vision. CASE REPORT A 63-year-old male patient presented as an emergency in our consultation with hyphemia and decompensated intraocular pressure of the right eye. The right eye had been painful for 3 weeks. Apart from nicotine abuse, no relevant pre-existing medical conditions were known. With suspected iritis, the initial treatment was performed with eye drops containing a corticosteroid. After initial improvement in symptoms, an acute deterioration occurred with decrease in visual acuity and increased pain starting 2 days previously. Biomicroscopic examination revealed rubeosis iridis with hyphemia. Due to the hyphemia the view of the fundus was greatly reduced but there were no indications for retinal bleeding. In gonioscopy a chamber angle closure was evident. Fluorescence angiography showed a significantly longer arm-retina time, a delayed arteriovenous passage, peripheral vascular leaks and reduced fluorescence of the choroid. An ocular ischemic syndrome was suspected, therefore, duplex sonography of the carotid arteries and computed tomography angiography were performed and showed complete stenosis of the right internal carotid artery and moderate stenosis of the left internal carotid artery. An intravitreal administration of anti-VEGF and panretinal laser photocoagulation were carried out. Furthermore, an evaluation of the cardiovascular risk factors was initiated as part of the interdisciplinary investigation.
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Affiliation(s)
- J F Eitle
- Bundeswehrkrankenhaus Ulm, Oberer Eselsberg 40, 89081, Ulm, Deutschland.
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28
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Benčurik V, Škrovina M, Martínek L, Bartoš J, Macháčková M, Dosoudil M, Štěpánová E, Přibylová L, Briš R, Vomáčková K. Intraoperative fluorescence angiography and risk factors of anastomotic leakage in mini-invasive low rectal resections. Surg Endosc 2020; 35:5015-5023. [PMID: 32970211 DOI: 10.1007/s00464-020-07982-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 09/14/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND One of the prerequisites for proper healing of the anastomosis after a colorectal resection is adequate blood supply to the connected intestinal segments. It has been proposed that adequate visualization of the blood flow using indocyanine green (ICG) could lead to the reduction in the incidence of anastomotic leakage (AL). The aim of this study was to assess the effectiveness of intraoperative fluorescence angiography (FA) in decreasing the incidence of AL after minimally invasive low anterior resection (LAR) with total mesorectal excision (TME) in rectal cancer patients and to determine predictors of anastomotic leak. METHODS From August 2015 to January 2019, data from 100 patients who underwent mini-invasive TME for rectal cancer using FA with indocyanine green (ICG) were prospectively collected and analyzed. They were compared with retrospectively analyzed data from a historical control group operated by one team of surgeons before the introduction of FA from November 2012 to August 2015 (100 patients). All patients from both groups were operated sequentially in one oncological center in Nový Jičín. RESULTS The incidence of AL was significantly lower in the ICG group (19% vs. 9%, p = 0.042, χ2 test). In fifteen patients in the ICG group (15%), the resection line was moved due to insufficient perfusion. Using Pearson's χ2 test, diabetes (p = 0.036) and application of a transanal drain (NoCoil) (p = 0.032) were identified as other risk factors (RFs) for AL. CONCLUSION The use of ICG to visualize tissue perfusion in low rectal resections for cancer can lead to a reduction of AL.
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Affiliation(s)
- Vladimír Benčurik
- Department of Surgery, Hospital Novy Jicin, Purkyňova 2138/16, Novy Jicin, 74101, Czech Republic. .,AGEL Research and Training Institute, Prostejov, Czech Republic.
| | - Matej Škrovina
- Department of Surgery, Hospital Novy Jicin, Purkyňova 2138/16, Novy Jicin, 74101, Czech Republic.,Department of Surgery, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc, Czech Republic.,AGEL Research and Training Institute, Prostejov, Czech Republic
| | - Lubomír Martínek
- Department of Surgery, Hospital Novy Jicin, Purkyňova 2138/16, Novy Jicin, 74101, Czech Republic.,Department of Surgery, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
| | - Jiří Bartoš
- Department of Surgery, Hospital Novy Jicin, Purkyňova 2138/16, Novy Jicin, 74101, Czech Republic
| | - Mária Macháčková
- Department of Surgery, Hospital Novy Jicin, Purkyňova 2138/16, Novy Jicin, 74101, Czech Republic
| | - Michal Dosoudil
- Department of Surgery, Hospital Novy Jicin, Purkyňova 2138/16, Novy Jicin, 74101, Czech Republic
| | - Erika Štěpánová
- Department of Surgery, Hospital Novy Jicin, Purkyňova 2138/16, Novy Jicin, 74101, Czech Republic
| | - Lenka Přibylová
- Department of Applied Mathematics, Faculty of Electrical Engineering and Computer Science, VSB - Technical University of Ostrava, Ostrava, Czech Republic
| | - Radim Briš
- Department of Applied Mathematics, Faculty of Electrical Engineering and Computer Science, VSB - Technical University of Ostrava, Ostrava, Czech Republic
| | - Katherine Vomáčková
- Department of Surgery, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc, Czech Republic
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29
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Ito Y, Suzuki K, Ichikawa T, Watanabe Y, Sato T, Sakuma J, Saito K. Intraoperative Fluorescence Cerebral Angiography by Laser Surgical Microscopy: Comparison With Xenon Microscopy and Simultaneous Observation of Cerebral Blood Flow and Surrounding Structures. Oper Neurosurg (Hagerstown) 2020; 16:700-706. [PMID: 29897605 DOI: 10.1093/ons/opy159] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 05/24/2018] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Laser surgical microscopes should enable uniform illumination of the operative field, and require less luminous energy compared with existing xenon surgical microscopes. OBJECTIVE To examine the utility of laser illumination in fluorescence cerebral angiography. METHODS Fluorescein sodium (fluorescein) was used as a fluorescent dye. We first compared the clarity of cerebral blood flow images collected by fluorescence angiography between the laser illumination and xenon illumination methods. We then assessed use of the laser illuminator for simultaneous observation of blood flow and surrounding structures during fluorescence angiography. Furthermore, the study was designed to evaluate usefulness of the thus determined excitation light in clinical cases. RESULTS Fluorescence angiography using blue light laser for excitation provided higher clarity and contrast blood flow images compared with using blue light generated from a xenon lamp. Further, illumination with excitation light consisting of a combination of 3 types of laser (higher level of blue light, no green light, and lower level of red light) enabled both blood flow and surrounding structures to be observed through the microscope directly by the surgeon. CONCLUSION Laser-illuminated fluorescence angiography provides high clarity and contrast images of cerebral blood flow. Further, a laser providing strong blue light and weak red light for excitation light enables simultaneous visual observation of fluorescent blood flow and surrounding structures by the surgeon using a surgical microscope. Overall, these data suggest that laser surgical microscopes are useful for both ordinary operative manipulations and fluorescence angiography.
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Affiliation(s)
- Yuhei Ito
- Department of Neurosurgery, Fukushima Red Cross Hospital, Fukushima-shi, Fukushima, Japan.,Department of Neurosurgery, Fukushima Medical University, Fukushima-shi, Fukushima, Japan
| | - Kyouichi Suzuki
- Department of Neurosurgery, Fukushima Red Cross Hospital, Fukushima-shi, Fukushima, Japan
| | - Tsuyoshi Ichikawa
- Department of Neurosurgery, Fukushima Red Cross Hospital, Fukushima-shi, Fukushima, Japan
| | - Yoichi Watanabe
- Department of Neurosurgery, Fukushima Red Cross Hospital, Fukushima-shi, Fukushima, Japan
| | - Taku Sato
- Department of Neurosurgery, Fukushima Medical University, Fukushima-shi, Fukushima, Japan
| | - Jun Sakuma
- Department of Neurosurgery, Fukushima Medical University, Fukushima-shi, Fukushima, Japan
| | - Kiyoshi Saito
- Department of Neurosurgery, Fukushima Medical University, Fukushima-shi, Fukushima, Japan
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D'Urso A, Agnus V, Barberio M, Seeliger B, Marchegiani F, Charles AL, Geny B, Marescaux J, Mutter D, Diana M. Computer-assisted quantification and visualization of bowel perfusion using fluorescence-based enhanced reality in left-sided colonic resections. Surg Endosc. 2020;. [PMID: 32856153 DOI: 10.1007/s00464-020-07922-9] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 08/17/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Fluorescence-based enhanced reality (FLER) is a computer-based quantification method of fluorescence angiographies to evaluate bowel perfusion. The aim of this prospective trial was to assess the clinical feasibility and to correlate FLER with metabolic markers of perfusion, during colorectal resections. METHODS FLER analysis and visualization was performed in 22 patients (diverticulitis n = 17; colorectal cancer n = 5) intra- and extra-abdominally during distal and proximal resection, respectively. The fluorescence signal of indocyanine green (0.2 mg/kg) was captured using a near-infrared camera and computed to create a virtual color-coded cartography. This was overlaid onto the bowel (enhanced reality). It helped to identify regions of interest (ROIs) where samples were subsequently obtained. Resections were performed strictly guided according to clinical decision. On the surgical specimen, samplings were made at different ROIs to measure intestinal lactates (mmol/L) and mitochondria efficiency as acceptor control ratio (ACR). RESULTS The native (unquantified) fluorescent signal diffused to obvious ischemic areas during the distal appreciation. Proximally, a lower diffusion of ICG was observed. Five anastomotic complications occurred. The expected values of local capillary lactates were correlated with the measured values both proximally (3.62 ± 2.48 expected vs. 3.17 ± 2.8 actual; rho 0.89; p = 0.0006) and distally (4.5 ± 3 expected vs. 4 ± 2.5 actual; rho 0.73; p = 0.0021). FLER values correlated with ACR at the proximal site (rho 0.76; p = 0.04) and at the ischemic zone (rho 0.71; p = 0.01). In complicated cases, lactates at the proximal resection site were higher (5.8 ± 4.5) as opposed to uncomplicated cases (2.45 ± 1.5; p = 0.008). ACR was reduced proximally in complicated (1.3 ± 0.18) vs. uncomplicated cases (1.68 ± 0.3; p = 0.023). CONCLUSIONS FLER allows to image the quantified fluorescence signal in augmented reality and provides a reproducible estimation of bowel perfusion (NCT02626091).
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Rangel CM, Ortiz Á, Sánchez-Ávila R, Varón C, Cárdenas PL, Escaf LC, Jaramillo D, Rodriguez H. Ophthalmological findings in patients with leukaemia in a Colombian population. ACTA ACUST UNITED AC 2020; 96:242-250. [PMID: 32828605 DOI: 10.1016/j.oftal.2020.05.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 05/21/2020] [Accepted: 05/22/2020] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To report the ocular manifestations in patients with leukaemia. METHODS This is a retrospective, descriptive and observational study in patients with ocular manifestations of leukaemia. RESULTS A total of 14 eyes were evaluated corresponding to 8 patients (5 women and 3 men) with ocular manifestations of leukaemia. The mean age at diagnosis was 43 years (31-76 years). Six eyes corresponded to patients with acute myeloid leukaemia (AML), four eyes to acute lymphoid leukaemia (ALL), two eyes to chronic myeloid leukaemia (CML), and the remaining two belonged to patients with hairy cell leukaemia (HCL). The primary ocular findings were choroidal invasion in 12 eyes (85.7%), retinal infiltration in 4 eyes (28.6%), and neuro-ophthalmic disorders in 4 eyes (28.6%). The mean visual acuity improved from 0.689 to 0.449 (logMAR) (P=.012) after the systemic and intrathecal chemotherapy. Of the eight patients, four died from systemic complications of the underlying disease. CONCLUSIONS This is the first report of multiple ocular manifestations secondary to leukaemia in a Colombian population. It is important to keep in mind that this disease is included within the masquerade syndromes and that the ophthalmological findings that, while subtle, can also be devastating and be signs of a life-threatening disease.
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Affiliation(s)
- C M Rangel
- Retina y Vítreo, Fundación Oftalmológica de Santander-Clínica Carlos Ardila Lülle (FOSCAL), Floridablanca, Colombia
| | - Á Ortiz
- Neurooftalmología, Fundación Oftalmológica de Santander-Clínica Carlos Ardila Lülle (FOSCAL), Floridablanca, Colombia
| | - R Sánchez-Ávila
- Oftalmología, Instituto Universitario Fernández-Vega, Fundación de Investigación Oftalmológica, Universidad de Oviedo, Oviedo, España
| | - C Varón
- Retina y Vítreo, Fundación Oftalmológica de Santander-Clínica Carlos Ardila Lülle (FOSCAL), Floridablanca, Colombia
| | - P L Cárdenas
- Neurooftalmología, Fundación Oftalmológica de Santander-Clínica Carlos Ardila Lülle (FOSCAL), Floridablanca, Colombia
| | - L C Escaf
- Oftalmología, Fundación Oftalmológica de Santander-Clínica Carlos Ardila Lülle (FOSCAL), Floridablanca, Colombia.
| | - D Jaramillo
- Oftalmología, Fundación Oftalmológica de Santander-Clínica Carlos Ardila Lülle (FOSCAL), Floridablanca, Colombia
| | - H Rodriguez
- Oftalmología, Fundación Oftalmológica de Santander-Clínica Carlos Ardila Lülle (FOSCAL), Floridablanca, Colombia
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Ma F, Li T, Kozak I, Shang Q, Ma J. Novel observations in choroidal osteoma by multispectral imaging: a pilot case series. Int Ophthalmol 2020; 40:3413-3430. [PMID: 32734445 DOI: 10.1007/s10792-020-01528-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 07/20/2020] [Indexed: 12/01/2022]
Abstract
PURPOSE To identify novel tumor-specific features of ossification by using multispectral imaging (MSI) in patients diagnosed with choroidal osteoma. METHODS Six eyes of 5 patients previously diagnosed with choroidal osteoma by ocular ultrasonography and orbital computerized tomography were observed with multispectral imaging (MSI). Traditional multimodal imaging, including color fundus photograph (CFP) and enhanced depth-imaging-optical coherence tomography (EDI-OCT), fundus autofluorescence (FAF), indocyanine green angiography/fundus fluorescein angiography (ICGA/FFA), was performed. Osseous features detected by MSI such as calcification and decalcification were characterized and compared with other imaging modalities. RESULTS In all 3 eyes with calcified choroidal osteoma (100%), MSI featured by the homogeneous reflectance in 550 nm but the beehive appearance in 600-680 nm and homogenous hyper-reflectance in 780-850 nm', indicating the compact bone in the outer layers and bone trabecula in the middle layer (Sandwich sign). The pigmentary change showed high agreement between MSI and FAF. In other 3 eyes with extensive decalcification, MSI was able to differentiate the inactive portion of the osteoma from the decalcified area. The inactive portion was characterized by geographic hyper-reflective islands with higher reflectivity border (floating island sign). Decalcified portion was featured by increased definition and reflectivity from osteoma. Partial decalcification and total decalcification can be differentiated in one decalcifying eye (33.3%). MSI revealed better the presence and border of the osteoma compared with FFA, FAF and MC (100%) in all six eyes in our study. CONCLUSIONS MSI presented characteristic osseous-related features of choroidal osteoma, providing clear evidence for differentiating osteoblastic and osteoclastic regions and noncalcifying regions. It can contribute to en-face visualization of choroidal osteomas at different stages, providing new insight into the spectrum behavior of CO.
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Affiliation(s)
- Feiyan Ma
- Department of Ophthalmology, The Second Hospital of Hebei Medical University, Shijiazhaung, 050000, Hebei Province, China
| | - Tianhang Li
- Department of Ophthalmology, The Second Hospital of Hebei Medical University, Shijiazhaung, 050000, Hebei Province, China
| | - Igor Kozak
- Moorfields Eye Hospitals UAE, Abu Dhabi, United Arab Emirates
| | - Qingli Shang
- Department of Ophthalmology, The Second Hospital of Hebei Medical University, Shijiazhaung, 050000, Hebei Province, China.
| | - Jingxue Ma
- Department of Ophthalmology, The Second Hospital of Hebei Medical University, Shijiazhaung, 050000, Hebei Province, China.
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Abstract
Background Since postoperative complications after reconstructive breast surgery are often related to drastic increases of patient suffering and treatment costs, several devices were developed in order to avoid them. In this respect, the intraoperative fluorescence angiography with indocyanine green (ICG) provides promising results by detecting ischemic skin intraoperatively. Methods Women who underwent reconstructive breast surgery at the breast center at Charité between April and December 2017 were included in the analysis. General patient characteristics, medical history, type of surgery, as well as postoperative parameters, complications and patient reported outcomes were compared between patients operated using ICG fluorescence angiography and conventionally operated patients. Results Among 68 patients with breast reconstruction 36 (52.9%) were operated with the ICG angiography device and 32 (47.1%) without. No significant differences regarding patient demographics, medical history, and surgical procedure were found. Wound healing disorders occurred in 11.1% of the ICG group and in 9.4% of the control group. About 11% of both groups developed major complications which required revision surgery. Complication rates and patient reported outcome did not differ significantly. Across both groups, only the risk factor resection weight (≥ 500 g) was significantly associated with wound healing disorders (RR = 6.80; 95%CI 1.93–23.81; p = 0.022). Conclusion The purchase of a device for intraoperative ICG angiography might not be reasonable for every breast center. Further research in a larger cohort and prospective manner should be done to determine if the addition of ICG to breast reconstructive surgery in the German setting really leads to improved patient care.
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Affiliation(s)
- Friedrich Kühn
- Department of Gynecology, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.
| | - Jens-Uwe Blohmer
- Department of Gynecology, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Maria Margarete Karsten
- Department of Gynecology, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
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Nowak K, Karampinis I, Gerken ALH. Application of Fluorescent Dyes in Visceral Surgery: State of the Art and Future Perspectives. Visc Med 2020; 36:80-87. [PMID: 32355664 DOI: 10.1159/000506910] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 02/28/2020] [Indexed: 12/14/2022] Open
Abstract
Background Through the improvement and implementation of advanced intraoperative imaging, the indications for intraoperative fluorescence have spread to various fields of visceral surgery. Indocyanine green (ICG)-based fluorescence angiography and the imaging systems using this certain dye are currently the cornerstone of intraoperative, fluorescence-based medical imaging. Summary The article focuses on principles and approaches of intraoperative fluorescence in general surgery. The current clinical practice of intraoperative fluorescence and its evidence are described. Emerging new fields of application are put in a perspective. Furthermore, the technique and possible pit-falls in the performance of intraoperative ICG fluorescence angiography are described in this review article. Key Messages Overall growing evidence suggests that intraoperative fluorescence imaging delivers valuable additional information to the surgeon, which might help to perform surgery more exactly and reduce perioperative complications. Perfusion assessment can be a helpful tool when performing critical anastomoses. There is evidence from prospective and randomized trials for the benefit of intraoperative ICG fluorescence angiography during esophageal reconstruction, colorectal surgery, and surgery for mesenteric ischemia. Most studies suggest the administration of 2.5-10 mg of ICG. Standardized settings and documentation are essential. The benefit of ICG fluorescence imaging for gastrointestinal sentinel node detection and detection of liver tumors and colorectal metastases of the liver cannot clearly be estimated duo to the small number of prospective studies. Critical points in the use of intraoperative fluorescence imaging remain the low standardization and reproducibility of the results and the associated difficulty in comparing the results of the existing trials. Furthermore, little is known about the influence of hemodynamic parameters on the quantitative assessment of ICG fluorescence during surgery.
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Affiliation(s)
- Kai Nowak
- Department of Surgery, RoMed Klinikum Rosenheim, Rosenheim, Germany
| | - Ioannis Karampinis
- Department of Surgery, Universitätsmedizin Mannheim, Medical Faculty Mannheim, Mannheim, Germany
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Hasegawa H, Tsukada Y, Wakabayashi M, Nomura S, Sasaki T, Nishizawa Y, Ikeda K, Akimoto T, Ito M. Impact of intraoperative indocyanine green fluorescence angiography on anastomotic leakage after laparoscopic sphincter-sparing surgery for malignant rectal tumors. Int J Colorectal Dis 2020; 35:471-480. [PMID: 31907595 DOI: 10.1007/s00384-019-03490-0] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/11/2019] [Indexed: 02/04/2023]
Abstract
PURPOSE Whether indocyanine green fluorescence angiography (ICG-FA) during rectal surgery is effective in reducing anastomotic leakage remains unclear. This study aimed to investigate the effect of intraoperative ICG-FA on anastomotic leakage after sphincter-sparing surgery for malignant rectal tumors. METHODS This was a retrospective, single-center cohort study conducted on 852 consecutive patients who underwent laparoscopic sphincter-sparing surgery from January 2007 to June 2017 at our institution. The incidence of anastomotic leakage was compared between patients who underwent ICG-FA to determine the proximal resection margin and those in whom this technique was not performed, using logistic regression analysis, including propensity score. RESULTS A total of eight patients were excluded (one patient with previous low anterior resection and seven patients who underwent simultaneous resection for other primary cancers), resulting in 844 patients being analyzed. Before propensity score matching, 141 patients (16.7%) who underwent ICG-FA were compared with 703 patients (83.3%) in whom ICG-FA was not performed. The incidence of anastomotic leakage was 2.8% (4/141) in the ICG-FA group and 12.4% (87/703) in the control group (p = 0.001). After propensity score matching (n = 420), the patient characteristics between the two groups were well balanced, and the incidence of anastomotic leakage was 2.8% (4/141) in the ICG-FA group and 13.6% (38/279) in the control group (p = 0.001). Logistic regression analyses using propensity score showed that patients who underwent ICG-FA had significantly lower odds of anastomotic leakage. CONCLUSION Intraoperative ICG-FA is a promising method to reduce anastomotic leakage after laparoscopic rectal surgery.
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Affiliation(s)
- Hiro Hasegawa
- Department of Colorectal Surgery, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan.,Course of Advanced Clinical Research of Cancer, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yuichiro Tsukada
- Department of Colorectal Surgery, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Masashi Wakabayashi
- Biostatistics Division, Center for Research Administration and Support, National Cancer Center Hospital East, Kashiwa, Japan
| | - Shogo Nomura
- Biostatistics Division, Center for Research Administration and Support, National Cancer Center Hospital East, Kashiwa, Japan
| | - Takeshi Sasaki
- Department of Colorectal Surgery, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Yuji Nishizawa
- Department of Colorectal Surgery, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Koji Ikeda
- Department of Colorectal Surgery, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Tetsuo Akimoto
- Course of Advanced Clinical Research of Cancer, Juntendo University Graduate School of Medicine, Tokyo, Japan.,Division of Radiation Oncology and Particle Therapy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Masaaki Ito
- Department of Colorectal Surgery, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan.
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Slooter MD, Blok RD, Wisselink DD, Buskens CJ, Bemelman WA, Tanis PJ, Hompes R. Near-infrared fluorescence angiography for intra-operative assessment of pedicled omentoplasty for filling of a pelvic cavity: a pilot study. Tech Coloproctol 2019; 23:723-728. [PMID: 31432336 PMCID: PMC6736781 DOI: 10.1007/s10151-019-02048-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 07/19/2019] [Indexed: 12/28/2022]
Abstract
BACKGROUND During creation of a pedicled omentoplasty, blood flow to segments of the omentum might become compromised. If unrecognized, this can lead to omental necrosis. The purpose of this study was to investigate the potential added intra-operative value of the use of fluorescence angiography (FA) with indocyanine green (ICG) to assess omental perfusion. METHODS All consecutive patients undergoing a pedicled omentoplasty in a 6-month period (April 1 2018-October 1 2018) in a University hospital were included. The primary outcome was change in management due to FA. Secondary outcomes included the amount of additionally resected omentum, added surgical time, and quantitative fluorescent values (time to fluorescent enhancement, contrast quantification). RESULTS Fifteen patients had pelvic surgery with omentoplasty and FA. Change in management occurred in 12 patients (80%) and consisted of resecting a median of 44 g (range 12-198 g) of poorly perfused omental areas that were not visible by conventional white light. The median added surgical time for the use of FA and subsequent management was 8 min (range 3-39 min). The first fluorescent signal in the omental tissue appeared after a median of 20 s (range 9-37 s) after injection of ICG. The median signal-to-baseline ratio was 23.7 (interquartile range 12.2-29.7) in well perfused and 2.5 (interquartile range 1.7-4.0) in poorly perfused tissue. CONCLUSIONS FA of a pedicled omentoplasty allows a real-time assessment of omental perfusion and leads to change in management in 80% of the cases in this pilot study. These findings support the conduct of larger studies to determine the impact on patient outcome in this setting.
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Affiliation(s)
- M D Slooter
- Department of Surgery, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - R D Blok
- Department of Surgery, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.,LEXOR, Center for Experimental and Molecular Medicine, Oncode Institute, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - D D Wisselink
- Department of Surgery, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - C J Buskens
- Department of Surgery, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - W A Bemelman
- Department of Surgery, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - P J Tanis
- Department of Surgery, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - R Hompes
- Department of Surgery, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands. .,Department of Surgery, Amsterdam UMC, University of Amsterdam, G4, Post box 22660, 1100 DD, Amsterdam, The Netherlands.
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Rønn JH, Nerup N, Strandby RB, Svendsen MBS, Ambrus R, Svendsen LB, Achiam MP. Laser speckle contrast imaging and quantitative fluorescence angiography for perfusion assessment. Langenbecks Arch Surg 2019; 404:505-15. [PMID: 31055638 DOI: 10.1007/s00423-019-01789-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Accepted: 04/17/2019] [Indexed: 12/13/2022]
Abstract
PURPOSE Indocyanine green fluorescence angiography (ICG-FA) is an established technique for assessment of intestinal perfusion during gastrointestinal surgery, whereas quantitative ICG-FA (q-ICG) and laser speckle contrast imaging (LSCI) are relatively unproven. The study aimed to investigate whether the techniques could be applied interchangeably for perfusion assessment. METHODS Nineteen pigs underwent laparotomy, two minor resections of the small bowel, and anastomoses. Additionally, seven pigs had parts of their stomach and small intestine de-vascularized. Data was also collected from an in vivo model (inferior caval vein measurements in two additional pigs) and an ex vivo flow model, allowing for standardization of experimental flow, distance, and angulation. Q-ICG and LSCI were performed, so that regions of interest were matched between the two modalities in the analyses, ensuring coverage of the same tissue. RESULTS The overall correlation of q-ICG and LSCI evaluated in the porcine model was modest (rho = 0.45, p < 0.001), but high in tissue with low perfusion (rho = 0.74, p < 0.001). Flux values obtained by LSCI from the ex vivo flow model revealed a decreasing flux with linearly increasing distance as well as angulation to the model. The Q-ICG perfusion values obtained varied slightly with increasing distance as well as angulation to the model. CONCLUSIONS Q-ICG and LSCI cannot be used interchangeably but may supplement each other. LSCI is profoundly affected by angulation and distance. In comparison, q-ICG is minimally affected by changing experimental conditions and is more readily applicable in minimally invasive surgery.
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Karampinis I, Keese M, Jakob J, Stasiunaitis V, Gerken A, Attenberger U, Post S, Kienle P, Nowak K. Indocyanine Green Tissue Angiography Can Reduce Extended Bowel Resections in Acute Mesenteric Ischemia. J Gastrointest Surg 2018; 22:2117-2124. [PMID: 29992520 DOI: 10.1007/s11605-018-3855-1] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 06/18/2018] [Indexed: 01/31/2023]
Abstract
PURPOSE Surgical exploration and bowel resection are frequently required for treating non-occlusive mesenteric ischemia. Intraoperative evaluation of intestinal perfusion is subjective and challenging. In this feasibility study, ICG fluorescence angiography was performed in order to evaluate intestinal perfusion in patients with acute mesenteric ischemia. METHODS This is a retrospective analysis of 52 patients who were operated for acute mesenteric ischemia using ICG fluorescence angiography. Patients with occlusive disease requiring recanalization were excluded. The SPY and PinPoint imaging systems were used for open and laparoscopic surgery, respectively. Intraoperative macroscopic assessment of perfusion was compared with the ICG angiography results. RESULTS Surgical exploration was performed for ischemia of the colon (n = 12), the small bowel (n = 23), or both (n = 16). One patient had ischemia of the esophagus and stomach. All patients had a preoperative CT angiography to rule out stenosis or occlusion of the mesenteric vessels. In 18 cases (34.6%), ICG fluorescence angiography provided information that was supplemental to macroscopic evaluation, but most patients did not survive the postoperative course. However, in six of those cases (11.5%), ICG angiography led to a major change in operative strategy resulting in a significant clinical benefit for those patients. For two cases, ICG fluorescence produced false negative results. DISCUSSION ICG tissue angiography is feasible and technically reliable for evaluating intestinal perfusion in acute mesenteric ischemia and led to a significant clinical benefit in 11% of our patients. A relevant discrepancy between surgical visual assessment and fluorescence angiography was found in 35% of the cases, which may help to define resection margins more accurately and thus support surgical decision-making.
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Affiliation(s)
- Ioannis Karampinis
- Department of Surgery, Mannheim University Medical Centre, University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany.
| | - Michael Keese
- Mannheim University Medical Centre, University of Heidelberg, Mannheim, Germany
| | - Jens Jakob
- Department of Surgery, Mannheim University Medical Centre, University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | - Vytautas Stasiunaitis
- Department of Surgery, Mannheim University Medical Centre, University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | - Andreas Gerken
- Department of Surgery, Mannheim University Medical Centre, University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | - Ulrike Attenberger
- Institute of Clinical Radiology and Nuclear Medicine, Mannheim University Medical Centre, University of Heidelberg, Mannheim, Germany
| | - Stefan Post
- Department of Surgery, Mannheim University Medical Centre, University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | - Peter Kienle
- Department of Surgery, Mannheim University Medical Centre, University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | - Kai Nowak
- Department of Surgery, Mannheim University Medical Centre, University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
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Mizrahi I, de Lacy FB, Abu-Gazala M, Fernandez LM, Otero A, Sands DR, Lacy AM, Wexner SD. Transanal total mesorectal excision for rectal cancer with indocyanine green fluorescence angiography. Tech Coloproctol 2018; 22:785-791. [PMID: 30430309 DOI: 10.1007/s10151-018-1869-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Accepted: 10/15/2018] [Indexed: 12/18/2022]
Abstract
BACKGROUND The aim of this study was to evaluate the impact of fluorescence angiography (FA) on any change in proximal resection margin and/or anastomotic leak (AL) following transanal total mesorectal excision (TaTME) for rectal cancer (RC). METHODS This retrospective cohort study was conducted at two centers by three senior surgeons. Both institutions' prospectively maintained Institutional Review Board-approved databases were retrospectively queried for all consecutive patients between July 2015 and May 2017 who had laparoscopic hybrid trans-abdominal total mesorectal excision (TME) and TaTME for RC with colorectal or coloanal anastomosis < 10 cm from the anal verge. All patients had intraoperative FA to assess colonic perfusion of the planned proximal resection margin before bowel transection and after construction of the anastomosis. Primary outcomes measured any changes in proximal resection margins and AL rates. RESULTS Fifty-four patients (31 males; mean age 63 ± 12 years) were included; 30 (55%) of whom received neoadjuvant chemoradiation. The average anastomotic height was 3.6 cm from the anal verge and 8 (14.5%) patients required intersphincteric dissection. Forty-six patients (85%) had loop ileostomy. FA led to a change in the proximal resection margin in 10 patients (18.5%), one of whom had AL on postoperative day 3 requiring diagnostic laparoscopy and loop ileostomy. A second patient, without a change in the proximal resection margin, also had an AL. The overall AL rate was 3.7%. CONCLUSIONS FA changed the planned proximal resection margin in 18.5% of patients, possibly accounting for the relatively low AL rate. FA is imperfect, and subjective but does have the potential to improve outcomes.
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Affiliation(s)
- I Mizrahi
- Department of Colorectal Surgery, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd, Weston, FL, 33331, USA
| | - F B de Lacy
- Department of Gastrointestinal Surgery, Institute of Digestive and Metabolic Diseases, Hospital Clinic, IDIBAPS, Barcelona, Spain
| | - M Abu-Gazala
- Department of Colorectal Surgery, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd, Weston, FL, 33331, USA
| | - L M Fernandez
- Department of Colorectal Surgery, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd, Weston, FL, 33331, USA
| | - A Otero
- Department of Gastrointestinal Surgery, Institute of Digestive and Metabolic Diseases, Hospital Clinic, IDIBAPS, Barcelona, Spain
| | - D R Sands
- Department of Colorectal Surgery, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd, Weston, FL, 33331, USA
| | - A M Lacy
- Department of Gastrointestinal Surgery, Institute of Digestive and Metabolic Diseases, Hospital Clinic, IDIBAPS, Barcelona, Spain
| | - S D Wexner
- Department of Colorectal Surgery, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd, Weston, FL, 33331, USA.
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Nerup N, Ring LL, Strandby RB, Egeland C, Svendsen MBS, Hasselby JP, Willemoe GL, Hartmann B, Svendsen LB, Achiam MP. Quantitative perfusion assessment of intestinal anastomoses in pigs treated with glucagon-like peptide 2. Langenbecks Arch Surg 2018; 403:881-9. [PMID: 30338374 DOI: 10.1007/s00423-018-1718-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 10/03/2018] [Indexed: 12/17/2022]
Abstract
PURPOSE Despite exhaustive research and improvement of techniques, anastomotic leakage remains a frequent complication in gastrointestinal surgery. As leakage is associated with poor perfusion, reliable objective methods to assess anastomotic perfusion are highly demanded. In addition, such methods enable evaluation of interventions that may improve anastomotic perfusion. Glucagon-like peptide 2 (GLP-2) is an enteroendocrine hormone that regulates mid-gut perfusion. In the present study, we aimed to explore if quantitative perfusion assessment with indocyanine green (q-ICG) could detect an increase in porcine anastomotic perfusion after treatment with GLP-2. METHODS Nineteen pigs had two small bowel resections followed by anastomosis. Blinded to all investigators, animals were randomized to receive GLP-2 or placebo. Anastomotic perfusion was assessed at baseline, 30 min after injection of GLP-2/placebo, and after 5 days of treatment. Anastomotic strength and healing were evaluated by bursting pressure and histology. RESULTS Q-ICG detected a significantly higher increase in anastomotic perfusion (p < 0.05) in animals treated with GLP-2, compared with placebo. No significant differences in anastomotic strength or healing were found. CONCLUSIONS Q-ICG is a promising tool for perfusion assessment in gastrointestinal surgery and opens new opportunities in research of factors that may influence anastomotic healing, but further research is warranted to evaluate the effects of GLP-2 on anastomotic healing.
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Quero G, Lapergola A, Barberio M, Seeliger B, Saccomandi P, Guerriero L, Mutter D, Saadi A, Worreth M, Marescaux J, Agnus V, Diana M. Discrimination between arterial and venous bowel ischemia by computer-assisted analysis of the fluorescent signal. Surg Endosc 2019; 33:1988-97. [PMID: 30327913 DOI: 10.1007/s00464-018-6512-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 10/11/2018] [Indexed: 12/26/2022]
Abstract
BACKGROUND Arterial blood supply deficiency and venous congestion both play a role in anastomotic complications. Our aim was to evaluate a software-based analysis of the fluorescence signal to recognize the patterns of bowel ischemia. METHODS In 18 pigs, two clips were applied on the inferior mesenteric artery (group A: n = 6) or vein (group V: n = 6) or on both (group A-V: n = 6). Three regions of interest (ROIs) were identified on the sigmoid: P = proximal to the first clip; C = central, between the two clips; and D = distal to the second clip. Indocyanine Green was injected intravenously. The fluorescence signal was captured by means of a near-infrared laparoscope. The time-to-peak (seconds) and the maximum fluorescence intensity were recorded using software. A normalized fluorescence intensity unit (NFIU: 0-to-1) was attributed, using a reference card. The NFIU's over-time variations were computed every 10 min for 50 min. Capillary lactates were measured on the sigmoid at the 3 ROIs. Various machine learning algorithms were applied for ischemia patterns recognition. RESULTS The time-to-peak at the ischemic ROI C was significantly longer in group A versus V (20.1 ± 13 vs. 8.43 ± 3.7; p = 0.04) and in group A-V versus V (20.71 ± 11.6 vs. 8.43 ± 3.7; p = 0.03). The maximal NIFU at ROI C, was higher in the V group (1.01 ± 0.21) when compared to A (0.61 ± 0.11; p = 0.002) and A-V (0.41 ± 0.2; p = 0.0005). Capillary lactates at ROI C were lower in V (1.3 ± 0.6) than in A (1.9 ± 0.5; p = 0.0071), and A-V (2.6 ± 1.5; p = 0.034). The K nearest neighbor and the Linear SVM algorithms provided both an accuracy of 75% in discriminating between A versus V and 85% in discriminating A versus A-V. The accuracy dropped to 70% when the ML had to identify the ROI and the type of ischemia simultaneously. CONCLUSIONS The computer-assisted dynamic analysis of the fluorescence signal enables the discrimination between different bowel ischemia models.
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De Silva GS, Saffaf K, Sanchez LA, Zayed MA. Amputation stump perfusion is predictive of post-operative necrotic eschar formation. Am J Surg 2018; 216:540-546. [PMID: 29789123 PMCID: PMC6129216 DOI: 10.1016/j.amjsurg.2018.05.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 04/22/2018] [Accepted: 05/06/2018] [Indexed: 12/26/2022]
Abstract
Background A large proportion of patients develop poor amputation stump healing. We hypothesize that Laser-Assisted Fluorescent Angiography (LAFA) can predict inadequate tissue perfusion and healing. Methods Over an 8-month period we reviewed all patients who underwent lower extremity amputation and LAFA. We evaluated intra-operative LAFA global and segmental stump perfusion, and post-operative modified Bates-Jensen (mBJS) wound healing scores. Results In 15 patients, amputation stumps with lower global perfusion demonstrated higher mBJS (P = 0.01). Lower suture-line perfusion also correlated with more eschar formation (P < 0.001). Diabetic patients had higher mBJS (P = 0.009), lower stump perfusion (P = 0.02), and increased eschar volume (P < 0.001). Conclusion LAFA is a useful adjunct for intra-operative stump perfusion assessment and can predict areas of poor stump healing and eschar formation. Diabetic patients seem to be at higher risk of stump eschar formation.
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Affiliation(s)
- Gayan S De Silva
- Washington University School of Medicine, Department of Surgery, Section of Vascular Surgery, St. Louis, MO, USA
| | - Khalid Saffaf
- Washington University School of Medicine, Department of Surgery, Section of Vascular Surgery, St. Louis, MO, USA
| | - Luis A Sanchez
- Washington University School of Medicine, Department of Surgery, Section of Vascular Surgery, St. Louis, MO, USA
| | - Mohamed A Zayed
- Washington University School of Medicine, Department of Surgery, Section of Vascular Surgery, St. Louis, MO, USA; Veterans Affairs St. Louis Health Care System, St. Louis, MO, USA.
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Keller DS, Boulton R, Rodriguez-Justo M, Cohen R, Chand M. A Novel Application of Indocyanine Green Immunofluorescence in Emergent Colorectal Surgery. J Fluoresc 2018; 28:487-490. [PMID: 29700776 DOI: 10.1007/s10895-018-2230-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Accepted: 04/11/2018] [Indexed: 01/06/2023]
Abstract
Here, we report on the feasibility of ICG fluorescence imaging to localize lesions in emergent minimally invasive surgery. A 49-year old female presented to the emergency department with a previously unknown malignant bowel obstruction. She was taken emergently to the operating room for a laparoscopic extended right hemicolectomy, based on tumor location from imaging. With intraoperative difficulty localizing the lesion, an on-table colonoscopy was performed. When the tumor was encountered, peritumoral ICG injections were performed, and the fluorescence lymphoscintigraphy was performed intraoperatively in an attempt to visualize the primary tumor laparoscopically. Intraoperative ICG Immunofluorescence allowed precise, real-time localization of the mass in the descending colon. This information changed the course of the operation, as a laparoscopic left hemicolectomy was then performed instead of the planned extended right hemicolectomy. The patient underwent an end-to-end anastomosis without the need for a defunctioning ileostomy. From this case, we demonstrate the use of ICG fluorescence imaging for tumor localization in the emergent setting is safe, feasible, and effective. This information gained from this technology enables real-time decision making, and can even change the operative plan in the emergent setting for the best patient outcomes. What does this paper add to the existing literature? This paper offers a novel application of an emerging technology- ICG fluorescence- that in this capacity allowed precise, real-time localization of a previously unknown mass in the emergent setting, and changed the course of the operation.
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Affiliation(s)
- Deborah S Keller
- Department of Surgery and Interventional Sciences, University College London Hospitals, 235 Euston Rd, London, NW1 2BU, UK. .,NHS Trusts, GENIE Centre, University College London, 235 Euston Rd, London, NW1 2BU, UK.
| | - Richard Boulton
- Department of Surgery and Interventional Sciences, University College London Hospitals, 235 Euston Rd, London, NW1 2BU, UK
| | | | - Richard Cohen
- Department of Surgery and Interventional Sciences, University College London Hospitals, 235 Euston Rd, London, NW1 2BU, UK
| | - Manish Chand
- Department of Surgery and Interventional Sciences, University College London Hospitals, 235 Euston Rd, London, NW1 2BU, UK.,NHS Trusts, GENIE Centre, University College London, 235 Euston Rd, London, NW1 2BU, UK
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Abstract
BACKGROUND AND OBJECTIVES A new technology involving indocyanine green (ICG) fluorescence angiography has been introduced to assess tissue perfusion and perform vascular mapping during laparoscopic surgery. The purpose of this study was to describe the use of this technology to identify the variable blood supply patterns to the stomach and gastroesophageal (GE) junction during laparoscopic sleeve gastrectomy (LSG), which may help in preserving the blood supply and preventing ischemia-related leaks. METHODS Eighty-six patients underwent LSG and were examined intraoperatively with fluorescence angiography at an academic bariatric center from January 2016 to September 2017. Before the construction of the SG, 1 mL ICG was injected intravenously, and near infrared fluorescence imaging technology was used to identify the blood supply of the stomach. Afterward, the LSG was created with attention to preserving the identified blood supply to the GE junction and gastric tube. Finally, 3 mL ICG was injected to ensure that all the pertinent blood vessels were preserved. RESULTS Eighty-six patients successfully underwent the laparoscopic procedure with no complications. The following patterns of blood supply to the GE junction were found: (1) a right-side-dominant pattern (20%), arising from the left gastric artery; (2) a right-side-accessory pattern (36%), running in the gastrohepatic ligament and comprising either an accessory hepatic artery or an accessory gastric artery; and (3) a left-side accessory pattern arising from tributaries from the left inferior phrenic artery significantly contributing to the right-side blood supply. In addition, in 10% of the cases both right and left accessory patterns were present simultaneously. CONCLUSION ICG fluorescence angiography allows determination of the major blood supply to the proximal stomach before any dissection during sleeve gastrectomy, so that an effort can be made to avoid unnecessary injury to these vessels during the procedure.
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Affiliation(s)
- Camila B Ortega
- Department of Surgery, Duke University Health System, Durham, North Carolina, USA
| | - Alfredo D Guerron
- Department of Surgery, Duke University Health System, Durham, North Carolina, USA
| | - Jin S Yoo
- Department of Surgery, Duke University Health System, Durham, North Carolina, USA
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Abstract
Critical limb ischemia (CLI) remains a challenge for an interdisciplinary therapeutic team due to chronic nonhealing wounds. Against this background, there is a necessity of quality control after revascularization. Beside the isolated evaluation of the macrocirculation by Ankle-Brachial or Toe-Brachial Index measurements, the microcirculation as an additional important factor of wound healing often remains underestimated. The following article gives an overview about the current investigation methods for noninvasive perfusion control of the CLI patient. Therefore, transcutaneous oxygen pressure (tcpO2), the “oxygen-to-see” method which is a combination of white light tissue spectrometry and laser-Doppler flowmetry, fluorescence angiography with indocyanine green, and multispectral optoacoustic tomography will be described.
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Kim T, Cho MJ, Park SJ, Han MK, Ojar DH, Oh CW, Bang JS. Successful retinal blood flow augmentation after extracranial-intracranial bypass. Acta Neurochir (Wien) 2018; 160:301-304. [PMID: 29071559 DOI: 10.1007/s00701-017-3361-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2017] [Accepted: 10/09/2017] [Indexed: 11/26/2022]
Abstract
A 61-year-old woman visited us with recent onset right-side weakness. Magnetic resonance imaging showed ischemic changes at the left internal border zone due to occlusive disease affecting the left proximal internal carotid artery. Prompt oral dual antiplatelet therapy and intravenous fluid were administered with subsequent induced hypertension and without reperfusion therapy. Although the hemiparesis was improved, she complained of a new-onset transient left-side monocular visual loss. Fluorescein angiography confirmed delayed perfusion in the left eye. We performed extracranial-intracranial bypass for flow augmentation. After bypass, the amaurosis fugax resolved. Follow-up retinal fluorescein angiography also showed improved retinal perfusion.
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Affiliation(s)
- Tackeun Kim
- Department of Neurosurgery, Seoul National University Bundang Hospital, 82, Gumi-ro 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Republic of Korea
| | - Min Jai Cho
- Department of Neurosurgery, Seoul National University Bundang Hospital, 82, Gumi-ro 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Republic of Korea
| | - Sang Jun Park
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seongnam-si, Republic of Korea
| | - Moon-Ku Han
- Department of Neurology, Seoul National University Bundang Hospital, Seongnam-si, Republic of Korea
| | - Davendra Hari Ojar
- Department of Radiology, Eric Williams Medical Science Complex, Uriah Butler Highway, Champ Fleurs, Trinidad and Tobago
| | - Chang Wan Oh
- Department of Neurosurgery, Seoul National University Bundang Hospital, 82, Gumi-ro 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Republic of Korea
| | - Jae Seung Bang
- Department of Neurosurgery, Seoul National University Bundang Hospital, 82, Gumi-ro 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Republic of Korea.
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Rother U, Lang W, Horch RE, Ludolph I, Meyer A, Gefeller O, Regus S. Pilot Assessment of the Angiosome Concept by Intra-operative Fluorescence Angiography After Tibial Bypass Surgery. Eur J Vasc Endovasc Surg 2018; 55:215-221. [PMID: 29305093 DOI: 10.1016/j.ejvs.2017.11.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Accepted: 11/26/2017] [Indexed: 12/27/2022]
Abstract
OBJECTIVES The "angiosome" concept as a model for decision making in revascularisation of patients with critical limb ischaemia (CLI) has been subject to lively discussion in recent years. The aim of this prospective pilot study was to use intra-operative fluorescence angiography to provide further data on the angiosome concept on the level of microcirculation after tibial bypass surgery. DESIGN, MATERIALS, AND METHODS This was a prospective analysis of 40 patients presenting with CLI Rutherford stage IV to VI before and after tibial bypass surgery. The macrocirculation was measured by the ankle brachial index. Skin microcirculation was assessed by intra-operative fluorescence angiography. The alteration of microcirculation was compared in direct and indirect revascularised angiosomes. Clinical follow-up investigations were performed and the wound healing rate was compared between the different revascularisation methods. RESULTS Cumulated microcirculation parameters showed a significant improvement after surgery (ingress, ingress rate p<.001). Likewise, general microcirculatory improvement was observed in each foot angiosome after revascularisation, regardless of the tibial artery revascularised. Furthermore, a comparison of the direct (DR) and the indirect revascularised (IR) angiosomes did not show a significant difference concerning the improvement of microcirculation (difference DR-IR, ingress: 1.69, 95% CI 71.73-75.11; ingress rate: 0.08, 95% CI -12.91 to 13.07). The wound healing rate was similar in both groups, although the time to wound healing was faster by on average 2.5 months in the DR group (p=.083). CONCLUSION Microcirculatory improvement was seen over the whole foot after tibial bypass. Therefore, fluorescence angiography is a promising tool to evaluate the angiosome concept in future larger studies. Clinicaltrials.gov: NCT03012750.
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Affiliation(s)
- Ulrich Rother
- Department of Vascular Surgery, University Hospital Erlangen, Friedrich Alexander University Erlangen-Nuernberg FAU, Erlangen, Germany.
| | - Werner Lang
- Department of Vascular Surgery, University Hospital Erlangen, Friedrich Alexander University Erlangen-Nuernberg FAU, Erlangen, Germany
| | - Raymund E Horch
- Department of Plastic and Hand Surgery, University Hospital Erlangen, Friedrich Alexander University Erlangen-Nuernberg FAU, Erlangen, Germany
| | - Ingo Ludolph
- Department of Plastic and Hand Surgery, University Hospital Erlangen, Friedrich Alexander University Erlangen-Nuernberg FAU, Erlangen, Germany
| | - Alexander Meyer
- Department of Vascular Surgery, University Hospital Erlangen, Friedrich Alexander University Erlangen-Nuernberg FAU, Erlangen, Germany
| | - Olaf Gefeller
- Department of Medical Informatics, Biometry and Epidemiology, Friedrich Alexander University Erlangen-Nuernberg FAU, Erlangen, Germany
| | - Susanne Regus
- Department of Vascular Surgery, University Hospital Erlangen, Friedrich Alexander University Erlangen-Nuernberg FAU, Erlangen, Germany
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Turner JS, Okonkwo A, Chase A, Clark CE. Early outcomes of fluorescence angiography in the setting of endorectal mucosa advancement flaps. Tech Coloproctol 2017; 22:25-30. [PMID: 29256139 DOI: 10.1007/s10151-017-1732-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Accepted: 09/10/2017] [Indexed: 10/18/2022]
Abstract
BACKGROUND Fistula-in-ano has a reported incidence of 31-34%. Besides fistulotomy, options for fistula repair are seton placement, endorectal advancement flap (ERAF), fibrin sealant, anal fistula plug and ligation of the intersphincteric fistula tract. Despite having a reported success rate as high as 75-98%, ERAF is not without complications, including flap breakdown, recurrence and fecal incontinence. Traditionally, maintaining a broad base to preserve blood supply has been advocated to reduce flap failure. And the aim of the present study was to evaluate outcomes of adult patients who underwent ERAF for complex fistula-in-ano with the use of intraoperative fluorescence angiography (FA) at our institution between July 2014 and July 2016. METHODS We retrospectively reviewed consecutive cases of complex fistula-in-ano repair with ERAF and FA from a prospectively maintained dataset of adult patients with complex fistula-in-ano. Demographics, intraoperative data and 60-day outcomes were recorded and reviewed. RESULTS Six patients [five males and one female with a mean age of 40 years (range 25-46 years)], with a total of seven fistulas, were identified. Six (85.7%) of these patients had undergone prior surgery for fistula-in-ano. No recurrences or complications of any type were noted at 2-week and 8-week follow-up. The majority of patients (71.4%) required flap revision based on intraoperative FA prior to flap fixation. CONCLUSIONS FA is safe and offers real-time assessment of flap perfusion prior to and after fixation in anal fistula repair. The rate of flap ischemia may be underestimated, and therefore, to improve outcomes in ERAF, intraoperative FA should be included in the surgical armamentarium.
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Affiliation(s)
- J S Turner
- Division of Colon and Rectal Surgery, Department of Surgery, Morehouse School of Medicine, 720 Westview Dr., Atlanta, GA, 30310, USA.
| | - A Okonkwo
- Department of Surgery, Morehouse School of Medicine, Atlanta, GA, USA
| | - A Chase
- Division of Colon and Rectal Surgery, Department of Surgery, Morehouse School of Medicine, 720 Westview Dr., Atlanta, GA, 30310, USA
| | - C E Clark
- Division of Colon and Rectal Surgery, Department of Surgery, Morehouse School of Medicine, 720 Westview Dr., Atlanta, GA, 30310, USA
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Brockmann C, Dege S, Crespo-Garcia S, Kociok N, Brockmann T, Strauß O, Joussen AM. Spatial distribution of CD115 + and CD11b + cells and their temporal activation during oxygen-induced retinopathy in mice. Graefes Arch Clin Exp Ophthalmol 2017; 256:313-323. [PMID: 29185100 DOI: 10.1007/s00417-017-3845-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 10/11/2017] [Accepted: 11/04/2017] [Indexed: 12/25/2022] Open
Abstract
PURPOSE The model of oxygen-induced retinopathy (OIR) is widely used to analyze pathomechanisms in retinal neovascularization. Previous studies have shown that macrophages (MP) play a key role in vessel formation in OIR, the influence of microglia (MG) having been discussed. The aim of our study was to analyze the spatial and temporal distribution and activation of MP/MG expressing CD115 and CD11b during the process of neovascularization in OIR. METHODS We used MacGreen mice expressing the green fluorescence protein (GFP) under the promoter for CD115. CD115+ cells were investigated in vivo by scanning laser ophthalmoscopy at postnatal days (P) 17 and 21 in MacGreen mice with OIR (75% oxygen from P7 to P12), and were compared to MacGreen room-air controls. In addition MP/MG were examined ex vivo using immunohistochemistry for CD11b+ detection on retinal flatmounts at P14, P17, and P21 of wild type mice with OIR. RESULTS In-vivo imaging revealed the highest density of activated MP/MG in tuft areas at P17 of MacGreen mice with OIR. Tufts and regions with a high density of CD115+ cells were detected close to veins, rather to arteries. In peripheral, fully vascularized areas, the distribution of CD115+ cells in MacGreen mice with OIR was similar to MacGreen room-air controls. Correspondingly, immunohistochemical analyses of retinal flatmounts from wild type mice with OIR induction revealed that the number of CD11b+ cells significantly varies between vascular, avascular, and tuft areas as well as between the retinal layers. Activated CD11b+ cells were almost exclusively found in avascular areas and tufts of wild type mice with OIR induction; here, the proportion of activated cells related to the total number of CD11b+ cells remained stable over the course of time. CONCLUSIONS Using two different approaches to monitor MP/MG cells, our findings demonstrated that MP/MG concentrate within pathologically vascularized areas during OIR. We were able to clarify that reactive changes of CD11b+ cell distribution to OIR primarily occur in the deep retinal layers. Furthermore, we found the highest proportion of activated CD11b+ cells in regions with pathologic neovascularization processes. Our findings support previous reports about activated MP/MG guiding revascularization in avascular areas and playing a key role in the formation and regression of neovascular tufts.
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Affiliation(s)
- Claudia Brockmann
- Department of Ophthalmology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität Berlin, and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany.
- Berlin Institute of Health (BIH), Berlin, Germany.
| | - Sabrina Dege
- Department of Ophthalmology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität Berlin, and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Sergio Crespo-Garcia
- Department of Ophthalmology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität Berlin, and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Norbert Kociok
- Department of Ophthalmology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität Berlin, and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Tobias Brockmann
- Department of Ophthalmology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität Berlin, and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany
- Berlin Institute of Health (BIH), Berlin, Germany
| | - Olaf Strauß
- Department of Ophthalmology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität Berlin, and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Antonia M Joussen
- Department of Ophthalmology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität Berlin, and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany
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Karampinis I, Ronellenfitsch U, Mertens C, Gerken A, Hetjens S, Post S, Kienle P, Nowak K. Indocyanine green tissue angiography affects anastomotic leakage after esophagectomy. A retrospective, case-control study. Int J Surg 2017; 48:210-214. [PMID: 29146267 DOI: 10.1016/j.ijsu.2017.11.001] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 10/15/2017] [Accepted: 11/02/2017] [Indexed: 02/08/2023]
Abstract
PURPOSE Optimal perfusion of the gastric conduit during esophagectomy is elementary for the anastomotic healing since poor perfusion has been associated with increased morbidity due to anastomotic leaks. Until recently surgical experience was the main tool to assess the perfusion of the anastomosis. We hypothesized that anastomoses located in the zone of optimal ICG perfusion of the gastric conduit ("optizone") have a reduced anastomotic leakage rate after esophagectomy. METHODS Indocyanine green (ICG) fluorescence tissue angiography was used to evaluate the anastomotic perfusion in 35 patients undergoing esophagectomy with gastric conduit reconstruction. The transition point of the "optizone" to the malperfused area of the conduit was defined macroscopically and with the use of ICG angiography during the operation. The anastomosis was performed in the optizone whenever possible. The results of the ICG patients were retrospectively reviewed and compared with 55 patients previously operated without ICG angiography. RESULTS The visual assessment of the conduit perfusion concurred with the ICG angiography in 27 cases. In 8 cases (22.8%) the ICG angiography deviated from the visual aspect. One case of anastomotic leakage was observed in the group of patients in which the anastomosis could be performed in the optizone (1/33; 3%) compared with 10 cases in the control group (18%; p = 0.04). In two cases we had to perform the anastomosis in an area of compromised ICG perfusion. Both patients developed an anastomotic leakage. CONCLUSIONS ICG tissue angiography represents a feasible and reliable technical support in the evaluation of the anastomotic perfusion after esophagectomy. In this retrospective analysis we observed a significant decrease in anastomotic leakage rate when the anastomosis could be placed in the zone of good perfusion defined by ICG fluorescence. A prospective trial is needed in order to provide higher level evidence for the use of ICG fluorescence in reducing leakage rates after esophagectomy.
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Affiliation(s)
- Ioannis Karampinis
- Department of Surgery, Mannheim University Medical Centre, University of Heidelberg, Theodor Kutzer Ufer 1-3, 68167, Mannheim, Germany.
| | - Ulrich Ronellenfitsch
- Department of Vascular and Endovascular Surgery, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany.
| | - Christina Mertens
- Department of Surgery, Mannheim University Medical Centre, University of Heidelberg, Theodor Kutzer Ufer 1-3, 68167, Mannheim, Germany.
| | - Andreas Gerken
- Department of Surgery, Mannheim University Medical Centre, University of Heidelberg, Theodor Kutzer Ufer 1-3, 68167, Mannheim, Germany.
| | - Svetlana Hetjens
- Institute of Medical Statistic and Biomathematics, Mannheim University Medical Centre, University of Heidelberg, Ludolf-Krehl Strasse 13-17, 68167, Mannheim, Germany.
| | - Stefan Post
- Department of Surgery, Mannheim University Medical Centre, University of Heidelberg, Theodor Kutzer Ufer 1-3, 68167, Mannheim, Germany.
| | - Peter Kienle
- Department of Surgery, Mannheim University Medical Centre, University of Heidelberg, Theodor Kutzer Ufer 1-3, 68167, Mannheim, Germany.
| | - Kai Nowak
- Department of Surgery, Mannheim University Medical Centre, University of Heidelberg, Theodor Kutzer Ufer 1-3, 68167, Mannheim, Germany.
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