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Sadatomo A, Horie H, Koinuma K, Sata N, Kojima Y, Nakamura T, Watanabe J, Kobatake T, Akagi T, Nakajima K, Inomata M, Yamamoto S, Watanabe M, Sakai Y, Naitoh T. Risk factors for anastomotic leakage after low anterior resection for obese patients with rectal cancer. Surg Today 2024:10.1007/s00595-024-02808-y. [PMID: 38413412 DOI: 10.1007/s00595-024-02808-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 01/07/2024] [Indexed: 02/29/2024]
Abstract
PURPOSE We aimed to analyze the risk factors for anastomotic leakage (AL) after low anterior resection (LAR) in obese patients (body mass index [BMI] ≥ 25 kg/m2) with rectal cancer. METHODS Data were collected from four hundred two obese patients who underwent LAR for rectal cancer in 51 institutions. RESULTS Forty-six (11.4%) patients had clinical AL. The median BMI (27 kg/m2) did not differ between the AL and non-AL groups. In the AL group, comorbid respiratory disease was more common (p = 0.025), and the median tumor size was larger (p = 0.002). The incidence of AL was 11.5% in the open surgery subgroup and 11.4% in the laparoscopic surgery subgroup. Among the patients who underwent open surgery, the AL group showed a male predominance (p = 0.04) in the univariate analysis, but it was not statistically significant in the multivariate analysis. Among the patients who underwent laparoscopic surgery, the AL group included a higher proportion of patients with comorbid respiratory disease (p = 0.003) and larger tumors (p = 0.007). CONCLUSION Comorbid respiratory disease and tumor size were risk factors for AL in obese patients with rectal cancer. Careful perioperative respiratory management and appropriate selection of surgical procedures are required for obese rectal cancer patients with respiratory diseases.
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Affiliation(s)
- Ai Sadatomo
- Department of Surgery, Division of Gastroenterological, General and Transplant Surgery, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan.
| | - Hisanaga Horie
- Department of Surgery, Division of Gastroenterological, General and Transplant Surgery, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Koji Koinuma
- Department of Surgery, Division of Gastroenterological, General and Transplant Surgery, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Naohiro Sata
- Department of Surgery, Division of Gastroenterological, General and Transplant Surgery, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Yutaka Kojima
- Department of Coloproctological Surgery, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Takatoshi Nakamura
- Department of Surgical Oncology, Dokkyo Medical University, Tochigi, Japan
| | - Jun Watanabe
- Department of Surgery, Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Japan
| | - Takaya Kobatake
- Gastroenterological Surgery, National Hospital Organization Shikoku Cancer Center, Matsuyama, Japan
| | - Tomonori Akagi
- Gastroenterological and Pediatric Surgery, Oita University of Faculty of Medicine, Oita, Japan
| | - Kentaro Nakajima
- Department of Surgery, Kanto Medical Center, NTT East Corporation, Tokyo, Japan
| | - Masafumi Inomata
- Gastroenterological and Pediatric Surgery, Oita University of Faculty of Medicine, Oita, Japan
| | - Seiichiro Yamamoto
- Department of Digestive Surgery, Tokai University Hospital, Isehara, Japan
| | - Masahiko Watanabe
- Department of Surgery, Kitasato University Kitasato Institute Hospital, Tokyo, Japan
| | - Yoshiharu Sakai
- Department of Surgery, Osaka Red Cross Hospital, Osaka, Japan
| | - Takeshi Naitoh
- Department of Lower Gastrointestinal Surgery, Kitasato University School of Medicine, Sagamihara, Japan
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Huynh M, Tjandra R, Helwa N, Okasha M, El-Falou A, Helwa Y. Continuous pH monitoring using a sensor for the early detection of anastomotic leaks. FRONTIERS IN MEDICAL TECHNOLOGY 2023; 5:1128460. [PMID: 37275781 PMCID: PMC10235488 DOI: 10.3389/fmedt.2023.1128460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 05/04/2023] [Indexed: 06/07/2023] Open
Abstract
Anastomotic leaks (AL) and staple line leaks are a serious post-operative complication that can develop following bariatric surgery. The delay in the onset of symptoms following a leak usually results in reactive diagnostics and treatment, leading to increased patient morbidity and mortality, and a clinical and economic burden on both the patient and the hospital. Despite support in literature for pH as a biomarker for early detection of AL, the current methods of pH detection require significant clinician involvement and resources. Presented here is a polyaniline (PANI)-based pH sensor that can be connected inline to surgical drains to continuously monitor peritoneal secretion in real time for homeostatic changes in pH. During this study, the baseline peritoneal fluid pH was measured in two pigs using the PANI sensor and verified using a benchtop pH probe. The PANI sensor was then utilized to continuously monitor the changes in the pH of peritoneal effluent, as a gastric leak was simulated. The inline sensors were able to detect the resulting local changes in drainage pH within 10 min of leak induction. The successful implementation of this sensor in clinical practice can both enable high efficiency continuous monitoring of patient status and drastically decrease the time required to detect AL, thus potentially decreasing the clinical and economic burden incurred by gastric leaks.
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Affiliation(s)
- Michelle Huynh
- FluidAI Medical, Kitchener, ON, Canada
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, ON, Canada
| | | | | | - Mohamed Okasha
- FluidAI Medical, Kitchener, ON, Canada
- Department of Chemistry, University of Waterloo, Waterloo, ON, Canada
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Predictive Factors for Anastomotic Leakage Following Colorectal Cancer Surgery: Where Are We and Where Are We Going? Curr Oncol 2023; 30:3111-3137. [PMID: 36975449 PMCID: PMC10047700 DOI: 10.3390/curroncol30030236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/03/2023] [Accepted: 03/06/2023] [Indexed: 03/09/2023] Open
Abstract
Anastomotic leakage (AL) remains one of the most severe complications following colorectal cancer (CRC) surgery. Indeed, leaks that may occur after any type of intestinal anastomosis are commonly associated with a higher reoperation rate and an increased risk of postoperative morbidity and mortality. At first, our review aims to identify specific preoperative, intraoperative and perioperative factors that eventually lead to the development of anastomotic dehiscence based on the current literature. We will also investigate the role of several biomarkers in predicting the presence of ALs following colorectal surgery. Despite significant improvements in perioperative care, advances in surgical techniques, and a high index of suspicion of this complication, the incidence of AL remained stable during the last decades. Thus, gaining a better knowledge of the risk factors that influence the AL rates may help identify high-risk surgical patients requiring more intensive perioperative surveillance. Furthermore, prompt diagnosis of this severe complication may help improve patient survival. To date, several studies have identified predictive biomarkers of ALs, which are most commonly associated with the inflammatory response to colorectal surgery. Interestingly, early diagnosis and evaluation of the severity of this complication may offer a significant opportunity to guide clinical judgement and decision-making.
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Anastomotic perfusion assessment with indocyanine green in robot-assisted low-anterior resection, a multicenter study of interobserver variation. Surg Endosc 2023; 37:3602-3609. [PMID: 36624218 PMCID: PMC10156761 DOI: 10.1007/s00464-022-09819-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 12/05/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND Securing sufficient blood perfusion to the anastomotic area after low-anterior resection is a crucial factor in preventing anastomotic leakage (AL). Intra-operative indocyanine green fluorescent imaging (ICG-FI) has been suggested as a tool to assess perfusion. However, knowledge of inter-observer variation among surgeons in the interpretation of ICG-FI is sparse. Our primary objective was to evaluate inter-observer variation among surgeons in the interpretation of bowel blood-perfusion assessed visually by ICG-FI. Our secondary objective was to compare the results both from the visual assessment of ICG and from computer-based quantitative analyses of ICG-FI between patients with and without the development of AL. METHOD A multicenter study, including patients undergoing robot-assisted low anterior resection with stapled anastomosis. ICG-FI was evaluated visually by the surgeon intra-operatively. Postoperatively, recorded videos were anonymized and exchanged between centers for inter-observer evaluation. Time to visibility (TTV), time to maximum visibility (TMV), and time to wash-out (TWO) were visually assessed. In addition, the ICG-FI video-recordings were analyzed using validated pixel analysis software to quantify blood perfusion. RESULTS Fifty-five patients were included, and five developed clinical AL. Bland-Altman plots (BA plots) demonstrated wide inter-observer variation for visually assessed fluorescence on all parameters (TTV, TMV, and TWO). Comparing leak-group with no-leak group, we found no significant differences for TTV: Hazard Ratio; HR = 0.82 (CI 0.32; 2.08), TMV: HR = 0.62 (CI 0.24; 1.59), or TWO: HR = 1.11 (CI 0.40; 3.11). In the quantitative pixel analysis, a lower slope of the fluorescence time-curve was found in patients with a subsequent leak: median 0.08 (0.07;0.10) compared with non-leak patients: median 0.13 (0.10;0.17) (p = 0.04). CONCLUSION The surgeon's visual assessment of the ICG-FI demonstrated wide inter-observer variation, there were no differences between patients with and without AL. However, quantitative pixel analysis showed a significant difference between groups. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT04766060.
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5
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C-reactive protein and its ratio are useful indicators to exclude anastomotic leakage requiring intervention after laparoscopic rectal surgery. Updates Surg 2022; 74:1637-1643. [DOI: 10.1007/s13304-022-01358-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 04/22/2022] [Indexed: 11/24/2022]
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Clark DA, Steffens D, Solomon M. An umbrella systematic review of drain fluid analysis in colorectal surgery for the detection of anastomotic leak: Not yet ready to translate research studies into clinical practice. Colorectal Dis 2021; 23:2795-2805. [PMID: 34314559 DOI: 10.1111/codi.15844] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 05/13/2021] [Accepted: 06/28/2021] [Indexed: 02/08/2023]
Abstract
AIM Anastomotic leak (AL) is the most important complication of intestinal surgery with an anastomosis. Whilst a number of studies have defined risk factors for AL, frustratingly, low-risk patients still develop AL. Studies have looked at drain fluid analysis for detection of AL, but these findings have failed to translate into routine clinical practice. This umbrella systematic review aims to provide an overview of the promising candidate biomarkers (BMs) that show potential to translate into clinical practice. METHODS A systematic literature search was conducted in MEDLINE, EMBASE, and the Cochrane, KSR Evidence and the Epistemonikos databases on the 14 April 2021. Only systematic reviews of cohort or controlled studies measuring drain fluid biomarkers in humans were included. The methodological quality of the reviews was assessed using the AMSTAR 2 instrument. Clinical trial registries were searched for trials actively investigating drain fluid BMs. Candidate BMs were classified, and threshold values investigated. RESULTS Nine systematic reviews, published between 2007 and 2020, met the inclusion criteria, and contained a total of 36 cohort studies. A total of 38 different BMs were studied. The most promising category of drain fluid BM was the extravasated intra-luminal substances (EILS) and five registered trials of these BMs were found. Two of nine reviews were of moderate quality. CONCLUSIONS The majority of BMs show inconsistent threshold values and are in the experimental stage. A number are not readily available for adoption into routine clinical practice. Most do not state a cut-off value to be considered as diagnostic.
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Affiliation(s)
- David A Clark
- Faculty of Medicine and Health, Central Clinical School, The University of Sydney, Sydney, NSW, Australia.,Surgical Outcomes Research Centre (SOuRCe), Royal Prince Alfred Hospital, Sydney, NSW, Australia.,Royal Brisbane and Women's Hospital, Brisbane, Qld, Australia.,University of Qld, St Lucia, Qld, Australia.,St Vincent's Private Hospital Northside, Brisbane, Qld, Australia
| | - Daniel Steffens
- Faculty of Medicine and Health, Central Clinical School, The University of Sydney, Sydney, NSW, Australia.,Surgical Outcomes Research Centre (SOuRCe), Royal Prince Alfred Hospital, Sydney, NSW, Australia
| | - Michael Solomon
- Faculty of Medicine and Health, Central Clinical School, The University of Sydney, Sydney, NSW, Australia.,Surgical Outcomes Research Centre (SOuRCe), Royal Prince Alfred Hospital, Sydney, NSW, Australia
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Urbán D, Cserni T, Boros M, Juhász Á, Érces D, Varga G. Bladder augmentation from an insider's perspective: a review of the literature on microcirculatory studies. Int Urol Nephrol 2021; 53:2221-2230. [PMID: 34435307 DOI: 10.1007/s11255-021-02971-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 08/03/2021] [Indexed: 02/07/2023]
Abstract
Augmentation cystoplasty is an exemplary multiorgan intervention in urology which is particularly associated with microvascular damage. Our aim was to review the available intravital imaging techniques and data obtained from clinical and experimental microcirculatory studies involving the most important donor organs applied in bladder augmentation. Although numerous direct or indirect methods are available to assess the condition of microvessels the implementation of microcirculatory diagnostic methods in humans is still challenging and the assessment of organ microcirculation in the operating theatre has limitations. Nevertheless, preclinical studies generally report good internal validity and although prospective human protocols with reduced variability are needed, a possible positive impact of microcirculatory diagnostics on the clinical outcomes of urologic surgery can be anticipated.
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Affiliation(s)
- Dániel Urbán
- Institute of Surgical Research, University of Szeged, Pulz u. 1., Szeged, 6724, Hungary.,Department of General and Thoracic Surgery, Hetényi Géza County Hospital, Tószegi u. 21., Szolnok, 5000, Hungary
| | - Tamás Cserni
- Institute of Surgical Research, University of Szeged, Pulz u. 1., Szeged, 6724, Hungary.,Department of Paediatric Urology, The Royal Manchester Children's Hospital, Oxford Road, Manchester, M13 9WL, UK
| | - Mihály Boros
- Institute of Surgical Research, University of Szeged, Pulz u. 1., Szeged, 6724, Hungary
| | - Árpád Juhász
- Department of General and Thoracic Surgery, Hetényi Géza County Hospital, Tószegi u. 21., Szolnok, 5000, Hungary
| | - Dániel Érces
- Institute of Surgical Research, University of Szeged, Pulz u. 1., Szeged, 6724, Hungary
| | - Gabriella Varga
- Institute of Surgical Research, University of Szeged, Pulz u. 1., Szeged, 6724, Hungary.
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Marland JRK, Gray ME, Argyle DJ, Underwood I, Murray AF, Potter MA. Post-Operative Monitoring of Intestinal Tissue Oxygenation Using an Implantable Microfabricated Oxygen Sensor. MICROMACHINES 2021; 12:810. [PMID: 34357220 PMCID: PMC8303214 DOI: 10.3390/mi12070810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/06/2021] [Accepted: 07/08/2021] [Indexed: 12/02/2022]
Abstract
Anastomotic leakage (AL) is a common and dangerous post-operative complication following intestinal resection, causing substantial morbidity and mortality. Ischaemia in the tissue surrounding the anastomosis is a major risk-factor for AL development. Continuous tissue oxygenation monitoring during the post-operative recovery period would provide early and accurate early identification of AL risk. We describe the construction and testing of a miniature implantable electrochemical oxygen sensor that addresses this need. It consisted of an array of platinum microelectrodes, microfabricated on a silicon substrate, with a poly(2-hydroxyethyl methacrylate) hydrogel membrane to protect the sensor surface. The sensor was encapsulated in a biocompatible package with a wired connection to external instrumentation. It gave a sensitive and highly linear response to variations in oxygen partial pressure in vitro, although over time its sensitivity was partially decreased by protein biofouling. Using a pre-clinical in vivo pig model, acute intestinal ischaemia was robustly and accurately detected by the sensor. Graded changes in tissue oxygenation were also measurable, with relative differences detected more accurately than absolute differences. Finally, we demonstrated its suitability for continuous monitoring of tissue oxygenation at a colorectal anastomosis over a period of at least 45 h. This study provides evidence to support the development and use of implantable electrochemical oxygen sensors for post-operative monitoring of anastomosis oxygenation.
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Affiliation(s)
- Jamie R. K. Marland
- School of Engineering, Institute for Integrated Micro and Nano Systems, University of Edinburgh, Scottish Microelectronics Centre, King’s Buildings, Edinburgh EH9 3FF, UK;
| | - Mark E. Gray
- The Royal (Dick) School of Veterinary Studies and Roslin Institute, University of Edinburgh, Easter Bush, Roslin, Midlothian EH25 9RG, UK; (M.E.G.); (D.J.A.)
| | - David J. Argyle
- The Royal (Dick) School of Veterinary Studies and Roslin Institute, University of Edinburgh, Easter Bush, Roslin, Midlothian EH25 9RG, UK; (M.E.G.); (D.J.A.)
| | - Ian Underwood
- School of Engineering, Institute for Integrated Micro and Nano Systems, University of Edinburgh, Scottish Microelectronics Centre, King’s Buildings, Edinburgh EH9 3FF, UK;
| | - Alan F. Murray
- School of Engineering, Institute for Bioengineering, University of Edinburgh, Faraday Building, Edinburgh EH9 3DW, UK;
| | - Mark A. Potter
- Department of Surgery, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK;
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Gray M, Marland JRK, Murray AF, Argyle DJ, Potter MA. Predictive and Diagnostic Biomarkers of Anastomotic Leakage: A Precision Medicine Approach for Colorectal Cancer Patients. J Pers Med 2021; 11:471. [PMID: 34070593 PMCID: PMC8229046 DOI: 10.3390/jpm11060471] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/19/2021] [Accepted: 05/20/2021] [Indexed: 02/06/2023] Open
Abstract
Development of an anastomotic leak (AL) following intestinal surgery for the treatment of colorectal cancers is a life-threatening complication. Failure of the anastomosis to heal correctly can lead to contamination of the abdomen with intestinal contents and the development of peritonitis. The additional care that these patients require is associated with longer hospitalisation stays and increased economic costs. Patients also have higher morbidity and mortality rates and poorer oncological prognosis. Unfortunately, current practices for AL diagnosis are non-specific, which may delay diagnosis and have a negative impact on patient outcome. To overcome these issues, research is continuing to identify AL diagnostic or predictive biomarkers. In this review, we highlight promising candidate biomarkers including ischaemic metabolites, inflammatory markers and bacteria. Although research has focused on the use of blood or peritoneal fluid samples, we describe the use of implantable medical devices that have been designed to measure biomarkers in peri-anastomotic tissue. Biomarkers that can be used in conjunction with clinical status, routine haematological and biochemical analysis and imaging have the potential to help to deliver a precision medicine package that could significantly enhance a patient's post-operative care and improve outcomes. Although no AL biomarker has yet been validated in large-scale clinical trials, there is confidence that personalised medicine, through biomarker analysis, could be realised for colorectal cancer intestinal resection and anastomosis patients in the years to come.
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Affiliation(s)
- Mark Gray
- The Royal (Dick) School of Veterinary Studies and Roslin Institute, University of Edinburgh, Easter Bush, Roslin, Midlothian, Edinburgh EH25 9RG, UK;
| | - Jamie R. K. Marland
- School of Engineering, Institute for Integrated Micro and Nano Systems, University of Edinburgh, Scottish Microelectronics Centre, King’s Buildings, Edinburgh EH9 3FF, UK;
| | - Alan F. Murray
- School of Engineering, Institute for Bioengineering, University of Edinburgh, Faraday Building, The King’s Buildings, Edinburgh EH9 3DW, UK;
| | - David J. Argyle
- The Royal (Dick) School of Veterinary Studies and Roslin Institute, University of Edinburgh, Easter Bush, Roslin, Midlothian, Edinburgh EH25 9RG, UK;
| | - Mark A. Potter
- Department of Surgery, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK;
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Predictive Biological Markers for Anastomotic Leakage after Curative Surgery for Colorectal Cancer. ACTA MEDICA TRANSILVANICA 2021. [DOI: 10.2478/amtsb-2021-0014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Abstract
anastomotic leakage is one of the most important postoperative complications for colorectal cancer patients undergoing curative surgery. Early recognition of patients in risk would be essential for preventing the high mortality rates associated with these complications. C reactive protein (PCR), tumour necrosis factor (TNF-alpha), cortisol levels and granulocyte/lymphocyte ratio (G/L) were compared in this period in patients who developed leakage vs patients without this complication. Material and methods: 52 colorectal cancer patients who underwent elective surgery in a private clinical hospital were evaluated preoperatively and postoperatively for the patients. Results: 14 patients (26,9%) developed clinically significant anastomotic leakage. The best cut-off value for preoperative G/L ratio of 5,8 had sensitivity of 71,43% and specificity of 73,68%. Conclusions: Preoperative G/L ratio can be used as a largely available tool for identifying the colorectal cancer patients at high risk for anastomotic leakage.
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11
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Tavy ALM, de Bruin AFJ, Smits AB, Boerma EC, Ince C, Noordzij PG, Boerma D, van Iterson M. Intestinal Mucosal and Serosal Microcirculation at the Planned Anastomosis during Abdominal Surgery. Eur Surg Res 2020; 60:248-256. [PMID: 31935725 DOI: 10.1159/000505325] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 12/10/2019] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Intestinal blood flow is often named as a key factor in the pathophysiology of anastomotic leakage. The distribution between mucosal and serosal microperfusion during surgery remains to be elucidated. OBJECTIVE The aim of this study was to assess if the mucosal microcirculation of the intestine is more vulnerable to a surgical hit than the serosal microcirculation during surgery. METHODS In an observational cohort study (n = 9 patients), the microcirculation of the bowel serosa and mucosa was visualized with incident dark-field imaging during surgery. At the planned anastomosis, the following microcirculatory parameters were determined: microvascular flow index (MFI), percentage of perfused vessels (PPV), perfused vessel density (PVD), and total vessel density (TVD). Data are presented as median (interquartile range [IQR]). RESULTS Perfusion parameters and vessel density were significantly higher for the mucosa than the serosal microcirculation at the planned site for anastomosis or stoma. Mucosal MFI was 3.00 (IQR 3.00-3.00) compared to a serosal MFI of 2.75 (IQR 2.21-2.94), p = 0.03. The PPV was 99% (IQR 98-100) versus 92% (IQR 66-94), p = 0.01. The TVD was 16.77 mm/mm2 (IQR 13.04-18.01) versus 10.42 mm/mm2 (IQR 9.36-11.81), p = 0.01, and the PVD was 15.44 mm/mm2 (IQR 13.04-17.78) versus 9.02 mm/mm2 (IQR 6.43-9.43), p = 0.01. CONCLUSIONS The mucosal microcirculation was preserved, while lower perfusion of the serosa was found at the planned anastomosis or stoma during surgery. Further research is needed to link our observations to the clinically relevant endpoint of anastomotic leakage.
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Affiliation(s)
- Arthur L M Tavy
- Department of Anesthesiology, Intensive Care and Pain Medicine, St. Antonius Hospital, Nieuwegein, The Netherlands,
| | - Anton F J de Bruin
- Department of Anesthesiology, Intensive Care and Pain Medicine, St. Antonius Hospital, Nieuwegein, The Netherlands
| | - Anke B Smits
- Department of Surgery, St. Antonius Hospital, Nieuwegein, The Netherlands
| | - E Christiaan Boerma
- Department of Intensive Care, Medical Center Leeuwarden, Leeuwarden, The Netherlands
| | - Can Ince
- Department of Intensive Care Medicine, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Peter G Noordzij
- Department of Anesthesiology, Intensive Care and Pain Medicine, St. Antonius Hospital, Nieuwegein, The Netherlands
| | - Djamila Boerma
- Department of Surgery, St. Antonius Hospital, Nieuwegein, The Netherlands
| | - Mat van Iterson
- Department of Anesthesiology, Intensive Care and Pain Medicine, St. Antonius Hospital, Nieuwegein, The Netherlands
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12
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Dabravolski SA, Kavalionak YK. Effect of corn lectins on the intestinal transport of trace elements. J Verbrauch Lebensm 2019. [DOI: 10.1007/s00003-019-01261-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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13
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Molinari E, Giuliani T, Andrianello S, Talamini A, Tollini F, Tedesco P, Pirani P, Panzeri F, Sandrini R, Remo A, Laterza E. Drain fluid's pH predicts anastomotic leak in colorectal surgery: results of a prospective analysis of 173 patients. MINERVA CHIR 2019; 75:30-36. [PMID: 31580043 DOI: 10.23736/s0026-4733.19.08018-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND The early risk assessment of anastomotic leak (AL) after colorectal surgery is crucial. Several markers have been proposed, including peritoneal fluid's pH. Aim of the present study is to evaluate the role of drain fluid pH as predictor of AL. METHODS All patients undergoing colorectal surgery from January 2015 to December 2017 were considered eligible. Hartmann procedures, procedures including temporary ileostomy and emergency surgery were excluded. Drain fluid was submitted for pH and chemical-physical assessment on postoperative day 1 (POD1) and postoperative day 3 (POD3). RESULTS Out of 173 patients, those who developed AL showed a lower drain fluid's pH on POD1 and on POD3 compared to patients who did not (P<0.05). The plotted ROC curves identified 7.53 as pH cut-off on POD1 (AUC 0.80) and 7.21 on POD3 (AUC 0.86). With both the cut-offs, pH was an independent predictor of AL at multivariable analysis (P<0.001). pH<7.53 on POD1 and pH<7.21 on POD3 showed 93.75% sensitivity and 97% specificity respectively. CONCLUSIONS Drain fluid's pH on POD1 is useful to select patients who will not develop AL while on POD3 it might identify those requiring a more careful management.
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Affiliation(s)
- Enrico Molinari
- Department of General Surgery, ULSS9 Scaligera, Mater Salutis Hospital, Legnago, Verona, Italy
| | - Tommaso Giuliani
- Department of General and Pancreatic Surgery, University of Verona Hospital Trust, Verona, Italy -
| | - Stefano Andrianello
- Department of General and Pancreatic Surgery, University of Verona Hospital Trust, Verona, Italy
| | - Alberto Talamini
- Department of General Surgery, ULSS9 Scaligera, Mater Salutis Hospital, Legnago, Verona, Italy
| | - Filippo Tollini
- Department of General Surgery, ULSS9 Scaligera, Mater Salutis Hospital, Legnago, Verona, Italy
| | - Pietro Tedesco
- Department of General Surgery, ULSS9 Scaligera, Mater Salutis Hospital, Legnago, Verona, Italy
| | - Paola Pirani
- Department of General Surgery, ULSS9 Scaligera, Mater Salutis Hospital, Legnago, Verona, Italy
| | - Francesca Panzeri
- Department of General Surgery, ULSS9 Scaligera, Mater Salutis Hospital, Legnago, Verona, Italy
| | - Roberto Sandrini
- Department of General Surgery, ULSS9 Scaligera, Mater Salutis Hospital, Legnago, Verona, Italy
| | - Andrea Remo
- Department of Pathology, ULLS9 Scaligera, Mater Salutis Hospital, Legnago, Verona, Italy
| | - Ernesto Laterza
- Department of General Surgery, ULSS9 Scaligera, Mater Salutis Hospital, Legnago, Verona, Italy
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14
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Qin Q, Zhu Y, Wu P, Fan X, Huang Y, Huang B, Wang J, Wang L. Radiation-induced injury on surgical margins: a clue to anastomotic leakage after rectal-cancer resection with neoadjuvant chemoradiotherapy? Gastroenterol Rep (Oxf) 2018; 7:98-106. [PMID: 30976422 PMCID: PMC6454846 DOI: 10.1093/gastro/goy042] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 07/01/2018] [Accepted: 07/15/2018] [Indexed: 01/13/2023] Open
Abstract
Background Few studies on anastomotic condition after rectal-cancer resection and its effect on anastomotic leakage (AL) are available up to now. This study aimed to investigate potential radiation-induced injury left on surgical margins of anterior resection after neoadjuvant chemoradiotherapy (nCRT) and its association with AL. Methods We retrospectively identified 161 consecutive patients who underwent anterior resection with nCRT, neoadjuvant chemotherapy without radiation (nCT) or no neoadjuvant therapy between 2014 and 2015. Tissue samples of resection margins were assessed using a specific histopathological score and microvessel density in submucosa. Propensity score matching was used to balance the baseline characteristics. Association between AL and histopathological features was analysed. Results AL occurred in 13 of 54 patients undergoing nCRT, 5 of 48 patients undergoing nCT and 7 of 59 patients without neoadjuvant therapy. Comparisons after matching showed median (range) histopathological scores as follows: 3 (0–8) vs 0 (0–3) vs 0 (0–2) for the proximal margin (P < 0.001); 4 (2–9) vs 0 (0–4) vs 0 (0–3) for the distal margin (P < 0.001). Correspondingly, mean (SD) microvessel densities were as follows: 21.7 (7.9) vs 27.2 (8.6) vs 27.3 (9.4) for the proximal margin (P = 0.003); 18.1 (9.3) vs 25.2 (12.9) vs 24.9 (7.4) for the distal margin (P < 0.001). Among patients undergoing nCRT, AL was associated with increased histopathological score (P = 0.003) and decreased microvessel density (P = 0.004) on the proximal margin. Conclusions Surgical margins of rectal-cancer resection are exposed to certain radiation-induced injury after nCRT. AL is associated with aggravated radiation damage on the proximal margin.
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Affiliation(s)
- Qiyuan Qin
- Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, P.R. China
| | - Yaxi Zhu
- Department of Pathology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, P.R. China
| | - Peihuang Wu
- Guangdong Institute of Gastroenterology, Guangzhou, Guangdong, P.R. China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangzhou, Guangdong, P.R. China
| | - Xinjuan Fan
- Department of Pathology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, P.R. China
| | - Yan Huang
- Department of Pathology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, P.R. China
| | - Binjie Huang
- Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, P.R. China
| | - Jianping Wang
- Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, P.R. China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangzhou, Guangdong, P.R. China
| | - Lei Wang
- Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, P.R. China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangzhou, Guangdong, P.R. China
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15
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de Bruin AFJ, Tavy ALM, van der Sloot K, Smits A, Ince C, Boerma EC, Noordzij PG, Boerma D, van Iterson M. Can sidestream dark field (SDF) imaging identify subtle microvascular changes of the bowel during colorectal surgery? Tech Coloproctol 2018; 22:793-800. [PMID: 30413998 DOI: 10.1007/s10151-018-1872-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 10/20/2018] [Indexed: 12/24/2022]
Abstract
BACKGROUND Recognition of a non-viable bowel during colorectal surgery is a challenging task for surgeons. Identifying the turning point in serosal microcirculatory deterioration leading up to a non-viable bowel is crucial. The aim of the present study was to determine whether sidestream darkfield (SDF) imaging can detect subtle changes in serosal microcirculation of the sigmoid after vascular transection during colorectal surgery. METHODS A prospective observational clinical study was performed at a single medical centre. All eligible participants underwent laparoscopic sigmoid resection and measurements were taken during the extra-abdominal phase. Microcirculation was measured at the transected bowel and 20 cm proximal to this point. Microcirculatory parameters such as Microvascular Flow Index (MFI), proportion of perfused vessels (PPV), perfused vessel density (PVD), total vessel density (TVD) and the Heterogeneity Index were determined. Data are presented as median (interquartile range) or mean ± standard deviation. RESULTS A total of 60 SDF images were acquired for 10 patients. Perfusion parameters and perfused vessel density were significantly lower at the transected bowel compared with the non-transected measurements [MFI 2.29 (1.96-2.63) vs 2.96 (2.73-3.00), p = 0.007; PPV 74% (55-83) vs 94% (86-97), p = 0.007; and PVD 7.61 ± 2.99 mm/mm2 versus 10.67 ± 1.48 mm/mm2, p = 0.009]. Total vessel density was similar between the measurement locations. CONCLUSIONS SDF imaging can identify changes of the bowel serosal microcirculation. Significantly lower serosal microcirculatory parameters of the vascular transected bowel was seen compared with the non-transected bowel. The ability of SDF imaging to detect subtle differences holds promise for future research on microvascular cut-off values leading to a non-viable bowel.
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Affiliation(s)
- A F J de Bruin
- Department of Anesthesiology, Intensive Care and Pain Medicine, St Antonius Hospital, Postbus 2500, 3430 EM, Nieuwegein, The Netherlands.
| | - A L M Tavy
- Department of Anesthesiology, Intensive Care and Pain Medicine, St Antonius Hospital, Postbus 2500, 3430 EM, Nieuwegein, The Netherlands
| | - K van der Sloot
- Department of Anesthesiologie and Pain Medicine, Haaglanden Medisch Centrum, The Hague, The Netherlands
| | - A Smits
- Department of Surgery, St Antonius Hospital, Nieuwegein, The Netherlands
| | - C Ince
- Department of Intensive Care, Erasmus MC, Rotterdam, The Netherlands
| | - E C Boerma
- Department of Intensive Care, Medical Center Leeuwarden, Leeuwarden, The Netherlands
| | - P G Noordzij
- Department of Anesthesiology, Intensive Care and Pain Medicine, St Antonius Hospital, Postbus 2500, 3430 EM, Nieuwegein, The Netherlands
| | - D Boerma
- Department of Surgery, St Antonius Hospital, Nieuwegein, The Netherlands
| | - M van Iterson
- Department of Anesthesiology, Intensive Care and Pain Medicine, St Antonius Hospital, Postbus 2500, 3430 EM, Nieuwegein, The Netherlands
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16
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Paasch C, Rink S, Steinbach M, Kneif S, Peetz D, Klötzler A, Gauger U, Mohnike K, Hünerbein M. Bilirubin, urobilinogen, pancreas elastase and bile acid in drain fluid. The GBUP-study: Analysis of biomarkers for a colorectal anastomotic leakage. Ann Med Surg (Lond) 2018; 35:44-50. [PMID: 30294427 PMCID: PMC6170325 DOI: 10.1016/j.amsu.2018.09.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Revised: 08/29/2018] [Accepted: 09/12/2018] [Indexed: 11/29/2022] Open
Abstract
Purpose A colorectal anastomotic leakage (CAL) is a major complication after colorectal surgery and leads to high rates of morbidity and prolonged hospital stay. The study aims to evaluate the benefit of using bilirubin, urobilinogen, pancreas elastase and bile acid in the drain fluid (DF) as a predictive marker for the CAL. Methods From June 2015 to October 2017 100 patients, who underwent left hemicolectomy (LH), sigma resection (SR), high anterior resection (HAR), low anterior resection (LAR) or reversal of Hartmann's Procedure (ROHP) were included in this monocentric non-randomized prospective clinical trial. During the first four postoperative days (POD) the concentration of bilirubin, urobilinogen, pancreas elastase and bile acid in the DF was measured. Results In total 100 patients were recruited. 17 were excluded due to intraoperative decisions to conduct a protective stoma. 6 patients had a CAL. The patients of the control group (n = 77) and the patients who suffered from a CAL (n = 6) had no increased concentration of urobilinogen and pancreas elastase in the DF. The concentration of bile acid in the DF of the patients who suffered from a CAL differed from those of the control group on the 4th POD (p = 0.055). The concentration of bilirubin in the DF of the patients who suffered from a CAL significantly differed from those of the control group on the 1st POD (p = 0.031) and on the 3rd POD (p = 0.041). Conclusion Bilirubin and bile acid in the DF may function as a predictive marker for a CAL. Bilirubin in the DF may function as a predictive marker for a CAL. Bile acid in the DF may function as a predictive marker for a CAL. Pancreas elastase in the DF did not seem to be a predictive marker for a CAL.
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Affiliation(s)
- Christoph Paasch
- Department of General, Visceral and Cancer Surgery, HELIOS Klinikum Berlin-Buch, Berlin, Germany
| | - Silke Rink
- Department of General, Visceral and Cancer Surgery, HELIOS Klinikum Berlin-Buch, Berlin, Germany
| | - Marcus Steinbach
- Department of General, Visceral and Cancer Surgery, HELIOS Klinikum Berlin-Buch, Berlin, Germany
| | - Sören Kneif
- Department of General, Visceral and Cancer Surgery, HELIOS Klinikum Berlin-Buch, Berlin, Germany
| | - Dirk Peetz
- Institut of Clinical Chemistry and Laboratory Medicine, HELIOS Klinikum Berlin-Buch, Berlin, Germany
| | - Andre Klötzler
- Department of General, Visceral and Cancer Surgery, HELIOS Klinikum Berlin-Buch, Berlin, Germany
| | | | - Klaus Mohnike
- Pediatric Endocrinology, Department of Pediatrics, Otto von Guericke University Magdeburg, Magdeburg, Germany
| | - Michael Hünerbein
- Department of General, Visceral and Cancer Surgery, HELIOS Klinikum Berlin-Buch, Berlin, Germany
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17
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Anastasova S, Kassanos P, Yang GZ. Multi-parametric rigid and flexible, low-cost, disposable sensing platforms for biomedical applications. Biosens Bioelectron 2018; 102:668-675. [DOI: 10.1016/j.bios.2017.10.038] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 10/15/2017] [Accepted: 10/16/2017] [Indexed: 01/20/2023]
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18
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An V, Chandra R, Lawrence M. Anastomotic Failure in Colorectal Surgery: Where Are We at? Indian J Surg 2018; 80:163-170. [DOI: 10.1007/s12262-018-1745-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 02/12/2018] [Indexed: 12/22/2022] Open
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19
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Wright EC, Connolly P, Vella M, Moug S. Peritoneal fluid biomarkers in the detection of colorectal anastomotic leaks: a systematic review. Int J Colorectal Dis 2017; 32:935-945. [PMID: 28401350 DOI: 10.1007/s00384-017-2799-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/02/2017] [Indexed: 02/04/2023]
Abstract
PURPOSE Anastomotic leak (AL) in colorectal surgery leads to significant morbidity, mortality and poorer oncological outcomes. Diagnosis of AL is frequently delayed as current methods of detection are not 100% sensitive or specific. 'Biomarkers', such as cytokines and markers of ischaemia, from the milieu of the anastomosis may aid early detection. This paper aims to review the evidence for their role in AL detection, allowing identification of targets for future research. METHODS A systematic review was performed using PubMed, MEDLINE and Cochrane Library databases. Papers concerning detection or prediction of AL with biomarkers were identified. References within the papers were used to identify further relevant articles. RESULTS Research has taken place in small cohorts with varying definitions of AL. Lactate has consistently been shown to be elevated in patients with intra-abdominal complications and ALs. pH on post-operative day 3 showed excellent specificity. Despite mixed results, a meta-analysis found that the cytokines tumour necrosis factor-α and interleukin-6 were elevated early in AL. Detection of bacteria in drain fluid by RT-PCR has good specificity but a high rate of false positives. CONCLUSIONS Peritoneal cytokines, lactate and pH have the potential to identify AL early. The consistency of the results for lactate and pH, alongside the fact that they are easy, quick and inexpensive to test, makes them the most attractive targets. Studies in larger cohorts with standardized definitions of AL are required to clarify their usefulness. Emerging biosensor technology may facilitate the development of small, low-cost and degradable intra-abdominal devices to measure peritoneal fluid biomarkers.
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Affiliation(s)
- Emma C Wright
- Department of General Surgery, Royal Alexandra Hospital, Ward 26 Day Room, Corsebar Road, Paisley, PA2 9PN, UK.
| | - Patricia Connolly
- Department of Biomedical Engineering, Wolfson Centre, University of Strathclyde, Glasgow, G4 0NW, UK
| | - Mark Vella
- Department of General Surgery, Royal Alexandra Hospital, Ward 26 Day Room, Corsebar Road, Paisley, PA2 9PN, UK
| | - Susan Moug
- Department of General Surgery, Royal Alexandra Hospital, Ward 26 Day Room, Corsebar Road, Paisley, PA2 9PN, UK
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20
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Aziz O, Albeyati A, Derias M, Varsani N, Ashrafian H, Athanasiou T, Clark SK, Jenkins JT, Kennedy RH. Anastomotic leaks can be detected within 5 days following ileorectal anastomosis: a case-controlled study in patients with familial adenomatous polyposis. Colorectal Dis 2017; 19:251-259. [PMID: 27444690 DOI: 10.1111/codi.13467] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 06/01/2016] [Indexed: 12/18/2022]
Abstract
AIM To determine the earliest time point at which anastomotic leaks can be detected in patients undergoing total colectomy with primary ileorectal anastomosis for familial adenomatous polyposis. METHOD This was a case-controlled study of 10 anastomotic leak patients vs 20 controls following laparoscopic total colectomy with ileorectal anastomosis for familial adenomatous polyposis (from 96 consecutive patients between 2006 and 2013). Panel time-series data regression was performed using a double subscript structure to include both variables. A generalized least squares multivariate approach was applied in a random effects setting to calculate correlations for observations, with anastomotic leak being the dependent variable. Univariate and multivariate regression calculations were then performed according to individual observations at each recorded time point. Time-series analysis was used to determine when a variable became significant in the leak group. RESULTS Multivariate analysis identified a significant difference between leak and control groups in mean heart rate (P < 0.001), mean respiratory rate (P = 0.017) and mean urine output (P = 0.001). Time-point analysis showed that heart rate was significantly different between leak and control groups at postoperative day 4.25. Multivariate analysis identified a significant difference between groups in alanine transaminase (P = 0.006), bilirubin (P = 0.008), creatinine (P = 0.001), haemoglobin (P < 0.001) and urea (P = 0.007). There were no differences between groups with regard to markers of inflammation such as albumin, white blood cell count, neutrophil count and C-reactive protein. CONCLUSION Anastomotic leaks can be detected early (within 4.5 days of surgery) through changes in physiological, blood test and observational parameters, providing an opportunity for early intervention in these patients to salvage the anastomosis.
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Affiliation(s)
- O Aziz
- Department of Colorectal Surgery, St Mark's Hospital, Harrow, UK.,The Colorectal and Peritoneal Oncology Centre, Christie NHS Foundation Trust, Manchester, UK
| | - A Albeyati
- Department of Colorectal Surgery, St Mark's Hospital, Harrow, UK
| | - M Derias
- Department of Colorectal Surgery, St Mark's Hospital, Harrow, UK
| | - N Varsani
- Department of Colorectal Surgery, St Mark's Hospital, Harrow, UK
| | - H Ashrafian
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - T Athanasiou
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - S K Clark
- Department of Colorectal Surgery, St Mark's Hospital, Harrow, UK.,Department of Surgery and Cancer, Imperial College London, London, UK
| | - J T Jenkins
- Department of Colorectal Surgery, St Mark's Hospital, Harrow, UK.,Department of Surgery and Cancer, Imperial College London, London, UK
| | - R H Kennedy
- Department of Colorectal Surgery, St Mark's Hospital, Harrow, UK.,Department of Surgery and Cancer, Imperial College London, London, UK
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21
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Vallance A, Wexner S, Berho M, Cahill R, Coleman M, Haboubi N, Heald RJ, Kennedy RH, Moran B, Mortensen N, Motson RW, Novell R, O'Connell PR, Ris F, Rockall T, Senapati A, Windsor A, Jayne DG. A collaborative review of the current concepts and challenges of anastomotic leaks in colorectal surgery. Colorectal Dis 2017; 19:O1-O12. [PMID: 27671222 DOI: 10.1111/codi.13534] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 07/27/2016] [Indexed: 02/06/2023]
Abstract
The reduction of the incidence, detection and treatment of anastomotic leakage (AL) continues to challenge the colorectal surgical community. AL is not consistently defined and reported in clinical studies, its occurrence is variably reported and its impact on longterm morbidity and health-care resources has received relatively little attention. Controversy continues regarding the best strategies to reduce the risk. Diagnostic tests lack sensitivity and specificity, resulting in delayed diagnosis and increased morbidity. Intra-operative fluorescence angiography has recently been introduced as a means of real-time assessment of anastomotic perfusion and preliminary evidence suggests that it may reduce the rate of AL. In addition, concepts are emerging about the role of the rectal mucosal microbiome in AL and the possible role of new prophylactic therapies. In January 2016 a meeting of expert colorectal surgeons and pathologists was held in London, UK, to identify the ongoing controversies surrounding AL in colorectal surgery. The outcome of the meeting is presented in the form of research challenges that need to be addressed.
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Affiliation(s)
- A Vallance
- Royal College of Surgeons of England, London, UK
| | - S Wexner
- Cleveland Clinic Florida, Weston, Florida, USA
| | - M Berho
- Cleveland Clinic Florida, Weston, Florida, USA
| | - R Cahill
- University College Dublin, Dublin, Ireland
| | | | - N Haboubi
- University Hospital of South Manchester, Manchester, UK
| | - R J Heald
- Basingstoke and North Hampshire Hospital, Basingstoke, UK
| | | | - B Moran
- Basingstoke and North Hampshire Hospital, Basingstoke, UK
| | | | - R W Motson
- The ICENI Centre, Colchester University Hospital, Colchester, UK
| | - R Novell
- The Royal Free Hospital, London, UK
| | | | - F Ris
- Geneva University Hospitals and Medical School, Geneva, Switzerland
| | - T Rockall
- Royal Surrey County Hospital, Guildford, UK
| | | | - A Windsor
- University College Hospital, London, UK
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22
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de Bruin AFJ, Kornmann VNN, van der Sloot K, van Vugt JL, Gosselink MP, Smits A, Van Ramshorst B, Boerma EC, Noordzij PG, Boerma D, van Iterson M. Sidestream dark field imaging of the serosal microcirculation during gastrointestinal surgery. Colorectal Dis 2016; 18:O103-10. [PMID: 26725570 DOI: 10.1111/codi.13250] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 11/02/2015] [Indexed: 01/06/2023]
Abstract
AIM The study aimed to describe the serosal microcirculation of the human bowel using sidestream dark field imaging, a microscopic technique using polarized light to visualize erythrocytes through capillaries. We also compared its feasibility to the current practice of sublingual microcirculatory assessment. METHOD In 17 patients sidestream dark field measurements were performed during gastrointestinal surgery. Microcirculatory parameters like microvascular flow index (MFI), proportion of perfused vessels (PPV), perfused vessel density (PVD) and total vessel density (TVD) were determined for every patient, sublingually and on the bowel serosa. RESULTS Sixty measurements were done on the bowel of which eight (13%) were excluded, five owing to too much bowel peristalsis and three because of pressure artefacts. Image stability was in favour of sublingual measurements [pixel loss per image, bowel 145 (95% CI 126-164) vs sublingual 55 (95% CI 41-68); P < 0.001] and time to acquire a stable image [bowel 96 s (95% CI 63-129) vs. sublingual 46 s (95% CI 29-64); P = 0.013]. No difference in the MFI was observed [bowel 2.9 (interquartile range 2.87-2.95) vs sublingual 3.0 (interquartile range 2.91-3.0); P = 0.081]. There was a difference in the PPV [bowel 95% (95% CI 94-96) vs sublingual 97% (95% CI 97-99); P < 0.001], PVD [bowel 12.9 mm/mm2 (95% CI 11.1-14.8) vs sublingual 17.4 mm/mm2 (95% CI 15.6-19.1); P = 0.003] and the TVD [bowel 13.6 mm/mm2 (95% CI 11.6-15.6) vs sublingual 17.7 mm/mm2 (95% CI 16.0-19.4); P = 0.008]. CONCLUSION Sidestream dark field imaging is a very promising technique for bowel microcirculatory visualization and assessment. It is comparable to sublingual assessment and the analysis produces a similar outcome with slightly differing anatomical features.
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Affiliation(s)
- A F J de Bruin
- Department of Anesthesiology, Intensive Care and Pain Medicine, St Antonius Hospital, Nieuwegein, The Netherlands
| | - V N N Kornmann
- Department of Surgery, St Antonius Hospital, Nieuwegein, The Netherlands
| | - K van der Sloot
- Department of Anesthesiology, Intensive Care and Pain Medicine, St Antonius Hospital, Nieuwegein, The Netherlands
| | - J L van Vugt
- Department of Surgery, St Antonius Hospital, Nieuwegein, The Netherlands
| | - M P Gosselink
- Department of Surgery, Maasstad Hospital, Rotterdam, The Netherlands
| | - A Smits
- Department of Surgery, St Antonius Hospital, Nieuwegein, The Netherlands
| | - B Van Ramshorst
- Department of Surgery, St Antonius Hospital, Nieuwegein, The Netherlands
| | - E C Boerma
- Department of Intensive Care, Medical Center Leeuwarden, Leeuwarden, The Netherlands
| | - P G Noordzij
- Department of Anesthesiology, Intensive Care and Pain Medicine, St Antonius Hospital, Nieuwegein, The Netherlands
| | - D Boerma
- Department of Surgery, St Antonius Hospital, Nieuwegein, The Netherlands
| | - M van Iterson
- Department of Anesthesiology, Intensive Care and Pain Medicine, St Antonius Hospital, Nieuwegein, The Netherlands
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23
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Wu Z, Boersema GSA, Taha D, Fine I, Menon A, Kleinrensink GJ, Jeekel J, Lange JF. Postoperative Hemodynamic Index Measurement With Miniaturized Dynamic Light Scattering Predicts Colorectal Anastomotic Healing. Surg Innov 2015; 23:115-23. [PMID: 26603692 DOI: 10.1177/1553350615618286] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
INTRODUCTION Perioperative bowel perfusion (local hemodynamic index [LHI]) was measured with a miniaturized dynamic light scattering (mDLS) device, aiming to determine whether anastomotic perfusion correlates with the anastomotic healing process and whether LHI measurement assists in the detection of anastomotic leakage (AL) in colorectal surgery. METHODS A partial colectomy was performed in 21 male Wistar rats. Colonic and anastomotic LHIs were recorded during operation. On postoperative day (POD) 3, the rats were examined for AL manifestations. Anastomotic LHI was recorded before determining the anastomotic bursting pressure (ABP). The postoperative LHI measurements were repeated in 15 other rats with experimental colitis. Clinical manifestations and anastomotic LHI were also determined on POD3. Diagnostic value of LHI measurement was analyzed with the combined data from both experiments. RESULTS Intraoperative LHI measurement showed no correlation with the ABP on POD3. Postoperative anastomotic LHI on POD3 was significantly correlated with ABP in the normal rats (R(2) = 0.52; P < .001) and in the rats with colitis (R(2) = 0.63; P = .0012). Anastomotic LHI on POD3 had high accuracy for identifying ABP <50 mm Hg (Area under the curve = 0.86; standard error = 0.065; P < .001). A cutoff point of 1236 yielded a sensitivity of 100% and a specificity of 65%. On POD3, rats with LHIs <1236 had significantly higher dehiscence rates (40% vs 0%), more weight loss, higher abscess severity, and lower ABPs (P < .05); worse anastomotic inflammation and collagen deposition were also found in the histological examination. CONCLUSION Our data suggest that postoperative evaluation of anastomotic microcirculation with the mDLS device assists in the detection of AL in colorectal surgery.
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Affiliation(s)
- Zhouqiao Wu
- Erasmus University Medical Center, Rotterdam, Netherlands Peking University Cancer Hospital and Institute, Beijing, China
| | | | - Diman Taha
- Erasmus University Medical Center, Rotterdam, Netherlands
| | | | - Anand Menon
- Academic Colorectal Center, Havenziekenhuis, Rotterdam, Netherlands
| | | | | | - Johan F Lange
- Erasmus University Medical Center, Rotterdam, Netherlands
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24
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Knaus WJ, Olson CH. Colo-colonic anastomosis in a continuous-flow left ventricular assist device patient. Asian J Surg 2015; 40:232-235. [PMID: 25773501 DOI: 10.1016/j.asjsur.2015.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Accepted: 01/29/2015] [Indexed: 11/26/2022] Open
Abstract
Noncardiac operations are being increasingly performed on patients with left ventricular assist devices (LVADs). However, little is known on the impact of continuous-flow LVADs on the vascular supply of the colon for anastomoses. In this case, a 67-year-old male supported on an LVAD underwent four successful noncardiac operations including two intestinal anastomoses; left colon and small bowel anastomosis. To the best of our knowledge, no existing literature has reported successful colonic anastomosis on a continuous-flow LVAD. This case illustrates the plausibility of performing colonic anastomoses with appropriately selected patients supported on an LVAD. A 67-year-old male with congestive heart failure underwent LVAD placement for decompensated heart failure while awaiting orthotopic transplantation. During his recovery, he developed a stage IV sacral decubitus ulcer which required a sigmoid loop colostomy placement and a rotational flap. Subsequent stoma closure with partial sigmoid colectomy and stapled anastomosis was performed, and healed without evidence of anastomotic leak. This case illustrates the potential for colonic anastomoses for patients on continuous-flow LVAD support. Although oxygenation is known to be an important aspect of healing, this patient's outcome suggests that intestinal anastomoses can be performed on the induced pulseless environment of an LVAD. Further studies will be needed to further elucidate the success of longer segment resections and appropriate surgical candidates.
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25
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McDermott FD, Heeney A, Kelly ME, Steele RJ, Carlson GL, Winter DC. Systematic review of preoperative, intraoperative and postoperative risk factors for colorectal anastomotic leaks. Br J Surg 2015; 102:462-79. [PMID: 25703524 DOI: 10.1002/bjs.9697] [Citation(s) in RCA: 512] [Impact Index Per Article: 56.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 09/09/2014] [Accepted: 10/08/2014] [Indexed: 02/06/2023]
Abstract
BACKGROUND Anastomotic leak (AL) represents a dreaded complication following colorectal surgery, with a prevalence of 1-19 per cent. There remains a lack of consensus regarding factors that may predispose to AL and the relative risks associated with them. The objective was to perform a systematic review of the literature, focusing on the role of preoperative, intraoperative and postoperative factors in the development of colorectal ALs. METHODS A systematic review was performed to identify adjustable and non-adjustable preoperative, intraoperative and postoperative factors in the pathogenesis of AL. Additionally, a severity grading system was proposed to guide treatment. RESULTS Of 1707 papers screened, 451 fulfilled the criteria for inclusion in the review. Significant preoperative risk factors were: male sex, American Society of Anesthesiologists fitness grade above II, renal disease, co-morbidity and history of radiotherapy. Tumour-related factors were: distal site, size larger than 3 cm, advanced stage, emergency surgery and metastatic disease. Adjustable risk factors were: smoking, obesity, poor nutrition, alcohol excess, immunosuppressants and bevacizumab. Intraoperative risk factors were: blood loss/transfusion and duration of surgery more than 4 h. Stomas lessen the consequences but not the prevalence of AL. In the postoperative period, CT is the most commonly used imaging tool, with or without rectal contrast, and a C-reactive protein level exceeding 150 mg/l on day 3-5 is the most sensitive biochemical marker. A five-level classification system for AL severity and appropriate management is presented. CONCLUSION Specific risk factors and their potential correction or indications for stoma were identified. An AL severity score is proposed to aid clinical decision-making.
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Affiliation(s)
- F D McDermott
- Centre for Colorectal Disease, St Vincent's University Hospital, Dublin, Ireland
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van Vugt JLA, Reisinger KW, Derikx JPM, Boerma D, Stoot JHMB. Improving the outcomes in oncological colorectal surgery. World J Gastroenterol 2014; 20:12445-12457. [PMID: 25253944 PMCID: PMC4168077 DOI: 10.3748/wjg.v20.i35.12445] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Revised: 03/18/2014] [Accepted: 06/17/2014] [Indexed: 02/06/2023] Open
Abstract
During the last several decades, colorectal cancer surgery has experienced some major perioperative improvements. Preoperative risk-assessment of nutrition, frailty, and sarcopenia followed by interventions for patient optimization or an adapted surgical strategy, contributed to improved postoperative outcomes. Enhanced recovery programs or fast-track surgery also resulted in reduced length of hospital stay and overall complications without affecting patient safety. After an initially indecisive start due to uncertainty about oncological safety, the most significant improvement in intraoperative care was the introduction of laparoscopy. Laparoscopic surgery for colon and rectal cancer is associated with better short-term outcomes, whereas long-term outcomes regarding survival and recurrence rates are comparable. Nevertheless, long-term results in rectal surgery remain to be seen. Early recognition of anastomotic leakage remains a challenge, though multiple improvements have allowed better management of this complication.
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Shogan BD, An GC, Schardey HM, Matthews JB, Umanskiy K, Fleshman JW, Hoeppner J, Fry DE, Garcia-Granereo E, Jeekel H, van Goor H, Dellinger EP, Konda V, Gilbert JA, Auner GW, Alverdy JC. Proceedings of the first international summit on intestinal anastomotic leak, Chicago, Illinois, October 4-5, 2012. Surg Infect (Larchmt) 2014; 15:479-89. [PMID: 25215465 DOI: 10.1089/sur.2013.114] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE The first international summit on anastomotic leak was held in Chicago in October, 2012 to assess current knowledge in the field and develop novel lines of inquiry. The following report is a summary of the proceedings with commentaries and future prospects for clinical trials and laboratory investigations. BACKGROUND Anastomotic leakage remains a devastating problem for the patient, and a continuing challenge to the surgeon operating on high-risk areas of the gastrointestinal tract such as the esophagus and rectum. Despite the traditional wisdom that anastomotic leak is because of technique, evidence to support this is weak-to-non-existent. Outcome data continue to demonstrate that expert high-volume surgeons working in high-volume centers continue to experience anastomotic leaks and that surgeons cannot predict reliably which patients will leak. METHODS A one and one-half day summit was held and a small working group assembled to review current practices, opinions, scientific evidence, and potential paths forward to understand and decrease the incidence of anastomotic leak. RESULTS RESULTS of a survey of the opinions of the group demonstrated that the majority of participants believe that anastomotic leak is a complicated biologic problem whose pathogenesis remains ill-defined. The group opined that anastomotic leak is underreported clinically, it is not because of technique except when there is gross inattention to it, and that results from animal models are mostly irrelevant to the human condition. CONCLUSIONS A fresh and unbiased examination of the causes and strategies for prevention of anastomotic leak needs to be addressed by a continuous working group of surgeons, basic scientists, and clinical trialists to realize a real and significant reduction in its incidence and morbidity. Such a path forward is discussed.
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Intraoperative assessment of colorectal anastomotic integrity: a systematic review. Surg Endosc 2014; 28:2513-30. [PMID: 24718665 DOI: 10.1007/s00464-014-3520-z] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Accepted: 03/21/2014] [Indexed: 02/07/2023]
Abstract
BACKGROUND Surgeons have attempted to minimize postoperative anastomotic complications by employing intraoperative tests and manoeuvres to assess colorectal anastomotic integrity. These have evolved over time with improvement in operative technology and techniques. This systematic review aims to examine the impact of such intraoperative assessments. METHODS A systematic review of studies assessing intraoperative anastomotic assessments and their impact on postoperative anastomotic complications was performed. Intraoperative measures undertaken as a result of intraoperative assessments and postoperative anastomotic complications were analysed. RESULTS 37 Studies were identified. 13 studies evaluated basic mechanical patency tests, ten studies evaluated endoscopic visualisation techniques and 14 studies evaluated microperfusion techniques. Postoperative anastomotic complications were significantly lower in patients tested with basic mechanical patency tests compared to those untested (non-RCT: 4.1 vs. 8.1 %, p = 0.03, RCTs: 5.8 vs. 16.0 %, p = 0.024). There were no differences in postoperative anastomotic complications between tested and non-tested cohorts in non-randomised cohort studies evaluating endoscopic visualisation techniques. However, intraoperative measures taken after abnormal intraoperative tests may have reduced the number of postoperative complications. Perfusion analysis techniques are not in routine widespread clinical practice as yet, but newer techniques such as fluorescent dyes and imaging under near infrared light show technical feasibility. CONCLUSIONS Intraoperative colorectal anastomotic assessment has evolved together with advancement of technology in the surgical setting. Moderate benefit in terms of lower postoperative anastomotic complications has been shown with basic mechanical patency testing and more recently with intraoperative endoscopic visualisation of colorectal anastomoses. The next advance and possible introduction into routine practice may include the use of microperfusion techniques. The latest in this group of techniques, which utilise autofluorescent dyes such as Indocyanine green, hold great potential. Well-planned controlled studies or ideally, randomised controlled trials need to be conducted to further assess the benefit of these latest techniques.
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Daams F, Wu Z, Lahaye MJ, Jeekel J, Lange JF. Prediction and diagnosis of colorectal anastomotic leakage: A systematic review of literature. World J Gastrointest Surg 2014; 6:14-26. [PMID: 24600507 PMCID: PMC3942535 DOI: 10.4240/wjgs.v6.i2.14] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 10/30/2013] [Accepted: 01/14/2014] [Indexed: 02/06/2023] Open
Abstract
Although many studies have focused on the preoperative risk factors of anastomotic leakage after colorectal surgery (CAL), postoperative delay in diagnosis is common and harmful. This review provides a systematic overview of all available literature on diagnostic tools used for CAL. A systematic search of literature was undertaken using Medline, Embase, Cochrane and Web-of-Science libraries. Articles were selected when a diagnostic or prediction tool for CAL was described and tested. Two reviewers separately assessed the eligibility and level of evidence of the papers. Sixty-nine articles were selected (clinical methods: 11, laboratory tests: 12, drain fluid analysis: 12, intraoperative techniques: 22, radiology: 16). Clinical scoring leads to early awareness of probability of CAL and reduces delay of diagnosis. C-reactive protein measurement at postoperative day 3-4 is helpful. CAL patients are characterized by elevated cytokine levels in drain fluid in the very early postoperative phase in CAL patients. Intraoperative testing using the air leak test allows intraoperative repair of the anastomosis. Routine contrast enema is not recommended. If CAL is clinically suspected, rectal contrast-computer tomography is recommended by a few studies. In many studies a “no-test” control group was lacking, furthermore no golden standard for CAL is available. These two factors contributed to a relatively low level of evidence in the majority of the papers. This paper provides a systematic overview of literature on the available tools for diagnosing CAL. The study shows that colorectal surgery patients could benefit from some diagnostic interventions that can easily be performed in daily postoperative care.
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Hirst NA, Tiernan JP, Millner PA, Jayne DG. Systematic review of methods to predict and detect anastomotic leakage in colorectal surgery. Colorectal Dis 2014; 16:95-109. [PMID: 23992097 DOI: 10.1111/codi.12411] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Accepted: 05/01/2013] [Indexed: 12/11/2022]
Abstract
AIM Anastomotic leakage is a serious complication of gastrointestinal surgery resulting in increased morbidity and mortality, poor function and predisposing to cancer recurrence. Earlier diagnosis and intervention can minimize systemic complications but is hindered by current diagnostic methods that are non-specific and often uninformative. The purpose of this paper is to review current developments in the field and to identify strategies for early detection and treatment of anastomotic leakage. METHOD A systematic literature search was performed using the MEDLINE, Embase, PubMed and Cochrane Library databases. Search terms included 'anastomosis' and 'leak' and 'diagnosis' or 'detection' and 'gastrointestinal' or 'colorectal'. Papers concentrating on the diagnosis of gastrointestinal anastomotic leak were identified and further searches were performed by cross-referencing. RESULTS Computerized tomography CT scanning and water-soluble contrast studies are the current preferred techniques for diagnosing anastomotic leakage but suffer from variable sensitivity and specificity, have logistical constraints and may delay timely intervention. Intra-operative endoscopy and imaging may offer certain advantages, but the ability to predict anastomotic leakage is unproven. Newer techniques involve measurement of biomarkers for anastomotic leakage and have the potential advantage of providing cheap real-time monitoring for postoperative complications. CONCLUSION Current diagnostic tests often fail to diagnose anastomotic leak at an early stage that enables timely intervention and minimizes serious morbidity and mortality. Emerging technologies, based on detection of local biomarkers, have achieved proof of concept status but require further evaluation to determine whether they translate into improved patient outcomes. Further research is needed to address this important, yet relatively unrecognized, area of unmet clinical need.
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Affiliation(s)
- N A Hirst
- Section of Translational Anaesthesia and Surgical Sciences, Leeds Institute of Molecular Medicine, St James's University Hospital, Leeds, UK
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Yang L, Huang XE, Xu L, Zhou X, Zhou JN, Yu DS, Li DZ, Guan X. Acidic Pelvic Drainage as a Predictive Factor For Anastomotic Leakage after Surgery for Patients with Rectal Cancer. Asian Pac J Cancer Prev 2013; 14:5441-7. [DOI: 10.7314/apjcp.2013.14.9.5441] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Procalcitonin and C-reactive protein as early predictors of anastomotic leak in colorectal surgery: a prospective observational study. Dis Colon Rectum 2013; 56:475-83. [PMID: 23478615 DOI: 10.1097/dcr.0b013e31826ce825] [Citation(s) in RCA: 139] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Although the early diagnosis of anastomotic leak is a key point in reducing its clinical consequences, in daily practice, anastomotic leak diagnosis is often late. OBJECTIVE The aim of this study was to determine whether procalcitonin and C-reactive protein are good predictors of anastomotic leak in colorectal surgery. DESIGN This is a prospective observational study. SETTINGS This study was conducted by a specialized colorectal multidisciplinary team of a tertiary teaching hospital. PATIENTS A series of 205 consecutive patients who underwent elective colorectal surgery in a specialized unit was prospectively analyzed. The following data were collected: demographic, surgical, ASA class, POSSUM, and morbidity. During the first 5 postoperative days, procalcitonin, C-reactive protein, leukocytes, platelets, and vital signs were evaluated daily. INTERVENTIONS Daily assessment of clinical variable and serological data were conducted in the first 5 postoperative days. MAIN OUTCOME MEASURES The primary outcome measure was the area under the curve at receiving operating characteristic curve analysis of the different variables in relation to the anastomotic leak. RESULTS Anastomotic leak was detected in 17 (8.3%) patients; 11(5.4%) of the patients had a major anastomotic leak (need for drainage or reoperation). None of the variables evaluated were shown to be reliable in the early detection of anastomotic leak, considering both minor and major (maximum area under the curve <0.80). In contrast, when considering only major anastomotic leaks, procalcitonin and C-reactive protein were reliable predictors on postoperative days 3 to 5 (p < 0.0001, area under the curve >0.80). The best combination was procalcitonin at postoperative day 5 (area under the curve = 0.86), with a cutoff of 0.31 ng/mL, resulting in a 100% sensitivity, 72% specificity, 100% negative predictive value, and 17% positive predictive value. LIMITATIONS Only symptomatic patients were investigated to rule out anastomotic leakage. CONCLUSIONS Procalcitonin and C-reactive protein are both reliable predictors of major anastomotic leak after colorectal resection, although procalcitonin is more accurate. Raised procalcitonin and C-reactive protein serum concentration on postoperative days 3 to 5 renders necessary a careful evaluation of the patient before discharge.
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Davis B, Rivadeneira DE. Complications of colorectal anastomoses: leaks, strictures, and bleeding. Surg Clin North Am 2012. [PMID: 23177066 DOI: 10.1016/j.suc.2012.09.014] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Intestinal anastomosis is an essential part of surgical practice, and with it comes the inherent risk of complications including leaks, strictures, and bleeding, which result in significant morbidity and occasional mortality. Understanding the myriad of risk factors and the strength of the data helps guide a surgeon as to the safety of undertaking an operation in which a primary anastomosis is to be considered. This article reviews the risk factors, management, and outcomes associated with anastomotic complications.
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Affiliation(s)
- Bradley Davis
- Department of Surgery, University of Cincinnati, Cincinnati, OH 45267, USA.
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Swift AJ, Parker P, Chiu K, Hunter IA, Hartley JE, Byass OR. Intraoperative contrast-enhanced sonography of bowel blood flow: preliminary experience. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2012; 31:1-5. [PMID: 22215762 DOI: 10.7863/jum.2012.31.1.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
OBJECTIVES The potential to predict, and therefore avoid, anastomotic failure has eluded generations of colon and rectal surgeons to date. A reliable, reproducible method of assessing bowel blood flow therefore would be of enormous potential clinical relevance. To our knowledge, intraoperative contrast-enhanced sonography of the bowel has not been performed previously. We present our study assessing the feasibility of using contrast-enhanced sonography to study bowel perfusion intraoperatively. METHODS We studied 8 patients (4 male and 4 female) with an age range of 52 to 81 years who underwent colorectal surgery (right hemicolectomies, n = 3; Hartmann procedure, n = 1; anterior resections, n = 2; and bowel resections with ileocolic anastomoses, n = 2). A 5-mL bolus of a sulfur hexafluoride contrast agent solution was injected before and after vascular ligation with simultaneous noncompression ultrasound scanning directly over the large bowel. The patients were followed clinically to assess for leaks. Contrast-enhanced sonographic time-intensity curves were generated for the time to peak and maximum amplitude. RESULTS Moderate interobserver agreement was shown for the time to peak (κ = 0.50) and maximum amplitude (κ = 0.42), and moderate intraobserver agreement was shown for the time to peak (κ= 0.53) and maximum amplitude (κ= 0.53). No significant differences were shown between the time to peak (P = .28) and maximum amplitude (P = .49) for the preligation and postligation scans. CONCLUSIONS To our knowledge, intraoperative contrast-enhanced sonography of the bowel has not been performed previously. We have shown the technique to be feasible with good intraobserver and interobserver agreement. Further work is ongoing to optimize the technique and assess its use in predicting anastomotic breakdown.
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Affiliation(s)
- Andrew J Swift
- Department of Radiology, Castle Hill Hospital, Hull and East Yorkshire Hospitals National Health Service Trust, Cottingham, East Yorkshire, England.
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Almeida AB, Faria G, Moreira H, Pinto-de-Sousa J, Correia-da-Silva P, Maia JC. Elevated serum C-reactive protein as a predictive factor for anastomotic leakage in colorectal surgery. Int J Surg 2011; 10:87-91. [PMID: 22222182 DOI: 10.1016/j.ijsu.2011.12.006] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2011] [Revised: 11/09/2011] [Accepted: 12/21/2011] [Indexed: 12/12/2022]
Abstract
BACKGROUND C-reactive protein (CRP) has been used as an indicator of postoperative complications in abdominal surgery. Its short half-life makes it a reliable marker of the systemic inflammatory response secondary to a surgical procedure or to the appearance of complications, rapidly returning to normal values with the recovery of the patient. AIM To demonstrate the value of sequential serum determinations of postoperative C-reactive protein (CRP) and white blood cell counts (WBC) in the identification of increased risk of anastomotic leakage after colorectal surgery. METHODS We reviewed the daily postoperative serum CRP and white blood cell counts in 173 patients who underwent surgery for colorectal disease with anastomosis, between January 2008 and October 2009. Patients with anastomotic leakage (Group A, n = 24) were compared to patients without leakage (Group B, n = 149). Patients with ongoing infections before surgery or with acquired postoperative infections other than leakage were excluded. Mean pre- and postoperative values of CRP and WBC were compared. RESULTS The diagnosis of anastomotic leakage was made between the 4th and 11th postoperative day (POD; mean 7th POD). The daily average values of serum CRP were significantly higher in group A starting at the 2nd POD and remained significantly elevated until the diagnosis of leakage (p = 0.003). The cut-off value of 140 mg/L on the 3rd POD maximized the sensitivity (78%) and specificity (86%) of serum CRP in assessing the risk of leakage. Comparison of postoperative serum WBC values did not show any significant differences between the two groups until the 6th POD. CONCLUSION According to these results, an early and persistent elevation of CRP after colorectal surgery with anastomosis, is a marker of anastomotic leakage. A cut-off value > 140 mg/L on POD3 maximizes sensitivity and specificity.
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Affiliation(s)
- A B Almeida
- Department of General Surgery of Centro Hospitalar de São João, E.P.E., Alameda Professor Hernâni Monteiro, 4200 319 Porto, Portugal.
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Urbanavičius L, Pattyn P, de Putte DV, Venskutonis D. How to assess intestinal viability during surgery: A review of techniques. World J Gastrointest Surg 2011; 3:59-69. [PMID: 21666808 PMCID: PMC3110878 DOI: 10.4240/wjgs.v3.i5.59] [Citation(s) in RCA: 124] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2010] [Revised: 03/18/2011] [Accepted: 03/25/2011] [Indexed: 02/06/2023] Open
Abstract
Objective and quantitative intraoperative methods of bowel viability assessment are essential in gastrointestinal surgery. Exact determination of the borderline of the viable bowel with the help of an objective test could result in a decrease of postoperative ischemic complications. An accurate, reproducible and cost effective method is desirable in every operating theater dealing with abdominal operations. Numerous techniques assessing various parameters of intestinal viability are described by the studies. However, there is no consensus about their clinical use. To evaluate the available methods, a systematic search of the English literature was performed. Virtues and drawbacks of the techniques and possibilities of clinical application are reviewed. Valuable parameters related to postoperative intestinal anastomotic or stoma complications are analyzed. Important issues in the measurement and interpretation of bowel viability are discussed. To date, only a few methods are applicable in surgical practice. Further studies are needed to determine the limiting values of intestinal tissue oxygenation and flow indicative of ischemic complications and to standardize the methods.
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Affiliation(s)
- Linas Urbanavičius
- Linas Urbanavičius, Donatas Venskutonis, Lithuanian University of Health Sciences, Department of General Surgery, Josvainiu str. 2; Kaunas, LT-47144, Lithuania
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Fouda E, El Nakeeb A, Magdy A, Hammad EA, Othman G, Farid M. Early detection of anastomotic leakage after elective low anterior resection. J Gastrointest Surg 2011; 15:137-44. [PMID: 20978948 DOI: 10.1007/s11605-010-1364-y] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2010] [Accepted: 10/12/2010] [Indexed: 01/31/2023]
Abstract
BACKGROUND Colorectal anastomotic leakage is a serious complication leading to major postoperative morbidity and mortality. In the present study, we investigated the early detection of anastomotic leakage before its clinical presentation. METHOD Fifty-six patients with rectal cancer were included prospectively in this study. All patients underwent elective low anterior resection. Peritoneal samples were collected from the abdominal drains at the first, third, and fifth days postoperatively for bacteriological study (quantitative cultures for both aerobes and anaerobes) and cytokines (IL-6, IL-10, TNF) measurement. Patients were divided into two groups: those without symptomatic or clinical evidence of anastomotic leakage (AL; group 1) and those with clinical evidence of AL (group 2). Study variables included hospital stay, wound infection, operative time, blood loss, height of anastomosis, intraperitoneal cytokines, and microbiological study of peritoneal fluid. RESULT Clinically evident AL occurred in eight patients (14.3%) and diagnosed postoperatively on median day 6. Intraperitoneal bacterial colonization and cytokine levels were significantly higher in patients with clinical evidence of AL. Wound infection was significantly higher in anastomotic leakage group. The hospital stay for the patients with anastomotic leakage was significantly longer than those without AL (14 ± 1.41 vs. 5.43 ± 0.89 days). A significant difference among two groups was observed regarding operative time, blood loss, blood transfusion, and height of the anastomosis. CONCLUSION The peritoneal cytokines levels and intraperitoneal bacterial colonization might be an additional diagnostic tool that can support the decision making of surgeons for early detection of anastomotic leak in colorectal surgery.
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Affiliation(s)
- Elyamani Fouda
- General Surgery Department, Colorectal Unit, Mansoura University Hospital, Mansoura, Egypt
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Karliczek A, Benaron DA, Baas PC, Zeebregts CJ, Wiggers T, van Dam GM. Intraoperative assessment of microperfusion with visible light spectroscopy for prediction of anastomotic leakage in colorectal anastomoses. Colorectal Dis 2010; 12:1018-25. [PMID: 19681979 DOI: 10.1111/j.1463-1318.2009.01944.x] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PURPOSE Anastomotic leakage is associated with increased morbidity and mortality. However, there is no accurate tool to predict its occurrence. We evaluated the predictive value of visible light spectroscopy (VLS), a novel method to measure tissue oxygenation [saturated O(2) (StO(2) )], for anastomotic leakage of the colon and the rectum. METHOD Oxygen saturation in the bowel was measured in 77 colorectal resections. The anastomosis was between 2 and 30 cm (mean 13 cm) from the anal verge. The oxygen saturation was measured in the colon and rectum before and after anastomosis construction. This was compared with a reference measurement in the caecum. Data on postoperative complications were prospectively collected. RESULTS Anastomotic leakage occurred in 14 (18%) patients. When compared with a leaking anastomosis, normal anastomoses showed rising O(2) values during the operation (mean StO(2) 72.1 ± 9.0-76.7 ± 8.0 vs 73.9 ± 7.9-73.1 ± 7.4) (P ≤ 0.05). There were also higher StO(2) values in the caecum compared with those which ultimately leaked (73.6 ± 5.7 normal anastomoses, 69.6 ± 5.6 anastomotic leaks) (P ≤ 0.05). Both StO(2) values were predictive of anastomotic leakage. CONCLUSION Tissue oxygenation O(2) appears to be a potentially useful means of predicting anastomotic leakage after colorectal anastomosis.
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Affiliation(s)
- A Karliczek
- Department of Surgery, University Medical Center Groningen, Groningen, The Netherlands.
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Abstract
OBJECTIVE This systematic review was designed to determine postoperative complication rates of radical surgery for rectal cancer (abdominal perineal resection and anterior resection). SUMMARY OF BACKGROUND DATA Lack of accepted complication rates for rectal cancer surgery may hinder quality improvement efforts and may impede the conception of future studies because of uncertainty regarding the expected event rates. METHODS All prospective studies of rectal cancer receiving radical surgery published between 1990 and August 2008 were obtained by searching Ovid MEDLINE, EMBASE, as well as ASCO GI, CAGS, and ASCRS meeting abstracts between 2004 and 2008. There was no language restriction. The outcomes extracted were anastomotic leak, pelvic sepsis, postoperative death, wound infection, and fecal incontinence. Summary complication rates were obtained using a random effects model; the Z-test was used to test for study heterogeneity. RESULTS Fifty-three prospective cohort studies and 45 randomized controlled studies with 36,315 patients (24,845 patients had an anastomosis) were eligible for inclusion. Most of the studies found were based in continental Europe (58%), followed by Asia (25%), United Kingdom (10%), North America (5%), and Australia/New Zealand. The anastomotic leak rate, reported in 84 studies, was 11% (95% CI: 10, 12); the pelvic sepsis rate, in 29 studies, was 12% (9, 16); the postoperative death rate, in 75 studies, was 2% (2, 3); and the wound infection rate, in 50 studies, was 7% (5, 8). Fecal incontinence rates were reported in too few studies and so heterogeneously that numerical summarization was inappropriate. Year of publication, use of preoperative radiation, use of laparoscopy, and use of protecting stoma were not significant variables, but average age, median tumor height, and method of detection (clinical vs. radiologic) showed significance to explain heterogeneity in anastomotic leak rates. Year of publication, study origin, average age, and use of laparoscopy were significant, but median tumor height and preoperative radiation use were not significant in explaining heterogeneity among observed postoperative death rates. With multivariable analysis, only average age for anastomotic leak and year of publication for postoperative death remained significant. CONCLUSIONS Benchmark complication rates for radical rectal cancer surgery were obtained for use in sample size calculations in future studies and for quality control purposes. Postoperative death rates showed improvement in recent years.
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Increased serum levels of C-reactive protein precede anastomotic leakage in colorectal surgery. World J Surg 2010; 34:140-6. [PMID: 19953248 DOI: 10.1007/s00268-009-0304-z] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND Anastomotic leakage (AL) is a severe complication following colorectal surgery. C-reactive protein (CRP) is considered to be an indicator of postoperative complications. MATERIALS AND METHODS Between August 2002 and August 2005 342 colorectal resections with primary anastomosis were performed at the Department of General and Vascular Surgery. Johann Wolfgang Goethe-University Frankfurt. For this retrospective study serum CRP was measured daily until postoperative day 7, and in cases of AL it was excluded from statistical analysis beginning with the day on which the AL was diagnosed. RESULTS Twenty-six of 342 (7.6%) patients developed AL at a mean of 8.7 days postoperatively. The in-hospital mortality was 3.5% for all patients and was significantly higher in the AL group (11.5 versus 2.8%). The CRP level in the two groups showed a peak on day 2.5 and day 2.2, respectively. In case of postoperative AL the CRP level did not show a marked decline during the next few days. Compared to the cases where AL did not develop, there was a significantly higher increase in CRP from the preoperative level to the levels measured on postoperative day 3, 5, 6 and 7. Higher CRP levels were observed in patients experiencing pneumonia or urinary tract infection, but the decrease of CRP values was not as slow as in cases of AL. CONCLUSIONS This study shows serum CRP level to be a relevant marker in detecting postoperative complications in colorectal surgery. Prolonged elevation and a missing decline in CRP level precede the occurrence of AL.
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Gao YF, Dong M. Risk factors for anastomotic leakage after anterior resection for rectal cancer. Shijie Huaren Xiaohua Zazhi 2010; 18:803-807. [DOI: 10.11569/wcjd.v18.i8.803] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Anastomotic leakage is a common complication after anterior resection for rectal cancer. It can increase postoperative mortality rate and local tumor recurrence rate, lower long-term survival, result in long-term impairment of anorectal function and increase patients' suffering, raise treatment costs, and prolong hospital stay. A better understanding of the risk factors for AL has important clinical implications for the management of such complication.
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Rahbari NN, Weitz J, Hohenberger W, Heald RJ, Moran B, Ulrich A, Holm T, Wong WD, Tiret E, Moriya Y, Laurberg S, den Dulk M, van de Velde C, Büchler MW. Definition and grading of anastomotic leakage following anterior resection of the rectum: A proposal by the International Study Group of Rectal Cancer. Surgery 2010; 147:339-51. [DOI: 10.1016/j.surg.2009.10.012] [Citation(s) in RCA: 787] [Impact Index Per Article: 56.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2009] [Accepted: 10/05/2009] [Indexed: 12/11/2022]
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Farke S, Bouchard R, Blumberg C, Keller R, Roblick UJ, Bruch HP, Fischer F. Mobilization of the Splenic Flexure: A Standard in Laparoscopic Left Colon and Rectum Resections! Surg J (N Y) 2010. [DOI: 10.3923/sjour.2010.31.35] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Akasu T, Takawa M, Yamamoto S, Yamaguchi T, Fujita S, Moriya Y. Risk factors for anastomotic leakage following intersphincteric resection for very low rectal adenocarcinoma. J Gastrointest Surg 2010; 14:104-11. [PMID: 19841989 DOI: 10.1007/s11605-009-1067-4] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2009] [Accepted: 10/06/2009] [Indexed: 02/07/2023]
Abstract
BACKGROUND The aim of this study was to perform a retrospective analysis of the risk factors for anastomotic leakage following intersphincteric resection (ISR) for very low rectal cancer. METHODS Between 1993 and 2007, 120 patients with T1-T3 rectal adenocarcinomas located 1 to 5 cm (median 3 cm) from the anal verge underwent ISR without radiotherapy. Univariate and multivariate analyses of 47 prospectively recorded parameters were conducted. RESULTS All patients had total mesorectal excision after complete bowel preparation. Of them, 103 underwent partial resection, and 17 underwent complete resection of the internal sphincter. Some 108 patients had a defunctioning stoma. Morbidity and mortality rates were 33% and 0.8%, respectively. Fifteen patients (13%) developed clinical leakage, and six (5%) had severe leakage causing relaparotomy, permanent stoma, or death. Univariate analysis of risk factors for clinical leakage revealed tumor annularity, intraoperative blood transfusion, and pulmonary disease to be significant. Multivariate analysis showed transfusion (hazard ratio, 6.5 [95% confidence interval, 1.4 to 30]; p = 0.018) and pulmonary disease (6.3 [1.6 to 26]; p = 0.009) to be independently significant. Moreover, transfusion (71 [3.0 to 1000]; p = 0.008), colonic J-pouch (32 [1.8 to 500]; p = 0.018), and pulmonary disease (32 [1.1 to 1000]; p = 0.044) were independently associated with severe leakage. CONCLUSIONS This study suggests intraoperative blood transfusion and pulmonary disease as independent risk factors for clinical and severe leakage following ISR and colonic J-pouch as that for severe leakage. By considering these factors, we may be able to stratify high-risk patients and prepare countermeasures.
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Affiliation(s)
- Takayuki Akasu
- Colorectal Surgery Division, National Cancer Center Hospital, 5-1-1, Tsukiji, Chuo-ku, Tokyo 104-0045, Japan.
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Posma LAE, Hendriks T, Verhofstad AAJ, de Man BM, Lomme RMLM, Bleichrodt RP. Reduction of oxygenation and blood flow in pedicled bowel segments in the rat and its consequences for anastomotic healing. Dis Colon Rectum 2010; 53:93-100. [PMID: 20010358 DOI: 10.1007/dcr.0b013e3181bc05a2] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
PURPOSE Experimental studies indicate that perioperative hypoperfusion impairs anastomotic healing. In bowel surgery, the part of bowel that will be anastomosed is often pedicled, leaving the blood supply dependent on the marginal artery only. Little is known about the blood supply in such a segment, and whether anastomotic strength is affected when flow would be reduced. This study describes oxygenation and blood flow in pedicled bowel segments in the rat and investigates whether early anastomotic strength changes with variations in blood flow. METHODS In rats, pedicled segments were created in ileum and colon by successive ligation of the feeding arteries. Oxygenation and blood flow were measured in the distal part of this segment by use of near-infrared spectroscopy with indocyanine green as an intravascular tracer. In a second experiment, a short pedicled colonic segment was created and, after flow measurements, an anastomosis was constructed. Wound strength and hydroxyproline content were analyzed 2 and 5 days after operation. RESULTS After creation of a pedicled segment, the concentration of oxygenated hemoglobin decreased significantly. Blood flow also significantly decreased to even less than 10% of baseline. A very large variation was observed between animals, in particular, after ligation of the first arteries. The strength of colonic anastomoses was not significantly correlated with the blood flow in the pedicled segment before anastomotic construction. CONCLUSIONS The creation of a pedicled bowel segment greatly reduces tissue oxygenation and blood flow to its distal part. Such impaired perioperative flow does not significantly affect early wound strength after anastomotic construction.
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Affiliation(s)
- Lisanne A E Posma
- Department of Surgery, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands.
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Serralta De Colsa D, Arjona Medina I, García-Marín A, Martín-Gil J, Pérez-Díaz MD, Turégano Fuentes F. Factores predictores de mortalidad en la colitis isquémica grave: análisis de 101 pacientes intervenidos. Cir Esp 2009; 85:348-53. [DOI: 10.1016/j.ciresp.2008.12.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2008] [Accepted: 12/28/2008] [Indexed: 11/16/2022]
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Karliczek A, Benaron DA, Zeebregts CJ, Wiggers T, van Dam GM. Intraoperative Ischemia of the Distal End of Colon Anastomoses as Detected With Visible Light Spectroscopy Causes Reduction of Anastomotic Strength. J Surg Res 2009; 152:288-95. [DOI: 10.1016/j.jss.2008.04.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2007] [Revised: 03/04/2008] [Accepted: 04/10/2008] [Indexed: 01/10/2023]
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Adenoma detection rate and the quality of colonoscopy: the sword has two edges. Dis Colon Rectum 2008; 51:520-3. [PMID: 18322755 DOI: 10.1007/s10350-008-9239-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2007] [Revised: 11/14/2007] [Accepted: 11/14/2007] [Indexed: 02/08/2023]
Abstract
With the increasing demand for colonoscopy for colorectal cancer screening and surveillance of colorectal adenomas and carcinomas, there has been an increasing emphasis on the quality of colonoscopy. Few publications have considered the full implications of pushing the adenoma detection rate as a prime quality indicator. In this article, some of the potential problems with this course are discussed and an alternative approach is suggested. Although defining and measuring quality in colonoscopy is important, further work needs to be done to arrive at a practical, clinically meaningful way of quality assessment.
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Early prediction of anastomotic leakage after colorectal surgery by measuring peritoneal cytokines: Prospective study. Int J Surg 2008; 6:28-35. [DOI: 10.1016/j.ijsu.2007.10.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2007] [Revised: 09/24/2007] [Accepted: 10/03/2007] [Indexed: 12/18/2022]
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