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Berggren J, Ottosson JN, Albinsson J, Sheikh R, Merdasa A, Tenland K. Forehead flap perfusion monitored by laser speckle contrast imaging: Importance of flap length and thickness. JPRAS Open 2024; 40:222-229. [PMID: 38681530 PMCID: PMC11046244 DOI: 10.1016/j.jpra.2024.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 03/24/2024] [Indexed: 05/01/2024] Open
Abstract
Purpose Forehead flaps are commonly used in oculoplastic surgery to cover defects after tumor excision. Blood perfusion is vital for flap survival. The aim of this study was to monitor the perfusion in forehead flaps and investigate the impact of flap length and thickness. Methods Nineteen forehead flaps in patients undergoing direct brow lift were studied. Perfusion was monitored using laser speckle contrast imaging, immediately after raising flaps consisting of epidermis, dermis, and subcutaneous tissue, and after removing the subcutaneous tissue resulting in a thin flap. Results Perfusion decreased gradually along the length, the mean value being 44% at 5 mm and 26% at 15 mm from the base, in thick flaps. Perfusion was significantly lower in thin flaps, being 13% when measured 15 mm from the flap base (p < 0.0024). Perfusion was better preserved in thick than in thin flaps. Very low perfusion was observed 16.7 mm (16.0-17.3 mm) from the base in thick flaps, and from 10.2 mm (9.8-10.6 mm) from the base in thin flaps (p < 0.0001). Conclusions Flap thickness is important in maintaining adequate blood perfusion and thus increasing the probability of flap survival. This may be particularly important in long flaps and in patients with impaired microcirculation.
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Affiliation(s)
- Johanna Berggren
- Department of Clinical Sciences, Ophthalmology, Skåne University Hospital, Lund University, Lund, Sweden
| | - Jens Nääv Ottosson
- Department of Clinical Sciences, Ophthalmology, Skåne University Hospital, Lund University, Lund, Sweden
| | - John Albinsson
- Department of Clinical Sciences, Ophthalmology, Skåne University Hospital, Lund University, Lund, Sweden
| | - Rafi Sheikh
- Department of Clinical Sciences, Ophthalmology, Skåne University Hospital, Lund University, Lund, Sweden
| | - Aboma Merdasa
- Department of Clinical Sciences, Ophthalmology, Skåne University Hospital, Lund University, Lund, Sweden
| | - Kajsa Tenland
- Department of Clinical Sciences, Ophthalmology, Skåne University Hospital, Lund University, Lund, Sweden
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Sazgar AA, Sazgar MA, Sazgar AK. Outcome Evaluation of Reconstructive Septorhinoplasty in Patients with a History of Nasal Skin Necrosis. Facial Plast Surg Aesthet Med 2024. [PMID: 38350143 DOI: 10.1089/fpsam.2023.0240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2024] Open
Abstract
Background: Nasal skin necrosis represents a severe rhinoplasty complication, potentially leading to nasal deformity and psychological distress. Objectives: To assess the safety, nasal function enhancement, and esthetic satisfaction in individuals with a history of nasal skin necrosis following reconstructive septorhinoplasty using patient-reported outcome measures. Methods: The case series included patients who underwent reconstructive septorhinoplasty 1 year after experiencing skin necrosis. Skeletal reconstruction was performed with an open approach using various autografts and techniques. The data collected encompassed demographics, medical history, operative reports, and postoperative events. The Standardized Cosmesis and Health Nasal Outcomes Survey (SCHNOS) was administered preoperatively and 1 year postoperatively. Results: Most patients were female (35/38, 92%), with median age of 33.5 years (17-57) and 2 prior rhinoplasties (1-5) by 1 surgeon (1-2). The follow-up median was 23.78 months (11.83-54.23). Necrosis predominantly affected the nasal tip and soft tissue triangles. Septorhinoplasty utilized 11 V-shaped columellar base and 27 mid-columella incisions, lasting on average 274 min (175-405). Septal grafts were adequate for reconstruction in only three cases. Autografts for reconstruction encompassed auricular cartilage (31), rib cartilage (22), temporal fascia (14), and rectus fascia (6). SCHNOS scores improved significantly, with the obstruction domain decreasing from a preoperative mean of 75.92 (±22.83) to 34.08 (±27.87) and the cosmesis domain from 85.43 (±19.06) to 39.73 (±23.77). No postoperative severe vascular complication occurred. More previous surgeries linked to decreased patient satisfaction. Conclusion: Reconstructive septorhinoplasty can be successful in restoring relatively normal nasal contour following prior soft tissue necrosis, with limited risk for complications.
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Affiliation(s)
- Amir A Sazgar
- Otorhinolaryngology Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehr A Sazgar
- School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Amir K Sazgar
- Otorhinolaryngology Research Center, Tehran University of Medical Sciences, Tehran, Iran
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Gopal JP, Vaz O, Varley R, Spiers H, Goldsworthy MA, Siddagangaiah V, Lock B, Sharma V, Summers A, Moinuddin Z, van Dellen D, Augustine T. Using Laser Speckle Contrast Imaging to Quantify Perfusion Quality in Kidney and Pancreas Grafts on Vascular Reperfusion: A Proof-of-Principle Study. Transplant Direct 2023; 9:e1472. [PMID: 37090123 PMCID: PMC10118345 DOI: 10.1097/txd.0000000000001472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/31/2023] [Accepted: 02/02/2023] [Indexed: 04/25/2023] Open
Abstract
The accuracy of intraoperative graft perfusion assessment still remains subjective, with doppler examination being the only objective adjunct. Laser speckle contrast imaging (LSCI) has been used to assess intraoperative blood flow in neurosurgery and in various surgical specialties. Despite its ability to accurately quantify perfusion at the microvascular level, it has not been clinically evaluated in kidney/kidney-pancreas transplantation for perfusion characterization. We aimed to evaluate the utility of LSCI and identify objective parameters that can be quantified at reperfusion. Methods This study was registered in ClinicalTrials.gov (NCT04202237). The Moor FLPI-2 blood flow imager was used in 4 patients (1 Simultaneous Pancreas and Kidney, 2 deceased, and 1 living donor kidney transplants) during reperfusion to capture reperfusion data. The following parameters were measured: flux (average speed × concentration of moving red blood cells in the sample volume), doppler centroid, total and valid pixels, valid rate, and total and valid area. Flux data were analyzed with Moor FLPI analysis software. Results The perfusion characteristics and flux images correlated with initial graft function. Conclusions LSCI is a safe, noncontact imaging modality that provides real-time, accurate, high-resolution, full field blood flow images and a wide range of flux data to objectively quantify organ reperfusion intraoperatively in kidney/kidney-pancreas transplantation. This modality could be used to develop a robust numerical quantification system for the evaluation and reporting of intraoperative organ perfusion, and aid intraoperative decision-making. Perfusion data could be combined with biomarkers and immunological parameters to more accurately predict graft outcomes.
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Affiliation(s)
- Jeevan Prakash Gopal
- Department of Renal and Pancreas Transplantation, Manchester University Hospitals NHS Foundation Trust, Manchester Royal Infirmary, Manchester, United Kingdom
- Department of General Surgery, The Queen Elizabeth Hospital King’s Lynn NHS Trust, King’s Lynn, United Kingdom
| | - Osborne Vaz
- Department of Renal and Pancreas Transplantation, Manchester University Hospitals NHS Foundation Trust, Manchester Royal Infirmary, Manchester, United Kingdom
- Lancashire Teaching Hospitals NHS Foundation Trust, Preston, United Kingdom
| | - Rebecca Varley
- Department of Renal and Pancreas Transplantation, Manchester University Hospitals NHS Foundation Trust, Manchester Royal Infirmary, Manchester, United Kingdom
| | - Harry Spiers
- Department of Transplantation, Addenbrooke’s Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
- Department of Surgery, University of Cambridge, Cambridge, United Kingdom
| | - Matthew A. Goldsworthy
- Department of Renal and Pancreas Transplantation, Manchester University Hospitals NHS Foundation Trust, Manchester Royal Infirmary, Manchester, United Kingdom
| | - Vishwanath Siddagangaiah
- Department of Renal and Pancreas Transplantation, Manchester University Hospitals NHS Foundation Trust, Manchester Royal Infirmary, Manchester, United Kingdom
| | - Brian Lock
- Moor Instruments Ltd, Axminster, United Kingdom
| | - Videha Sharma
- Department of Renal and Pancreas Transplantation, Manchester University Hospitals NHS Foundation Trust, Manchester Royal Infirmary, Manchester, United Kingdom
- Lancashire Teaching Hospitals NHS Foundation Trust, Preston, United Kingdom
| | - Angela Summers
- Department of Renal and Pancreas Transplantation, Manchester University Hospitals NHS Foundation Trust, Manchester Royal Infirmary, Manchester, United Kingdom
- University of Manchester-Faculty of Biology, Medicine and Health, Division of Diabetes, Endocrinology and Gastroenterology, Manchester, United Kingdom
| | - Zia Moinuddin
- Department of Renal and Pancreas Transplantation, Manchester University Hospitals NHS Foundation Trust, Manchester Royal Infirmary, Manchester, United Kingdom
- Lancashire Teaching Hospitals NHS Foundation Trust, Preston, United Kingdom
| | - David van Dellen
- Department of Renal and Pancreas Transplantation, Manchester University Hospitals NHS Foundation Trust, Manchester Royal Infirmary, Manchester, United Kingdom
- Lancashire Teaching Hospitals NHS Foundation Trust, Preston, United Kingdom
| | - Titus Augustine
- Department of Renal and Pancreas Transplantation, Manchester University Hospitals NHS Foundation Trust, Manchester Royal Infirmary, Manchester, United Kingdom
- University of Manchester-Faculty of Biology, Medicine and Health, Division of Diabetes, Endocrinology and Gastroenterology, Manchester, United Kingdom
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Turchin I, Beschastnov V, Peretyagin P, Perekatova V, Kostyuk A, Orlova A, Koloshein N, Khilov A, Sergeeva E, Kirillin M, Ryabkov M. Multimodal Optical Monitoring of Auto- and Allografts of Skin on a Burn Wound. Biomedicines 2023; 11. [PMID: 36830888 DOI: 10.3390/biomedicines11020351] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/21/2023] [Accepted: 01/22/2023] [Indexed: 01/28/2023] Open
Abstract
The aim of the study was to investigate the dynamics of the state of allo- and autografts of skin on a wound using optical modalities: diffuse reflectance spectroscopy (DRS), optical coherence tomography (OCT), and laser Doppler flowmetry (LDF). A deep thermal burn was simulated in 24 rats covering 20% of the body surface. On day 3 after the injury, a fascial necrectomy of two 500 mm2 areas on the left and right sides of the midline of the animal body were excised. Allografts and autografts were placed in the centers of these areas. Optical measurements of grafts were performed on the 0, 3rd, 6th, 10th, and 13th days after transplantation. The allografts demonstrated a pronounced decrease in oxygenation, blood content, and perfusion compared to autografts on the 6th day; in the following days of observation, these values returned to the average values of autografts. Water content gradually decreased from the beginning to the end of observation. In conclusion, optical diagnostics revealed changes in the morphological microstructure, the rate of restoration of blood circulation, and oxygen exchange in the early stages, specific for the allo- and autograft.
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Abstract
PURPOSE Knowledge of how blood perfusion is affected during and after reconstructive surgery is of great importance to predict the survival of grafts and flaps. When commonly used reconstructive procedures were developed a century ago, they were based on empirical observations of clinical outcome. METHODS This is a comprehensive literature review that summarizes the current state of knowledge regarding microvascular perfusion monitoring during oculoplastic procedures. RESULTS Over the years, a number of techniques for perfusion monitoring have been developed as an attempt to be more objective than clinical examination using traditional methods such as observations of skin temperature, turgor, color, smell, and capillary refill time. There are limited publications regarding microvascular perfusion monitoring during reconstructive procedures in the periocular area. Modern laser-based techniques have been attractive due to their noninvasive nature. CONCLUSIONS Today, modern, noninvasive techniques are available to monitor perfusion during and after surgery. This has increased our knowledge on the perfusion in common oculoplastic surgery procedures. A detailed understanding of how blood perfusion is affected will hopefully allow the improvement of surgical techniques for better clinical outcome.
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Affiliation(s)
- Johanna V Berggren
- Department of Clinical Sciences Lund, Skåne University Hospital, Lund University, Ophthalmology, Lund, Sweden
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Engqvist L, Sheikh R, Dahlstrand U. Laser speckle contrast imaging enables perfusion monitoring of the anterior segment during eye muscle surgery. J AAPOS 2022; 26:155-158. [PMID: 35472595 DOI: 10.1016/j.jaapos.2022.02.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 02/04/2022] [Accepted: 02/15/2022] [Indexed: 11/15/2022]
Abstract
We demonstrate that laser speckle contrast imaging can be used to monitor blood perfusion noninvasively during the detachment of ocular muscles, which may be a valuable tool for reducing the risk of anterior segment ischemia as a complication of strabismus surgery.
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Affiliation(s)
- Linn Engqvist
- Lund University, Skåne University Hospital, Department of Clinical Sciences Lund, Ophthalmology, Lund, Sweden
| | - Rafi Sheikh
- Lund University, Skåne University Hospital, Department of Clinical Sciences Lund, Ophthalmology, Lund, Sweden
| | - Ulf Dahlstrand
- Lund University, Skåne University Hospital, Department of Clinical Sciences Lund, Ophthalmology, Lund, Sweden.
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Berggren JV, Tenland K, Sheikh R, Hult J, Engelsberg K, Lindstedt S, Malmsjö M. Laser Speckle Contrast Imaging of the Blood Perfusion in Glabellar Flaps Used to Repair Medial Canthal Defects. Ophthalmic Plast Reconstr Surg 2022; 38:274-279. [PMID: 34750313 PMCID: PMC9093732 DOI: 10.1097/iop.0000000000002082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/09/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND The glabellar flap is a common technique for surgical repair after tumor excision in the medial canthal area. However, the outcome may be affected by partial flap necrosis. Little is known about the impact of surgery on blood perfusion and the postoperative course of reperfusion due to the absence of reliable and noninvasive perfusion monitoring techniques. The aim of this study was to use a modern imaging technique to assess blood perfusion in glabellar flaps. METHODS Glabellar flaps were used to repair medial canthal defects following tumor excision in 7 patients. Blood perfusion was monitored using laser speckle contrast imaging: during surgery, immediately postoperatively (0 weeks), and at follow-up, 1, 3, and 6 weeks after surgery. RESULTS Perfusion decreased gradually along the length of the flap, and reached a minimum 15 mm from the flap base. Perfusion in the proximal 20 mm of the flap was completely restored after 1 week, while the distal part of the flap was gradually reperfused over 6 weeks. Both the functional and esthetic surgical outcomes were excellent. CONCLUSIONS The rapid reperfusion of the glabellar flap may be explained by its connection to the vascular network via the flap pedicle. In flaps longer than 20 mm, the distal part can be considered a free skin transplant, and a combination of a glabellar flap and a free skin graft could then be considered.
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Affiliation(s)
- Johanna V. Berggren
- Lund University, Skåne University Hospital, Department of Clinical Sciences Lund, Ophthalmology
| | - Kajsa Tenland
- Lund University, Skåne University Hospital, Department of Clinical Sciences Lund, Ophthalmology
| | - Rafi Sheikh
- Lund University, Skåne University Hospital, Department of Clinical Sciences Lund, Ophthalmology
| | - Jenny Hult
- Lund University, Skåne University Hospital, Department of Clinical Sciences Lund, Ophthalmology
| | | | - Sandra Lindstedt
- Lund University, Skåne University Hospital, Department of Clinical Sciences Lund, Ophthalmology
| | - Malin Malmsjö
- Lund University, Skåne University Hospital, Department of Clinical Sciences Lund, Ophthalmology
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