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Comparison of flap and contralateral donor site tissue perfusion for flap monitoring in microvascular head and neck reconstruction - a retrospective study.
[INTRODUCTION] Postoperative flap monitoring in microvascular head and neck reconstruction based solely on flap tissue perfusion measurements relative to predefined thresholds may be influenced by systemic tissue perfusion alterations. This…
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Can supermicrosurgery treat Alzheimer's disease? - Current evidence and hope.
Alzheimer’s disease is characterized by a loss of temporal and spatial orientation and a progressive loss of cognitive and locomotor function. Therapeutic drug options are currently limited. There is evidence that degradation products of Al…
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Microvascular reconstruction in oral and maxillofacial surgery: a Europe-wide data collection.
[PURPOSE] This study aims to analyze microvascular reconstruction in Oral and Maxillofacial Surgery (OMFS) in Europe. [METHODS] Based on previous studies, a dynamic online questionnaire was developed and subjected to internal and external …
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Confounding effects of blood hemoglobin and hematocrit levels on flap perfusion measurement with the Oxygen-to-see (O2C) analysis system in microvascular head and neck reconstruction- a retrospective study.
[BACKGROUND] The Oxygen-2-see (O2C) analysis system can measure flap perfusion, which is a prerequisite for flap viability, and it is therefore commonly used in flap monitoring for microvascular head and neck reconstruction. However, in the…
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Continuous Measurement of Radial Free Forearm Flap Tissue Perfusion for Flap Monitoring After Microvascular Head and Neck Reconstruction-Systemic Blood Pressure as a Potential Confounder in the Early Postoperative Period.
Continuous measurement of flap tissue perfusion in the context of postoperative flap monitoring after microvascular head and neck reconstruction may be confounded by alterations in systemic blood pressure, particularly when using predefined…
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Blood pressure and microvascular free flap perfusion in head and neck reconstruction- a retrospective analysis.
[PURPOSE] The influence of blood pressure on microvascular free flap perfusion is not fully understood and remains an ongoing topic of debate, as flap perfusion is both a prerequisite for flap viability and a parameter frequently used for p…
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Full-thickness skin graft versus split-thickness skin graft for fasciocutaneous radial forearm free flap donor site closure: a systematic review and meta-analysis.
[BACKGROUND] The radial forearm free flap (RFFF) is widely used in microvascular reconstructions. However, donor site morbidity remains a concern, with complications such as wound healing issues, functional impairments, and aesthetic concer…
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Impact of Vasopressors on Microvascular Free Flap Perfusion in Head and Neck Reconstruction.
[INTRODUCTION] The use of vasopressors in microvascular head and neck reconstruction is still controversial in view of its potentially negative influence on microvascular flap perfusion, which is crucial for flap viability and commonly used…
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Flap size as a confounding variable in flap perfusion measurement with the Oxygen-to-see (O2C) analysis system in microvascular head and neck reconstruction - a retrospective analysis.
[OBJECTIVES] The Oxygen-to-see (O2C) analysis system is used for flap monitoring based on predefined threshold values for flap perfusion. However, flap size may be a confounding variable. The aim of this study was to investigate the relatio…
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[A consensus statement of the German Speaking Society for Reconstructive Microsurgery (GSRM): role and potential of robotic microsurgery].
As part of a consensus workshop, the following key questions regarding the future of robotic microsurgery were discussed: • What functional and ergonomic requirements should future robotic microsurgery systems meet with respect to their har…
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Free Flap Perfusion in Microvascular Head and Neck Reconstruction: Influence of the Number of Ischemia Intervals and Ischemia Duration-A Retrospective Study.
[BACKGROUND] In microvascular head and neck reconstruction, ischemia of the free flap tissue is inevitable during microsurgical anastomosis and may affect microvascular free flap perfusion, which is a prerequisite for flap viability and a p…
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Full-thickness skin graft versus split-thickness skin graft for radial forearm free flap donor site closure: protocol for a systematic review and meta-analysis.
[BACKGROUND] The radial forearm free flap (RFFF) serves as a workhorse for a variety of reconstructions. Although there are a variety of surgical techniques for donor site closure after RFFF raising, the most common techniques are closure u…
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Tensile strength of adhesives in peripheral nerve anastomoses: an in vitro biomechanical evaluation of four different neurorrhaphies.
[BACKGROUND] The fundamental prerequisite for prognostically favorable postoperative results of peripheral nerve repair is stable neurorrhaphy without interruption and gap formation. [METHODS] This study evaluates 60 neurorrhaphies on femo…
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Does the Anastomosis Recipient Vessel Have an Influence on Free Flap Perfusion in Microvascular Head and Neck Reconstruction-A Retrospective Analysis of 338 Cases with Comparison of Flap Perfusion between Different Arterial and Venous Recipient Vessels in Radial Free Forearm Flaps, Anterolateral Thigh Flaps, and Fibula Free Flaps.
Flap perfusion is a prerequisite for microvascular free flap survival and a parameter routinely used for flap monitoring. The aim of this study was to investigate the influence of the anastomosis recipient vessel on flap perfusion. Flap pe…
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Impact of age on microvascular free flap perfusion in head and neck reconstruction.
[OBJECTIVE] Aging is associated with structural and functional cardiovascular changes that may affect microvascular free flap perfusion, which is a prerequisite for flap viability and flap success. This study is aimed to investigate the imp…
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Perfusion of microvascular free flaps in head and neck reconstruction after prior neck dissection and irradiation.
Microvascular free flaps are frequently used for head and neck reconstruction after prior neck dissection (ND) and neck irradiation (RTX). The aim of this study was to investigate the influence of ND and RTX on flap perfusion as a critical …
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Impacts of vascular comorbidities on free flap perfusion in microvascular head and neck reconstruction.
[PURPOSE] Arterial hypertension (AHTN), type 2 diabetes mellitus (DM), and atherosclerotic vascular disease (ASVD) are common vascular comorbidities in patients undergoing reconstruction of the head and neck region with a microvascular free…
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Flap perfusion monitoring with an attached surface probe in microvascular reconstruction of the oral cavity.
[OBJECTIVES] Postoperative flap monitoring is essential in oral microvascular reconstruction for timely detection of vascular compromise. This study investigated the use of attached surface probes for the oxygen-2-see (O2C) analysis system …
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First Series of Free Flap Reconstruction Using a Dedicated Robotic System in a Multidisciplinary Microsurgical Center.
Robotic microsurgery is a novel technology for microsurgical free flap transplantation in reconstructive surgery. Recently, the first free flap transplantation using a dedicated robotic system for microsurgery (Symani Surgical System; Medic…
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Influence of perioperative blood pressure regulation on postoperative delirium in patients undergoing head and neck free flap reconstruction.
[BACKGROUND] Postoperative delirium (POD) is a serious complication in patients undergoing microvascular head and neck reconstruction. Whether intraoperative and postoperative blood pressure regulation are risk factors for POD remains uncle…
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Attached compared with unattached surface probes for monitoring flap perfusion in microvascular head and neck reconstruction: a feasibility study.
Unattached surface probes are commonly used with the O2C analysis system (LEA Medizintechnik, Germany) to monitor microvascular free flap perfusion. This study compared attached and unattached surface probes for extraoral free flaps. The st…
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Evaluation of fibrin, cyanoacrylate, and polyurethane-based tissue adhesives in sutureless vascular anastomosis: a comparative mechanical ex vivo study.
The stability of a microvascular anastomosis is an important prerequisite for successful tissue transfer. Advances in tissue adhesives are potentially opening new avenues for their use in sutureless microsurgical anastomosis, however they h…
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Identification of risk factors for postoperative delirium in patients following intraoral reconstruction with microvascular free flaps: a matched-pair analysis.
Postoperative delirium (POD) following microvascular head and neck reconstruction negatively impacts patient outcomes, and only a few risk factors have been identified. The aim of this study was to identify additional risk factors for POD a…
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Biodegradation and Immunological Parameters of Polyurethane-Based Tissue Adhesive in Arterial Microvascular Anastomoses-A Long-Term In Vivo Study.
In microsurgical anastomosis, non-synthetic fibrin-based adhesives have predominantly shown superior properties to synthetic cyanoacrylates, but they have hardly any clinical application. This study aims to investigate the local and systemi…
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Smoking and microvascular free flap perfusion in head and neck reconstruction: radial free forearm flaps and anterolateral thigh flaps.
Head and neck reconstruction with microvascular free flaps is frequently performed in smokers. Smoking causes various alterations in the cardiovascular system. The aim of this study was to investigate the effects of smoking on flap perfusio…
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Quality of life in patients with oral hard or soft tissue defects after reconstructive microsurgery.
With current advances in medicine, many surgical methods have emerged for the reconstruction of soft and hard tissue defects of the head and neck. Current literature provides only a limited amount of evidence in studies addressing differenc…
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Microvascular anastomosis techniques using the medical adhesive VIVO and expandable micro-stents in a rat carotid artery model.
[BACKGROUND] Sutured anastomosis remains the gold standard in microvascular surgery. The procedure is not free of complications and is a time-consuming operation requiring a high level of experience. The aim of this study was to develop new…
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Ankle Brachial Index Predicts for Difficulties in Performing Microvascular Anastomosis.
[PURPOSE] In reconstructive microsurgery, severe arteriosclerosis is a known predictor for free flap failure because of problems with the vascular anastomosis. We investigated whether the ankle brachial index (ABI) could be a suitable preop…
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Evaluation of a novel osteosynthesis plate system for mandibular defects.
Continuity defects of the jaw can be reconstructed with titanium plates or microvascular bone flaps; osteosynthesis plates are necessary for both. In this study we performed a retrospective review of patients treated with Medartis MODUS® Ma…
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Evaluation of ultrasonic and conventional surgical techniques for genioplasty combined with two different osteosynthesis plates: a cadaveric study.
[OBJECTIVES] The aim of this study was to compare genioplasties performed using traditional saw or piezosurgery combined with different osteosynthesis plates. [MATERIALS AND METHODS] Thirty-two genioplasties were first performed on fresh h…