Search Results (45)

Background/objectives: Major head and neck oncologic surgeries requiring microvascular reconstruction frequently result in complications such as perioperative blood transfusion (PBT). Not only are blood products overutilized and associated with risks, but preoperative anemia is both a modifiable and predisposing factor for PBT. Our objective was to assess risk factors for PBT and determine a high-risk preoperative hemoglobin to inform transfusion stewardship practices. Methods: Patients that underwent head and neck cancer free flap reconstruction (n = 363) between 2012 and 2019 were included. Univariable and multivariable analyses evaluated predictors of PBT. Results: Overall, 11% of patients were anemic and 19% were transfused. Mean preoperative hemoglobin was significantly lower in the PBT group (128 g/L vs. 145 g/L, p < 0.0001). In our multivariable model, lower preoperative hemoglobin (odds ratio [OR] = 0.94), higher T stage (OR = 2.65), and lower body mass index (BMI) (OR = 0.89) increased the odds of PBT. Adjusting for staging and BMI, the OR of PBT was increased below 120 g/L hemoglobin. Higher mean units of PBT were administered for hemoglobin below 150 g/L with a large inflection below 120 g/L (p < 0.0001). Conclusions: Low preoperative hemoglobin is the strongest predictor of PBT in major head and neck cancer surgery. Recognizing and managing anemia is essential in surgical planning. Full article

Background and Objectives: Penile tissue loss, which can be an acquired condition due to trauma or infection, but is also seen in congenital anomalies, is a rare condition in children. A standard surgical approach is often not possible due to the different degrees and etiologies of penile tissue loss. The continuing growth and the presence of various congenital anomalies in children require a different penile reconstruction approach than in adults. We aimed to share our experience and surgical results with children in whom we performed penile reconstruction with different techniques due to penile tissue loss. Materials and Methods: Ten cases that underwent penile reconstruction between 2018 and 2023 were evaluated retrospectively. Age at initial operation, associated anomalies, surgical technique, and other related surgical attempts, as well as functional and cosmetic results, were recorded. Results: Ten boys aged between 6 months and 17 years underwent phalloplasty due to penile tissue absence. In six cases, penile tissue loss was due to acquired causes, and in four cases, congenital anomalies were the reason. The most common cause of penile tissue loss was circumcision complications. In four cases, penile reconstruction was achieved by mobilization of the remaining corpus cavernosum tissues, in two cases, the cavernous tissue was adequate and repaired with glansplasty and penile skin graft. Phalloplasty was performed by tubularization of a skin and subcutaneous fat flap, removed from the pubic region and scrotal region, in two cases. A microvascular radial forearm flap was performed in a 17-year-old patient with penile tissue loss because of trauma, and a free skin flap taken from the forearm was used for penile reconstruction. Thirty percent of patients required a second surgery. Urinary continence was present in eight of the cases. Although four cases were classified as cosmetically unsatisfactory in our evaluation, all patients and their families reported being satisfied with the cosmetic results. Conclusions: Penile reconstruction for penile tissue loss in children should be performed in clinics where different scenarios can be applied. With maximum preservation and mobilization of existing cavernous tissues, temporary penile reconstruction with local flaps should be performed in young children at an early stage to minimize the psychological effects of penile absence. Although an esthetically perfect result cannot be guaranteed, patients and families are generally satisfied with the outcome. Full article

Background: Steal syndrome in the setting of microvascular reconstruction refers to a phenomenon whereby blood flow is diverted from the native tissue to the free flap, leading to ischemia and potential limb loss. In the present study, we aim to comprehensively evaluate the occurrence and management of steal syndrome in free flap reconstruction of the lower extremities. Methods: A thorough literature search was conducted across the MEDLINE, Embase, Cochrane Library, and Scopus databases up to 29 January 2025. Studies were selected based on predefined inclusion criteria focusing on free flap microvascular reconstruction in the lower extremities with a focus on steal syndrome. Two independent reviewers assessed and extracted data. Results: Three studies were included, involving seven patients, with a mean age of 65.66 ± 5.89 years, who developed steal syndrome following free flap microvascular reconstruction. The most common revision involved below-the-knee amputation (BKA) due to ischemic complications. Comorbidities such as peripheral vascular disease (PVD), diabetes, and hypertension were present in all cases. The majority of anastomoses (85.7%) were end-to-side (ETS), with only one case utilizing a flow-through configuration. The majority of cases (n = 5, 71.4%) were reconstructed using latissimus dorsi (LD) flaps, with the remaining two cases using rectus abdominis (n = 1) and gracilis (n = 1) flaps. The recipient vessel was the anterior tibial artery in two patients (28.6%), the dorsalis pedis artery in two patients (28.6%), and the popliteal artery in three patients (42.9%). The most common salvage procedure was below-the-knee amputation (BKA), performed in four patients (57.1%). One patient required revision of the venous anastomosis and flap debridement, followed by a Chopart amputation (n = 1, 14.3%). Conclusions: The occurrence of steal syndrome in free flap microvascular reconstruction of the lower extremities is rare but can lead to significant complications, including amputation. The findings indicate that steal syndrome is more likely in patients with pre-existing vascular conditions such as PVD and diabetes. While surgical technique and flap type may influence its development, further studies are needed to identify specific anatomical and clinical predictors. The absence of a unified treatment guideline underscores the need for further investigation into effective management strategies to prevent amputation and optimize patient outcomes. Full article

Introduction: The indication for a free flap in acute burn reconstruction is very specific. It should avoid several complications that are more common in the burned patient population. We propose an anterolateral thigh (ALT) flap as a first option for primary burn reconstruction in microvascular free flap reconstruction in burned patients. Patients and Methods: A retrospective review of all acutely burned patients treated with microvascular ALT free flap reconstruction between the years 2005 and 2022 in the Vall d’Hebron Barcelona Hospital Campus Burn Centre was conducted. Results: We performed 30 ALT flaps for primary burn reconstruction. The majority of patients were male (87.5%), with a mean age of 36.7 years, and 37% of patients were smokers. High-voltage electrical burns were the most common etiology. The mean time between burn injury and microsurgery was 22 days. The main recipient site was the lower limb. The flap survival rate was 96.6%. One patient required a meshed skin graft to cover a defect in the proximal third due to peripheral flap necrosis. One flap experienced mild congestion, which resolved spontaneously. Another flap had a local infection, which resolved with antibiotic therapy and surgical debridement. Conclusions: An ALT flap offers several advantages to a burned patient, provided that the surgical technique and postoperative management described in this study are followed. We propose it as the first option for primary burn reconstruction using free flaps in a burned patient. Full article

Background and Objectives: Microvascular flap surgery is a widely used reconstructive technique for the repair of various defects. Biomarkers have become an essential tool for monitoring flap viability, early detection of complications, and prediction of surgical outcomes. Studies focusing on immunomodulatory cytokines in the early prediction of microvascular flap complications are lacking. We aimed to investigate the predictive value of postoperative changes in transforming growth factor beta-1 (TGF-β1) for microvascular flap complications. Materials and Methods: This prospective observational study comprised 44 adults scheduled for elective microvascular flap surgery. Preoperative blood samples for analysis were obtained before surgery, prior to the administration of intravenous fluids. Postoperative blood draws were collected after surgery, before leaving the operating room. Preoperative and postoperative serum concentrations of TGF-β1, as well as preoperative plasma albumin, total protein, total cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, full blood count, albumin, interleukin-6, C-reactive protein, and fibrinogen, were determined. Results: Postoperative changes in TGF-β1 were higher in cases with flap loss compared to patients with healthy recovery or patients with minor flap complications (0.403 log10 of ng/mL [0.024–0.782] vs. 0.157 [0.029–0.285] vs. −0.089 [−0.233–0.056], p = 0.002). Increased postoperative TGF-β1 was positively linked to preoperative C-reactive protein (p = 0.021), fibrinogen (p = 0.020), hematocrit (p = 0.039), and hemoglobin (p = 0.009). Conclusions: The postoperative increase in circulating TGF-β1 was associated with microvascular flap complications. Assessment of the postoperative changes in circulating TGF-β1 may be valuable for the early postoperative prediction of true flap loss. Full article

Introduction: Microvascular free flap surgery is a treatment method for patients with head and neck cancer requiring reconstruction surgery. Patients undergoing this complex, long-lasting surgery are prone to prolonged episodes of intraoperative hypotension, which is associated with increased incidence of postoperative mortality, morbidity, and free flap failure. A new technology recently approved, named the Hypotension Prediction Index (HPI), allows precise hemodynamic monitoring of patients under general anesthesia, with a significant reduction of intraoperative hypotension events. This study aims to assess the impact of the Hypotension Prediction Index (HPI) on the incidence and severity of intraoperative hypotension in patients undergoing free flap surgery. Methods and analysis: Eligible patients will be randomly assigned to one of two groups: Group A, receiving invasive blood pressure monitoring with standard medical therapy, or Group B, undergoing hemodynamic monitoring using the Hypotension Prediction Index (HPI) software. The primary outcome is the time-weighted average (TWA) of mean arterial pressure (MAP) < 65 mmHg. Secondary outcomes include free flap viability and perioperative complications. Ethics and dissemination: Ethics approval was obtained from the Poznan University of Medical Sciences Ethics Committee (KB-560/22; date 1 July 2022). Results will be submitted for publication in a peer-reviewed journal. Trial registration number: NCT 05738603. Full article

Background: While radiotherapy (RT) and chemotherapy (CT) significantly improve breast cancer outcomes, they may affect breast reconstruction by causing vascular damage and delayed wound healing. This retrospective study evaluates how preoperative RT, CT, or the combination of both impacts intraoperative and postoperative outcomes in immediate or delayed deep inferior epigastric perforator (DIEP) flap breast reconstructions. Methods: We conducted a single-center review of all patients undergoing autologous DIEP flap reconstruction after mastectomy between 2018 and 2024. Patients were divided into four groups: RT only, CT only, a combination of RT and CT, and a control group with no preoperative therapies. Intraoperative and postoperative outcomes were then compared among these groups, with statistical significance defined as p < 0.05. Results: We included 114 patients representing 141 DIEP-flap breast reconstructions. Flap survival rate was 98.5%. In the univariate analysis, total microvascular recipient site complications were significantly higher in the RT + CT group (14.0%, p = 0.021). Donor-site complication rates differed significantly among the four groups (p = 0.025), with the highest rate observed in the RT + CT group (44.7%). In the logistic regression analysis, ischemia time was found as an independent risk factor for total recipient site complications, but not for microvascular complications (OR = 1.019, 95%-CI = 1.004–1.035, p = 0.014). Conclusions: Combined RT + CT significantly increased microsurgical complications. Ischemia time correlated with higher odds of total recipient site complications. Individualized patient management and diminished ischemia time are likely to improve flap survival. Full article

Background: Postoperative bed rest is considered essential after free flap reconstruction of the lower limb to ensure microsurgical success, but prolonged inactivity can lead to physical deconditioning and psychosocial challenges, even in otherwise healthy patients. While early mobilization protocols improve physical recovery, their impact on psychological wellbeing remains underexplored. This review evaluates the current literature on postoperative protocols in microvascular lower extremity reconstruction, focusing on both physical and mental health outcomes, and explores potential strategies for optimizing recovery. Methods: A systematic review was conducted following the PRISMA guidelines to search PubMed, Cochrane Library, and Embase databases. Studies were included if they explicitly described postoperative immobilization or mobilization protocols and their impact on recovery outcomes, including complications and psychological effects. Results: Sixteen studies met the inclusion criteria, highlighting the potential of early mobilization protocols in reducing complications such as pneumonia, deep vein thrombosis, and prolonged hospital stays. Structured mobilization strategies, such as early dangling and perfusion-controlled mobilization, demonstrated improved microcirculatory adaptation and enhanced recovery outcomes. However, limited to no research addressed psychological resilience and the impact of immobility on patient mental health. Conclusions: Early mobilization protocols significantly improve physical outcomes after free flap surgery, but the psychological and mental effects of postoperative bed rest remain insufficiently studied. Adapting strategies from space medicine, including structured routines, cognitive training, and social engagement, offers promising avenues for enhancing recovery. Future research should focus on integrating physical and psychological interventions into comprehensive, evidence-based recovery protocols to optimize patient outcomes. Full article

Background/Objectives: Defects in maxillary and mandibular continuity are common in maxillofacial practice. They can occur after trauma, osteonecrosis, congenital jaw deformities, or surgical resection of benign or malignant tumours. Reconstruction with microvascular bone flaps and subsequent prosthetic rehabilitation is considered the contemporary first line treatment. This study assessed the extent to which the underlying disease influences the treatment course of microvascular segmental jaw reconstruction. Methods: A retrospective review of prospectively collected data from all patients who underwent microvascular segmental jaw reconstruction from January 2011 to December 2020 was completed. The course of treatment as well as the process of dental rehabilitation was assessed. Results: Two hundred patients were included in the study. A total of 15.5% of patients were fitted with a conventional removable prosthesis, and implant-supported prosthetic restoration could be realized in 53.5% of patients. However, dental rehabilitation was not possible in 31.0% of patients. The outcomes of prosthetic restoration showed a statistically significant difference between the different underlying diseases (p < 0.0001). About 50% of patients with malignant diseases and osteonecrosis remained without dental rehabilitation. In contrast, more than 90% of patients with jaw continuity defects, due to benign diseases or malformations, were able to receive an implant-supported prosthesis. Among the diagnostic groups, there was a significant difference regarding the number of implants placed (p < 0.0001). There was a significant correlation between increased incidence of complications and the size of the bone flaps. Conclusions: The underlying disease influenced significantly the treatment course and the outcome of dental rehabilitation after microvascular jaw reconstruction. Full article

Background. Removal of the rib and adjacent cartilage is a common step for exposure of the recipient chest vessels in free-flap breast reconstructions. However, this adds both short- and long-term morbidity to the procedure. We describe our experience in avoiding rib removal in microvascular breast reconstruction. Patients and Methods. We retrospectively reviewed recipient vessel preparation in free-flap breast reconstructions performed by a single surgeon (SGB). Results. A total of 556 consecutive patients, totaling 1106 flaps over 5 years, were assessed. Recipient vessels included IMA in 1068 flaps and internal mammary perforator in 38 DIEP flaps. Nine patients underwent bilateral DIEP flap breast reconstruction with a cross-chest anastomosis, where the IMA was the recipient. Also, the IMA was used in 171 patients who underwent breast reconstruction with stacked flaps. No instances of complete rib resection were reported. However, in two cases of delayed DIEP flap reconstruction without a history of radiation, resection of 20% of the rib was required for safe vessel preparation. No intraoperative complications were observed, and three flaps from different patients were lost (one PAP and two DIEPs). Conclusions. Microsurgery in free-flap breast reconstructions has greatly evolved in the past two decades. Exposure of the IMA recipient vessels typically involves the removal of a portion of the intercostal cartilage and the rib, allowing comfortable and safe management of the vasculature during dissection and anastomosis. Nonetheless, excessive removal often leads to short-term increased pain and long-term cosmetic and functional complications, such as a noticeable depression of the chest wall especially noted in thin patients with small flaps. Our approach can be safely employed to preserve the anatomy and decrease pain, allowing for outpatient performance of these procedures. Full article

Background/Objectives: Robot-assisted microsurgery (RAMS) has been introduced into the field of plastic surgery in recent years. It potentially offers enhanced precision and control compared to traditional methods, which is crucial for complex microvascular tasks in free flap reconstructions. We aim to analyze our experiences with robotic-assisted microsurgery in the field of upper extremity free flap reconstruction. Methods: This prospective study evaluated the efficacy and safety of the Symani Surgical System for free flap reconstructions in 16 patients with upper extremity defects at our institution from February 2023 to March 2024. Operating times were compared to a matched, historical cohort. We collected data on surgical outcomes, operative times, and complication rates, following strict adherence to the Declaration of Helsinki. Results: Our cohort primarily involved male patients (81%) with defects mostly located on the hand (81%). The anterolateral thigh flap was the most commonly used free flap (14/16, 88%). The average operative time was 368 ± 89 min (range: 216–550 min). No complete or partial flap losses were observed, but one flap required revision surgery due to arterial thrombosis. Major complications occurred in 13% of the cases. The average anastomosis time was 31 ± 12 min (range: 20–35 min) for arterial end-to-end anastomoses and 33 ± 13 min (range: 20–60 min) for arterial end-to-side anastomoses. Venous anastomoses required, on average, 20 ± 6 min. Operating times were not significantly longer when compared to the historical cohort (p = 0.67). Conclusions: We were able to show comparable outcomes to conventional microsurgery, while requiring more time for the microsurgical anastomoses. The study highlights the need for larger, controlled trials to better understand the benefits and limitations of robotic assistance in microsurgical reconstruction of the upper extremity. Full article

Complex microvascular techniques and in-depth knowledge of blood rheology and microanastomosis function are required for success in microvascular flap surgery. Substantial progress has been achieved in preventing complications, but the rate of flap loss is still significant and can have significant adverse effects on the patient. Flap thrombosis, flap hematoma, and flap loss are the most frequent and severe major surgical complications. Advances in understanding the pathophysiology of different flap complications, the use of preoperative risk assessment and new treatment concepts could improve the perioperative care of microvascular flap surgery patients. Our aim was to outline novel avenues for best practice and provide an outlook for further research of anesthesia and perioperative care concepts in microvascular flap surgery. Full article

Study Design: Retrospective cohort study. Objective: A major risk factor for oral squamous cell carcinoma (OSCC) is advanced age. Ablative surgery combined with microvascular reconstruction has become routine for OSCC. Nevertheless, there is an interdisciplinary debate about the appropriateness of surgery combined with prolonged general anesthesia in the elderly. In the present study, the ablative and microvascular strategies in OSCC were evaluated in terms of oncologic safety and surgical morbidity in relation to age. Methods: A total of 345 patients with primary OSCC who underwent ablative tumor surgery and neck dissection according to the German national guideline for OSCC together with microvascular reconstruction from September 2010 to October 2017 were examined. General clinical data was analyzed descriptively with a special focus on perioperative morbidity of an elderly (≥70y) subgroup of 56 patients. Oncological outcome was estimated using Log Rank testing and Kaplan Meier plotting. Results: Estimated 5 year overall survival (OS) and disease-free survival (DFS) was 69.6% (≥70y) vs. 76.7% (<70y) and 62.9% (≥70y) vs. 78.2% (<70y) respectively with no significant difference between the 2 age groups. In multivariate cox regression, only initial stage of disease revealed significant impact on OS. Analysis of perioperative death/complications, flap loss, operation time, dependence on tracheostomy and hospitalization revealed no significant differences between the 2 groups. Conclusions: Tumor surgery including neck dissection in combination with primary microvascular reconstruction is a safe therapy in patients of advanced age. This results in excellent oncological outcome with no significant disadvantages in terms of perioperative morbidity, hospitalization or flap failure. Full article

Background: Microvascular flap surgery has become a routine option for defect correction. The role of von Willebrand factor antigen (VWF:Ag) in the pathophysiology of flap complications is not fully understood. We aim to investigate the predictive value of VWF:Ag for microvascular flap complications and explore the relationship between chronic inflammation and VWF:Ag. Methods: This prospective cohort study included 88 adult patients undergoing elective microvascular flap surgery. Preoperative blood draws were collected on the day of surgery before initiation of crystalloids. The plasma concentration of VWF:Ag as well as albumin, neutrophil-to-lymphocyte ratio (NLR), interleukin-6, and fibrinogen were determined. Results: The overall complication rate was 27.3%, and true flap loss occurred in 11.4%. VWF:Ag levels were higher in true flap loss when compared to patients without complications (217.94 IU/dL [137.27–298.45] vs. 114.14 [95.67–132.71], p = 0.001). Regression analysis revealed the association between VWF:Ag and true flap loss at the cutoff of 163.73 IU/dL (OR 70.22 [10.74–485.28], p = 0.043). Increased VWF:Ag concentrations were linked to increases in plasma fibrinogen (p < 0.001), C-reactive protein (p < 0.001), interleukin-6 (p = 0.032), and NLR (p = 0.019). Conclusions: Preoperative plasma VWF:Ag concentration is linked to biomarkers of inflammation and may be valuable in predicting complications in microvascular flap surgery. Full article

Background: Free muscle flaps can develop significant postoperative edema and wound exudation, thereby increasing interstitial pressure and potentially compromising microcirculation. While concerns exist regarding negative pressure wound therapy (NPWT) to compress free flaps and hinder monitoring, recent studies have indicated a reduction in edema and an increase in blood flow. Objective: To compare microcirculation in free latissimus dorsi muscle (LDM) flaps dressed with and without NPWT. Methods: This retrospective cohort study analyzed prospectively collected data of patients who received free LDM flap reconstruction. Patients were separated into two groups according to management with or without NPWT. Microcirculation was evaluated continuously for up to 72 h utilizing laser doppler flowmetry and tissue spectrometry. Results: In total, n = 61 patients (26 females, 35 males) with an average age of 56.90 (17.4) years were included. NPWT was applied in 12 patients, while a regular cotton dressing was used in 49 patients. Overall, no significant differences in the number of minor and major complications were observed between groups. Both groups showed an increase in microvascular flow over the investigated time period. The flow showed higher absolute values in the NPWT group, reaching statistical significance at 12 h post-anastomosis, p = 0.038. There was a tendency for lower rHb values in the NPWT group, without reaching statistical significance. Conclusions: The presented study confirms the increase in microvascular flow after NPWT application. Whilst ensuring continuous free flap monitoring utilizing laser doppler flowmetry and spectrometry, the data further support the safety of NPWT application without risking vascular compromise due to external compression. Full article