Distinguishing Authentic Voices in the Age of ChatGPT: Comparing AI-Generated and Applicant-Written Personal Statements for Plastic Surgery Residency Application.

BACKGROUND: ChatGPT, a generative artificial intelligence model, may be used by future applicants in the plastic surgery residency match. METHODS: Ten personal statements (5 generated by ChatGPT, 5 written by applicants) were rated by 10 reviewers, blinded to the source of the essay. RESULTS: A total of a 100 evaluations were collected. There was no significant difference in ratings for readability, originality, authenticity, and overall quality (all P > 0.05) when comparing computer-generated and applicant essays. CONCLUSION: Personal statements prepared by ChatGPT are indistinguishable from essays written by actual applicants. This finding suggests that the current plastic surgery application format be reevaluated to better aid in holistic evaluation of students.

Incidence of Venous Thromboembolism Based on Caprini Score in Deep Inferior Epigastric Perforator Flap Breast Reconstruction.

BACKGROUND: Deep inferior epigastric perforator (DIEP) flaps are commonly used for autologous breast reconstruction, but reported rates of venous thromboembolism (VTE) are up to 6.8%. This study aimed to determine the incidence of VTE based on preoperative Caprini score following DIEP breast reconstruction. METHODS: This retrospective study included patients who underwent DIEP flaps for breast reconstruction between January 1, 2016 and December 31, 2020 at a tertiary-level, academic institution. Demographics, operative characteristics, and VTE events were recorded. Receiver operating characteristic analysis was performed to determine the area under the curve (AUC) of the Caprini score for VTE. Univariate and multivariate analyses assessed risk factors associated with VTE. RESULTS: This study included 524 patients (mean age 51.2 ± 9.6 years). There were 123 (23.5%) patients with the Caprini score of 0 to 4, 366 (69.8%) with scores 5 to 6, 27 (5.2%) with scores 7 to 8, and 8 (1.5%) patients with scores >8. Postoperative VTE occurred in 11 (2.1%) patients, at a median time of 9 days (range 1-30) after surgery. VTE incidence by the Caprini score was 1.9% for scores 3 to 4, 0.8% for scores 5 to 6, 3.3% for scores 7 to 8, and 13% for scores >8. The Caprini score achieved an AUC of 0.70. A Caprini score >8 was significantly predictive of VTE on multivariable analysis relative to scores 5 to 6 (odds ratio = 43.41, 95% confidence interval = 7.46-252.76, p < 0.001). CONCLUSION: In patients undergoing DIEP breast reconstruction, VTE incidence was highest (13%) in Caprini scores greater than eight despite chemoprophylaxis. Future studies are needed to assess the role of extended chemoprophylaxis in patients with high Caprini scores.

Oncologic safety of axillary lymph node dissection with immediate lymphatic reconstruction.

PURPOSE: Immediate lymphatic reconstruction (ILR) at the time of axillary lymph node dissection (ALND) can reduce the incidence of lymphedema in patients with breast cancer. The oncologic safety of ILR is unknown and has not been reported. The purpose of this study was to evaluate if ILR is associated with increased breast cancer recurrence rates. METHODS: Patients with breast cancer who underwent ALND with ILR from September 2016 to December 2020 were identified from a prospective institutional database. Patient demographics, tumor characteristics, and operative details were recorded. Follow-up included the development of local recurrence as well as distant metastasis. Oncologic outcomes were analyzed. RESULTS: A total of 137 patients underwent ALND with ILR. At cancer presentation, 122 patients (89%) had clinically node positive primary breast cancer, 10 patients (7.3%) had recurrent breast cancer involving the axillary lymph nodes, 3 patients (2.2%) had recurrent breast cancer involving both the breast and axillary nodes, and 2 patients (1.5%) presented with axillary disease/occult breast cancer. For surgical management, 103 patients (75.2%) underwent a mastectomy, 22 patients (16%) underwent lumpectomy and 12 patients (8.8%) had axillary surgery only. The ALND procedure, yielded a median of 15 lymph nodes pathologically identified (range 3-41). At a median follow-up of 32.9 months (range 6-63 months), 17 patients (12.4%) developed a local (n = 1) or distant recurrence (n = 16), however, no axillary recurrences were identified. CONCLUSION: Immediate lymphatic reconstruction in patients with breast cancer undergoing ALND is not associated with short term axillary recurrence and appears oncologically safe.

Breast Implant-Related Outcomes After Cardiothoracic Surgeries and Electrophysiologic Procedures.

BACKGROUND: Outcomes related to preexisting breast implants after cardiothoracic procedures are poorly characterized. This study evaluated complications after minimally invasive cardiac surgery (MICS), median sternotomy (MS), and electrophysiologic procedures (EP) in patients with preexisting breast implants. METHODS: A retrospective review of patients with prior breast implants who underwent MICS, MS, or EP from 1994 to 2019 was performed. Demographic, treatment, and outcome characteristics were recorded. χ 2 Test and analysis of variance were used to perform statistical comparisons. RESULTS: In total, 78 patients (37 MICS, 21 MS, and 20 EP) were identified. Mean breast implant age was 13.3, 11.7, and 10.2 years, respectively ( P = 0.235). Intraoperative plastic surgeon involvement was present in 26 (70.3%) MICS cases, compared with 2 (9.5%) MS and 0% EP ( P < 0.001). Intraoperative rupture occurred in 5 (13.5%) MICS cases and no MS or EP cases ( P < 0.001). Postoperative implant complications occurred in 6 (16.2%) MICS, 8 (38.1%) MS, and 5 (25.0%) EP ( P = 0.350) cases, with median time to complication of 5.9, 5.4, and 38.9 months, respectively ( P = 0.596). Revision surgery was performed in 5 (13.5%) MICS, 7 (33.3%) MS, and 5 (25.0%) EP ( P = 0.246) cases. On multivariate analysis, lack of intraoperative plastic surgeon involvement ( P = 0.034) and breast implant age ( P = 0.001) were significant predictors of postoperative complications. CONCLUSIONS: Long-term complication rates are highest among patients with breast implants undergoing MS. Plastic surgeon involvement was significantly associated with fewer postoperative complications. Our results support a multidisciplinary approach to managing breast implants during cardiothoracic procedures.

Youngest Composite Full-Face Transplant: A Model for Vascularized Composite Allograft in Younger Populations.

BACKGROUND: The field of face transplantation continues to evolve, with more complex defects being addressed, and, at the same time, increased outcome expectations. Given our unique long-term experience in this field, we consented one of the youngest patients to undergo a full-face transplant. METHODS: An 18-year-old woman presented with complete destruction of her central face and craniofacial structures. She had coexisting major injuries, including pituitary gland, visual axis, and motor control. After extensive rehabilitation and reconstruction techniques, the patient underwent face transplant on May 4, 2017, at the age of 21 years. RESULTS: The total operative time for the recipient was 26 hours. There were no major perioperative complications. Since transplant, the patient has undergone 3 revision surgeries. She is near completely independent from a daily life activity standpoint. She has had 1 episode of rejection above grade II that was successfully treated with a short-term increased in immunosuppression. CONCLUSIONS: Contrary to data in solid organ transplantation where youth is associated with increased risk of rejection, our current algorithm in immunosuppression, combined with this patient's compliance, has led to only 1 rejection episode beyond grade II. This successful transplant can serve as a model for future vascularized composite transplants in younger populations.

Nipple-Sparing Mastectomy: Are We Providing Proper Prophylactic Antibiotic Coverage?

BACKGROUND: Infection after nipple-sparing mastectomy (NSM) and implant-based reconstruction (IBR) can be a devastating complication. The retained nipple may act as a portal or nidus for different ductal organisms, and as such, the bacteriology of surgical-site infections (SSIs) in this setting may not be adequately covered by current antibiotic recommendations. This study sought to evaluate SSI and reconstruction outcomes in relation to antibiotic choice and identify the different microbial species implicated. METHODS: A prospective database was reviewed for patients who underwent NSM with IBR from 2010 to 2019. Patient characteristics, operative details, antibiotic regimens, and subsequent treatment details were evaluated. The study analyzed SSI incidence, timing, and type of causative organisms. RESULTS: The study analyzed 571 NSMs with IBR performed for 347 patients (55% with direct implants and 45% with tissue expanders). The preoperative antibiotics consisted of cephalosporin alone for 65% of the patients, a more broad single-antibiotic use for 12% of the patients, and dual-coverage antibiotics for 20% of the patients. During a median follow-up of 1.7 years, SSI developed in 12% of the reconstructions, with 6% requiring prosthesis removal. The most common SSI organism cultured was Staphylococcal species. Neither pre- nor postoperative antibiotic choice was associated with incidence of infection, type of bacteria, or need for prosthetic explanation. CONCLUSION: For patients undergoing NSM with IBR, a more aggressive antibiotic choice is not associated with an improved SSI rate. Patient and treatment factors continue to carry the highest risk for SSI.

Lymphedema Prevention Surgery: Improved Operating Efficiency Over Time.

BACKGROUND: Lymphedema prevention surgery (LPS), which identifies, preserves, and restores lymphatic flow via lymphaticovenous bypasses (LVB), has demonstrated potential to decrease lymphedema in breast cancer patients requiring axillary lymph node dissection. Implementing this new operating technique requires additional operating room (OR) time and coordination. This study sought to evaluate the improvement of LPS technique and OR duration over time. METHODS: A prospective database of patients who underwent LPS at our institution from 2016 to 2019 was queried. Type of breast and reconstruction surgery, number of LVB performed, and OR times were collected. LPS details were compared by surgical group and year performed. RESULTS: Ninety-four patients underwent LPS, and 88 had complete OR time data available for analysis. Average age was 51 years, body mass index of 28, with an average of 15 lymph nodes removed. Reconstructive treatment groups included prosthetic reconstruction 56% (49), oncoplastic reduction 10% (9), and no reconstruction 34% (30). The number of patients undergoing LPS increased significantly from 2016 to 2019, and average number of LVB per patient doubled. In patients without reconstruction, the average time for LPS improved significantly from 212 to 87 min from 2016 to 2019 (p = 0.015) and similarly in patients undergoing LPS with prosthetic reconstruction from 238 to 160 min (p = 0.022). CONCLUSIONS: LVB is an emerging surgical lymphedema prevention technique. While requiring additional surgical time, our results show that with refinement of technique, over 4 years, we were able to perform double the number of LVB per patient in half the OR time.

Factors Influencing the Aesthetic Outcome and Quality of Life After Breast Reconstruction: A Cross-sectional Study.

BACKGROUND: The most important purpose of reconstruction is to increase or restore the patient's quality of life (QOL). The purpose of our study was to evaluate the QOL and aesthetic outcomes of patients after autologous versus implant-based breast reconstruction. METHODS: Patients who underwent breast reconstruction between 2009 and 2011 were included. The Breast-Q, a validated breast reconstruction QOL questionnaire, was used along with postoperative photographs panel analyses using a multiparameter breast-specific aesthetic outcome scale and retrospective evaluation of demographic and treatment data. RESULTS: Of 820 patients, 261 complete questionnaires were evaluated. On the multivariable linear regression, the "satisfaction with breasts" was positively influenced by autologous and bilateral reconstructions, whereas radiation therapy (RTx), the time between the reconstruction and the questionnaire, and the number of surgeries due to complications were negative factors (adjusted R = 0.183; P < 0.001). The same factors influenced the "satisfaction with the outcomes." The mean "overall breast appearance" was also positively influenced by autologous and bilateral reconstructions, and RTx and the total number of surgeries were negative predictive factors (adjusted R = 0.311, P < 0.001). CONCLUSIONS: The aesthetic result and QOL after breast reconstruction for breast cancer treatment are positively influenced by the use of autologous tissue and bilaterality. Factors that negatively influenced the aesthetic result and the QOL include use of RTx, a higher number of surgeries needed for the reconstruction, reoperations due to complications, higher body mass index, and a longer time elapsed between reconstruction and the questionnaire.

Axillary reverse mapping and lymphaticovenous bypass: Lymphedema prevention through enhanced lymphatic visualization and restoration of flow.

BACKGROUND: A lymphedema (LE) prevention surgery (LPS) paradigm for patients undergoing axillary lymphadenectomy (ALND) was developed to protect against LE through enhanced lymphatic visualization during axillary reverse mapping (ARM) and refinement in decision making during lymphaticovenous bypass (LVB). METHODS: A retrospective analysis of a prospective database was performed evaluating patients with breast cancer who underwent ALND, ARM, and LVB from September 2016 to December 2018. Patient and tumor characteristics, oncologic and reconstructive operative details, complications and LE development were analyzed. RESULTS: LPS was completed in 58 patients with a mean age of 51.7 years. An average of 14 lymph nodes (LN) were removed during ALND. An average of 2.1 blue lymphatic channels were visualized with an average of 1.4 LVBs performed per patient. End to end anastomosis was performed in 37 patients and a multiple lymphatic intussusception technique in 21. Patency was confirmed 96.5% of patients. Adjuvant radiation was administered to 89% of patients. Two patients developed LE with a median follow-up of 11.8 months. CONCLUSION: We report on our experience using a unique LPS technique. Refinements in ARM and a systematic approach to LVB allows for maximal preservation of lymphatic continuity, identification of transected lymphatics, and reestablishment of upper extremity lymphatic drainage pathways.

Face Transplantation for Granulomatosis With Polyangiitis (Wegener Granulomatosis): Technical Considerations, Immunological Aspects, and 3-Year Posttransplant Outcome.

BACKGROUND: We report new data for a rare face transplant performed 3 years ago. Granulomatosis with polyangiitis (GPA) (Wegener) is a severe autoimmune necrotizing vasculitis and parenchymal inflammatory disease that can affect any organ including those of the craniofacial region. Skin involvement manifests as malignant pyoderma. This account (1) highlights the technical details of face transplantation for this unique indication, (2) reports the 3-year posttransplant outcome, and (3) describes relevant immunological aspects. METHODS: A Le Fort III near-total face and near-total scalp transplant was performed after extensive trauma and subsequent bone and soft tissue infection in a patient with GPA. Incisions were planned along facial aesthetic subunits. The vascular pedicle comprised the facial and superficial temporal arteries bilaterally. The functioning left eye was preserved and fitted into the donor tissues. RESULTS: The procedure took 21 hours, and transfusion was limited to 4 units of packed red cells. Early medical and surgical complications were successfully treated. At 3 years, acceptable aesthetic outcome was achieved with adequate color match and scalp hair growth. The patient has recovered light touch, temperature, and 2-point discrimination and has evidence of symmetric cheek elevation albeit with limited eyelid and frontalis function. GPA relapse did not occur. Four acute rejections were fully reversed. CONCLUSIONS: This case represents a new underlying disease (trauma + GPA) leading to face transplantation and a unique clinical scenario where allografting was indicated for potentially life-threatening and sight-preserving reasons and not for mere functional and aesthetic concerns. Despite complexity, 3-year clinical outcome is encouraging, and the patient is no longer at risk for dural exposure, meningitis, and related morbidity.

Outcomes of Autologous Fat Grafting in Mastectomy Patients Following Breast Reconstruction.

BACKGROUND: Autologous fat grafting (AFG) is utilized for cosmetic improvement of the reconstructed breast following mastectomy. Fat necrosis (FN), a benign complication of AFG, can raise suspicion of malignancy and require further evaluation. OBJECTIVE: The aim of this study was to determine the incidence of FN in patients who have undergone AFG following mastectomy and reconstruction, and to identify factors contributing to FN. METHODS: A retrospective chart review was conducted of all patients who received AFG following mastectomy and reconstruction at our institution between 2011 and 2016, with a minimum 6-month follow-up period. Patient information, operative details, receipt of radiation, complications, and incidence of cancer recurrence were collected. RESULTS: A total of 171 patients were included in this study. AFG was performed by seven surgeons. Patients received an average of 1.18 treatments, with average follow-up of 26 months. Eighteen patients (10.5%) developed FN an average of 3.4 months following AFG. Patients with a larger volume injected at initial session (p = 0.044) and longer length of follow-up (p = 0.026) had significant increases in risk of developing FN. Core needle biopsy was performed in seven patients and two patients required excision. The rate of cancer recurrence was 1.7% for all patients and 0% in the AFG cohort. CONCLUSIONS: Increased risk of FN following AFG is associated with greater volume injected at the initial session and higher incidence over time. Although AFG is oncologically safe, patients should be counseled on the 10.5% incidence of FN presenting as a palpable abnormality, and the approximately 5% chance of requiring biopsy or excision.

Skeletal Changes of an Osteomyocutaneous Facial Allograft Five Years Following Transplantation.

BACKGROUND: More than 30 face transplantations have been performed worldwide, most including part of the facial skeletal framework. In this study, the modifications of the skeletal component of a facial allograft were evaluated. METHODS: Standard head computed tomography (CT) scans, CT angiogram, and bone mineral densitometry were evaluated. Cephalometric analysis was performed. The pre and postoperative CT images were overlapped and the skeletal changes were expressed in a numeric and color-coded scale. The values of the serum calcium, phosphate, vitamin D, alkaline phosphatase, thyroid and parathyroid hormones, TSH, FHS, LH, estradiol, total protein and albumin, serum creatinine, and creatinine clearance were reviewed. RESULTS: At 5 years follow-up the patient was 51 years old, asymptomatic and presented good stability of the Le Fort III component of the allograft. Computed tomography images revealed fibrous union of all fixation sites. There was minimal bone resorption at the osteotomy sites, left infraorbital rim and left maxillary buttress, and anterior maxilla (-0.28 mm). Computed tomography angiogram showed segmental absence at the origin of the left external carotid artery, good opacification of the rest of the external carotid arteries and its branches. Bone mineral densitometry evidenced osteopenia of the spine. The patient presented mild hypoalbuminemia (3.4 g/dL) and perimenopausal hormonal levels. CONCLUSIONS: The skeletal component of the facial allograft was stable over time. Minimal bone resorption was discovered at the level of the left infraorbital rim and anterior maxilla. Transplantation of bone within the facial allograft is a viable reconstructive option.

Complications Following Abdominal-Based Free Flap Breast Reconstruction: Is a 30 days Complication Rate Representative?

PURPOSE: The purpose of this study was to analyze timing and frequency of complications following free tissue autologous reconstruction in a single tertiary care institution. METHODS: From August 2012 to December 2013, all patients operated on for abdominal-based free flap breast reconstruction at a single institution were included. Complications were identified and risk factors associated with them were analyzed using SPSS software. RESULTS: The total number of patients was 130 with a total of 191 flaps (69 for unilateral and 61 for bilateral reconstructions). Mean surgery time was 570.5 min (±151.24). Fifty-nine of the reconstructed breasts (30.8 %) had early complications. Reoperations due to complications were required in 16 (8.3 %) of the breasts during the first 30 days with seven patients requiring multiple reoperations. Twenty-eight patients required reoperations after 30 days, the most frequent reason being delayed wound healing and abdominal hernia. The most significant complication was a case of disseminated infection with loss of skin coverage of the breasts. Early complications and donor-site complications were higher in active smokers (p = 0.005 and p < 0.001, respectively). Patients with a BMI < 25 had fewer total early complications (p = 0.05), as well as fewer complications on the breast area (p = 0.02). A longer time in the operating room was associated with an increase in late complications (p = 0.018). Bilateral/unilateral operation, immediate/delayed surgery, radiotherapy, age, hypertension, diabetes, and surgery time were not associated with early complications, late complications, or reoperations (p > 0.05). CONCLUSIONS: Active smoking was found to be a significant risk factor for early complications, reoperations, and donor-site complications. Patients with a normal BMI had fewer early complications, reoperations at 30 days, and complications on the breast area. As a significant number of complications occurred beyond the standard 30-day reporting period, it is important to consider reoperations during an extended period. LEVEL OF EVIDENCE IV: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

Breast reconstruction with abdominal-based free flaps in high body mass index population: postoperative complications and impact of weight loss.

Obesity, which is becoming endemic in the United States, causes a significant challenge for reconstructive surgeons. This study evaluates postoperative complications and impact of weight loss in the high body mass index (BMI) population undergoing breast reconstruction with abdominal free flaps. A retrospective review of 182 consecutive patients was performed. Patients were divided into groups according to their BMI at the time of surgery (preoperative BMI) and presence of weight loss, and data were compared among groups. Multivariate analysis of effect of preoperative BMI on complications revealed that overall flap (P = 0.008) and donor (P = 0.016) complication rates were significantly higher in the obese group. Analysis of preoperative weight loss did not yield a statistically significant reduction in flap (P = 0.5161) or donor (P = 0.8034) complication rates. Univariate analysis showed that higher preoperative BMI is associated with higher risk of systemic complications (P = 0.027). It is important to inform patients preoperatively that weight loss, although beneficial for ease of procedure and quality of life, does not diminish their increased risk of complications. Body mass index during surgery is the most important predictor of complications.

Clinical application of the FACES score for face transplantation.

OBJECTIVE: This study aimed to systematically evaluate all reported outcomes of facial allotransplantation (FT) using the previously described FACES scoring instrument. METHODS: This was a retrospective study of all consecutive face transplants to date (January 2012). Candidates were identified using medical and general internet database searches. Medical literature and media reports were reviewed for details regarding demographic, operative, anatomic, and psychosocial data, which were then used to formulate FACES scores. Pre-transplant and post-transplant scores for "functional status", "aesthetic deformity", "co-morbidities", "exposed tissue", and "surgical history" were calculated. Scores were statistically compared using paired-samples analyses. RESULTS: Twenty consecutive patients were identified, with 18 surviving recipients. The sample was composed of 3 females and 17 males, with a mean age of 35.0 ± 11.0 years (range: 19-57 years). Overall, data reporting for functional parameters was poor. Six subjects had complete pre-transplant and post-transplant data available for all 5 FACES domains. The mean pre-transplant FACES score was 33.5 ± 8.8 (range: 23-44); the mean post-transplant score was 21.5 ± 5.9 (range: 14-32) and was statistically significantly lower than the pre-transplant score (P = 0.02). Among the individual domains, FT conferred a statistically significant improvement in aesthetic defect scores and exposed tissue scores (P ≤ 0.01) while, at the same time, it displayed no significant increases in co-morbidity (P = 0.17). CONCLUSION: There is a significant deficiency in functional outcome reports thus far. Moreover, FT resulted in improved overall FACES score, with the most dramatic improvements noted in aesthetic defect and exposed tissue scores.

Nipple necrosis rate with submuscular versus prepectoral implant-based reconstruction in nipple sparing mastectomy: Does it differ?

BACKGROUND: This study aims to compare the rate of nipple necrosis between the submuscular (SM) versus the prepectoral (PP) implant placement after immediate breast reconstruction (IBR). METHODS: An institutional review board-approved database was reviewed of patients who underwent nipple sparing mastectomy (NSM) with IBR at our institution between 2016 and 2019. Patients who had SM versus PP IBR were compared. Incidence of nipple necrosis was evaluated between the two groups. RESULTS: A total of 525 NSM with IBR were performed in 320 patients with SM reconstruction in 61% (n â€‹= â€‹322) and PP in 39% (n â€‹= â€‹203) of the mastectomies. Overall, 43 nipples experienced some form of necrosis with 1% of mastectomies experiencing nipple loss. There was no difference between SM group and PP group at the rate of nipple necrosis (9 â€‹% vs 7 %, P â€‹= â€‹0.71). CONCLUSION: In patients undergoing NSM with IBR, the rate of nipple necrosis, nipple loss or complications did not differ between groups whether the implant was placed SM or PP, supporting the safety of this newer procedure.

Simultaneous contralateral prophylactic mastectomy compared to unilateral nipple-sparing mastectomy for breast cancer surgical treatment: Are complications higher?

BACKGROUND: This study compared post-operative reconstructive complications and oncologic treatment between patients who underwent unilateral versus bilateral nipple sparing mastectomy (NSM) with implant based reconstruction (IBR). METHODS: Patients diagnosed with unilateral breast cancer who underwent NSM with IBR between 2010 and 2019 were reviewed. Patient demographics, surgical details, adjuvant therapy and postoperative complications were analyzed. RESULTS: A total of 434 NSM with IBR were performed in 269 patients, 24% unilateral, and 76% bilateral. The bilateral group received a direct implant significantly more frequently and were younger compared to unilateral (p < 0.001). The unilateral group received post-mastectomy radiation therapy at significantly higher rate (p < 0.001) with no difference in receipt of adjuvant chemotherapy. Overall, 11% of mastectomies developed a 30-day complication requiring reoperation and that extended to 13% at 120 days. There was no difference regarding the incidence of complications requiring reoperation (p = 0.84) or complications type between the two groups (p = 0.29). CONCLUSION: These findings support the oncologic and reconstructive equivalence to support patient choice in CPM.

Predictors of Complications in Autologous Breast Reconstruction Using DIEP Flaps: Implications for Management.

BACKGROUND: Deep inferior epigastric perforator (DIEP) flaps are the standard for autologous breast reconstruction. This study investigated risk factors for DIEP complications in a large, contemporary cohort to optimize surgical evaluation and planning. METHODS: This retrospective study included patients who underwent DIEP breast reconstruction between 2016 and 2020 at an academic institution. Demographics, treatment, and outcomes were evaluated in univariable and multivariable regression models for postoperative complications. RESULTS: In total, 802 DIEP flaps were performed in 524 patients (mean age, 51.2 ± 9.6 years; mean body mass index, 29.3 ± 4.5). Most patients (87%) had breast cancer; 15% were BRCA -positive. There were 282 (53%) delayed and 242 (46%) immediate reconstructions and 278 (53%) bilateral and 246 (47%) unilateral reconstructions. Overall complications occurred in 81 patients (15.5%), including venous congestion (3.4%), breast hematoma (3.6%), infection (3.6%), partial flap loss (3.2%), total flap loss (2.3%), and arterial thrombosis (1.3%). Longer operative time was significantly associated with bilateral immediate reconstructions and higher body mass index. Prolonged operative time (OR, 1.16; P = 0.001) and immediate reconstruction (OR, 1.92; P = 0.013) were significant predictors of overall complications. Partial flap loss was associated with bilateral immediate reconstructions, higher body mass index, current smoking status, and longer operative time. CONCLUSIONS: Prolonged operative time is a significant risk factor for overall complications and partial flap loss in DIEP breast reconstruction. For each additional hour of surgical time, the risk of developing overall complications increases by 16%. These findings suggest that reducing operative time through co-surgeon approaches, consistency in surgical teams, and counseling patients with more risk factors toward delayed reconstructions may mitigate complications. CLINICAL QUESTION/LEVEL OF EVIDENCE: Risk, III.