A Systematic Review and Meta-Analysis Comparing the Clinical Outcomes of Profunda Artery Perforator Versus Gracilis Thigh Flap as a Second Choice for Autologous Breast Reconstruction.

PURPOSE: Autologous breast reconstruction remains a versatile option to produce a natural appearing breast after mastectomy. The deep inferior epigastric perforator remains the most commonly used flap choice, but when this donor site is unsuitable or unavailable, the transverse upper gracilis (TUG) or profunda artery perforator (PAP) flaps are popular secondary alternatives. We conduct a meta-analysis to better understand patient outcomes and adverse events in secondary flap selection in breast reconstruction. METHODS: A systematic search was conducted on MEDLINE and Embase for all articles published on TUG and/or PAP flaps for oncological breast reconstruction in postmastectomy patients. A proportional meta-analysis was conducted to statistically compare outcomes between PAP and TUG flaps. RESULTS: The TUG and PAP flaps were noted to have similar reported rates of success and incidences of hematoma, flap loss, and flap healing (P > 0.05). The TUG flap was noted to have significantly more vascular complications (venous thrombosis, venous congestion, and arterial thrombosis) than the PAP flap (5.0% vs 0.6%, P < 0.01) and significantly greater rates of unplanned reoperations in the acute postoperative period (4.4% vs 1.8%, P = 0.04). Infection, seroma, fat necrosis, donor healing complications, and rates of additional procedures all exhibited high degree of heterogeneity precluding mathematical synthesis of outcomes across studies. CONCLUSIONS: Compared with TUG flaps, PAP flaps have fewer vascular complications and fewer unplanned reoperations in the acute postoperative period. There is need for greater homogeneity in reported outcomes between studies to enable for synthesis of other variables important in determining flap success.

Evaluating the Inaccuracy of the National Surgical Quality Improvement Project Surgical Risk Calculator in Plastic Surgery: A Meta-analysis of Short-Term Predicted Complications.

BACKGROUND: Preoperative surgical risk assessment is a major component of clinical decision making. The ability to provide accurate, individualized risk estimates has become critical because of growing emphasis on quality metrics benchmarks. The American College of Surgeons National Surgical Quality Improvement Project (NSQIP) Surgical Risk Calculator (SRC) was designed to quantify patient-specific risk across various surgeries. Its applicability to plastic surgery is unclear, however, with multiple studies reporting inaccuracies among certain patient populations. This study uses meta-analysis to evaluate the NSQIP SRC's ability to predict complications among patients having plastic surgery. METHODS: OVID MEDLINE and PubMed were searched for all studies evaluating the predictive accuracy of the NSQIP SRC in plastic surgery, including oncologic reconstruction, ventral hernia repair, and body contouring. Only studies directly comparing SCR predicted to observed complication rates were included. The primary measure of SRC prediction accuracy, area under the curve (AUC), was assessed for each complication via DerSimonian and Laird random-effects analytic model. The I2 statistic, indicating heterogeneity, was judged low (I2 < 50%) or borderline/unacceptably high (I2 > 50%). All analyses were conducted in StataSE 16.1 (StataCorp LP, College Station, Tex). RESULTS: Ten of the 296 studies screened met criteria for inclusion (2416 patients). Studies were classified as follows: (head and neck: n = 5, breast: n = 1, extremity: n = 1), open ventral hernia repair (n = 2), and panniculectomy (n = 1). Predictive accuracy was poor for medical and surgical complications (medical: pulmonary AUC = 0.67 [0.48-0.87], cardiac AUC = 0.66 [0.20-0.99], venous thromboembolism AUC = 0.55 [0.47-0.63]), (surgical: surgical site infection AUC = 0.55 [0.46-0.63], reoperation AUC = 0.54 [0.49-0.58], serious complication AUC = 0.58 [0.43-0.73], and any complication AUC = 0.60 [0.57-0.64]). Although mortality was accurately predicted in 2 studies (AUC = 0.87 [0.54-0.99]), heterogeneity was high with I2 = 68%. Otherwise, heterogeneity was minimal (I2 = 0%) or acceptably low (I2 < 50%) for all other outcomes. CONCLUSIONS: The NSQIP Universal SRC, aimed at offering individualized quantifiable risk estimates for surgical complications, consistently demonstrated poor risk discrimination in this plastic surgery-focused meta-analysis. The limitations of the SRC are perhaps most pronounced where complex, multidisciplinary reconstructions are needed. Future efforts should identify targets for improving SRC reliability to better counsel patients in the perioperative setting and guide appropriate healthcare resource allocation.

Natural Language Processing in Surgery: A Systematic Review and Meta-analysis.

OBJECTIVE: The aim of this study was to systematically assess the application and potential benefits of natural language processing (NLP) in surgical outcomes research. SUMMARY BACKGROUND DATA: Widespread implementation of electronic health records (EHRs) has generated a massive patient data source. Traditional methods of data capture, such as billing codes and/or manual review of free-text narratives in EHRs, are highly labor-intensive, costly, subjective, and potentially prone to bias. METHODS: A literature search of PubMed, MEDLINE, Web of Science, and Embase identified all articles published starting in 2000 that used NLP models to assess perioperative surgical outcomes. Evaluation metrics of NLP systems were assessed by means of pooled analysis and meta-analysis. Qualitative synthesis was carried out to assess the results and risk of bias on outcomes. RESULTS: The present study included 29 articles, with over half (n = 15) published after 2018. The most common outcome identified using NLP was postoperative complications (n = 14). Compared to traditional non-NLP models, NLP models identified postoperative complications with higher sensitivity [0.92 (0.87-0.95) vs 0.58 (0.33-0.79), P < 0.001]. The specificities were comparable at 0.99 (0.96-1.00) and 0.98 (0.95-0.99), respectively. Using summary of likelihood ratio matrices, traditional non-NLP models have clinical utility for confirming documentation of outcomes/diagnoses, whereas NLP models may be reliably utilized for both confirming and ruling out documentation of outcomes/diagnoses. CONCLUSIONS: NLP usage to extract a range of surgical outcomes, particularly postoperative complications, is accelerating across disciplines and areas of clinical outcomes research. NLP and traditional non-NLP approaches demonstrate similar performance measures, but NLP is superior in ruling out documentation of surgical outcomes.

Machine Learning and Surgical Outcomes Prediction: A Systematic Review.

BACKGROUND: Machine learning (ML) has garnered increasing attention as a means to quantitatively analyze the growing and complex medical data to improve individualized patient care. We herein aim to critically examine the current state of ML in predicting surgical outcomes, evaluate the quality of currently available research, and propose areas of improvement for future uses of ML in surgery. METHODS: A systematic review was conducted in accordance with the Preferred Reporting Items for a Systematic Review and Meta-Analysis (PRISMA) checklist. PubMed, MEDLINE, and Embase databases were reviewed under search syntax "machine learning" and "surgery" for papers published between 2015 and 2020. RESULTS: Of the initial 2677 studies, 45 papers met inclusion and exclusion criteria. Fourteen different subspecialties were represented with neurosurgery being most common. The most frequently used ML algorithms were random forest (n = 19), artificial neural network (n = 17), and logistic regression (n = 17). Common outcomes included postoperative mortality, complications, patient reported quality of life and pain improvement. All studies which compared ML algorithms to conventional studies which used area under the curve (AUC) to measure accuracy found improved outcome prediction with ML models. CONCLUSIONS: While still in its early stages, ML models offer surgeons an opportunity to capitalize on the myriad of clinical data available and improve individualized patient care. Limitations included heterogeneous outcome and imperfect quality of some of the papers. We therefore urge future research to agree upon methods of outcome reporting and require basic quality standards.

Venous Thromboembolism and Bleeding Events With Chemoprophylaxis in Abdominoplasty: A Systematic Review and Pooled Analysis of 1596 Patients.

BACKGROUND: Many plastic surgeons avoid the administration of venous thromboembolism (VTE) chemoprophylaxis out of concern for surgical bleeding in abdominoplasty. Although previous studies have attempted to address the relationship between abdominoplasty and bleeding or VTE, poor reporting techniques remain a challenge. As a result, there has been a lack of reliable data to guide clinical practice. OBJECTIVES: The authors sought to determine the prevalence of bleeding and VTE in abdominoplasty with and without chemoprophylaxis. METHODS: A systematic review was performed following PRISMA guidelines utilizing PubMed, CINAHL, and Cochrane Central. Patient demographics, comorbidities, risk category (if available), bleeding events, VTE events, and chemoprophylaxis information were recorded. RESULTS: Across 10 articles, 691 patients received chemoprophylaxis in the setting of abdominoplasty: 68 preoperatively, 588 postoperatively, and 35 received both; 905 patients did not receive chemoprophylaxis. A total of 96.8% of patients were female, 73% underwent concomitant liposuction, and none were clearly risk stratified. The overall incidence of VTE and bleeding was 0.56% (9/1596) and 1.6% (25/1596), respectively. Compared with no chemoprophylaxis, chemoprophylaxis was not associated with increased incidence of bleeding (1.3% [9/671] vs 0.91% [8/881], P = 0.417) or decreased incidence of VTE (0.87% [6/691] vs 0.33% [3/901], P = 0.187). CONCLUSIONS: The prevalence of bleeding in abdominoplasty was low. Chemoprophylaxis was not associated with increased risk of bleeding or decreased risk of VTE, though the lack of risk stratification and heterogeneity of the cohort precludes firm conclusions. This study underscores the importance of utilizing validated risk-stratification tools to guide perioperative decision-making.

Can We Predict Incisional Hernia?: Development of a Surgery-specific Decision-Support Interface.

OBJECTIVE: The aim of this study was to identify procedure-specific risk factors independently associated with incisional hernia (IH) and demonstrate the feasibility of preoperative risk stratification through the use of an IH risk calculator app and decision-support interface. SUMMARY BACKGROUND DATA: IH occurs after 10% to 15% of all abdominal surgeries (AS) and remains among the most challenging, seemingly unavoidable complications. However, there is a paucity of readily available, actionable tools capable of predicting IH occurrence at the point-of-care. METHODS: Patients (n = 29,739) undergoing AS from 2005 to 2016 were retrospectively identified within inpatient and ambulatory databases at our institution. Surgically treated IH, complications, and costs were assessed. Predictive models were generated using regression analysis and corroborated using a validation group. RESULTS: The incidence of operative IH was 3.8% (N = 1127) at an average follow-up of 57.9 months. All variables were weighted according to ß-coefficients generating 8 surgery-specific predictive models for IH occurrence, all of which demonstrated excellent risk discrimination (C-statistic = 0.76-0.89). IH occurred most frequently after colorectal (7.7%) and vascular (5.2%) surgery. The most common occurring risk factors that increased the likelihood of developing IH were history of AS (87.5%) and smoking history (75%). An integrated, surgeon-facing, point-of-care risk prediction instrument was created in an app for preoperative estimation of hernia after AS. CONCLUSIONS: Operative IH occurred in 3.8% of patients after nearly 5 years of follow-up in a predictable manner. Using a bioinformatics approach, risk models were transformed into 8 unique surgery-specific models. A risk calculator app was developed which stakeholders can access to identify high-risk IH patients at the point-of-care.

Predicting Adverse Perioperative Events in Patients Undergoing Primary Cleft Palate Repair.

OBJECTIVE: This study aimed to identify risk factors for adverse perioperative events (APEs) after cleft palatoplasty to develop an individualized risk assessment tool. DESIGN: Retrospective cohort. SETTING: Tertiary institutional. PATIENTS: Patients younger than 2 years with cleft palate. INTERVENTIONS: Primary Furlow palatoplasty between 2008 and 2011. MAIN OUTCOME MEASURE(S): Adverse perioperative event, defined as laryngo- or bronchospasm, accidental extubation, reintubation, obstruction, hypoxia, or unplanned intensive care unit admission. RESULTS: Three hundred patients averaging 12.3 months old were included. Cleft distribution included submucous, 1%; Veau 1, 17.3%; Veau 2, 38.3%; Veau 3, 30.3%; and Veau 4, 13.0%. Pierre Robin (n = 43) was the most prevalent syndrome/anomaly. Eighty-three percent of patients received reversal of neuromuscular blockade, and total morphine equivalent narcotic dose averaged 0.19 mg/kg. Sixty-nine patients (23.0%) had an APE, most commonly hypoventilation (10%) and airway obstruction (8%). Other APEs included reintubation (4.7%) and laryngobronchospasm (3.3%). APE was associated with multiple intubation attempts (odds ratio [OR] = 6.6, P = .001), structural or functional airway anomaly (OR = 4.5, P < .001), operation >160 minutes (OR = 2.2, P = .04), narcotic dose >0.3 mg/kg (OR = 2.3, P = .03), inexperienced provider (OR = 2.1, P = .02), and no paralytic reversal administration (OR = 2.0, P = .049); weight between 9 and 13 kg was protective (OR = 0.5, P = .04). Patients were risk-stratified according to individual profiles as low, average, high, or extreme risk (APE 2.5%-91.7%) with excellent risk discrimination (C-statistic = 0.79). CONCLUSIONS: APE incidence was 23.0% after palatoplasty, with a 37-fold higher incidence in extreme-risk patients. Individualized risk assessment tools may enhance perioperative clinical decision making to mitigate complications.

Managing Groin Wounds after Infrainguinal Vascular Procedures: Examining the Reoperative Events and Complication Profile of Muscle Flap Reconstruction.

BACKGROUND: The literature has been void of large outcome studies detailing the efficacy and complication profile of muscle flap reconstruction of complex groin wounds. Furthermore, a first-line choice for muscle flap selection remains unclear. The aim of this study is 2-fold: (1) to examine the complication profile and associated risk factors following muscle flap coverage and (2) to provide a compared efficacy analysis of the sartorius muscle flap (SMF) versus the rectus femoris flap (RFF) in the treatment of wounds following an infrainguinal vascular procedure. METHODS: A retrospective review of records was performed on all patients undergoing complex groin wound reconstruction from January 2005 to September 2014. RESULTS: A total of 201 flaps were performed on 184 patients. There were no sentinel bleeding events through the course of graft salvage or perioperative morbidity beyond local wound complications. Coronary artery disease (P = 0.049), dyslipidemia (P < 0.001), diabetes (P = 0.047), and history of multiple prior infrainguinal procedures (P = 0.029) were associated with increased complications following groin wound reconstruction. There was no statistically significant difference in complications in comparing the RFF versus the SMF (27.9% vs. 38.9% respectively; P = 0.109). There was no significant difference in the rates of graft salvage in comparing the RFF versus the SMF (21.6% vs. 16.1%, respectively; P = 0.459). CONCLUSIONS: Muscle flap coverage can be safely employed for vascular graft salvage. Medical comorbidities and multiple prior infrainguinal procedures are predictive of perioperative complications. The SMF and RFF demonstrated equivocal rates of complications and graft salvage. Given that the RFF risks increased functional morbidity and necessitates a second donor site, the SMF may be considered as an effective first-line approach for reconstruction of complex groin wounds.

Minority and Public Insurance Status: Is There a Delay to Alveolar Bone Grafting Surgery?

OBJECTIVE: This study sought to determine the timing of alveolar bone grafting (ABG) surgery among children with cleft lip with or without cleft palate (CL±P) with regard to race and insurance status. DESIGN: A retrospective chart review of consecutive patients receiving ABG surgery was conducted. A multivariate regression model was constructed using predetermined clinical and demographic variables. SETTING: A large, urban cleft referral center. PATIENTS, PARTICIPANTS: Nonsyndromic patients with CL±P were eligible for study inclusion. INTERVENTIONS: ABG surgery using autogenous bone harvested from the anterior iliac crest. MAIN OUTCOME MEASURE: The primary outcome of interest was age at ABG surgery. RESULTS: A total of 233 patients underwent ABG surgery at 8.1 ± 2.3 years of age. African American and Hispanic patients received delayed ABG surgery compared with Caucasian patients by approximately 1 year (P < .05). There was no difference in ABG surgery timing by insurance status (P > .05). CONCLUSIONS: The timing of ABG surgery varied by race but not by insurance status. Greater resources may be needed to ensure timely delivery of cleft care to African American and Hispanic children.

Complications and Cost Analysis of Intraoperative Arterial Complications in Head and Neck Free Flap Reconstruction.

Background Microvascular anastomotic patency is fundamental to head and neck free flap reconstructive success. The aims of this study were to identify factors associated with intraoperative arterial anastomotic issues and analyze the impact on subsequent complications and cost in head and neck reconstruction. Methods A retrospective review was performed on all head and neck free flap reconstructions from 2005 to 2013. Patients with intraoperative, arterial anastomotic difficulties were compared with patients without. Postoperative outcomes and costs were analyzed to determine factors associated with microvascular arterial complications. A regression analysis was performed to control for confounders. Results Total 438 head and neck free flaps were performed, with 24 (5.5%) having intraoperative arterial complications. Patient groups and flap survival between the two groups were similar. Free flaps with arterial issues had higher rates of unplanned reoperations (p < 0.001), emergent take-backs (p = 0.034), and major surgical (p = 0.002) and respiratory (p = 0.036) complications. The overall cost of reconstruction was nearly double in patients with arterial issues (p = 0.001). Regression analysis revealed that African American race (OR = 5.5, p < 0.009), use of vasopressors (OR = 6.0, p = 0.024), end-to-side venous anastomosis (OR = 4.0, p = 0.009), and use of internal fixation hardware (OR =3.5, p = 0.013) were significantly associated with arterial complications. Conclusion Intraoperative arterial complications may impact complications and overall cost of free flap head and neck reconstruction. Although some factors are nonmodifiable or unavoidable, microsurgeons should nonetheless be aware of the risk association. We recommend optimizing preoperative comorbidities and avoiding use of vasopressors in head and neck free flap cases to the extent possible.

A Risk Model and Cost Analysis of Incisional Hernia After Elective, Abdominal Surgery Based Upon 12,373 Cases: The Case for Targeted Prophylactic Intervention.

OBJECTIVES: Incisional hernia (IH) remains a common, highly morbid, and costly complication. Modest progress has been realized in surgical technique and mesh technology; however, few advances have been achieved toward understanding risk and prevention. In light of the increasing emphasis on prevention in today's health care environment and the billions in costs for surgically treated IH, greater focus on predictive risk models is needed. METHODS: All patients undergoing gastrointestinal or gynecologic procedures from January 1, 2005 to June 1, 2013, within the University of Pennsylvania Health System were identified. Comorbidities and operative characteristics were assessed. The primary outcome was surgically treated IH after index procedures. Patients with prior hernia, less than 1-year follow-up, or emergency surgical procedures were excluded. Cox hazard regression modeling with bootstrapped validation, risk factor stratification, and assessment of model performance were conducted. RESULTS: A total of 12,373 patients with a 3.5% incidence of surgically treated IH (follow-up 32.2 ±â€Š26.6 months) were identified. The cost of surgical treatment of IH and management of associated complications exceeded $17.5 million. Notable independent risk factors for IH were ostomy reversal (HR = 2.76), recent chemotherapy (HR = 2.04), bariatric surgery (HR = 1.78), smoking history (HR = 1.74), liver disease (HR = 1.60), and obesity (HR = 1.96). High-risk patients (20.6%) developed IH compared with 0.5% of low-risk patients (C-statistic = 0.78). CONCLUSIONS: This study demonstrates an internally validated preoperative risk model of surgically treated IH after 12,000 elective, intra-abdominal procedures to provide more individualized risk counseling and to better inform evidence-based algorithms for the role of prophylactic mesh.

The Timing of Breast Irradiation in Two-Stage Expander/Implant Breast Reconstruction.

Certain patients who initiate expander/implant (E/I) reconstruction following mastectomy may require radiation therapy (XRT). XRT may be delivered during the tissue expander (TE) expansion process or after exchange for a permanent implant (PI). We studied a series of women treated with E/I reconstruction and XRT to determine whether there is a difference in complication rates between those who had XRT to the TE versus PI. All two-stage E/I reconstructions at our institution from April 2005 to January 2013 were reviewed to identify patients who underwent XRT after TE placement. Our database was queried for reconstructive details, oncologic treatment, and complications. Statistical analyses were performed to establish significance of complication rate differences. Fifty-two patients underwent XRT after TE placement, 42 of which had XRT to the TE and 11 of which had XRT to the PI. The major complication rates (complications requiring emergent reoperation/readmission) were 27% versus 0% (p = 0.05) for XRT to the TE versus XRT to the PI, but there were no significant differences in minor complication rates (outpatient complications). Specifically, the rates of Grade 3/4 capsular contracture were similar between the two groups, 27% for the XRT to the TE group and 36% for the XRT to the PI group. Radiation of the PI versus radiation of the TE did not result in significant differences in overall surgical complication rates but had fewer major complications and no implant failures. Other factors must also be considered, such as patient preference, risk of cancer reoccurrence, and cosmesis. It is essential for a patient to have a team of a plastic surgeon and radiation, surgical, and medical oncologists working together to achieve each patient's goals.

A Systematic Meta-analysis of Prosthetic-Based Breast Reconstruction in Irradiated Fields With or Without Autologous Muscle Flap Coverage.

BACKGROUND: The popularity of implant-based breast reconstruction, along with the well-established benefits of radiation therapy, unfortunately can lead to device placement into irradiated fields. Here, we compare prosthetic reconstructions with latissimus dorsi (LD) or subpectoral implants alone via systematic meta-analysis. METHODS: A literature search identified articles involving prosthetic-based breast reconstruction in the setting of prior irradiation with or without an LD flap. The primary outcomes of interest, including device loss, capsular contracture, reoperation, and infection, were analyzed via head-to-head meta-analysis. RESULTS: Thirty-one studies and 1275 reconstructions were included. Average age was 48.9 years and average follow-up was 42.8 months. The head-to-head odds ratio for implant loss with implant-only versus LD-assisted reconstruction was 4.33 (P = 0.0003, I = 7%), favoring LD-assisted reconstruction. Implant loss in pooled analysis was 5.0% for LD-assisted reconstruction and 15.0% for implant-only (P < 0.001). CONCLUSIONS: In previously irradiated fields, prostheses placed with an LD flap demonstrated a clinically significant reduction in device loss, infection, and reoperation.

Bilateral Free Flap Breast Reconstruction After Unilateral Radiation: Comparing Intraoperative Vascular Complications and Postoperative Outcomes in Radiated Versus Nonradiated Breasts.

BACKGROUND: Radiation induces vessel damage and impairs tissue healing. To date, only 1 study has examined radiation's impact in autologous breast reconstruction on intraoperative vascular complications and postoperative outcomes. In this follow-up paper, we examine a larger cohort with an improved study design to better control for patient characteristics. METHODS: A database of 1780 patients who underwent autologous breast free flap reconstruction at the University of Pennsylvania's Health System between 2003 and 2014 was searched for patients who underwent bilateral breast reconstruction after unilateral radiation, returning 199 patients for review. These were then analyzed for intraoperative vascular complications as well as postoperative complications. McNemar tests were performed on all variables, comparing between radiated and nonradiated fields. RESULTS: Fields with prior radiation were significantly more likely to have any type of intraoperative vascular complication and need for arterial anastomotic revision compared to fields without prior radiation (14% versus 7%, P = 0.03 and 8% versus 3%, P = 0.04, respectively). Although there was a trend for more frequent arterial thrombosis in radiated compared to nonradiated fields, this was nonsignificant (7% versus 3%, P = 0.08). There was no significant difference in venous thrombosis or need for venous anastomotic revision. Radiated fields were significantly more likely to have postoperative wound infections compared to nonradiated fields (4% versus 0.5%, P = 0.04). There was no difference in other postoperative complications, including postoperative thrombosis, flap loss, mastectomy flap necrosis, fat necrosis, hematoma, seroma, or delayed wound healing. CONCLUSIONS: Intraoperative vascular complications and postoperative wound infections are significantly more likely to occur in autologous breast free flap reconstruction with previous radiation therapy. It is important to plan for and counsel patients that fields with previous radiation are at higher risk for these complications.

Operative Management of Nonsyndromic Sagittal Synostosis: A Head-to-Head Meta-analysis of Outcomes Comparing 3 Techniques.

BACKGROUND: The timing and surgical technique for the treatment of sagittal synostosis remain controversial. Calvarial vault remodeling (CVR), strip craniectomy (SC), and spring-mediated cranioplasty (SMC) are currently in use. We perform a meta-analysis of the literature to compare these 3 techniques. METHODS: A literature search identified articles involving operative management of nonsyndromic sagittal synostosis. Comparison of 2 operative techniques was required, and methodology was assessed via the American Society of Plastic Surgeons' Levels of Evidence. Three techniques were considered: CVR, SC, and SMC. Meta-analysis was conducted for change in cephalic index (CI), reported as weighted mean difference (WMD). Pooled subgroup comparisons were performed for operative time, length of stay, blood loss, and cost. RESULTS: Twelve studies providing level 2 or 3 evidence were included. All studies involved CVR (n = 187), 8 involved SC (n = 299), and 7 involved SMC (n = 158). Head-to-head comparison of change in CI demonstrated a greater, yet statistically insignificant change for CVR versus SMC, WMD = 0.94 (-0.23 to 2.11) (P = 0.12, I(2) = 55%). Calvarial vault remodeling showed a statistically greater change in CI versus SC, WMD = 1.47 (0.47-2.48) (P = 0.004, I(2) = 66%). Compared with SMC/SC, CVR had longer operative length (170 vs 97 minutes), higher blood loss (238 vs 47 mL), longer length of stay (5.1 vs 2.9 days), and higher costs ($35,280 vs $13,147), all with P < 0.0001. CONCLUSIONS: This study, the first meta-analysis comparing 3 primary operations for correcting nonsyndromic sagittal synostosis, demonstrates no difference in CI for CVR versus SMC and a small but statistically greater improvement in CI favoring CVR over SC. Secondary outcomes favored SC/SMC procedures over CVR. However, long-term studies are still needed to adequately assess the risk-benefit ratios.

Total Airway Reconstruction in the Neonate: Combined Mandibular Distraction and Slide Tracheoplasty for Multiple Level Airway Obstruction.

BACKGROUND: Long-segment congenital tracheal stenosis (CTS) is characterized by segmental tracheal stenosis, complete tracheal rings, and absent posterior pars membranosa for >50% of tracheal length. Slide tracheoplasty on cardiopulmonary bypass (CPB) has traditionally been the procedure of choice for airway reconstruction. Pierre Robin sequence (PRS) is characterized by the triad of micrognathia, glossoptosis, and airway obstruction. The authors and others, have demonstrated the efficacy of mandibular distraction osteogenesis (MDO) to avoid tracheostomy in severe cases of PRS. METHODS: The authors present a unique case of the multidisciplinary management of long-segment CTS and concomitant PRS via total airway reconstruction off CPB, involving our otolaryngology, cardiothoracic, and plastic surgery teams. RESULTS: This 36-week baby girl, prenatally diagnosed with PRS and polyhydramnios concerning for airway obstruction, was delivered via planned ex utero intrapartum treatment (EXIT). Tracheostomy was aborted because of long-segment CTS. A 2.5-French endotracheal tube (ETT) was temporarily sutured in before transfer to our facility for definitive airway management.Bilateral MDO was performed without complication at 2 weeks old (distraction to 20mm by postoperative day 25). At 6 weeks old, delayed slide tracheoplasty avoiding cardiopulmonary bypass was followed by an uneventful recovery. Most recent follow-up demonstrates airway patency without signs of obstruction. CONCLUSIONS: This patient's case is the first reporting combined MDO and slide tracheoplasty to relieve multilevel neonatal airway obstruction. Unique and challenging, it demonstrates the importance of multidisciplinary management of complex neonatal airway obstruction.

Perioperative risk factors in patients with 22q11.2 deletion syndrome requiring surgery for velopharyngeal dysfunction.

Objective : To determine the prevalence of cardiac, cervical spine, and carotid artery abnormalities in patients with 22q11.2 deletion syndrome (22q11.2DS) undergoing surgery for velopharyngeal dysfunction (VPD), associations between the presence of these abnormalities, and whether these abnormalities caused changes in surgical management or perioperative complications. Design : Retrospective review. Setting : Tertiary pediatric hospital. Patients : Seventy patients with 22q11.2DS with complete preoperative cervical vascular and spine imaging and cardiac evaluation between 1998 and 2011. Main Outcome Measures : Incidence of cardiac, cervical spine, and vascular abnormalities; related perioperative complications; and resulting changes in surgical, anesthetic, or perioperative management plan. Results : Cardiac abnormalities occurred in 45 patients (64.3%), and 8 patients required cardiac anesthesia. Thirty-eight patients (54.3%) had at least one vascular abnormality of the neck, and 14% had medial deviation of the internal carotid artery. Surgery was not performed in one patient, and the surgical plan was altered in three patients because of carotid anomalies. Cervical spine abnormalities were found in 24 patients (34.3%); 8 patients demonstrated radiographic evidence of cervical instability and were treated with spinal precautions during surgery. The presence of one anomaly was not predictive of any other finding, and there were no complications related to the heart, cervical spine, or carotid arteries. Conclusions : Anomalies of the heart, cervical spine, and cervical vasculature occur frequently in 22q11.2DS, vary drastically in severity, and are impossible to predict based on other features of the syndrome. Preoperative diagnosis of these comorbidities with routine imaging can minimize the risk of avoidable surgical complications.

Loupes-Only Microsurgery is a Safe Alternative to the Operating Microscope: An Analysis of 1,649 Consecutive Free Flap Breast Reconstructions.

BACKGROUND: Loupes-only microsurgery challenges the paradigm that free flap surgery requires an operating microscope. We describe our loupes-only microsurgery experience with an emphasis on rates of intraoperative anastomotic revision and total flap loss. METHODS: We identified all patients having breast reconstruction with muscle-sparing transverse rectus abdominis myocutaneous (ms-TRAM) or deep inferior epigastric perforator (DIEP) flaps over 7 years. We examined rates of intraoperative anastomotic revision and total flap loss as markers of technical quality. For one high-volume surgeon who started loupes-only microsurgery while at our institution, we examined rates of intraoperative anastomotic revision and total flap loss rates over time to evaluate for a learning curve. RESULTS: We performed 1,649 ms-TRAM or DIEP flaps in 1,063 patients. For 1,649 flaps, the rate of artery anastomotic revision was 2.2% (36 arteries) and venous anastomotic revision was 2.2% (37 veins). Any microvascular revision was performed in 3.5% (58 flaps). Total flap loss rate was 1.2% (20 flaps).For the "learning curve" analysis, there were no clinically relevant differences in rates of any intraoperative anastomotic revision or total flap loss during the first 60 months after loupes-only microsurgery was adopted. Total flap loss during this surgeon's first 60 months of loupes-only microsurgery was 1.6% (10 of 638 flaps). CONCLUSIONS: Loupes-only microsurgery is a safe alternative to the operating microscope for free flap breast reconstruction using the deep inferior epigastric system. Our total flap loss rate of 1.2% in 1,649 flaps is at the low end of published flap loss rates.

A 35-year experience with syndromic cleft palate repair: operative outcomes and long-term speech function.

BACKGROUND: Associated comorbidities can put syndromic patients with cleft palate at risk for poor speech outcomes. Reported rates of velopharyngeal insufficiency (VPI) vary from 8% to 64%, and need for secondary VPI surgery from 23% to 64%, with few studies providing long-term follow-up. The purpose of this study was to describe our institutional long-term experience with syndromic patients undergoing cleft palatoplasty. METHODS: A retrospective review was conducted of all patients with syndromic diagnoses undergoing primary Furlow palatoplasty from 1975 to 2011. Outcomes included postoperative oronasal fistula (ONF) and need for secondary VPI surgery. Speech scores for verbal patients 5 years or older were collected via the Pittsburgh scale for speech assessment. Aggregate scores categorized the velopharyngeal mechanism as competent, borderline, or incompetent. Outcomes were analyzed by patient and operative factors. RESULTS: One hundred thirty-two patients were included with average age at repair of 20.7 months. Cleft type was 9% submucosal, 16% Veau class I, 50% class II, 12% class III, and 13% class IV. Forty-five syndromes were recorded, most commonly Stickler syndrome (n = 32) and 22q11.2 deletion syndrome [22q11.2DS (n = 19)]. Forty-four patients also had associated Pierre Robin sequence (PRS). The overall ONF rate was 4.5% and was highest in Veau class IV clefts (P = 0.048). Seventy-six patients were included in speech analysis, with an average age at last assessment of 10.4 years. Overall, 60.5% of patients had a competent velopharyngeal mechanism, 23.7% borderline, and 15.8% incompetent mechanism. Fifty percent of 22q11.2DS patients had borderline speech and none had competent speech, compared to 73.3% with Stickler syndrome (P = 0.01) and 71.4% of patients with associated PRS (P = 0.02). Secondary VPI surgery was performed in 11.4% of patients overall. Patients with PRS (13.6%) and with Stickler syndrome (15.6%) had secondary VPI surgery, compared to 31.6% of patients with 22q11.2DS (P = 0.01). CONCLUSIONS: This study demonstrates low rates of postoperative ONF after modified Furlow palatoplasty in syndromic patients. Speech outcomes were comparable to nonsyndromic patients at our institution, but patients with 22q11.2DS consistently had borderline-incompetent speech and a 3-fold higher incidence of secondary VPI surgery.

Mandible Fractures Undergoing Transfer Rarely Require Acute Intervention.

Study Design: A retrospective review was conducted of all patients with mandibular fractures who were evaluated by plastic surgery at a Level I trauma center between January 1, 2017 and May 1, 2020. Data including demographic characteristics, mechanism of injury, type of presentation (e.g., primary or transfer), treatment plan, and time to intervention were recorded. Objective: Mandibular fractures are common traumatic injuries. Because these injuries are managed by surgical specialists, these patients are often emergently transferred to tertiary care hospitals. This study aims to assess the benefits of emergent transfer in this patient group. Methods: Variables were summarized using descriptive statistics. The relationship with initial disposition was assessed via tests of association, including Student's t-test, Fisher's exact test, or chi-square tests. Significance was set to p values less than 0.05. Multivariate regression analysis was conducted to determine predictors of presentation to outside hospital followed by transfer to our institution. Results: Records from 406 patients with isolated mandibular fractures were evaluated. 145 (36%) were transferred from an outside hospital specifically for specialty evaluation. One patient required intervention in the Emergency Department (ED). Of the 145 patients that were transferred to our facility, eight (5.5%) were admitted for operative management. Patients with open injuries and pediatric patients showed benefit from transfer. Conclusions: Patients are frequently transferred to tertiary care facilities for specialty service evaluation and treatment. However, when isolated mandible fractures were evaluated, only one patient required intervention in the ED. Patients with grossly open fractures and pediatric patients were more frequently admitted specifically for operative management. This practice of acute interfacility transfer represents an unnecessary cost to our health system as isolated mandible fractures can be managed on an outpatient basis. We suggest that pediatric patients and patients with open fractures be transferred for urgent evaluation and management, whereas most patients would be appropriate for outpatient evaluation.