Employing machine learning for enhanced abdominal fat prediction in cavitation post-treatment.

This study investigates the application of cavitation in non-invasive abdominal fat reduction and body contouring, a topic of considerable interest in the medical and aesthetic fields. We explore the potential of cavitation to alter abdominal fat composition and delve into the optimization of fat prediction models using advanced hyperparameter optimization techniques, Hyperopt and Optuna. Our objective is to enhance the predictive accuracy of abdominal fat dynamics post-cavitation treatment. Employing a robust dataset with abdominal fat measurements and cavitation treatment parameters, we evaluate the efficacy of our approach through regression analysis. The performance of Hyperopt and Optuna regression models is assessed using metrics such as mean squared error, mean absolute error, and R-squared score. Our results reveal that both models exhibit strong predictive capabilities, with R-squared scores reaching 94.12% and 94.11% for post-treatment visceral fat, and 71.15% and 70.48% for post-treatment subcutaneous fat predictions, respectively. Additionally, we investigate feature selection techniques to pinpoint critical predictors within the fat prediction models. Techniques including F-value selection, mutual information, recursive feature elimination with logistic regression and random forests, variance thresholding, and feature importance evaluation are utilized. The analysis identifies key features such as BMI, waist circumference, and pretreatment fat levels as significant predictors of post-treatment fat outcomes. Our findings underscore the effectiveness of hyperparameter optimization in refining fat prediction models and offer valuable insights for the advancement of non-invasive fat reduction methods. This research holds important implications for both the scientific community and clinical practitioners, paving the way for improved treatment strategies in the realm of body contouring.

Danger Zones of the Gluteal Anatomy: Improving the Safety Profile of the Gluteal Fat Grafting.

INTRODUCTION: Knowledge of the vascular anatomy is critical to performing safe gluteal surgery. To date, only the course of the main blood vessels within the muscles has been outlined. These findings are based on MRI and CTA images that do not conform to a topographically standardized and normalized probability distribution. OBJECTIVES: The aim of this study was to develop a three-dimensional mapping of the gluteal zones of high vascular density in relation to anatomical landmarks. MATERIALS AND METHODS: This single-center retrospective cohort analysis comprised all consecutive patients who underwent cone-beam computed tomography (CBCT) scans between January 2016 and October 2021. The location of blood vessels in the gluteal region was allometrically normalized in relation to anatomical landmarks. Moreover, the caliber and area of the blood vessels were assessed. RESULTS: CBCT scans of 32 patients with an average age of 64 ± 12 years (range 34-87 years) were included. Fifty-three percent were female. The median [IQR] caliber of the intramuscular gluteal vessels was 1.47 [1.15-1.88] mm, significantly greater than that of the subcutaneous vessels 1.09 [0.72-1.44] mm (p < 0.001). Vascular density was higher intramuscularly, as 4.5% of the area of the muscle was occupied by blood vessels, as opposed to 0.3% in the adipose tissue. CONCLUSION: The analysis of the CBCT scans showed a higher vascular density and larger vessels intramuscularly. We, therefore, recommend the injection of autologous fat merely to the subcutaneous plane. LEVEL OF EVIDENCE II: 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 .

[Postbariatric plastic surgery for body reconstruction]. / Postbariatrische plastische Körperrekonstruktionen.

Massive weight loss following bariatric surgery is often accompanied by functional impairments due to the resulting excess skin and soft tissues. To achieve both functional reconstruction and restoration of the body silhouette, it is imperative to undergo body contouring surgery involving the strategic transposition of tissues. Several surgical techniques are available for the affected body regions and their application for treatment is determined by the unique circumstances specific to each patient. When conducted by skilled practitioners, postbariatric body reconstruction can be executed safely, leading to outcomes that are both functionally and esthetically satisfying, ultimately contributing to an enhanced quality of life for patients. This article provides the fundamental principles for patient selection, surgical preparation, treatment planning, surgical techniques and the postoperative care following bariatric surgery.

High-Intensity Focused Electromagnetic (HIFEM) Energy With and Without Radiofrequency for Noninvasive Body Contouring: A Systematic Review.

BACKGROUND: Emsculpt Neo (EmSculpt NEO Device, BTL Industries, Inc.) is a FDA-cleared noninvasive body contouring treatment for increasing muscle tone and/or reducing fat. The device uses high-intensity electromagnetic energy to stimulate muscle contractions and to build muscle mass (Emsculpt) or a combination of electromagnetic energy with radiofrequency (Emsculpt NEO) to produce a synergistic effect of building muscle mass and reducing fat. In this study, we conduct a high-quality systematic review to evaluate outcomes for Emsculpt and Emsculpt NEO treatments for noninvasive body contouring. METHODS: An electronic search was performed of the PubMed, MEDLINE, Embase, and Web of Science databases using the key terms "High intensity focused electromagnetic therapy; HIFEM; Emsculpt; Emsculpt NEO; BTL Industries." The search included all articles published in English through January 2023. Inclusion criteria included articles noninvasive body contouring and reporting at least one outcome of interest (clinical or patient-reported outcomes). Methodological quality and risk of bias were assessed using the GRADE criteria. Articles involving applications other than for body contouring, animal studies, and review articles were excluded. RESULTS: Of the 159 articles identified in the initial search strategy, 51 met relevance based on abstract screening. Fifteen clinical studies were identified, including Emsculpt (n=11) and Emsculpt NEO (n=2). The typical protocol involved four treatments given over a 2-4-week period (range 3-8 treatments) with increase to 100% intensity setting and 1-6-month follow-ups. No complications were reported. Abdominal measurements were obtained using imaging were reported in eight studies. Treated areas included the buttocks (n=4), thighs (n=3), arms or calves (n=1), and abdomen (n=11). For abdominal contouring, mean reductions of fat thickness were 5.5 mm, muscle thickness of 2 mm, and rectus diastasis improvement of 3.0 mm. No studies reported weight change before and after treatment. All studies with patient-reported outcomes report high patient satisfaction. Two studies report marginal or no benefit of treatment. Certain studies failed to report comorbidities or demographic characteristics other than age and sex, which precludes analysis of specific subgroups that may benefit from treatment. Furthermore, certain studies failed to address how missing data or the final study population was analyzed. CONCLUSION: This systematic review reports on currently published evidence regarding the efficacy and safety of Emsculpt and Emsculpt NEO for body contouring. High-quality level data reporting with patient-reported outcomes will optimize shared decision-making and informed consent. LEVEL OF EVIDENCE II: Therapeutic study. 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 .

Non-invasive Body Contouring Technologies: An Updated Narrative Review.

INTRODUCTION: Nowadays, a lot of body contouring devices and methods are introduced all over the world. The object of the present narrative review was to update and classify existing evidence on these methods and devices. METHODS: We searched databases including PubMed, Cochrane, and Google Scholar for 11 essential keywords, including cryolipolysis, high-intensity focused ultrasound (HIFU), shock wave, low-level laser therapy (LLLT), radiofrequency (RF), capacitive resistive electrical transfer (TECAR), high-intensity focused electromagnetic (HIFEM), electromyostimulation (EMS), carboxytherapy, mesotherapy, and acupuncture and their abbreviations, in addition to obesity, overweight, cellulite, subcutaneous fat, and body contouring. RESULTS: Totally 193 references were used in 11 main topics. CONCLUSION: In order to help physicians with finding the best evidence in different methods, the data were summarised in 11 topics. Furthermore, FDA-approved devices, side effects and common protocols were described in each section. LEVEL OF EVIDENCE I: This journal requires that authors 39 assign a level of evidence to each article. For a full 40 description of these Evidence-Based Medicine ratings, 41 please refer to the Table of Contents or the online 42 Instructions to Authors www.springer.com/00266 .

Flowchart in Post-Bariatric Surgery: A Research for the Appropriate Type and Timing of Plasties Reshaping the Body.

INTRODUCTION: Obesity is a chronic disease with significant health implications. Bariatric surgery is an effective treatment for obesity-related conditions. However, the timing of post-bariatric body contouring surgery remains uncertain. MATERIALS AND METHODS: We conducted a retrospective study of 1336 patients who underwent bariatric surgery. We analyzed weight trends and variations after different types of bariatric procedures. The Pittsburgh Index was used to evaluate body contouring outcomes. RESULTS: The majority of patients were women, and sleeve gastrectomy was the most common procedure. Weight loss varied depending on the surgery type, with different outcomes for male and female patients. The Pittsburgh Index remained stable in most cases. CONCLUSION: Our findings suggest that the timing of body contouring surgery should be tailored to the type of bariatric procedure performed. Abdominoplasty is recommended as a last procedure for sleeve gastrectomy patients, while gastric bypass patients are suitable candidates for early abdominoplasty. Biliopancreatic diversion patients should stabilize their weight before abdominoplasty. The Pittsburgh Index is a valuable tool for assessing the timing of post-bariatric plastic surgery. Further research is needed to optimize surgical planning and outcomes. LEVEL OF EVIDENCE V: 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 .

Weight Loss After VASER-Assisted Liposuction.

BACKGROUND: Liposuction is one of the most common procedures used for body contouring. In this study, we aimed to determine whether there is a weight change with VASER-assisted liposuction (VAL) procedure and the demographic factors affecting it. METHODS: A total of 51 patients (30 females and 21 males) who underwent VAL between the years of 2020 and 2022 were included in the study. Participants' weights before VAL, body mass indexes (BMI), aspiration volumes, demographic data, and weights and BMIs one month after VAL were recorded and analyzed. In addition, the fat ratio in the aspirate was determined in ten patients. RESULTS: The mean aspiration volume with VAL was 4832.50 ± 2373.26 ml in females and 5176.90 ± 1602.61 ml in males. Body weights (baseline, 90.34 ± 9.17 vs. 71.01 ± 8.87; one month later, 86.95 ± 8.34 vs. 66.28 ± 10.04: p < 0.001) and BMIs (baseline, 28.59 ± 2.97 vs. 26.40 ± 3.69; one month later, 27.54 ± 2.92 vs. 24.59 ± 3.76: p = 0.009) were higher in males than females, both at baseline and after VAL. There was a significant decrease in body weights and BMIs after VAL in both females (4.73 ± 4.73 kg) and males (3.39 ± 4.27 kg) (p < 0.001). However, no correlation was observed between the decrease in body weights and BMIs after VAL and gender, age, aspirate volume, and fat volume. CONCLUSION: Although there was a decrease in mean body weight and mean BMI in both males and females one month after VAL, no associations were observed between weight drop after VAL and gender, age, aspiration volume, and fat volume. 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 .

[Microfocussed vs. macrofocussed ultrasound for body contouring]. / Mikro- versus makrofokussierter Ultraschall zum Bodycontouring.

Focussed ultrasound is capable of heating tissue in small microscopic areas up to 65-70 °C and is a technique that can be used not only for destruction of superficial tissue but also for fat reduction. The focussing of sound waves according to the principle of a bundling of rays is carried out without injury to the skin. The penetration depth of the coagulation depends on the wavelength. Wavelengths that reach penetration depths of 6mm, 9mm and even 13mm and therefore deeper layers of the dermis and fat tissue are new. These enable fat cells to be eliminated and ultimately lead to girth reduction and also additionally to tightening. The effectiveness has been confirmed by several studies.

The Safety and Effects of Pregnancy after Abdominoplasty: A Systematic Review of the Literature.

BACKGROUND: As advanced maternal age and bariatric procedures have become more common, the number of women seeking pregnancy after having abdominoplasty has increased. This has traditionally been a relative contraindication and counselled against, though there are little data in the literature regarding the potential effects to mother and baby. METHODS: A systematic review of Medline and Embase databases was performed to identify cases of pregnancy occurring after abdominoplasty. Data were extracted and analysed for presentation. RESULTS: 17 studies encompassing 237 patients met inclusion. Mean age was 33.08 years. Mean parity prior to first pregnancy after abdominoplasty 2.13. Previous bariatric surgery was reported in 31.75%. Body contouring procedure was abdominoplasty (94.51%), body lift (3.80%) and other (1.69%). Rectus plication was performed in 89.74%, where reported. Mean time between abdominoplasty and pregnancy was 3.75 years. Method of delivery was Caesarean section in 43.63%, and vaginal delivery in 56.37%. Mean gestational age at delivery was 38.90 weeks. Preterm delivery (<37 weeks) was reported in 9.85%, and low birthweight (<2500 g) was reported in 7.22%. Diagnoses or complications were documented in 14 studies (136 patients). These were grouped as foetal/neonatal (n = 21), maternal (n = 104) or abdominal wall/aesthetic (n = 96); and are detailed within. There were no neonatal or maternal mortalities in any study. A lower-than-expected spinal anaesthetic block was stated in 3 cases. Mean follow-up was 8.5 months. CONCLUSION: Pregnancy should not be contraindicated after abdominoplasty. The data presented allow clinicians to have an evidence-based discussion and provide information for shared decision-making. LEVEL OF EVIDENCE III: 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.

Postbariatric Abdominoplasty: A Comparative Study on Scarpa Fascia Preservation Versus Classical Technique.

BACKGROUND: Abdominoplasties performed with Scarpa Fascia preservation, improve recovery and reduce complications, particularly seroma. Bariatric patients who experience massive weight loss frequently seek body contouring procedures and represent a high-risk group. This study aimed to evaluate the effects of abdominoplasty with Scarpa Fascia preservation versus the classical technique in a bariatric population. METHODS: A retrospective observational cohort study was performed between March 2015 and March 2021 in 65 postbariatric patients who underwent a classic full abdominoplasty (group A, N = 25) or a similar procedure except for the preservation of Scarpa fascia (group B, N = 40). Total and daily drain output, time until drain removal, long drainers (≥ 6 days), length of hospital stay, emergency department visit, readmission to the hospital, reoperation, local and systemic complications were the outcomes evaluated. RESULTS: Group B had a 3-day reduction in time until drain removal (p < 0.001), a 62.6% reduction of total drain output (p < 0.001) and a 3-day reduction in the length of the hospital stay (p < 0.001). Long drainers (≥ 6 days) were highly reduced (from 56.0% in group A to 7.5% in group B) (p < 0.001). There was a lower incidence of liquid collections in group B, with a 66.7% reduction in seroma incidence. CONCLUSIONS: Abdominoplasty with Scarpa Fascia preservation improves recovery by reducing drain output, allowing earlier drain removal and reducing long periods with suction drains. It also reduces hospital stay and seroma incidence. This technique modifies the high-risk postbariatric patient in such a major way that he behaves like a nonbariatric. LEVEL OF EVIDENCE II: 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 .

Weight Control following Body Contouring Surgery: Long-Term Assessment of Postbariatric and Nonbariatric Patients.

BACKGROUND: Few reports of weight maintenance following body contouring (BC) surgery present weight measurements as percentage weight change, and most of these studies do not isolate BC to specific body areas. This study analyzed weight control in the trunk-based BC population and further compared BC outcomes in postbariatric and nonbariatric patients. METHODS: The authors performed a retrospective cohort study of consecutive postbariatric and nonbariatric patients who underwent trunk-based BC (abdominoplasty, panniculectomy, and circumferential lipectomy) from January 1, 2009, through July 31, 2020, at West Virginia University. A minimum 12-month follow-up was required for inclusion. With BC surgery date as the reference point, percentage total weight loss was assessed at 6-month intervals for 2 years following BC and every year thereafter. Change over time was compared between postbariatric and nonbariatric patients. RESULTS: Within the 12-year timeframe, 121 patients meeting criteria underwent trunk-based BC. Average follow-up from date of BC was 42.9 months. Sixty patients (49.6%) had previously undergone bariatric surgery. From before BC to endpoint follow-up, postbariatric and nonbariatric patients experienced a 4.39% ± 10.93% and 0.25% ± 9.43% increase in weight from baseline, respectively ( P = 0.0273). Once nadir weight loss was attained, weight regain occurred through endpoint follow-up in both groups (11.81% in the postbariatric cohort and 7.56% in the nonbariatric BC cohort; P = 0.0106). CONCLUSIONS: Long-term weight regain is common following trunk-based BC operations-specifically, in postbariatric patients. Although this should not contend with the psychological benefit of removing this excess tissue, it is important to report results with ideal weight metrics to optimally assess outcomes in this population. CLINICAL QUESTION/LEVEL OF EVIDENCE: Risk, II.

Defining the Ideal Male Buttocks.

BACKGROUND: There is no well-defined male buttock aesthetic. The authors performed a crowdsourced analysis to define the ideal male buttocks. METHODS: A survey was deployed using the Amazon MTurk platform. Respondents rated a panel of digitally altered male buttocks from most to least attractive using three views. Respondents were asked questions pertaining to their own interest in gluteal augmentation, self-reported body type, and other demographics. RESULTS: A total of 2095 responses were recorded; 61% were from male respondents, 52% of respondents were between the ages of 25 and 34 years, and 49% were White respondents. The preferred lateral ratio in the anteroposterior dimension was 1.18; the oblique angle between the sacrum, lateral gluteal depression, and point of maximal projection of the gluteal sulcus was 60 degrees; and the posterior ratio between the waist and maximal width of the hips was 0.66. This corresponds to moderate gluteal projection in the lateral and oblique views, with a narrower gluteal width and defined trochanteric depression in the posterior view. Loss of the trochanteric depression was associated with lower scores. Subgroup analysis revealed differences when stratified by region, race, sexual orientation, employment industry, and athletic interest. No appreciable difference was found based on respondent sex. CONCLUSIONS: The authors' results demonstrate that there is a preferred male gluteal aesthetic. This study suggests that men and women favor a more projected male buttock with a more pronounced contour, but preferred a narrow width with defined lateral depression. These findings have the potential to guide future aesthetic gluteal contouring techniques in men.

Treating Saddlebag Deformity after Massive Weight Loss: Vertical versus Lower Body Lift.

SUMMARY: The saddlebag deformity remains a persistent and difficult-to-treat problem after body-contouring surgery. A new way to handle the saddlebag deformity is with the vertical lower body lift (VLBL). This retrospective cohort study evaluated the overall reconstruction outcome of the VLBL in 16 patients (32 saddlebags) and compared it to standard lower body lift (LBL). The BODY-Q and the Pittsburgh Rating Scale (PRS)-Saddlebag Scale were used in the evaluation process. Surgical outcomes regarding the saddlebag deformity were in favor of the VLBL technique in patients with marked saddlebag deformity. A 1.16 decrease in mean PRS saddlebag score (relative change of 61.7%) was observed for the VLBL group versus a mean decrease of 0.29 (relative change of 21.6%) in the LBL group. BODY-Q end point and change in scores did not differ between the VLBL and LBL groups at 3-month follow-up, but at 1-year follow-up, they were in favor of the VLBL group in the body appraisal domain. Patients were highly satisfied with the contour and appearance of their lateral thigh, despite the extra scarring caused by this novel technique. Therefore, the authors advise clinicians to consider performing a VLBL instead of the standard LBL in patients with notable saddlebag deformities after massive weight loss. CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, III.

Litigation Cases After Post-Bariatric Surgery: Lesson from the Past.

BACKGROUND: Due to the high demand of post-bariatric surgeries, the number of litigation cases is rapidly growing. Even if surgical mistakes still represent one of the main causes of medico-legal issues, many disputes depend on what happens in the post-operative course. In this article we analyzed the litigation cases that occurred in our Plastic Surgery Department, the current literature about medico-legal disputes and the importance of the doctor-patient relationship. PATIENTS AND METHODS: The medical records of 788 post-bariatric surgeries, the post-operative complications and the related litigation cases from January 2015 to December 2019 were collected, analyzed and compared. RESULTS: We performed 380 abdominoplasties, 28 torsoplasties, 65 breast reductions, 99 mastopexies, 94 brachioplasties, 52 thighplasties, 65 liposuctions and 5 facelifts between 2015 and 2019. Eight patients complained of medical issues and claimed for litigation. Despite in all cases the judges highlighted the risk of consent misinterpretation, the payout was granted only in one case. CONCLUSION: Post-bariatric patients often mistake their preoperative condition and consider body contouring procedures as an aesthetic surgery treatment. Patients should be therefore clearly informed about the complexity of body contouring procedures after massive weight loss, which should never be compared to aesthetic surgery. Surgeons should always promote the communication with their patients and build a strong and trustworthy relationship. This attitude will allow to deal more easily with complications and, in the worst situations, with medico-legal litigations. 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 .

From the SAFE to the SAFEST Liposuction: Combining PAL and RFAL Technology in Body Contouring Procedures.

BACKGROUND: The SAFE liposuction technique is a worldwide extended method used to achieve great and reproducible results after the surgical aspiration of fat. We propose an evolution of the technique to address one of the major limitations of liposuction, loose skin. The SAFEST liposuction technique combines PAL and RFAL to achieve skin tightening and fat reduction with minimal added morbidity. METHODS: Patients treated with the SAFEST liposuction technique between December 2019 and February 2022 were included in the study. Demographic and surgical data were collected retrospectively. Photographs and satisfaction interviews were conducted preoperatively and 12 months postoperatively in every case. RESULTS: Sixty-five patients (58 female and 7 male) were included in the cohort, and a total of 169 anatomical areas were treated with the SAFEST liposuction technique (abdomen, arms, back, flanks and thighs). Globally, satisfaction at 12 months follow-up was of 94.1% and complications only presented in 4.7% of the treated areas. 6 of the 38 treated abdomens (18.4%) presented a complication (4 seromas and 2 access point infections) and 2 of the 38 treated flanks (5.3%) presented one (2 seromas). The rest of the treated anatomical areas (arms, back and thighs) showed no complications and high satisfaction rates. CONCLUSIONS: The SAFEST liposuction technique achieves outstanding and satisfying results with minimal complications by safely combining the advantages of two different technologies, PAL and RFAL. The main advantages of the presented technique are the skin tightening, the body ligament contraction, the coagulation and the reduction of the operative time. 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 .

Efficacy of Endolift laser for arm and under abdomen fat reduction.

BACKGROUND: Noninvasive laser for body fat contouring is a quickly growing field in the cosmetic dermatology. Surgical options carry disadvantages, such as the usage of anesthetics, swelling, pain and long time for recovery, so there is a growing public request for the techniques with fewer side effects and shorter recovery periods. Several new noninvasive body contouring ways have been advanced such as, cryolipolysis radiofrequency energy, suction-massage, high-frequency focused ultrasound, and laser therapy. Noninvasive laser improves the body's appearance by the elimination of excess adipose tissue, specifically in areas in which fat perseveres in spite of diet and exercise. METHODS: In this study the efficacy of Endolift laser was evaluated for reduction of excess fat in the arms and under abdomen. Ten patients with excess fat in the arms and under abdomen were enrolled in this study. The patients were treated by Endolift laser in the arms and under abdomen areas. The outcomes were evaluated by two blinded board certified dermatologists and by patients' satisfaction. The circumference of each arm and under abdomen was measured using a flexible tape measure. RESULTS: The results showed reduction in the fat and circumference of arms and under abdomen after treatment. The treatment was considered as effective methods with high patient satisfaction. Also no severe adverse effects were reported. CONCLUSION: Endolift laser can be a good alternative to surgical body fat contouring due to its efficacy, safety, minimal recovery time, low cost. Also Endolift laser does not require general anesthetics.

The Impact of Prior Infection With SARS-Cov-2 on Surgical Outcomes in Patients Undergoing Abdominal Body Contouring Procedures.

BACKGROUND: There is evidence of increased postoperative complications in patients who have recovered from SARS-CoV-2. However, previous studies have not examined this effect in abdominal contouring procedures. METHODS: A retrospective review was conducted for all patients who underwent abdominoplasty or panniculectomy at our institution from March 2020 to November 2021. Patients were separated into cohorts via preoperative history of SARS-CoV-2 infections. Variables collected include demographic data, concurrent comorbidities, postoperative complications, readmission/reoperation, and length of stay. Parametric, nonparametric, and multivariable regression modeling was used for analysis. RESULTS: Of the 181 patients included, 14 (7.7%) had a prior SARS-CoV-2 infection. Average time from infection to surgery was 250 days. The mean age and Charlson Comorbidity Index for nonexposed and exposed patients were 45.4 and 45.9 years, and 1.24 and 1.36 points. Patients with prior SARS-CoV-2 infection were more likely to have chronic kidney disease (odds ratio [OR], 6.79; P = 0.017) and undergo abdominoplasties compared with panniculectomies (OR, 4.43; P = 0.039). There were no other significant differences in patient or operative characteristics between the cohorts. Compared with those with no history of infection, patients with prior infections had increased odds of postoperative complications such as delayed wound healing (OR, 27.67; P < 0.001). No other significant associations were found between prior SARS-CoV-2 infection and perioperative outcomes. CONCLUSION: Prior SARS-CoV-2 infections may be associated with increased incidence of delayed wound healing despite a significant time lag between the time of infection and operation. Further studies are needed to elucidate the exact relationship and mechanism of action behind these findings.

A Systematic Review of Electromagnetic Treatments for Body Contouring.

BACKGROUND: Energy-based treatments include ultrasound, lasers, cryolipolysis, and radiofrequency. The most recent energy treatment for noninvasive body contouring is electromagnetic treatments-a hot topic in plastic surgery today. A systematic review to assess efficacy and safety has not been published. METHODS: An electronic search was performed using PubMed to identify the literature describing electromagnetic treatments. Measurements from imaging studies were tabulated and compared. RESULTS: Fourteen clinical studies were evaluated. Two studies included simultaneous radiofrequency treatments. In 11 studies, the Emsculpt device was used; in 2 studies, the Emsculpt-Neo device was used. One study included a sham group of patients. The usual protocol was 4 treatments given over a 2-week period. No complications were reported. Eight studies included abdominal measurement data obtained using magnetic resonance imaging, computed tomography, or ultrasound. Photographic results were typically modest. Photographs showing more dramatic results also showed unexplained reductions in untreated areas.Measurement variances were high. The mean reduction in fat thickness was 5.5 mm. The mean increment in muscle thickness was 2.2 mm. The mean decrease in muscle separation was 2.9 mm (P = 0.19). Early posttreatment ultrasound images in 1 study showed an echolucent muscle layer, compared with a more echodense layer at the baseline, consistent with tissue swelling after exercise. Almost all studies were authored by medical advisors for the device manufacturer. DISCUSSION: Measurement data show small reductions in fat thickness, occurring almost immediately after the treatments. Adipocyte removal without tissue swelling would be unique among energy-based treatments. Similarly, muscle hypertrophy is not known to occur acutely after exercise; muscle swelling likely accounts for an early increment in muscle thickness. Any improvement in the diastasis recti is likely fictitious. CONCLUSIONS: Electromagnetic treatments, either administered alone or in combination with radiofrequency, are safe. However, the evidence for efficacy is tenuous. Measured treatment effects are very small (<5 mm). Conflict of interest and publication bias are major factors in studies evaluating energy-based alternatives. The evidence-based physician may not be satisfied that an equivocal treatment benefit justifies the time and expense for patients.

Retrospective Analysis of Predictive Factors for Complications in Abdominoplasty in Massive Weight Loss Patients.

INTRODUCTION: Ex-obese patients present with redundancy of abdominal skin and soft tissue due to massive weight loss (MWL). The plastic surgeon can restore the body shape through body contouring procedures. Hence the need to adequately direct patients to body contouring by identifying suitable candidates exists. Our work aims to retrospectively analyze the abdominoplasty complications in our case series to identify associated risk factors and evaluate the effect of combined procedures on abdominoplasty outcomes. MATERIALS AND METHODS: We retrospectively investigated predictive factors of abdominoplasty procedure complications on 213 MWL patients who received abdominoplasty with and without rectus sheath plication, abdominal liposuction, and other body contouring procedures. We identified risk and protective factors with univariate and multivariate regression analysis. Furthermore, we assessed the impact of additional procedures on the complication rates. RESULTS: The overall complication rate was 49.8% (26.8% minor complications; 23% major complications). The delayed wound healing rate was 27.7%, and the revision surgery rate was 25.8% (14.7% early revision; 14.2% late revision). These results were compared with literature reports. Several negative predictors emerged as non-modifiable (advanced age, diabetes mellitus, surgical mode of weight loss) or modifiable (preoperative obesity and body mass index (BMI); active smoking; preoperative anemia; use of fibrin glue or quilting sutures). Performing rectus sheath plication improved most of the outcomes. Liposuction of hypochondriac regions and flanks led to increased safety and reduced the risk of surgical dehiscence and delayed wound healing, in contrast to epimesogastric liposuction. The other combined body contouring procedures did not worsen the outcomes, except for poor scarring. CONCLUSION: Our findings encourage us to continue associating rectus sheath plication, liposuction, and other body contouring surgeries with abdominoplasty. We emphasize the importance of proper patient selection, particularly with regard to anemia, before body contouring surgery in the interests of offering safe surgery and satisfactory results. Further studies are needed to investigate how the optimal BMI cut-off and abstinence from smoking (in terms of time) before surgery reduce postoperative complications. 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 https://www.springer.com/journal/00266 .

Current Practices and Guidelines for Perioperative Blood Management in Post-Bariatric Body Contouring Surgery: A Comprehensive Review of Literature.

With the increase in obesity prevalence, a noticeable increase in bariatric surgeries has been reported in national and international statistics. Therefore, body contouring surgeries have increased to help individuals achieve their desired body shape. Plastic surgeons need to consider potential hematologic complications that may occur in this specific group of patients before performing body contouring surgery. This review illustrates the perioperative medical, laboratory, and management strategies needed to minimize blood loss and blood transfusion requirements during body contouring. Using Google Scholar and PubMed, a comprehensive literature review was conducted to identify articles discussing post-bariatric body contouring perioperative blood management strategies, including the effects of bariatric surgery on hemostasis as well as basic hematology and coagulation. In preoperative blood management, blood investigations aid in the early detection of electrolytes, protein, and vitamin deficiencies and anemia, resulting in the early correction of nutritional deficiencies. In order to reduce postoperative complications, surgical and anesthesia techniques, as well as intraoperative pharmacological therapy, play an essential role. Postoperative blood transfusion and restrictive transfusion thresholds are tailored to the patient's needs and depend on various physiological indicators, such as heart rate, blood pressure, urine output, and laboratory findings, such as acidosis and hematocrit level. Generally, post-bariatric body contouring blood management measures are still lacking, and more research is required to develop standardized guidelines for optimizing patient safety and satisfaction.Level of Evidence III 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 .