(F)utility of preoperative pulmonary function testing in pectus excavatum to assess severity.

PURPOSE: The utility of pulmonary function testing (PFT) in pectus excavatum (PE) has been subject to debate. Although some evidence shows improvement from preoperative to postoperative values, the clinical significance is uncertain. A high failure-to-completion rate for operative PFT (48%) was identified in our large institutional cohort. With such a high non-completion rate, we questioned the overall utility of PFT in the preoperative assessment of PE and sought to evaluate if other measures of PE severity or cardiopulmonary function could explain this finding. METHODS: Demographics, clinical findings, and results from cardiac MRI, PFT (spirometry and plethysmography), and cardiopulmonary exercise tests (CPET) were reviewed in 270 patients with PE evaluated preoperatively between 2015 and 2018. Regression modeling was used to measure associations between PFT completion and cardiopulmonary function. RESULTS: There were no differences in demographics, symptoms, connective tissue disorders, or multiple indices of pectus severity and cardiac deformation in PFT completers versus non-completers. While regression analysis revealed higher RVEF, LVEF, and LVEF-Z scores, lower RV-ESV/BSA, LV-ESV/BSA, and LV-ESV/BSA-Z scores, and abnormal breathing reserve in PFT completers vs. non-completers, these findings were not consistent across continuous and binary analyses. CONCLUSIONS: We found that PFT completers were not significantly different from non-completers in most structural and functional measures of pectus deformity and cardiopulmonary function. Inability to complete PFT is not an indicator of pectus severity.

Prevalence and Outcomes of High versus Low Ratio Plasma to Red Blood Cell Resuscitation in a Multi-Institutional Cohort of Severely Injured Children.

BACKGROUND: The benefit of targeting high ratio fresh frozen plasma (FFP):red blood cell (RBC) transfusion in pediatric trauma resuscitation is unclear as existing studies are limited to patients who retrospectively met criteria for massive transfusion. The purpose of this study is to evaluate the use of high ratio FFP:RBC transfusion and the association with outcomes in children presenting in shock. METHODS: A post-hoc analysis of a 24-institution prospective observational study (4/2018-9/2019) of injured children <18 years with elevated age-adjusted shock index was performed. Patients transfused within 24 hours were stratified into cohorts of low (<1:2) or high (>1:2) ratio FFP:RBC. Nonparametric Kruskal-Wallis and chi-square were used to compare characteristics and mortality. Competing risks analysis was used to compare extended (≥75th percentile) ventilator, intensive care, and hospital days while accounting for early deaths. RESULTS: Of 135 children with median (IQR) age 10 (5,14) years and weight 40 (20,64) kg, 85 (63%) received low ratio transfusion and 50 (37%) high ratio despite similar activation of institutional massive transfusion protocols (MTP; low-38%, high-46%, p = .34). Most patients sustained blunt injuries (70%). Median injury severity score was greater in high ratio patients (low-25, high-33, p = .01); however, hospital mortality was similar (low-24%, high-20%, p = .65) as was the risk of extended ventilator, ICU, and hospital days (all p > .05). CONCLUSION: Despite increased injury severity, patients who received a high ratio of FFP:RBC had comparable rates of mortality. These data suggest high ratio FFP:RBC resuscitation is not associated with worst outcomes in children who present in shock. MTP activation was not associated with receipt of high ratio transfusion, suggesting variability in MTP between centers. LEVEL OF EVIDENCE: Prospective cohort study, Level II.

Associations between marital status and weight loss trajectories entering into early adulthood: a Teen-LABS study.

BACKGROUND: Among adolescents who underwent metabolic and bariatric surgery (MBS), it is unclear how relationships and specifically marital status (MS) may be associated with long-term weight loss. OBJECTIVE: In this analysis, we tested for associations between the MS of adolescents who underwent MBS and the MS of their primary caregiver and weight loss trajectory over 8 years. SETTING: Teen-LABS participating sites. METHODS: This sample included 231 participants (75.3% female, 71.4% White, 68.0% Roux-en-Y gastric bypass, 27.7% vertical sleeve gastrectomy, 4.3% laparoscopic adjustable gastric band). A linear mixed model was conducted with the dependent variable percent body mass index (BMI) change from preoperatively through 8 years with between-participant factors (1) participant MS, (2) caregiver MS, and (3) interaction between caregiver and participant MS. RESULTS: One third of participants and 87% of caregivers were ever married (EM). Compared with never-married (NM) participants and caregivers (-14.6%), EM participants and caregivers (-20.6%), EM participants and NM caregivers (-25.9%), and NM participants and EM caregivers (-19.8%), each had significantly greater BMI loss at 8 years (each P < .05). No other group comparisons achieved statistical significance. CONCLUSIONS: NM participants with NM caregivers had less favorable long-term BMI. Additional research is needed to better understand how relationships affect behavior change and weight loss after MBS.

Prognostic factors in resolution of nonalcoholic fatty liver disease post bariatric surgery in adolescents.

BACKGROUND: The long-term effect of bariatric surgery on adolescent non-alcoholic fatty liver disease is not clear. OBJECTIVES: To evaluate longitudinal change in serum alanine aminotransferase (ALT) levels and to determine the factors independently associated with this change over 2 years after bariatric surgery in adolescents with severe obesity. SETTING: An observational prospective cohort from the Teen-LABS Consortium. METHODS: We examined the relationship of longitudinal change in serum ALT (% change and normalization) to change in body mass index (BMI), homeostasis model assessment of insulin resistance (HOMA-IR), triglycerides (TG), high- (HDL) and low-density lipoprotein cholesterol, A1C and fasting glucose, accounting for age, sex, race-ethnicity, blood pressure, and baseline BMI in 219 adolescents during the first 2 years post-surgery. RESULTS: Mean BMI declined from a baseline of 52.6 to 37.2 kg/m2 at 2 years (P < .01). Alanine aminotransferase decreased significantly from baseline (36.5 [95% CI: 31.4, 41.7]) to 6 months (30.5 [95% CI: 25.4, 35.6]), and remained stable at 12 and 24 months, all P < .01 versus baseline. After adjustment, improvement in BMI, fasting glucose, HOMA-IR, triglycerides, TG/HDL ratio, and HDL were independently associated with reduced ALT at 6 months. These remained significantly associated with a decline in ALT after adjusting for BMI change. The %participants with elevated ALT decreased from 71% at baseline to 42% and 36% at 1 and 2 years post-surgery. CONCLUSIONS: Bariatric surgery resulted in significant and sustained improvement in ALT levels over 2 years. Although associated with weight loss, this decline was also associated with improved metabolic indices, independent of weight loss.

Self-worth and developmental outcomes in young adults after pediatric bariatric surgery.

OBJECTIVES: Bariatric surgery has emerged as a safe/effective treatment for adolescents with severe obesity; therefore, understanding its impact over the life course is imperative. This study examined self-worth and developmental outcomes during the transition to adulthood (19-24 years old) for youth who underwent surgery as adolescents (13-18 years old) and a nonsurgical group with severe obesity. METHOD: As part of a prospective and multisite observational study series, adolescents (139 surgical, 83 nonsurgical) were followed for 6 years postsurgery/baseline when they completed height/weight measurements and measures of global self-worth, maturity, and occupational, educational, and social functioning as young adults. Growth curve analysis examined global self-worth change, while regressions were used to compare groups and examine adolescent-reported familial predictors and weight-related correlates for outcomes. RESULTS: Relative to the nonsurgical group, the surgical group experienced a significant quadratic improvement in self-worth and higher year 6 romantic self-perceptions. For the surgical group only, greater family dysfunction predicted lower young adult self-worth and perceptions of maturity, while higher family connectedness predicted higher self-worth and perceptions of maturity. Greater percent weight loss was associated with higher perceptions of maturity for the surgical group. CONCLUSIONS: Group difference findings suggest that the impact of surgery was on self-worth and romantic self-perceptions, outcomes linked in the developmental literature to body image. For both groups, functioning appeared similar to population-based findings, suggesting they are meeting "expected" age-salient developmental outcomes. The impact of earlier positive family functioning on self-worth and self-perceptions of maturity may place adolescents on pathways to success. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

A Prospective Cohort of Alcohol Use and Alcohol-related Problems Before and After Metabolic and Bariatric Surgery in Adolescents.

OBJECTIVE: To describe alcohol use, alcohol-related harm, and alcohol-related problems preoperatively and up to 8 years following metabolic and bariatric surgery (MBS) in adolescents. BACKGROUND: Risk for alcohol use and alcohol use disorders (AUD) increases post-Roux-en-Y gastric bypass and vertical sleeve gastrectomy in adults. However, data are lacking in adolescents who undergo MBS. METHODS: This study includes 217 adolescents (aged 13-19 y) enrolled in a 5-center prospective cohort study who underwent Roux-en-Y gastric bypass or vertical sleeve gastrectomy (2007-2011) and reported alcohol use preoperatively and annually postoperatively for up to 8 years. Time to elevated Alcohol Use Disorder Identification Test-Consumption (AUDIT-C) score, alcohol-related harm, and alcohol-related problems were analyzed with Kaplan-Meier estimates of cumulative incidence. RESULTS: Preoperatively, the median age was 17 years; the median body mass index was 51 kg/m 2 . Alcohol use frequency and average quantity of drinks per drinking day increased postoperatively (2% consumed alcohol 2-4 times/month 6 months versus 24% 8 years postoperatively, P <0.001; 2% consumed≥3 drinks per drinking day 6 months versus 35% 8 years postoperatively, P <0.001). Cumulative incidence of postoperative onset elevated AUDIT-C score, alcohol-related harm, and alcohol-related problems at year 8 were 45% (95% CI:37-53), 43% (95% CI:36-51), and 47% (95% CI:40-55), respectively. CONCLUSIONS: Nearly half of those who underwent MBS as adolescents screened positively for AUD, symptoms of alcohol-related harm, or alcohol-related problems 8 years post-MBS, highlighting the risk for alcohol use and AUD after MBS in adolescents. AUD evaluation and treatment should be integrated into routine long-term care for adolescents undergoing MBS.

Marijuana, e-cigarette, and tobacco product use in young adults who underwent pediatric bariatric surgery.

BACKGROUND: The postoperative course after pediatric metabolic and bariatric surgery (MBS) cuts across a developmental phase when substance-use behaviors emerge as significant public health concerns. OBJECTIVE: We examined use of marijuana, conventional cigarettes, and alternate tobacco products/devices (e.g., e-cigarettes, hookah, smokeless, dissolvable) in young adults (YA) to 6 years postsurgery. SETTING: Five academic medical centers. METHODS: In a prospective observational cohort series, 139 surgical (Mage = 16.9, Mbody mass index [BMI] = 51.5, 80% female, 66% white) and 83 nonsurgical comparisons (Mage = 16.1, MBMI = 44.9, 82% female, 54% white) completed assessments at presurgery/baseline and postsurgery years 2, 4, and 6 (year 6 [2014-2018]: surgical n = 123 [89%], Mage = 23.0, MBMI = 39.8; nonsurgical n = 63 [76%], Mage = 22.4, MBMI = 53.6). Lifetime and current (past 30 days) use were reported. RESULTS: Consistent with national YA trends (2014-2018), the most commonly used were (1) conventional cigarettes (30% surgical, 41% nonsurgical, nonsignificant [ns]); (2) marijuana (25% surgical, 27% nonsurgical, ns); and (3) e-cigarettes (12% surgical, 10% nonsurgical). A sizable minority (26% surgical, 18% nonsurgical) used one or more alternate tobacco product/device. Many YA reported persistent and/or heavy use (e.g., >50% marijuana at year 6 and year 2 or 4; ≈50% ≥.5 pack/d of cigarettes), suggesting more established (versus intermittent) health risk behaviors. For the surgical group at year 6, current tobacco product/device use was associated with lower BMI (P < .001) and greater percent weight loss (P = .002). CONCLUSIONS: Pediatric MBS demonstrates promise in lowering risks for adult chronic disease, which may be diminished by age-typical health risk behaviors. Developmentally salient and holistic pediatric postoperative care guidelines are needed.

Does age matter? Cardiopulmonary profiles of adolescents versus adults with pectus excavatum presenting for surgical evaluation.

PURPOSE: We sought to analyze differences in presentation and cardiopulmonary function between those referred for surgical consultation as adolescents (11-17 years) versus adults (18 + years). METHODS: Presenting symptoms, past medical history, and results from cardiac MRI (CMR), pulmonary function testing (PFT), and cardiopulmonary exercise testing (CPET) were reviewed in 329 patients evaluated preoperatively between 2015 and 2018. Adjusted regression modeling was used to measure associations between pectus indices and clinical endpoints of cardiopulmonary function. RESULTS: Our sample included 276 adolescents and 53 adults. Adults presented more frequently with chest pain (57% vs. 38%, p = 0.01), shortness of breath (76% vs. 59%, p = 0.02), palpitations (21% vs. 11%, p = 0.04), and exercise intolerance (76% vs. 59%, p = 0.02). Their Haller indices (5.2 [4.2, 7.0] vs. 4.7 [4.0, 5.7], p = 0.05) and cardiac asymmetry (1.8 [0.5] vs. 1.6 [0.5], p = 0.02) were also higher. In continuous outcome analysis, adolescents had higher FEV1/FVC on PFT and higher work on CPET (p < 0.01). CONCLUSIONS: Adults with pectus excavatum were more symptomatic than adolescents with deeper, more asymmetric deformities, decreased FEV1/FVC and exercise capacity. These findings may support earlier versus later repair to prevent age-related decline. Further studies are warranted.

Psychosocial predictors of problematic eating in young adults who underwent adolescent bariatric surgery.

Introduction: This study examined problematic eating and eating-related psychopathology among young adults who underwent adolescent bariatric surgery including concurrent and prospective associations with psychosocial factors and weight change. Methods: VIEW point is a 6-year follow-up study within a prospective observational study series observing adolescents with severe obesity who had bariatric surgery (n = 139) or who presented to nonsurgical lifestyle modification programs (n = 83). Participants completed height/weight measurements, questionnaires, and diagnostic interviews. Regression analyses compared problematic eating across groups and examined Year 6 correlates (i.e., psychosocial factors and weight change) and baseline predictors (i.e., psychosocial factors) of eating-related psychopathology. Results: Compared to the nonsurgical group, the surgical group reported lower eating-related psychopathology, objective binge eating, and grazing at Year 6. While chewing/spitting out and vomiting for weight/shape-related reasons were very infrequent for the surgical group, self-induced vomiting for other reasons (e.g., avoid plugging) was more common. For the surgical group, lower self-worth, greater internalizing symptoms, and higher weight-related teasing in adolescence predicted increased eating-related psychopathology in young adulthood. Year 6 eating-related psychopathology was concurrently associated with lower percent weight loss for the surgical group and greater percent weight gain for the nonsurgical group. Conclusion: Undergoing adolescent bariatric surgery appears to afford benefit for problematic eating and eating-related psychopathology. Current findings suggest that the clinical intervention related to problematic eating and associated psychosocial concerns may be needed for young adults with obesity, regardless of surgical status.

The Severity of Pectus Excavatum Defect Is Associated With Impaired Cardiopulmonary Function.

BACKGROUND: Repair of pectus excavatum has cosmetic benefits, but the physiologic impact remains controversial. The aim of this study was to characterize the relationship between the degree of pectus excavatum and cardiopulmonary dysfunction seen on cardiac magnetic resonance (CMR) imaging, cardiopulmonary exercise testing (CPET), and pulmonary function testing (PFT). METHODS: A single-center analysis of CMR, CPET, and PFT was conducted. Regression models evaluated relationships between pectus indices and the clinical end points of cardiopulmonary function. RESULTS: Data from 345 CMRs, 261 CPETs, and 281 PFTs were analyzed. Patients were a mean age of 15.2 ± 4 years, and 81% were aged <18 years. The right ventricular ejection fraction (RVEF) was <0.50 in 16% of patients, left ventricular ejection fraction (LVEF) was <0.55 in 22%, RVEF Z-score was < -2 in 32%, and the LVEF Z-score was < -2 in 18%. CPET revealed 33% of patients had reduced aerobic fitness. PFT results were abnormal in 23.1% of patients. Adjusted analyses revealed the Haller index had significant (P < .05) inverse associations with RVEF and LVEF. CONCLUSIONS: The severity of pectus excavatum is associated with ventricular systolic dysfunction. Pectus excavatum impacts right and left ventricular systolic function and can also impact exercise tolerance. The Haller index and correction index may be the most useful predictors of impairment.

Effect of intraoperative fluid type on postoperative systemic inflammatory response and end organ dysfunction following total pancreatectomy with islet autotransplantation in children.

PURPOSE: To evaluate the effect of intraoperative fluid type [half normal saline (0.45NS) or lactated Ringer's solution (LR)] on the risk of systemic inflammatory response syndrome (SIRS) and acute kidney injury after total pancreatectomy with islet autotransplantation in children. METHODS: Retrospective review where demographics, operative details, systemic inflammatory response, and evaluation for end organ dysfunction over the first 5 postoperative days was obtained. Mixed effects Poisson regression compared risk of SIRS and acute kidney injury by intraoperative fluid type. RESULTS: Forty three patients were included with no difference in demographic characteristics between groups. SIRS was observed in 95, 77, and 71% over post operative days 1, 3, and 5. Intraoperative fluid type was found to not be associated with postoperative SIRS (RR: 0.91, p = 0.23). However, female sex (RR: 1.30, p < 0.01), increased BMI (RR: 1.08, p < 0.01), and longer operative time (RR: 1.07, p < 0.01) were found to be factors that are associated with increased risk of postoperative SIRS. Intraoperative 0.45NS use was associated with increased acute kidney injury compared to LR on postoperative day 1 (52% vs 0%, p < 0.01), but not on postoperative days 3 or 5. CONCLUSION: Intraoperative fluid type (0.45NS vs LR) does not increase the risk of postoperative SIRS in children after TPIAT. Predictive factors that are associated with an increased risk of eliciting postoperative SIRS includes female sex, increased BMI, and longer operative times. LEVEL OF EVIDENCE: III.

Ventilatory limitations are not associated with dyspnea on exertion or reduced aerobic fitness in pectus excavatum.

Exercise intolerance and chest pain are common symptoms in patients with pectus excavatum. To assess if the anatomic extent of pectus deformities determined by the correction index (CI) is associated with a pulmonary impairment at rest and during exercise we performed a retrospective review on pectus patients in our center who completed a symptom questionnaire, cardiopulmonary exercise test (CPET), pulmonary function tests (PFT), and chest magnetic resonance imaging. Of 259 patients studied, dyspnea on exertion and chest pain was reported in 64% and 41%, respectively. Peak oxygen uptake (VO2 ) was reduced in 30% and classified as mild in two-thirds. A pulmonary limitation during exercise was identified in less than 3%. Ventilatory limitations on PFT was found in 26% and classified as mild in 85%. Obstruction was the most common abnormal pattern (11%). There were no differences between patients with normal or abnormal PFT patterns for the CI, VO2, or percentage reporting dyspnea or chest pain. Scatter plots demonstrated significant but weak inverse relationships between the CI and lung volumes at rest and during exercise. Multivariable linear regression modeling evaluating predictors of VO2 demonstrated positive associations with the forced expiratory volume at one second and a negative association with the CI. We conclude that resting PFT patterns have poor correlation with the anatomic extent of the pectus defect, symptomatology or aerobic fitness. Pulmonary limitations on CPET are uncommon and lung volumes during exercise are only minimally associated with the CI.

Indocyanine green is a sensitive adjunct in the identification and surgical management of local and metastatic hepatoblastoma.

BACKGROUND: Hepatoblastoma is the most common primary pediatric liver malignancy. Indocyanine green (ICG) has been described as an adjunct to resection in small series. Its utility remains undefined in larger cohorts. METHODS: Records for 29 patients diagnosed with hepatoblastoma who received ICG prior to surgical resection from 2017 to 2020 at a single institution were retrospectively reviewed. The primary outcome was correlation between intraoperative ICG-avidity and histologic presence of hepatoblastoma. A secondary outcome included the histologic margin designation for resected liver specimens. RESULTS: ICG sensitivity was 91% for 120 resected thoracic specimens from 21 patients. Specificity was 57%. In 10% of operations, HB-positive specimens were resected solely on ICG-avidity. In an additional 40% of cases, ICG assisted in localizing a preoperatively diagnosed lesion. ICG sensitivity during thoracotomy and thoracoscopic surgery was 95 and 74%, respectively; primary and relapsed disease demonstrated sensitivity of 94 and 73%, respectively. Sensitivity was 92% for 25 resected liver specimens from nine patients with all parenchymal margins grossly negative for disease. Four multifocal lesions were identified with two resected solely by ICG-avidity. CONCLUSIONS: ICG is a sensitive adjunct for identifying local and metastatic hepatoblastoma, including lesions not visualized on preoperative imaging, and delineating margins during liver resection. False positives limit specificity; however, there were no adverse outcomes from additional resections. We noted that thoracoscopic surgery can be completed safely in patients with less significant disease burden, and conversion to thoracotomy, if necessary, is straightforward.

Loss of Control Eating and Health Indicators Over 6 Years in Adolescents Undergoing Metabolic and Bariatric Surgery.

OBJECTIVES: The aim of this study was to assess associations between loss of control (LOC) eating and health outcomes among adolescents undergoing metabolic and bariatric surgery. METHODS: A total of 234 adolescents were studied before and up to 6 years after surgery in a prospective, observational cohort design. Adolescents provided self-reports of LOC eating, pain severity, sleep quality, polycystic ovary syndrome, gastroesophageal reflux disease, and medication usage and objective measures of fasting glucose, serum insulin, glycohemoglobin A1c , cholesterol, triglycerides, and blood pressure. χ2 tests, Wilcoxon rank sums, and generalized linear mixed models were used to assess concurrent and prospective associations between LOC eating and health indicators. RESULTS: LOC eating presented in 32.5% of adolescents before surgery and was positively associated with sleep disturbances and psychiatric medication usage. After surgery, LOC eating presented in 7.9% to 14.6% of participants and was correlated with improved low- and high-density lipoprotein cholesterol levels and greater back pain. LOC eating was inversely associated with low-density lipoprotein cholesterol at the next consecutive time point. CONCLUSIONS: LOC eating was unexpectedly associated with improved low- and high-density lipoprotein cholesterol in adolescents undergoing metabolic and bariatric surgery. Deleterious effects of LOC eating on obesity-related health conditions, aside from back pain, were not detected. Metabolic and other weight-independent health benefits of surgery may persist postoperatively despite LOC eating and associated weight regain.

Cigarette Use and Adolescent Metabolic and Bariatric Surgery.

OBJECTIVE: This study aimed to track conventional cigarette smoking behaviors and associated correlates in adolescents with severe obesity who did or did not undergo metabolic and bariatric surgery to 4 years after surgery/baseline. METHODS: Utilizing a prospective controlled design, surgical (n = 153; mean BMI = 52) and nonsurgical (n = 70; mean BMI = 47) groups that completed assessments before surgery/at baseline and at Years 2 and 4 post surgery (Year 4: n = 117 surgical [mean BMI = 38]; n = 56 nonsurgical [mean BMI = 48]) were compared. Separate logistic regression models tested correlates of Year 4 current smoking. RESULTS: More than half of participants (surgical: 55%; nonsurgical: 60%) had ever smoked a cigarette, with current smoking increasing with time. Groups did not differ in Year 4 current smoking (surgical: 23%; nonsurgical: 33%), with ≈ 50% meeting criteria for "heavy" smoking (≥ half pack/day) and ≈ 40% smoking their first cigarette before ninth grade. Factors associated with higher odds of Year 4 current smoking included dysregulation (P < 0.001), internalizing symptoms (P = 0.01), alcohol use (P = 0.04), caregiver smoking (P < 0.001), friend smoking (P = 0.001), and perceiving low harm (P = 0.02), plus greater percent weight loss (P = 0.03) in the surgical group. CONCLUSIONS: Smoking is a clinical health challenge for adolescents and young adults with severe obesity, including those who have undergone metabolic and bariatric surgery. Upstream identification, monitoring, and intervention to prevent smoking uptake and escalation in youth with obesity across settings should be prioritized.

Outcomes of Bariatric Surgery in Older Versus Younger Adolescents.

OBJECTIVES: In this report, we compare weight loss, comorbidity resolution, nutritional abnormalities, and quality of life between younger and older adolescents after metabolic and bariatric surgery. METHODS: From March 2007 to December 2011, 242 adolescents (≤19 years of age) who underwent bariatric surgery at 5 clinical centers in the United States were enrolled in the prospective, multicenter, long-term outcome study Teen-Longitudinal Assessment of Bariatric Surgery. Outcome data from younger (13-15 years; n = 66) and older (16-19 years; n = 162) study participants were compared. Outcomes included percent BMI change, comorbidity outcomes (hypertension, dyslipidemia, and type 2 diabetes mellitus), nutritional abnormalities, and quality of life over 5 years post surgery. RESULTS: Baseline characteristics, except for age, between the 2 cohorts were similar. No significant differences in frequency of remission of hypertension (P = .84) or dyslipidemia (P = .74) were observed between age groups. Remission of type 2 diabetes mellitus was high in both groups, although statistically higher in older adolescents (relative risk 0.86; P = .046). Weight loss and quality of life were similar in the 2 age groups. Younger adolescents were less likely to develop elevated transferrin (prevalence ratio 0.52; P = .048) and low vitamin D levels (prevalence ratio 0.8; P = .034). CONCLUSIONS: The differences in outcome of metabolic and bariatric surgery between younger and older adolescents were few. These data suggest that younger adolescents with severe obesity should not be denied consideration for surgical therapy on the basis of age alone and that providers should consider adolescents of all ages for surgical therapy for obesity when clinically indicated.

Influence of Weight Loss on Obesity-Associated Complications After Metabolic and Bariatric Surgery in Adolescents.

OBJECTIVE: Following metabolic and bariatric surgery (MBS), most adolescents experience weight loss and improvement of many obesity-associated complications (OACs). The relationship between weight loss and remission of OACs after MBS in adolescents has not been well described. METHODS: The Teen Longitudinal Assessment of Bariatric Surgery (Teen-LABS) is a multi-institutional prospective observational study of adolescents who underwent MBS between 2007 and 2012. Lower-weight-loss responders (LWLRs) were defined as having <20% total body weight loss (TBWL) and higher-weight-loss responders (HWLRs) were defined as having ≥20% TBWL at 5 years after MBS. The prevalence of OACs was compared at baseline and 5 years after MBS. RESULTS: Both LWLRs (n = 114) and HWLRs (n = 78) lost significant weight within the first year following MBS; however, the TBWL at 5 years for the LWLRs was 8.6% ± 9.5% compared with 33.8% ± 9.2% for the HWLRs. Those in the HWLR group were more likely to experience durable remission of composite dyslipidemia at 5 years, whereas there were no differences between groups in remission rates of all other OACs. CONCLUSIONS: Greater weight loss after MBS in adolescents was associated with greater remission of composite dyslipidemia; however, remission of other OACs was not dependent on major sustained weight loss.

The chest wall gender divide: females have better cardiopulmonary function and exercise tolerance despite worse deformity in pectus excavatum.

PURPOSE: Pectus excavatum (PE) is a chest wall deformity of variable severity and symptomatology. Existing female-specific literature highlights breast asymmetry and cosmetic reconstruction. We sought to evaluate gender differences in cardiopulmonary function. METHODS: Cardiac MRIs, pulmonary function tests (PFTs), and cardiopulmonary exercise tests (CPETs) were reviewed in 345 patients undergoing preoperative evaluation for PE. Regression modeling was used to evaluate associations between gender and clinical endpoints of cardiopulmonary function. RESULTS: Mean age was 15.2 years, 19% were female, 98% were white. Pectus indices included median Haller Index (HI) of 4.8, mean depression index (DI) of 0.63, correction index (CI) of 33.6%, and Cardiac Compression Index (CCI) of 2.79. Cardiac assessment revealed decreased right and left ventricular ejection fraction (RVEF, LVEF) in 16% and 22% of patients, respectively. PFTs and CPETs were abnormal in ~ 30% of patients. While females had deeper PE deformities-represented by higher pectus indices-they had superior function with higher RVEF, LVEF Z-scores, FEV1, VO2 max, O2 pulse, work, and breathing reserve (p < 0.05). CONCLUSION: Despite worse PE deformity and symptomatology, females had a better cardiopulmonary function and exercise tolerance than males. Further research is needed to assess the precise mechanisms of this phenomenon and postoperative outcomes in this population.

Natural Course of Pediatric Portal Hypertension.

The etiology of portal hypertension (pHTN) in children differs from that of adults and may require different management strategies. We set out to review the etiology, management, and natural history of pHTN at a pediatric liver center. From 2008 to 2018, 151 children and adolescents with pHTN were identified at a free-standing children's hospital. Patients were stratified by etiology of pHTN (intrahepatic disease [IH], defined as cholestatic disease and fibrotic or hepatocellular disease; extrahepatic disease [EH], defined as hepatic vein obstruction and prehepatic pHTN). Patients with EH were more likely to undergo an esophagoduodenscopy for a suspected gastrointestinal bleed (77% vs. 41%; P < 0.01). Surgical interventions differed based on etiology (P < 0.01), with IH more likely resulting in a transplant only (65%) and EH more likely to result in a shunt only (43%); 30% of patients with IH and 47% of patients with EH did not undergo an intervention for pHTN. Kaplan-Meier analysis revealed a significant increase in mortality in the group that received no intervention compared to shunt, transplant, or both and lower mortality in patients with prehepatic pHTN compared to other etiologies (P < 0.01 each). Multivariate analysis revealed increased odds of mortality in patients with refractory ascites (odds ratio [OR], 4.34; 95% confidence interval [CI], 1.00, 18.88; P = 0.05) and growth failure (OR, 13.49; 95% CI, 3.07, 58.99; P < 0.01). Conclusion: In this single institution study, patients with prehepatic pHTN had better survival and those who received no intervention had higher mortality than those who received an intervention. Early referral to specialized centers with experience managing these complex disease processes may allow for improved risk stratification and early intervention to improve outcomes.

Excess skin problems among adolescents after bariatric surgery.

BACKGROUND: Bariatric surgery results in significant and durable weight loss and improved health in severely obese adolescents. An important adverse consequence of the massive weight loss after bariatric surgery is excess skin and soft tissue. The prevalence and clinical characteristics of excess skin-related symptoms have been described in adults undergoing bariatric surgery but not in adolescents. Although the higher skin elasticity of adolescents may result in fewer excess skin problems compared with adults, this hypothesis remains untested. OBJECTIVES: The purpose of the present study was to describe the natural history of excess skin and its associated complications among severely obese adolescents undergoing bariatric surgery. SETTING: University Hospitals, United States. METHODS: We evaluated data from the Teen-Longitudinal Assessment of Bariatric Surgery cohort, a prospective, multiinstitutional study of adolescents (13-19 yr) undergoing bariatric surgery. Abdominal pannus severity (graded 0-5) and excess skin symptoms were evaluated preoperatively and for the first 5 years after bariatric surgery. RESULTS: Among the 217 study participants, 198 (90%) had an abdominal pannus and 16 (7%) reported pannus-related symptoms at the time of bariatric surgery. Preoperative symptoms included intertriginous infections (n = 12, 75%), recurrent cellulitis (n = 5, 31%), and superficial cutaneous ulcerations (n = 1, 6%). Participants with a higher pannus grade preoperatively experienced both a greater reduction in pannus severity (P < .0001) and a higher incidence of pannus-related symptoms (P = .002) postoperatively. Changes in pannus severity occurred during the first 24 months after bariatric surgery; mean pannus severity remained unchanged beyond 24 months. CONCLUSIONS: Severely obese adolescents who undergo bariatric surgery often present with an abdominal pannus at the time of surgery with associated symptoms. Higher preoperative pannus grade is associated with more pannus related symptoms after surgery. Counseling about need for body contouring surgery should be considered in this group.