Does the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program bariatric risk/benefit calculator hold its weight? An assessment of its accuracy.

BACKGROUND: Bariatric clinical calculators have already been implemented in clinical practice to provide objective predictions of complications and outcomes. The Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program (MBSAQIP) Surgical Risk/Benefit Calculator is the most comprehensive risk calculator in bariatric surgery. OBJECTIVES: Evaluate the accuracy of the calculator predictions regarding the 30-day complication risk, 1-year weight loss outcomes, and comorbidity resolution. SETTING: MBSAQIP-accredited center. METHODS: All adult patients who underwent primary laparoscopic Roux-en-Y gastric bypass (RYGB) or sleeve gastrectomy at our institution between 2012 and 2019 were included. Baseline characteristics were used to generate the individualized outcome predictions for each patient through the bariatric risk calculator and were compared to actual patient outcomes. Statistical analysis was performed using c-statistics, linear regression models, and McNemmar chi-square test. RESULTS: One thousand four hundred fifty-three patients with a median age of 45 (37, 55) and consisting of 80.1% females were included in the study. The c-statistics for the complications and comorbidity resolution ranged from .533 for obstructive sleep apnea remission to .675 for 30-day reoperation. The number of comorbidity resolutions predicted by the calculator was significantly higher than the actual remissions for diabetes, hyperlipidemia, hypertension and obstructive sleep apnea (P < .001). On average, the calculator body mass index (BMI) predictions deviated from the observed BMI measurement by 3.24 kg/m2. The RYGB procedure (Coef -.89; P = .005) and preoperative BMI (Coef -.4; P = .012) were risk factors associated with larger absolute difference between the predicted and observed BMI. CONCLUSIONS: The MBSAQIP Surgical Risk/Benefit Calculator prediction models for 1-year BMI, 30-day reoperation, and reintervention risks were fairly well calibrated with an acceptable level of discrimination except for obstructive sleep apnea remission. The 1-year BMI estimations were less accurate for RYGB patients and cases with very high or low preoperative BMI measurements. Therefore, the bariatric risk calculator constitutes a helpful tool that has a place in preoperative counseling.

Circuit change in neonatal and pediatric extracorporeal membrane oxygenation is associated with adverse outcomes.

INTRODUCTION: Extracorporeal membrane oxygenation (ECMO) circuits may be changed during the run for multiple reasons; however, these circuit changes may be associated with adverse events. Predictors for undergoing a circuit change (CC) and their outcomes remain unclear. We hypothesized that neonatal and pediatric CC correlates with increased morbidity and mortality. METHODS: Pediatric and neonatal patients who underwent one ECMO run lasting <30 days at a tertiary children's hospital from 2011 through 2017 were retrospectively reviewed. Bivariate regression analysis evaluated factors associated with ECMO mortality and morbidity. LASSO logistic regression models identified independent risk factors for undergoing a CC. p < .05 was significant. RESULTS: One hundred 85 patients were included; 137 (74%) underwent no CC, while 48 (26%) underwent one or more. Undergoing a CC was associated with longer ECMO duration (p < .001), higher blood transfusion volumes (p < .001), increased hemorrhagic complications (p < .001) and increased mortality (p = .002). Increased platelet (p = .001) and FFP (p = .016) transfusion volumes at any time while on ECMO were independent factors associated with undergoing a CC. CONCLUSIONS: Changing the circuit during the ECMO run occurs frequently and may be associated with poorer outcomes. Understanding the outcomes and predictors for CC may guide management protocols for more efficient circuit changes given its important association with overall outcomes.

Impact of Home Monitoring Program and Early Gastrostomy Tube on Interstage Outcomes following Stage 1 Norwood Palliation.

Nutritional management and home monitoring programs (HMPs) may be beneficial for improving interstage morbidity and mortality following stage I Norwood palliation (S1P) for hypoplastic left heart syndrome (HLHS). We recognized an increasing trend towards early feeding gastrostomy tube (GT) placement prior to discharge in our institution, and we aimed to investigate the effect of HMPs and GTs on interstage mortality and growth parameters. Single-institutional review at a tertiary referral center between 2008 and 2018. Individual patient charts were reviewed in the electronic medical record. Those listed for transplant or hybrid procedures were excluded. Baseline demographics, operative details, and interstage outcomes were analyzed in GT and non-GT patients (nGT). Our HMP was instituted in 2009, and patients were analyzed by era: I (early, 2008-2012), II (intermediate, 2013-2016), and III (recent, 2017-2018). 79 patients were included in the study: 29 nGTs and 50 GTs. GTs had higher number of preoperative risk factors more S1P complications, longer ventilation times, longer lengths of stay, and shorter times to readmission. There were no differences in interstage mortality or overall mortality between groups. There was one readmission for a GT-related issue with no periprocedural complications in the group. Weight gain doubled after GT placement in the interstage period while waiting periods for placement decreased across Eras. HMPs and early GTs, especially for patients with high-risk features, provide a dependable mode of nutritional support to optimize somatic growth following S1P.

Surgical History and Outcomes in Trisomy 13 and 18: A Thirty-year Review.

BACKGROUND: Patients with Trisomy 13(T13) and 18(T18) have many comorbidities that may require surgical intervention. However, surgical care and outcomes are not well described, making patient selection and family counseling difficult. Here the surgical history and outcomes of T13/ T18 patients are explored. METHODS: A retrospective review of patients with T13 or T18 born between 1990 and 2020 and cared for at a tertiary children's hospital (Riley Hospital for Children, Indianapolis IN) was conducted, excluding those with insufficient records. Primary outcomes of interest were rates of mortality overall and after surgery. Factors that could predict mortality outcomes were also assessed. RESULTS: One-hundred-seventeen patients were included, with 65% T18 and 35% T13. More than half of patients(65%) had four or more comorbidities. Most deaths occurred by three months at median 42.0 days. Variants of classic trisomies (mosaicism, translocation, partial duplication; p = 0.001), higher birth weight(p = 0.002), and higher gestational age(p = 0.01) were associated with lower overall mortality, while cardiac(p = 0.002) disease was associated with higher mortality. Over half(n = 64) underwent surgery at median age 65 days at time of first procedure. The most common surgical procedures were general surgical. Median survival times were longer in surgical rather than nonsurgical patients(p<0.001). Variant trisomy genetics(p = 0.002) was associated with lower mortality after surgery, while general surgical comorbidities(p = 0.02), particularly tracheoesophageal fistula/esophageal atresia(p = 0.02), were associated with increased mortality after surgery. CONCLUSIONS: Trisomy 13 and 18 patients have vast surgical needs. Variant trisomy was associated with lower mortality after surgery while general surgical comorbidities were associated with increased mortality after surgery. Those who survived to undergo surgery survived longer overall. LEVEL OF EVIDENCE: III.

Neurolysis for analgesia following pectus repair in a national cohort.

INTRODUCTION: Pectus excavatum and pectus carinatum are the most common chest wall deformities of childhood. Surgical repair can be complicated by post-operative analgesic challenges. Thoracic epidural analgesia, patient-controlled analgesia, and multimodal pain control are among the most common strategies. We sought to define the current utilization of intraoperative thoracic neurolysis, hypothesizing that this would minimize length of stay (LOS) and post-operative narcotic use with relatively higher proportion of non-narcotic post-operative analgesia. METHODS: We performed a retrospective review of the Pediatric Health Information System (PHIS) database between 2017 and 2020. We first identified patients who underwent a pectus repair via ICD-10-PCS codes. We used ICD-10-PCS codes 01580ZZ and 01584ZZ to identify those patients who underwent concomitant thoracic neurolysis. Statistical analyses were performed using R; p value less than 0.05 was considered significant. RESULTS: We identified 2979 patients who underwent a pectus repair. 184 underwent a concomitant thoracic nerve destruction procedure (6.7%); 13 were performed in 2017 (2.01%), 76 in 2018 (10.7%), and 84 in 2019 (9.6%). LOS was shorter in those patients who underwent neurolysis (mean=2.55 vs 3.73 days, SD=1.33 vs 1.78 days, p<0.001). There were fewer post-operative ICU admissions in neurolysis patients (3/184 vs. 193/2795, p = 0.003). The cost of procedures that included a neurolysis were higher, though not significantly so (mean=$24,885.64 vs $22,200.59). CONCLUSION: Thoracic neurolysis may be a useful analgesic strategy, expediating post-operative discharge and potentially obviating the need for intensive care. Further larger-scale prospective trials should be considered to further elucidate the role of this analgesia method. LEVEL OF EVIDENCE: Level III.

A comparison of laparoscopic and robotic ergonomic risk.

INTRODUCTION: Work related injuries in minimally invasive surgery (MIS) are common because of the strains placed on the surgeon's or assistant's body. The objective of this study was to compare specific ergonomic risks among surgeons and surgical trainees performing robotic and laparoscopic procedures. MATERIALS AND METHODS: Ergonomic data and discomfort questionnaires were recorded from surgeons and trainees (fellows/residents) for both robotic and laparoscopic procedures. Perceived discomfort questionnaires were recorded pre/postoperatively. Intraoperatively, biomechanical loads were captured using motion tracking sensors and electromyography (EMG) sensors. Perceived discomfort, body position and muscle activity were compared between robotic and laparoscopic procedures using a linear regression model. RESULTS: Twenty surgeons and surgical trainees performed 29 robotic and 48 laparoscopic procedures. Postoperatively, increases in right finger numbness and right shoulder stiffness and surgeon irritability were noted after laparoscopy and increased back stiffness after robotic surgery. Further, the laparoscopic group saw increases in right hand/shoulder pain (OR 0.8; p = 0.032) and left hand/shoulder pain (0.22; p < 0.001) compared to robotic. Right deltoid and trapezius excessive muscle activity were significantly higher in laparoscopic operations compared to robotic. Demanding and static positioning was similar between the two groups except there was significantly more static neck position required for robotic operations. CONCLUSION: Robotic assisted surgeries led to lower postoperative discomfort and muscle strain in both upper extremities, particularly dominant side of the surgeon, but increased static neck positioning with subjective back stiffness compared with laparoscopy. These recognized ergonomic differences between the two platforms can be used to raise surgeon awareness of their intraoperative posture and to develop targeted physical and occupational therapy interventions to decrease surgeon WMSDs and increase surgeon longevity.

Early Surgery for Spontaneous Pneumothorax Associated With Reduced Recurrence, Resource Utilization.

BACKGROUND: Primary spontaneous pneumothorax (PSP) occurs in adolescent patients and frequently recurs. Reliable predictors of recurrence may identify candidates for early VATS (video-assisted thoracoscopic surgery). We hypothesize that demographic and clinical factors are associated with recurrence, and that earlier surgery is associated with decreased recurrence and resource utilization. METHODS: Patients between ages 5 and 21 treated for PSP at a single center from January 1, 2008 to June 30th, 2019 were identified. Presenting demographics, clinical management, and outcomes were analyzed, with focus on the first admission for PSP. "Early VATS" was defined as VATS during the first admission, and "late VATS" as VATS at any point after the first admission for a given side. RESULTS: Thirty-nine patients met inclusion criteria, with a total of 82 pneumothoraces. Following initial encounter, 48.7% had ipsilateral recurrence. Early VATS was associated with less recurrence (P = 0.002). No other predictive factors were associated with ipsilateral recurrence. Early VATS was associated with reduced overall recurrence (P < 0.001), admissions (P < 0.001), cumulative chest x-rays (P = 0.043), and cumulative hospital length of stay (P = 0.022) compared to late VATS. CONCLUSIONS: While predictors of recurrence are not apparent at initial admission, early VATS is associated with decreased recurrence and resource utilization.

Does the advanced training in laparoscopic suturing enhance laparoscopic suturing skill beyond fundamentals of laparoscopic surgery?

BACKGROUND: Laparoscopic suturing is associated with a steep learning curve. Hence, many general surgery graduate residents entering fellowship have reportedly not been able to proficiently suture laparoscopically despite achieving Fundamentals of Laparoscopic Surgery certification. To address this deficiency, the Advanced Training in Laparoscopic Suturing curriculum was developed. This study aimed to compare the effectiveness of the Advanced Training in Laparoscopic Suturing curriculum in improving laparoscopic suturing skills compared with Fundamentals of Laparoscopic Surgery training. METHODS: Novices were enrolled in a prospective randomized controlled study. All novices followed proficiency-based training on Fundamentals of Laparoscopic Surgery peg-transfer and intracorporeal suturing. Students were then stratified based on their peg-transfer performance and randomized into an Advanced Training in Laparoscopic Suturing or Fundamentals of Laparoscopic Surgery group. The Advanced Training in Laparoscopic Suturing group trained on 3 of the 6 Advanced Training in Laparoscopic Suturing tasks (needle handling, offset forehand suturing, confined space suturing), while the Fundamentals of Laparoscopic Surgery group was assigned more stringent suturing performance goals. Each group trained for an additional 6 hours, after which the laparoscopic suturing performance of the 2 groups was compared on a Nissen fundoplication porcine model. RESULTS: Thirty-nine medical students were enrolled in the study; 17 (11 males and 6 females) completed the study protocol (44%). Controlling for confounders including the student suturing performance at the end of stage-1 training, the Advanced Training in Laparoscopic Suturing group at the porcine model was significantly faster/safer (coefficient = 102.7, P = .037), and more skilled (coefficient = 19.1, P = .048) compared with the Fundamentals of Laparoscopic Surgery group. CONCLUSION: Compared with Fundamentals of Laparoscopic Surgery training alone the Advanced Training in Laparoscopic Suturing curriculum further enhances the laparoscopic suturing skill of novices. These findings support incorporating Advanced Training in Laparoscopic Suturing into existing skills curricula.

Preoperative stroke before cardiac surgery does not increase risk of postoperative stroke.

The optimal time when surgery can be safely performed after stroke is unknown. The purpose of this study was to investigate how cardiac surgery timing after stroke impacts postoperative outcomes between 2011-2017 were reviewed. Variables were extracted from the institutional Society of Thoracic Surgeons database, statewide patient registry, and medical records. Subjects were classified based upon presence of endocarditis and further grouped by timing of preoperative stroke relative to cardiac surgery: Recent (stroke within two weeks before surgery), Intermediate (between two and six weeks before), and Remote (greater than six weeks before). Postoperative outcomes were compared amongst groups. 157 patients were included: 54 in endocarditis and 103 in non-endocarditis, with 47 in Recent, 26 in Intermediate, and 84 in Remote. 30-day mortality and postoperative stroke rate were similar across the three subgroups for both endocarditis and non-endocarditis. Of patients with postoperative stroke, mortality was 30% (95% CI 4.6-66). Timing of cardiac surgery after stroke occurrence does not seem to affect postoperative stroke or mortality. If postoperative stroke does occur, subsequent stroke-related mortality is high.

Partial splenectomy in children: Long-term reoperative outcomes☆.

PURPOSE: Partial, or subtotal, splenectomy (PS) has become an accepted alternative to total splenectomy (TS) for management of hematologic disorders in children, but little is known about its long-term outcomes. Here, we present our institutional experience with partial splenectomy, to determine rate of subsequent TS or cholecystectomy and identify if any factors affected this need. METHODS: All patients who underwent partial splenectomy at a single tertiary children's hospital were retrospectively reviewed from 2002 through 2019 after IRB approval. Primary outcome of interest was rate of reoperation to completion splenectomy (CS) and rate of cholecystectomy. Secondary outcome were positive predictor(s) for these subsequent procedures. RESULTS: Twenty-four patients underwent PS, at median age 6.0 years, with preoperative spleen size of 12.7 cm by ultrasound. At median follow up time of 8.0 years, 29% of all patients and 24% of hereditary spherocytosis (HS) patients underwent completion splenectomy at median 34 months and 45 months, respectively. Amongst HS patients who did not have a cholecystectomy with or prior to PS, 39% underwent a delayed cholecystectomy following PS. There were no significant differences in age at index procedure, preoperative splenic volume, weight of splenic specimen removed, transfusion requirements, preoperative or postoperative hematologic parameters (including hemoglobin, hematocrit, total bilirubin, and reticulocyte count) amongst patients of all diagnoses and HS only who underwent PS alone compared to those who went on to CS. There were no cases of OPSS or deaths. CONCLUSION: Partial splenectomy is a safe alternative to total splenectomy in children with hematologic disease with theoretical decreased susceptibility to OPSS. However, families should be counseled of a 29% chance of reoperation to completion splenectomy, and, in HS patients, a 39% chance of delayed cholecystectomy if not performed prior to or with PS. Further studies are needed to understand predictors of these outcomes.

Insurance Type and Marital Status Impact Hospital Length of Stay After Pancreatoduodenectomy.

BACKGROUND: Recognition of the impact of social determinants on health care and surgical outcomes is imperative to improve patient care. This study aims to examine the impact social determinants have on hospital length of stay (LOS) after pancreatoduodenectomy (PD). METHODS: Retrospective review of a prospective American College of Surgeons-National Surgical Quality Improvement Program database identified patients who underwent PD from 2013 to 2018. Patients were categorized by insurance type (public/private/multiple), and electronic medical record review was performed to obtain distance from home, marital status, and race. Public insurance included Medicare and Medicaid; multiple types were defined as public insurance supplemented by a private insurance. Univariable analysis was used to identify potential confounders. Significant differences (P < 0.05) were controlled for using multivariable regression models to examine the effect of variables on LOS. RESULTS: About 813 PDs were included (n = 341 public; n = 238 private; and n = 234 multiple). Patients with public insurance had significantly longer LOS than patients with private on univariate (P < 0.001) and multivariable analyses (P = 0.021) (8 versus 7 d). Patients with multiple insurance types showed significantly increased LOS compared with patients with private on univariable (P < 0.001) and multivariable analyses (P = 0.006) (8 versus 7 d). Single patients had significantly longer LOS compared with married patients on univariable (P = 0.012) and multivariable analyses (P = 0.005) (8 versus 7 d). Distance from home, race, gender, or age did not have a significant impact on LOS. CONCLUSIONS: Single patients and patients with public or multiple insurance types are more likely to have longer hospital LOS after PD. These findings will enable physicians to identify patients at risk and target them for enhanced recovery programming.

Is resident assistance equivalent to fellows during hepatectomy?

OBJECTIVE: Hepatectomy is a complex operative procedure frequently performed at academic institutions with trainee participation. The aim of this study was to determine the effect of assistant's training level on outcomes following hepatectomy. METHODS: A retrospective review of a prospective, single-institution ACS-NSQIP database was performed for patients that underwent hepatectomy (2013-2016). Patients were divided by trainee assistant level: hepatopancreatobiliary (HPB) fellow versus general surgery resident (PGY 4-5). Demographic, perioperative, and 30-day outcome variables were compared using Chi-Square/Fisher's exact, Mann-Whitney U test, and multivariable regression. Cases involving a senior-level general surgery resident or HPB fellow as first assistant were included (n = 352). Those with a second attending, junior-level resident, or no documented assistant were excluded (n = 39). RESULTS: Patients undergoing hepatectomy with an HPB fellow as primary assistant had more frequent preoperative biliary stenting, longer operative time, and more concomitant procedures including biliary reconstruction, resulting in a higher rate of post-hepatectomy liver failure (PHLF) (15% vs. 8%, P = 0.044). However, trainee level did not impact PHLF on multivariable analysis (OR 0.60, 95% CI [0.29-1.25], P = 0.173). Fellows assisted with proportionally more major hepatectomies (45% vs. 31%; P = 0.010) and resections for hepatobiliary cancers (31% vs. 19%, P = 0.014). On stratified analysis of major and minor hepatectomies, outcomes were similar between trainee groups. CONCLUSION: Fellows performed higher complexity cases with longer operative time. Despite these differences, outcomes were similar regardless of assistant training level. Resident and HPB fellow participation in operations requiring liver resection provide comparable quality of care.

Preoperative Nomogram Predicts Non-home Discharge in Patients Undergoing Pancreatoduodenectomy.

BACKGROUND: In patients undergoing pancreatoduodenectomy, non-home discharge is common and often results in an unnecessary delay in hospital discharge. This study aimed to develop and validate a preoperative prediction model to identify patients with a high likelihood of non-home discharge following pancreatoduodenectomy. METHODS: Patients undergoing pancreatoduodenectomy from 2013 to 2018 were identified using an institutional database. Patients were categorized according to discharge location (home vs. non-home). Preoperative risk factors, including social determinants of health associated with non-home discharge, were identified using Pearson's chi-squared test and then included in a multiple logistic regression model. A training cohort composed of 80% of the sampled patients was used to create the prediction model, and validation carried out using the remaining 20%. Statistical significance was defined as P < 0.05. RESULTS: Seven hundred sixty-six pancreatoduodenectomy patients met the study criteria for inclusion in the analysis (non-home, 126; home, 640). Independent predictors of non-home discharge on multivariable analysis were age, marital status, mental health diagnosis, functional health status, dyspnea, and chronic obstructive pulmonary disease. The prediction model was then used to generate a nomogram to predict likelihood of non-home discharge. The training and validation cohorts demonstrated comparable performances with an identical area under the curve (0.81) and an accuracy of 84%. CONCLUSION: A prediction model to reliably assess the likelihood of non-home discharge after pancreatoduodenectomy was developed and validated in the present study.

An analysis of the ergonomic risk of surgical trainees and experienced surgeons during laparoscopic procedures.

BACKGROUND: Work-related musculoskeletal injuries have been increasingly recognized to affect surgeons. It is unknown whether such injuries also affect surgical trainees. The purpose of this study was to assess the ergonomic risk of surgical trainees as compared with that of experienced surgeons. METHODS: Ergonomic data were recorded from 9 surgeons and 11 trainees. Biomechanical loads during surgery were assessed using motion tracking sensors and electromyography sensors. Demanding and static positions of the trunk, neck, right/left shoulder, as well as activity from the deltoid and trapezius muscles bilaterally were recorded. In addition, participants reported their perceived discomfort on validated questionnaires. RESULTS: A total of 87 laparoscopic general surgery cases (48 attendings and 39 trainees) were observed. Both trainees and attendings spent a similarly high percentage of each case in static (>60%) and demanding positions (>5%). Even though residents reported overall more discomfort, all participants shared similar ergonomic risk with the exception of trainees' trunk being more static (odds ratio: -11.42, P = .006). CONCLUSION: Surgeons are prone to ergonomic risk. Trainees are exposed to similar postural ergonomic risk as surgeons but report more discomfort and, given that musculoskeletal injuries are cumulative over time, the focus should be on interventions to reduce ergonomic risk in the operating room.

A Quantitative Global Proteomics Approach Identifies Candidate Urinary Biomarkers That Correlate With Intraductal Papillary Mucinous Neoplasm Dysplasia.

OBJECTIVES: A proteomic discovery study was performed to determine if urine possesses a unique biosignature that could form the basis for a noninvasive test able to predict intraductal papillary mucinous neoplasm (IPMN) dysplasia. METHODS: Urine was collected from patients undergoing surgery for IPMN (72 low/moderate, 27 high-grade/invasive). Quantitative mass spectrometry-based proteomics was performed. Proteins of interest were identified by differential expression analysis followed by principal component analysis. RESULTS: Proteomics identified greater than 4800 urinary proteins. Low/moderate and high-grade/invasive IPMN were distinguished by 188 proteins (P < 0.05). Following principal component analysis and heatmap visualization, vitamin D binding protein (DBP), apolipoprotein A1 (APOA1), and alpha-1 antitrypsin (A1AT) were selected. The proteomic abundance of DBP (median [interquartile range]) was significantly higher for high-grade/invasive than for low/moderate IPMN (219,735 [128,882-269,943] vs. 112,295 [77,905-180,773] normalized reporter ion intensity units; P = 0.001). Similarly, APOA1 was more abundant in the high-grade/invasive than low/moderate groups (235,420 [144,933-371,247] vs 150,095 [103,419-236,591]; P = 0.0007) as was A1AT (567,514 [358,544-774,801] vs 358,393 [260,850-477,882]; P = 0.0006). CONCLUSIONS: Urinary DBP, APOA1, and A1AT represent potential biomarker candidates that may provide a noninvasive means of predicting IPMN dysplastic grade.

Visceral artery pseudoaneurysm in necrotizing pancreatitis: incidence and outcomes.

Background: Visceral artery pseudoaneurysms (VA-PSA) occur in necrotizing pancreatitis; however, little is known about their natural history. This study sought to evaluate the incidence and outcomes of VA-PSA in a large cohort of patients with necrotizing pancreatitis. Methods: Data for patients with necrotizing pancreatitis who were treated between 2005 and 2017 at Indiana University Health University Hospital and who developed a VA-PSA were reviewed to assess incidence, presentation, treatment and outcomes. Results: Twenty-eight of 647 patients with necrotizing pancreatitis (4.3%) developed a VA-PSA between 2005 and 2017. The artery most commonly involved was the splenic artery (36%), followed by the gastroduodenal artery (24%). The most common presenting symptom was bloody drain output (32%), followed by incidental computed tomographic findings (21%). The median time from onset of necrotizing pancreatitis to diagnosis of a VA-PSA was 63.5 days (range 1-957 d). Twenty-five of the 28 patients who developed VA-PSA (89%) were successfully treated with percutaneous angioembolization. Three patients (11%) required surgery: 1 patient rebled following embolization and required operative management, and 2 underwent upfront operative management. The mortality rate attributable to hemorrhage from a VA-PSA in the setting of necrotizing pancreatitis was 14% (4 of 28 patients). Conclusion: In this study, VA-PSA occurred in 4.3% of patients with necrotizing pancreatitis. Percutaneous angioembolization effectively treated most cases; however, mortality from VA-PSA was high (14%). A high degree of clinical suspicion remains critical for early diagnosis of this potentially fatal problem.

Contexte: Les faux anévrismes des artères viscérales (FAAV) surviennent en présence d'une pancréatite nécrosante; on en sait cependant peu sur leur histoire naturelle. L'objectif de l'étude était d'évaluer l'incidence et les issues des FAAV dans une grande cohorte de patients atteints de pancréatite nécrosante. Méthodes: Nous avons examiné les données des patients atteints de pancréatite nécrosante traités entre 2005 et 2017 à l'Hôpital universitaire de l'Université de l'Indiana qui ont fait un FAAV afin d'évaluer l'incidence, les premiers signes, le traitement et les issues de cette affection. Résultats: Vingt-huit (4,3 %) des 647 patients atteints de pancréatite nécrosante inclus (2005­2017) ont fait un FAAV. L'artère la plus souvent touchée était l'artère splénique (36 %), suivie de l'artère gastroduodénale (24 %). Les premiers signes les plus courants étaient la présence de sang dans les liquides évacués par drainage (32 %), puis les résultats d'une tomodensitométrie effectuée pour une autre raison (21 %). Le délai médian entre l'apparition de la pancréatite nécrosante et le diagnostic de FAAV était de 63,5 jours (intervalle : 1 à 957 jours). Vingt-cinq des 28 patients ayant fait un FAAV (89 %) ont été traités avec succès par angioembolisation percutanée. Trois patients (11 %) ont dû être opérés : 2 dès le début, et le troisième parce qu'il a recommencé à saigner après l'embolisation. Le taux de mortalité par hémorragie due à un FAAV chez les personnes atteintes d'une pancréatite nécrosante était de 14 % (4 patients sur 28). Conclusion: Dans cette étude, 4,3 % des patients atteints de pancréatite nécrosante ont connu un FAAV. L'angioembolisation percutanée s'est avérée efficace dans la plupart des cas; cependant, la mortalité associée aux FAAV était élevée (14 %). Il est crucial de faire preuve d'une grande suspicion clinique afin de diagnostiquer tôt cette affection potentiellement mortelle.

Two open whipples a day: Excessive or efficient.

BACKGROUND: Demand for pancreatic surgery is rising, occasionally necessitating consecutive PDs to be performed by a single surgeon in the same workday. The safety of this practice is unknown. METHODS: Institutional prospective ACS-NSQIP data were reviewed for PDs (2013-2017). Instances where a single surgeon performed two PDs in the same day were a PD pair (PD1, PD2) and compared with univariable analysis. Paired vs. unpaired-PD matched analyses were performed. RESULTS: 661 PDs (25-PD pairs) were performed. PD1 and PD2 revealed similar infectious (12% vs16%), pulmonary (8% vs8%), cardiovascular (12% vs4%), and aggregate (24% vs24%) morbidity (P>0.05). Pancreatic fistula (B + C 0%), delayed gastric emptying (4% vs12%), hospital stay (9.3 vs8.8 days), and 30-day mortality (4% vs4%) were similar (P > 0.05). Matched outcomes were similar except higher cardiovascular morbidity for paired vs. unpaired PD (7% vs0%; P = 0.015). CONCLUSION: With proper patient selection, and in experienced hands at high-volume centers, two consecutive open PDs may be safely performed.

Performance of candidate urinary biomarkers for pancreatic cancer - Correlation with pancreatic cyst malignant progression?

BACKGROUND: Intraductal papillary mucinous neoplasms (IPMN) are precursors of pancreatic cancer. Potential biomarkers of IPMN progression have not been identified in urine. A few urinary biomarkers were reported to be predictive of pancreatic ductal adenocarcinoma (PDAC). Here, we seek to assess their ability to detect high-risk IPMN. METHODS: Urine was collected from patients undergoing pancreatic resection and healthy controls. TIMP-1(Tissue Inhibitor of Metalloproteinase-1), LYVE-1(Lymphatic Vessel Endothelial Receptor 1), and PGEM(Prostaglandin E Metabolite) levels were determined by ELISA and analyzed by Kruskal-Wallis. RESULTS: Median urinary TIMP-1 levels were significantly lower in healthy controls (n = 9; 0.32 ng/mg creatinine) compared to PDAC (n = 13; 1.95) but not significantly different between low/moderate-grade (n = 20; 0.71) and high-grade/invasive IPMN (n = 20; 1.12). No significant difference in urinary LYVE-1 was detected between IPMN low/moderate (n = 16; 0.37 ng/mg creatinine) and high/invasive grades (n = 21; 0.09). Urinary PGEM levels were not significantly different between groups. CONCLUSIONS: Urinary TIMP-1, LYVE-1, and PGEM do not correlate with malignant potential of pancreatic cysts.

Pancreatic Fluid Interleukin-1ß Complements Prostaglandin E2 and Serum Carbohydrate Antigen 19-9 in Prediction of Intraductal Papillary Mucinous Neoplasm Dysplasia.

OBJECTIVES: We sought to determine if interleukin (IL)-1ß and prostaglandin E2 (PGE2) (inflammatory mediators in pancreatic fluid) together with serum carbohydrate antigen (CA) 19-9 could better predict intraductal papillary mucinous neoplasm (IPMN) dysplasia than individual biomarkers alone. METHODS: Pancreatic cyst fluid (n = 92) collected via endoscopy or surgery (2003-2016) was analyzed for PGE2 and IL-1ß (enzyme-linked immunosorbent assay). Patients had surgical pathology-proven IPMN. Threshold values (PGE2 [>1100 pg/mL], IL-1ß [>20 pg/mL], and serum CA 19-9 [>36 U/mL]) were determined. RESULTS: Levels of IL-1ß were higher in high-grade dysplasia (HGD)/invasive-IPMN (n = 42) compared with low/moderate IPMN (n = 37) (median [range], 54.6 [0-2671] vs 5.9 [0-797] pg/mL; P < 0.001; area under curve [AUC], 0.766). Similarly, PGE2 was higher in HGD/invasive IPMN (n = 45) compared with low/moderate IPMN (n = 47) (median [range], 1790 [20-15,180] vs. 140 [10-14,630] pg/mL; P < 0.001; AUC, 0.748). Presence of elevated PGE2 and IL-1ß (AUC, 0.789) provided 89% specificity and 82% positive predictive value (PPV) for HGD/invasive IPMN. Elevated levels of all 3 provided 100% specificity and PPV for HGD/invasive IPMN. CONCLUSIONS: Cyst fluid PGE2, IL-1ß, and serum CA 19-9 in combination optimize specificity and PPV for HGD/invasive IPMN and may help build a panel of markers to predict IPMN dysplasia.

High Rates of Readmission in Necrotizing Pancreatitis: Natural History or Opportunity for Improvement?

BACKGROUND: Necrotizing pancreatitis (NP) is a complex and heterogeneous disease with a protracted disease course. Hospital readmission is extremely common; however, few data exist regarding the cause of readmission in NP. METHODS: A retrospective review of NP patients treated between 2005 and 2017 identified patients readmitted both locally and to our hospital. All patients with unplanned hospital readmissions were evaluated to determine the cause for readmission. Clinical and demographic factors of all patients were recorded. As appropriate, two independent group t tests and Pearson's correlation or Fisher's exact tests were performed to analyze the relationship between index admission clinical factors and readmission. p values of < 0.05 were accepted as statistically significant. RESULTS: Six hundred one NP patients were reviewed. Median age was 52 years (13-96). Median index admission length of stay was 19 days (2-176). The most common etiology was biliary (49.9%) followed by alcohol (20.0%). Unplanned readmission occurred in 432 patients (72%) accounting for a total of 971 unique readmissions (mean readmissions/patient, 2.3). The most common readmission indications were symptomatic necrosis requiring supportive care and/or intervention (31.2%), infected necrosis requiring antibiotics and/or intervention (26.6%), failure to thrive (9.7%), and non-necrosis infection (6.6%). Patients requiring readmission had increased incidence of index admission renal failure (21.3% vs. 14.2%, p = 0.05) and cardiovascular failure (12.5% vs. 4.7%, p = 0.01). DISCUSSION: Readmission in NP is extremely common. Significant portions of readmissions are a result of the disease natural history; however, a percentage of readmissions appear to be preventable. Patients with organ failure are at increased risk for unplanned readmission and will benefit from close follow-up.