Nontraumatic Pseudoaneurysm of the Deep Palmar Arch in a 10-Month-Old Infant: A Case Report.

CASE: Pseudoaneurysms of the hand are rare among the adult population and even more rare in pediatric patients. We report a case of a 10-month-old boy who presented with a nontraumatic pseudoaneurysm of the deep palmar arch, likely of congenital etiology. Magnetic resonance imaging and angiography identified the growing left hand palmar mass. Surgical excision without the need for vascular reconstruction was performed successfully with no recurrence or complications at 1-year follow-up. CONCLUSION: Surgical excision is an effective treatment for large or symptomatic palmar pseudoaneurysms of likely congenital origin. Vascular reconstruction after excision must be considered on a case-by-case basis to ensure adequate hand perfusion.

Treatment of Hypothermic Cardiac Arrest in the Pediatric Drowning Victim, a Case Report, and Systematic Review.

OBJECTIVES: Drowning is the second leading cause of death in children. Extracorporeal membrane oxygenation (ECMO) has become the criterion standard therapy to resuscitate the hypothermic drowning victim in cardiac arrest. We present our own experience treating 5 children with hypothermic cardiac arrest in conjunction with a systematic review to analyze clinical features predictive of survival. METHODS: Our search resulted in 55 articles. Inclusion criteria were as follows: (1) younger than 18 years, (2) ECMO therapy, and (3) drowning. Ten articles met our inclusion criteria. We included studies using both central and peripheral ECMO and salt or fresh water submersions. We compared clinical features of survivors to nonsurvivors. RESULTS: A total of 29 patients from the 10 different studies met our criteria. Data analyzed included presenting cardiac rhythm, time to initiation of ECMO, submersion time, pH, potassium, lactate, duration of chest compressions, and survival. There was a significant increase in mortality for presenting rhythm of asystole and with hyperkalemia (P < 0.05). CONCLUSIONS: Extracorporeal membrane oxygenation is an important resuscitation tool for the hypothermic drowning victim. Hyperkalemia and presenting cardiac rhythm correlate with survival although they are not reasons to end resuscitation. More studies are needed to compare the outcomes in using ECMO for the hypothermic drowning victim.

Outcomes and influences of rural-focused integrated clerkship programs in general surgery.

BACKGROUND: A shortage of general surgeons is predicted in the future, with particular impact on rural surgery. This is an exploratory analysis on a rural-focused longitudinal integrated clerkship to determine if such clerkships can be used to increase interest and recruitment in rural general surgery. METHODS: An institutional database was reviewed to identify students who became general surgeons after completing a rural-focused longitudinal integrated clerkship. Telephone interviews were conducted on a portion of these surgeons. RESULTS: Fifty-seven students (3.6%) completing the rural-focused longitudinal integrated clerkship became general surgeons. Of those participating in phone interviews, most (90%) decided to become surgeons during their experience while all stated that preclinical years did not influence their specialty decision. CONCLUSIONS: A substantial portion of these surgeons went on to practice in rural communities. Pre-existing rural and primary care-focused education could help to address the future projected shortage of rural general surgeons.

ACS/ASE Medical Student Simulation-Based Skills Curriculum Study: Implementation Phase.

OBJECTIVE: Patient safety initiatives have revealed a need for standardized medical student skills curricula. In 2014 the America College of Surgeons/Association for Surgical Education Medical Student Simulation-based Skills Research Collaborative initiated a multisite study to implement and study the effect of a skills curriculum during the surgical clerkship. DESIGN: Students underwent knot-tying and suturing sessions. They performed a self-evaluation survey before and after the modules to assess their comfort level with the skills. Faculty members also evaluated the students at the completion of the skills sessions. The comfort level choices were: needs further review; proficient in simulated setting with assistance; proficient in simulated setting without assistance; and proficient in clinical setting under supervision. RESULTS: At the completion of the modules greater than 99.3% and 98.5% of students reported that they were proficient in knot-tying and suturing, respectively, in either a simulated or clinical environment. Similarly, when faculty evaluated student performance after a session, simulated or clinically proficiency reached over 97% for both two-handed and instrument knot-tying. The faculty rated the students 86.6% proficient for suturing. CONCLUSIONS: After completing the modules, a large percentage of students obtained proficiency in knot-tying and suturing, representing technical skills improvements noted by both the participants and the evaluating faculty. The America College of Surgeons/Association for Surgical Education medical student surgical skills modules represent expert developed, low cost, easy to access resources that should continue to be evaluated and disseminated to medical student learners.

Combined laparoscopic-fluoroscopic technique for primary gastrojejunostomy button tube placement.

BACKGROUND: Gastrojejunostomy (GJ) tubes are frequently used to provide pediatric enteral nutritional support for pediatric patients. Various placement methods have been described, each with attendant advantages and disadvantages. DESCRIPTION OF THE OPERATIVE TECHNIQUE: We present a technique for primary laparoscopic/fluoroscopic GJ button tube placement designed to avoid delay in placement of the jejunal limb, and difficulties associated with endoscopic-assisted and primary fluoroscopic placement. RESULTS: There were 52 gastrojejunostomy button tubes placed via this technique in patients ranging from 3.8 to 90.3 kg in weight. Three postoperative complications were identified; one bowel perforation on postoperative day two, and two tube dislodgements within 30 days. CONCLUSION: The described technique was uniformly effective and was associated with a low complication rate (5.8%).

American College of surgeons /Association for Surgical Education Medical Student Simulation-based Surgical Skills Curriculum: Alignment with Entrustable Professional Activities.

BACKGROUND: We hypothesized that medical experts would concur the American College of Surgeons/Association for Surgical Education Medical Student Simulation-based Surgical Skills Curriculum ("ACS/ASE Curriculum") could be used to teach and assess Entrustable Professional Activities (EPAs). METHODS: A "crosswalk" was created between ACS/ASE Curriculum modules and eight EPAs. Medical education experts participated in a Delphi process regarding feasibility of using the modules for teaching and assessing EPAs. RESULTS: Twenty-eight educators from six clinical fields participated. There was consensus that five of the EPAs could be taught and assessed by the ACS/ASE Curriculum. A median of nine hours per month outside the surgical clerkship was recommended for skills training. CONCLUSIONS: The ACS/ASE Curriculum lays the framework for implementing select EPAs into medical student education. Experts recommended increased time for skills training with incorporation of the modules into the first three years of medical education, with assessments planned in the third to fourth years.

Medical Student Perceptions of 24-Hour Call.

OBJECTIVE: To assess the medical student perception and experience of a 24-hour call requirement, and to learn if improvements can be made to improve the 24-hour call requirement. DESIGN: Medical students completing their required surgical clerkship over 1 academic year at our institution were surveyed prior to their clerkship and on the last week of clerkship regarding their perceptions and experience with 24-hour call. SETTING: This study was performed at the University of Minnesota, in Minneapolis, Minnesota, a medical school and tertiary medical center. PARTICIPANTS: Two hundred one medical students were given the option to complete an anonymous survey before and after their required surgical clerkship. RESULTS: Response rate for the preclerkship survey was 70% (n = 140) and 58% (n = 117) for the postclerkship survey. The mean age of respondents was 26 years, and the majority of students were in their third year of medical school. After completing the clerkship, students interested in surgery more often agreed the 24-hour call requirement should remain (51% versus 31%, p = 0.01). Students rotating at a Level I Trauma Center were also more likely to agree the call requirement should remain (59% versus 33%, p = 0.008). Medical students generally had less concerns (mental health, fatigue, mistakes, and grade performance) related to 24-hour call after completion of the clerkship. Concerns about the effect of 24-hour call on study schedule remained high in both pre and postclerkship groups. CONCLUSIONS: Medical students have concerns about the experience prior to the clerkship that diminished by its completion. To improve medical student perceptions and overall experience of 24-hour call, frequency of shifts could be limited and the 24-hour call requirement sites could be shifted to Level I Trauma Centers.

Standardized irrigation technique reduces intraabdominal abscess after appendectomy.

PURPOSE: The utility of irrigation at the time of appendectomy for acute appendicitis has been debated, with recent studies showing no benefit to irrigation. In our practice, two techniques have been used; one in which irrigation was at the discretion of the surgeon, and one in which irrigation was standardized. The standardized irrigation technique involved large volume (3-12 l) irrigation in small, focused, directed aliquots to achieve optimal dilution. We sought to retrospectively assess whether the standardized large volume irrigation technique was associated with measurably reduced intraabdominal infection. We hypothesized that there would be no difference in intraabdominal infection rate. METHODS: Medical records for cases of appendectomies performed for acute appendicitis, years 2007 through 2017, were reviewed (n = 432). Rate of subsequent abdominal infection was compared between patients who underwent the standardized large volume irrigation technique compared to those who did not using Fisher's exact test; p < 0.05 was considered significant. RESULTS: For patients that underwent the standardized large volume irrigation technique there were no (0/140) subsequent abdominal infections within the study period, compared with a rate of 6.2% (18/292) for all other patients (p value 0.001). Among cases that had a perforated appendix (n = 105), the rates were 0% (0/31) compared to 18.9% (14/74; p value 0.009). CONCLUSIONS: Utilization of a standardized large volume irrigation technique with the objective of serial dilution is associated with a significantly lower rate of subsequent abdominal infection, even among cases with a perforated appendix. Prospective studies are needed to evaluate this technique. LEVEL OF EVIDENCE: Level III. TYPE OF STUDY: Treatment study.

Recanalization of Chronic Extrahepatic Portal Vein Obstruction in Pediatric Patients Using a Minilaparotomy Approach.

PURPOSE: Extrahepatic portal vein obstruction (EHPVO) is the most frequent cause of portal hypertension in children. Some patients are not amenable to meso-Rex bypass and alternative surgeries do not restore physiologic flow. We aim to demonstrate the feasibility and safety of minilaparotomy for recanalization of chronic EHPVO. METHODS: This 2013-2015 single-center, retrospective review included pediatric patients with chronic EHPVO who underwent minilaparotomy, mesenteric vein access, and attempted recanalization of the occluded portal vein. Outcomes included portal patency, resolution of variceal bleeding, size and number of varices, spleen size, and platelet count. RESULTS: There were 6 EHPVO patients. The median age was 9.9 years and median duration of EHPVO was 7 years (3-16 years). EHPVO etiologies were liver transplantation (50%), idiopathic (33%), and umbilical vein catheterization (17%). Four patients (67%) had successful portal vein recanalization and stenting. At last follow-up [median 3.1 years (2.2-4.3 years)] all successfully recanalized patients had patent portal vein stents and resolution of varices and variceal bleeding. The median reduction in spleen size was 26%, with improvement in platelet counts (50-310/µL). The 2 patients with an idiopathic etiology may have never had a main extrahepatic portal vein based on imaging, and both were unable to be recanalized. CONCLUSIONS: Recanalization and stenting of a prolonged occlusion of the portal vein via a minilaparotomy approach is feasible, safe, and may provide an alternative to shunt surgery or endoscopic therapy in selected patients.

Peritoneal dialysis catheter placement, outcomes and complications.

PURPOSE: Peritoneal dialysis (PD) is a commonly used method for renal support in pediatric patients and can be associated with the risk of post-surgical complications. We evaluated method of placement of PD catheters with regard to post-surgical complications. METHODS: PD catheters placed at two institutions between 2005 and 2017 were reviewed. Complication rates were evaluated based on method of placement, delayed usage, omentectomy, and patient age using Fisher's exact test, two-sided, with significance set at 0.05. Factors influencing complication were evaluated with multivariate logistic regression and Kaplan-Meier survival analysis. RESULTS: There were 130 patients with 157 catheters placed, ranging in age from 1 day to 23 years. There was no significant difference in complication rate by method of placement or delayed usage. Infants were significantly more likely to experience leakage (21% vs 8%, p 0.036) and hernias (15% vs 5%, p 0.030). Patients that underwent an omentectomy were less likely to require a catheter replacement (7% vs 27%, p 0.004), and the catheters had a significantly higher survival rate (p 0.009). We found that laparoscopic intervention resulted in catheter salvage. Lateral exit sites may be a risk factor for catheter migration in some patients. CONCLUSIONS: Omentectomy is associated with longer PD catheter survival. Laparoscopic salvage of dysfunctional catheters may be a valuable adjunct in management.

Radial umbilical dermatofasciolysis to invert the skin following umbilical herniorrhaphy.

BACKGROUND: Umbilical hernia is a common congenital anomaly, and can result in the appearance of a protuberant umbilicus. In select cases, inversion of the umbilical skin can be impaired by the presence of thickened dermis or fascial remnants of the umbilical stalk. DESCRIPTION OF OPERATIVE TECHNIQUE: After umbilical herniorrhaphy, the skin is everted over the left index finger and radial partial thickness incisions in the fascia and dermis of the undersurface of the umbilicus. The umbilical skin is then inverted and secured to the fascia. CONCLUSION: This operative technique can allow complete inversion of the umbilical skin creating an aesthetically appealing umbilical hernia repair.

Intraoperative temperature regulation in children using a liquid-warming garment.

PURPOSE: Children undergoing operative intervention while induced under general anesthesia are at risk for experiencing a significant decrease in core body temperature that can lead to adverse systemic effects. Given that the head contributes an estimated 18% of a child's body surface area, we theorized that a liquid-warming garment applied to the head could control a pediatric patient's core body temperature during surgical procedures. METHODS: Patients undergoing elective, non-cranial, general surgical procedures were enrolled in the study. A head garment with an embedded network of tubing was placed on the patient. The garment connected to a computer-controlled water bath that managed the temperature of the water in the tubing through a feedback mechanism. RESULTS: Ten patients with ages ranging from 1 day to 3 years (mean age 10.5 months) were enrolled in this study. The average procedure length was 82.5 min. The mean core body temperature throughout the procedure for all-comers was 36.5 ± 0.9 °C with an overall mean difference in maximum and minimum temperatures of 1.32 ± 1.1 °C. CONCLUSION: A liquid-warming garment applied to the head of pediatric surgical patients is an innovative and relatively low-cost means to regulate and to maintain the ideal core body temperature of patients undergoing surgical procedures.

Basic airway skills acquisition using the American College of Surgeons/Association for Surgical Education medical student simulation-based surgical skills curriculum: Initial results.

BACKGROUND: The ACS/ASE Medical Student Simulation-Based Skills Curriculum was developed to standardize medical student training. This study aims to evaluate the feasibility and validity of implementing the basic airway curriculum. METHODS: This single-center, prospective study of medical students participating in the basic airway module from 12/2014-3/2016 consisted of didactics, small-group practice, and testing in a simulated clinical scenario. Proficiency was determined by a checklist of skills (1-15), global score (1-5), and letter grade (NR-needs review, PS-proficient in simulation scenario, CP-proficient in clinical scenario). A proportion of students completed pre/post-test surveys regarding experience, satisfaction, comfort, and self-perceived proficiency. RESULTS: Over 16 months, 240 students were enrolled with 98% deemed proficient in a simulated or clinical scenario. Pre/post-test surveys (n = 126) indicated improvement in self-perceived proficiency by 99% of learners. All students felt moderately to very comfortable performing basic airway skills and 94% had moderate to considerable satisfaction after completing the module. CONCLUSIONS: The ACS/ASE Surgical Skills Curriculum is a feasible and effective way to teach medical students basic airway skills using simulation.

Management of giant omphaloceles: A systematic review of methods of staged surgical vs. nonoperative delayed closure.

PURPOSE: Despite the numerous methods of closure for giant omphaloceles, uncertainty persists regarding the most effective option. Our purpose was to review the literature to clarify the current methods being used and to determine superiority of either staged surgical procedures or nonoperative delayed closure in order to recommend a standard of care for the management of the giant omphalocele. METHODS: Our initial database search resulted in 378 articles. After de-duplification and review, we requested 32 articles relevant to our topic that partially met our inclusion criteria. We found that 14 articles met our criteria; these 14 studies were included in our analysis. 10 studies met the inclusion criteria for nonoperative delayed closure, and 4 studies met the inclusion criteria for staged surgical management. RESULTS: Numerous methods for managing giant omphaloceles have been described. Many studies use topical therapy secondarily to failed surgical management. Primary nonoperative delayed management had a cumulative mortality of 21.8% vs. 23.4% in the staged surgical group. Time to initiation of full enteric feedings was lower in the nonoperative delayed group at 14.6days vs 23.5days. CONCLUSION: Despite advances in medical and surgical therapies, giant omphaloceles are still associated with a high mortality rate and numerous morbidities. In our analysis, we found that nonoperative delayed management with silver therapy was associated with lower mortality and shorter duration to full enteric feeding. We recommend that nonoperative delayed management be utilized as the primary therapy for the newborn with a giant omphalocele.

Minimally Invasive Adenocarcinoma of the Lung as Second Malignant Neoplasm Following Pediatric Rhabdomyosarcoma.

Primary pulmonary tumors are extremely rare in the pediatric population; however, sporadic cases of invasive pulmonary adenocarcinoma as a second malignant neoplasm (SMN) have been described in survivors of pediatric cancers. Pediatric patients with rhabdomyosarcoma (RMS) have a particularly increased risk of developing a SMN when compared to the general population, though pulmonary adenocarcinoma has not been previously described in a RMS patient. A 12-year-old female previously treated for stage IV pelvic RMS was found to have a left pulmonary nodule on surveillance computed tomography. The nodule was detected 4.25 years after the completion of treatment, which included resection, chemotherapy, and radiation to the abdomen and pelvis. Wedge resection of the pulmonary lesion was performed with negative margins. Histopathological examination revealed minimally invasive adenocarcinoma. Pulmonary adenocarcinoma may rarely present as a SMN in pediatric cancer survivors. The pathogenesis of this association is not yet entirely clear, but may include chemotherapy-induced mutagenesis and/or genetic predisposition. As pulmonary adenocarcinoma may present as a lung lesion radiographically indistinguishable from metastatic RMS, it should be considered in the differential diagnosis of any pediatric RMS survivor presenting with a new pulmonary nodule, especially in cases with late recurrence.

The Evolving Role of Simulation in Teaching Surgery in Undergraduate Medical Education.

Simulation-based training (SBT) over the last 10 years has become a mainstay for surgical education at the graduate medical education (GME) level. More recently, however, the technique has rapidly become the standard for early efficient teaching of surgical skills and decision making at the undergraduate medical education (UME) level. The described benefits of SBT include its ability to compartmentalize education, to combine immediate assessment and feedback, and to accelerate knowledge and skill acquisition for the young learner. Consequently, SBT is now being adopted in multiple national medical student surgical educational initiatives.

Unanticipated teaching demands rise with simulation training: strategies for managing faculty workload.

INTRODUCTION: Using simulation to teach and assess learners represents a powerful approach to training, but one that comes with hidden costs in terms of faculty time, even if programs adopt existing curricula. Some simulators are built to be used independently by learners, but much of the surgical simulation curricula developed for cognitive and psychomotor tasks requires active faculty involvement and low learner-to-faculty teaching ratios to ensure sufficient practice with feedback. The authors hypothesize that the added teaching demands related to simulation have resulted in a significant financial burden to surgery training programs. To date, the effect of simulation-based training on faculty workload has not been estimated objectively and reported in the literature. METHODS: To test their hypothesis, the authors analyzed data from 2 sources: (1) changes over time (2006-2014) in formal teaching hours and estimated faculty costs at the University of Minnesota, General Surgery Department and (2) a 2014 online survey of general surgery program directors on their use of simulation for teaching and assessment and their perceptions of workload effects. RESULTS: At the University of Minnesota, the total number of hours spent by department faculty in resident and student simulation events increased from 81 in annual year 2006 to 365 in annual year 2013. Estimated full-time equivalent faculty costs rose by 350% during the same period. Program directors (n = 48) of Association of Program Directors in Surgery reported either a slight (60%) or a significant (33%) increase in faculty workload with the advent of simulation, and moderate difficulty in finding enough instructors to meet this increase. Calling upon leadership for support, using diverse instructor types, and relying on "the dedicated few" represent the most common strategies. CONCLUSION: To avoid faculty burnout and successfully sustain faculty investment in simulation-based training over time, programs need to be creative in building, sustaining, and managing the instructor workforce.

Surgical skills acquisition: performance of students trained in a rural longitudinal integrated clerkship and those from a traditional block clerkship on a standardized examination using simulated patients.

OBJECTIVES: Rural longitudinal integrated clerkship (LIC) programs for third-year medical students provide strong educational curricula and can nurture interest in rural surgical practice. Students learn technical skills in an apprenticeship model. Variability in instruction and patient experiences across sites, coupled with a lack of simulation facilities, raise some concerns about technical skill development. To explore the adequacy of skills acquisition for students in the University of Minnesota Rural Physician Associate Program (RPAP), this study compared RPAP students' performance on a scenario-based Objective Structured Assessment of Technical Skills (OSATS) with that of traditional surgery block clerkship students (Course 7500). DESIGN, SETTING, AND PARTICIPANTS: This is a nonexperimental post-only study. All enrolled students (n = 254) completed the OSATS examination. Students in the Course 7500 (n = 222) completed 15 hours of simulation skills training and supervised practice during their 6-week clerkship. RPAP students (n = 32) completed 3 hours of skills training before their 9-month rural assignment. Both groups had access to comprehensive online materials. Mean OSATS checklist, global rating, and total scores were compared at the end of training using t tests (p < 0.05). Self-reported OR and clinical experiences were explored. RESULTS: Both groups did well on the OSATS. There were no statistical differences in completion time, checklist scores, mean global ratings, or total scores. RPAP students reported significantly more days in the OR, surgery cases, and first assists. Experience with OSATS tasks reported by RPAP students during clinical rotations correlated with their OSATS performance. CONCLUSION: This study supports the viability of the LIC model for fundamental skills acquisition when augmented with introductory simulation skills training and online resources. It also suggests that simulation fills a training gap for students in a traditional surgery block clerkship program. It opens a dialog about the potential partnership of surgery departments with rural LICs to address rural general surgery shortages. Further research in this aspect is needed.

American College of Surgeons/Association for Surgical Education medical student simulation-based surgical skills curriculum needs assessment.

BACKGROUND: Simulation can enhance learning effectiveness, efficiency, and patient safety and is engaging for learners. METHODS: A survey was conducted of surgical clerkship directors nationally and medical students at 5 medical schools to rank and stratify simulation-based educational topics. Students applying to surgery were compared with others using Wilcoxon's rank-sum tests. RESULTS: Seventy-three of 163 clerkship directors (45%) and 231 of 872 students (26.5%) completed the survey. Of students, 28.6% were applying for surgical residency training. Clerkship directors and students generally agreed on the importance and timing of specific educational topics. Clerkship directors tended to rank basic skills, such as examination skills, higher than medical students. Students ranked procedural skills, such as lumbar puncture, more highly than clerkship directors. CONCLUSIONS: Surgery clerkship directors and 4th-year medical students agree substantially about the content of a simulation-based curriculum, although 4th-year medical students recommended that some topics be taught earlier than the clerkship directors recommended. Students planning to apply to surgical residencies did not differ significantly in their scoring from students pursuing nonsurgical specialties.