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INTRODUCTION: With increased social isolation due to COVID-19, social media has been increasingly adopted for communication, education, and entertainment. We sought to understand the frequency and characteristics of social media usage among general surgery trainees. MATERIALS AND METHODS: General surgery trainees in 15 American training programs were invited to participate in an anonymous electronic survey. The survey included questions about demographics, frequency of social media usage, and perceptions of risks and benefits of social media. Univariate analysis was performed to identify differences between high users of social media (4-7 h per week on at least one platform) and low users (0-3 h or less on all platforms). RESULTS: One hundred fifty-seven of 591 (26.6%) trainees completed the survey. Most respondents were PGY3 or lower (75%) and high users of social media (74.5%). Among high users, the most popular platforms were Instagram (85.7%), YouTube (85.1%), and Facebook (83.6%). YouTube and Twitter were popular for surgical education (77.3% and 68.2%, respectively). The most reported benefits of social media were improving patient education and professional networking (85.0%), where high users agreed more strongly about these benefits (P = 0.002). The most reported risks were seeing other residents (42%) or attendings (17%) with unprofessional behavior. High users disagreed more strongly about risks, including observing attendings with unprofessional behavior (P = 0.028). CONCLUSIONS: Most respondents were high users of social media, particularly Instagram, YouTube, and Facebook. High users incorporated social media into their surgical education while perceiving more benefits and fewer risks of social media.
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COVID-19 , Medios de Comunicación Sociales , COVID-19/epidemiología , Comunicación , Humanos , Encuestas y CuestionariosRESUMEN
BACKGROUND: The toxicity of released metallic particles generated in metal-on-metal (MoM) total hip arthroplasty (THA) using cobalt chromium (CoCr) has raised concerns regarding their safety amongst both surgeons and the public. Soft tissue changes such as pseudotumours and metallosis have been widely observed following the use of these implants, which release metallic by-products due to both wear and corrosion. Although activated fibroblasts, the dominant cell type in soft tissues, have been linked to many diseases, the role of synovial fibroblasts in the adverse reactions caused by CoCr implants remains unknown. To investigate the influence of implants manufactured from CoCr, the periprosthetic synovial tissues and synovial fibroblasts from patients with failed MoM THA, undergoing a revision operation, were analysed and compared with samples from patients undergoing a primary hip replacement, in order to elucidate histological and cellular changes. RESULTS: Periprosthetic tissue from patients with MoM implants was characterized by marked fibrotic changes, notably an increase in collagen content from less than 20% to 45-55%, an increase in α-smooth muscle actin positive cells from 4 to 9% as well as immune cells infiltration. Primary cell culture results demonstrated that MoM synovial fibroblasts have a decreased apoptosis rate from 14 to 6% compared to control synovial fibroblasts. In addition, synovial fibroblasts from MoM patients retained higher contractility and increased responsiveness to chemotaxis in matrix contraction. Their mechanical properties at a single cell level increased as observed by a 60% increase in contraction force and higher cell stiffness (3.3 kPa in MoM vs 2.18 kPa in control), as measured by traction force microscopy and atomic force microscopy. Further, fibroblasts from MoM patients promoted immune cell invasion by secreting monocyte chemoattractant protein 1 (MCP-1, CCL2) and induced monocyte differentiation, which could also be associated with excess accumulation of synovial macrophages. CONCLUSION: Synovial fibroblasts exposed in vivo to MoM THA implants that release CoCr wear debris displayed dramatic phenotypic alteration and functional changes. These findings unravelled an unexpected effect of the CoCr alloy and demonstrated an important role of synovial fibroblasts in the undesired tissue reactions caused by MoM THAs.
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Artroplastia de Reemplazo de Cadera , Fibroblastos/fisiología , Prótesis Articulares de Metal sobre Metal , Anciano , Cromo , Cobalto , Femenino , Humanos , Macrófagos , Masculino , Metales , Persona de Mediana Edad , Membrana SinovialRESUMEN
BACKGROUND: Splenectomy is often required in the pediatric population as part of the treatment of hematologic disorders and can be performed laparoscopically or open. We evaluated the comparative effectiveness of laparoscopic (LS) and open (OS) splenectomies using the American College of Surgeons National Surgical Quality Improvement Program Pediatric (NSQIP-P) data set. METHODS: The NSQIP-P data set was used to identify children who underwent elective splenectomy between January 2012 and December 2016. Thirty-day outcomes between OS and LS, and LS alone and concurrent LS and cholecystectomy were compared using univariate and multivariate analysis. RESULTS: Most of the splenectomies (91%) were performed laparoscopically. There was no difference in overall complications between OS (n = 60) and LS (n = 613), although OS had a higher risk of perioperative transfusion (OR 3.19, 95% CI 1.52-6.69). LS was associated with a shorter median hospital length of stay (2 versus 4 d, P < 0.001) and similar mean operative times compared to OS (120 versus 133 min, P = 0.559). There was no difference in outcomes of children undergoing LS versus LS and concurrent cholecystectomy (n = 129). CONCLUSIONS: LS has become the standard approach for elective splenectomies in the pediatric population and has minimal morbidity, and when indicated, concurrent cholecystectomies do not increase the risk of complications. LEVELS OF EVIDENCE: III.
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Procedimientos Quirúrgicos Electivos/tendencias , Enfermedades Hematológicas/cirugía , Laparoscopía/tendencias , Complicaciones Posoperatorias/epidemiología , Esplenectomía/tendencias , Adolescente , Niño , Preescolar , Colecistectomía/efectos adversos , Colecistectomía/métodos , Conjuntos de Datos como Asunto , Procedimientos Quirúrgicos Electivos/efectos adversos , Procedimientos Quirúrgicos Electivos/métodos , Femenino , Humanos , Laparoscopía/efectos adversos , Laparoscopía/métodos , Tiempo de Internación/estadística & datos numéricos , Masculino , Tempo Operativo , Complicaciones Posoperatorias/etiología , Estudios Retrospectivos , Esplenectomía/efectos adversos , Esplenectomía/métodos , Resultado del TratamientoRESUMEN
Articular cartilage with its inherently poor capacity for self-regeneration represents a primary target for tissue engineering strategies, with approaches focusing on the in vitro generation of neo-cartilage using chondrocyte-seeded 3D scaffolds subjected to mechanical conditioning. Although uniaxial compression regimens have significantly up-regulated proteoglycan synthesis, their effects on the synthesis of collagen have been modest. Articular cartilage is subjected to shear forces during joint motion. Accordingly, this study utilized an apparatus to apply biaxial loading to chondrocytes seeded within agarose constructs with endplates. The chondrocytes yielded a monotonic increase in proteoglycan synthesis both in free swelling culture up to day 8 and when the constructs were subjected to dynamic compression alone (15% amplitude at a frequency of 1 Hz for 48 h). However, when dynamic shear (10% amplitude at 1 Hz) was superimposed on dynamic compression, total collagen synthesis was also up-regulated, within 3 days of culture, without compromising proteoglycan synthesis. Histological analysis revealed marked collagen deposition around individual chondrocytes. A significant proportion (50%) of collagen was released into the culture medium, suggesting that it had only been partially synthesized in its mature state. The overall biosynthetic activity was enhanced more when the biaxial stimulation was applied in a continuous mode as opposed to intermittent loading. Results of the present study strongly suggest that proteoglycan and collagen synthesis may be triggered by uncoupled mechanosensitive cellular responses. The proposed in vitro model and the prescribed conditioning protocols demonstrated that a short pre-culture period is preferable to long free swelling culture condition as it enables a significantly higher up-regulation of collagen. Biotechnol. Bioeng. 2017;114: 1614-1625. © 2017 Wiley Periodicals, Inc.
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Condrocitos/fisiología , Colágeno/biosíntesis , Mecanotransducción Celular/fisiología , Proteoglicanos/biosíntesis , Sefarosa/química , Andamios del Tejido , Animales , Bovinos , Células Cultivadas , Condrocitos/citología , Fuerza Compresiva/fisiología , Masculino , Estrés MecánicoRESUMEN
PURPOSE: Variation in management characterizes treatment of infants with a congenital pulmonary airway malformation (CPAM). This review addresses six clinically applicable questions using available evidence to provide recommendations for the treatment of these patients. METHODS: Questions regarding the management of a pediatric patient with a CPAM were generated. English language articles published between 1960 and 2014 were compiled after searching Medline and OvidSP. The articles were divided by subject area and by the question asked, then reviewed and included if they specifically addressed the proposed question. RESULTS: 1040 articles were identified on initial search. After screening abstracts per eligibility criteria, 130 articles were used to answer the proposed questions. Based on the available literature, resection of an asymptomatic CPAM is controversial, and when performed is usually completed within the first six months of life. Lobectomy remains the standard resection method for CPAM, and can be performed thoracoscopically or via thoracotomy. There is no consensus regarding a monitoring protocol for observing asymptomatic lesions, although at least one chest computerized tomogram (CT) should be performed postnatally for lesion characterization. An antenatally identified CPAM can be evaluated with MRI if fetal intervention is being considered, but is not required for the fetus with a lesion not at risk for hydrops. Prenatal consultation should be offered for infants with CPAM and encouraged for those infants in whom characteristics indicate risk of hydrops. CONCLUSIONS: Very few articles provided definitive recommendations for care of the patient with a CPAM and none reported Level I or II evidence. Based on available information, CPAMs are usually resected early in life if at all. A prenatally diagnosed congenital lung lesion should be evaluated postnatally with CT, and prenatal counseling should be undertaken in patients at risk for hydrops.
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Malformación Adenomatoide Quística Congénita del Pulmón/cirugía , Absceso/prevención & control , Comités Consultivos , Enfermedades Asintomáticas , Transformación Celular Neoplásica , Diagnóstico por Imagen , Medicina Basada en la Evidencia , Femenino , Feto/cirugía , Glucocorticoides/uso terapéutico , Humanos , Neumonectomía/métodos , Neumonía/prevención & control , Embarazo , Atención Prenatal , Diagnóstico Prenatal , Sociedades Médicas , Espera VigilanteRESUMEN
BACKGROUND: Variation exists in the management of choledocholithiasis (CDL). This study evaluated associations between demographic and practice-related characteristics and CDL management. METHODS: A 22-item, web-based survey was administered to US general surgeons. Respondents were classified into metropolitan or nonmetropolitan groups by zip code. Univariate tests and multivariable logistic regression were used to determine factors associated with CDL management preferences. RESULTS: The survey was sent to 32,932 surgeons; 9902 performed laparoscopic cholecystectomy within the last year; 750 of 771 respondents had a valid US zip code and were included in the analysis. Mean practice time was 18 ± 10 years, 87% were male, and 83% practiced in a metropolitan area. For preoperatively known CDL, 86% chose preoperative endoscopic retrograde cholangiopancreatography (ERCP). Those in metropolitan areas were more likely to select preoperative ERCP than those in nonmetropolitan areas (88 vs. 79%, p < 0.001). For CDL discovered intraoperatively, 30% selected laparoscopic common bile duct exploration (LCBDE) as their preferred method of management with no difference between metropolitan and nonmetropolitan areas (30 vs. 26%, p = 0.335). The top reasons for not performing LCBDE were: having a reliable ERCP proceduralist available, lack of equipment, and lack of comfort performing LCBDE. Factors associated with preoperative ERCP were: metropolitan status, selective intraoperative cholangiography (IOC), and availability of a reliable ERCP proceduralist. Those who perform selective IOC were 70% less likely to prefer LCBDE (OR 0.32, 95% CI 0.18-0.57, p < 0.001). Those with a reliable ERCP proceduralist available were 90% less likely to prefer LCBDE (OR 0.10, 95% CI 0.04-0.26, p < 0.001). CONCLUSIONS: The majority of respondents preferred ERCP for the management of CDL. Having a reliable ERCP proceduralist available, use of selective IOC, and metropolitan status were independently associated with preoperative ERCP. Postoperative ERCP was preferred for managing intraoperatively discovered CDL. Many surgeons are uncomfortable performing LCBDE, and increased training may be needed.
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Colangiopancreatografia Retrógrada Endoscópica , Colecistectomía Laparoscópica , Coledocolitiasis/cirugía , Adulto , Colangiopancreatografia Retrógrada Endoscópica/métodos , Colecistectomía Laparoscópica/métodos , Femenino , Encuestas de Atención de la Salud , Humanos , Masculino , Guías de Práctica Clínica como Asunto , Cirujanos , Estados UnidosRESUMEN
BACKGROUND: Delayed gastric emptying (DGE) is a frequent cause of morbidity, prolonged hospital stay and readmission after a pancreaticoduodenectomy (PD). We sought to evaluate predictive peri-operative factors for DGE after a PD. METHODS: Four hundred and sixteen consecutive patients who underwent a PD at our tertiary referral centre were identified. Univariate and multivariate (MV) logistic regression models were used to assess peri-operative factors associated with the development of clinically significant DGE and a post-operative pancreatic fistula (POPF). RESULTS: DGE occurred in 24% of patients (n = 98) with Grades B and C occurring at 13.5% (n = 55) and 10.5% (n = 43), respectively. Using MV regression, a body mass index (BMI) ≥35 [odds ratio (OR) = 3.19], operating room (OR) length >5.5 h (OR = 2.72) and prophylactic octreotide use (OR = 2.04) were independently associated with an increased risk of DGE. DGE patients had a significantly longer median hospital stay (12 versus 7 days), higher 90-day readmission rates (32% versus 18%) and an increased incidence of a pancreatic fistula (59% versus 27%). When controlling for POPF, only OR length >5.5 h (OR 2.73) remained significantly associated with DGE. CONCLUSIONS: DGE remains a significant cause of morbidity, increased hospital stay and readmission after PD. Our findings suggest patients with a BMI ≥35 or longer OR times have a higher risk of DGE either independently or through the development of POPF. These patients should be considered for possible enteral feeding tube placement along with limited octreotide use to decrease the potential risk and consequences of DGE.
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Vaciamiento Gástrico , Gastroparesia/etiología , Pancreaticoduodenectomía/efectos adversos , Estómago/fisiopatología , Anciano , Índice de Masa Corporal , Distribución de Chi-Cuadrado , Femenino , Gastroparesia/diagnóstico , Gastroparesia/fisiopatología , Gastroparesia/prevención & control , Humanos , Tiempo de Internación , Modelos Logísticos , Masculino , Persona de Mediana Edad , Análisis Multivariante , Oportunidad Relativa , Fístula Pancreática/diagnóstico , Fístula Pancreática/etiología , Readmisión del Paciente , Estudios Retrospectivos , Factores de Riesgo , Tennessee , Centros de Atención Terciaria , Factores de Tiempo , Resultado del TratamientoRESUMEN
An 11-year-old otherwise healthy female presented with renal colic and during computed tomography imaging evaluation, she was found to have a right distal ureteral stone with associated hydroureteronephrosis, medially deviated ureter, and 4-cm solid retroperitoneal mass. The mass was palpable on physical exam and was further categorized with magnetic resonance imaging, ultrasound, and laboratory testing. A multidisciplinary team approach, including pediatric surgery, radiology, oncology, and urology, led to the patient undergoing a right retrograde pyelogram, ureteroscopy with stent placement, and laparoscopic excision of retroperitoneal mass. Her pathology revealed lymphoid hyperplasia with histologic features of Castleman disease.
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Enfermedad de Castleman , Cólico Renal , Uréter , Cálculos Ureterales , Urología , Humanos , Niño , Femenino , Cólico Renal/diagnóstico , Cólico Renal/etiología , Enfermedad de Castleman/complicaciones , Enfermedad de Castleman/diagnóstico , Enfermedad de Castleman/cirugía , Uréter/cirugía , Cálculos Ureterales/cirugíaRESUMEN
INTRODUCTION: Residency programs and their directors frequently receive funding from industry payers. Both general surgery residency program directors (PDs) and assistant program directors (APDs) receive industry funding for various reasons, including educational advancement. This study investigates recent trends in industry payments to both PDs and APDs to better understand the financial relationships among leaders in residency education. METHODS: We compared industry payments to general surgery residency PDs and APDs from 2019 to 2021 utilizing the U.S. Centers for Medicare & Medicaid Services (CMS) open payments database. In addition, secondary analyses were performed among PDs to assess differences based on gender, practicing surgical specialty, and geographical region. RESULTS: During the study period (2019-2021), PDs received payments amounting to 2,882,821 USD. PDs were found to receive more funding than APDs, with each receiving average funding of 10,045 vs. 323 USD (p < 0.01), respectively, over the study period. There was a significant decrease in total payments from 2019 to 2020 (1,512,190 vs. 868,811 USD; p < 0.01). Total payments made in 2021 were similar compared to 2020 (905,836 vs. 868,811 USD; pâ¯=â¯0.1). We found that male PDs received significantly more in-industry payments when compared to female PDs (11,702 USD per PD vs. 3971 USD per PD, p < 0.01). CONCLUSION: This study presents initial data that residency program leadership has robust biomedical industry relationships, and further research is warranted to investigate the impacts of these payments on program resources, educational opportunities for residents, and program outcomes. Male PDs received significantly more industry payments when compared to female PDs. Leaders in the surgical training community must cautiously ensure that these industry relationships are appropriately navigated.
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Cirugía General , Internado y Residencia , Especialidades Quirúrgicas , Masculino , Humanos , Femenino , Estados Unidos , Liderazgo , Medicare , Industrias , Especialidades Quirúrgicas/educación , Cirugía General/educaciónRESUMEN
OBJECTIVE: To determine if senior residents are comparable to faculty in assessing first-year resident skills on their overall assessment. BACKGROUND: As resident training moves towards a competency-based model, innovative approaches to evaluation and feedback through simulation need to be developed for both procedural as well as interpersonal and communication skills. In most areas of simulation, the faculty assess resident performance however; in clinical practice, first-year residents are often overseen and taught by senior residents. We aim to explore the agreement between faculty and senior resident assessors to determine if senior residents can be incorporated into a competency-based curriculum as appropriate evaluators of first-year resident skills. DESIGN: Annual surgical first year resident training for central line placement, obtaining informed consent and breaking bad news at a single institution is assessed through an overall assessment (OA). In previous years, only faculty have been the evaluators for the OA. In this study, select senior residents were asked to participate as evaluators and agreement between groups of evaluators was assessed across the 3 tasks taught during surgical first-year resident training. SETTING: Vanderbilt University Medical Center, tertiary hospital, Simulation Center. PARTICIPANTS: Anesthesia and surgery interns, chief residents, anesthesia and surgical faculty. RESULTS: Agreement between faculty and senior resident assessors was strongest for the central line placement simulation with a faculty average competency score of 10.71 and 9.59 from senior residents (κâ¯=â¯0.43; 95% CI: -0.2, 0.34). Agreement was less substantial for simulated informed consent (κâ¯=â¯0.08; 95% CI: -0.19, 0.36) and the breaking bad news simulation (κâ¯=â¯0.07; 95% CI: -0.2, 0.34). CONCLUSION: Select senior residents are comparable to faculty evaluators for procedural competency; however, there was less agreement between evaluator groups for interpersonal and communication-based competencies.
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Internado y Residencia , Humanos , Educación de Postgrado en Medicina , Curriculum , Docentes , Centros Médicos Académicos , Competencia Clínica , Docentes MédicosRESUMEN
INTRODUCTION: Digital education tools are a cornerstone in the evolution to CBME through EPAs. Successful implementation requires understanding the variable impacts of EHR-driven delivery of EPAs, flexible digital device access to EPAs, and user-behavior trends. METHODS: Through a HIPAA compliant, flexible-device accessible, surgical education platform, general surgery training programs at 21 institutions collected EPA from July 2023 to April 2024. At 5 EHR-integrated institutions (EHR+), EPA were created for clinical activities based on the OR schedule, automatically pushed to attendings and residents with built in completion reminders. At 16 institutions without EHR integration (EHR-), EPA were initiated manually. To improve user experience, care phases were bundled (cEPA). We compared the EHR+ and EHR- groups, computing descriptive statistics on the cEPAs completed and user behavior metrics. RESULTS: We collected 4187 cEPAs in total, with 82% at EHR+ institutions and 18% at EHR- institutions. Platform triggering dramatically drove cEPA completion for both faculty and residents, 88% and 81%, respectively. Only 3% were initiated by the faculty or resident. Faculty at EHR+ institutions strongly preferred the automated OR-triggered workflow to start their EPAs (Chi-squared test, p ≈ 0). Faculty completed all 3 care phases nearly 80% of the time. Time reminders specifically drive EPA completion for residents and faculty on weekdays and build habits on weekends. 71% of cEPAs completed were by computer, and 29% by phone. More comments were provided when computers were used. Residents reviewed feedback with a median lag of 1 hour and 29 min after results were available. CONCLUSIONS: EHR-driven delivery of EPA leads to a 4.6-fold increase in EPAs completed. EPA initiation is the most critical phase in the workflow and EHR-data driven alerts drive this action. These alerts are also effective drivers of habit formation. Flexible device access is important to increase EPAs completed and improve the usefulness through comments for residents.
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Registros Electrónicos de Salud , Cirugía General , Cirugía General/educación , Humanos , Internado y Residencia , Evaluación Educacional , Educación de Postgrado en Medicina/métodos , Competencia Clínica , Estados UnidosRESUMEN
INTRODUCTION: Management of choledocholithiasis and its complications is variable and often requires transfer to a specialty facility. This study links patient-specific characteristics with the outcome measure of complicated choledocholithiasis to identify high-risk patients who may require expedited treatment or transfer to a higher level of care. MATERIALS AND METHODS: Patients with a discharge diagnosis of choledocholithiasis (CDL) were identified from the 2009 Nationwide Inpatient Sample (NIS). Patient characteristics were identified associated with the primary outcome measure of complicated choledocholithiasis (cCDL), defined as acute pancreatitis or cholangitis during the admission for CDL. Predictors of mortality were also evaluated. Analysis was performed using complex-sample univariate and adjusted analyses. RESULTS: We identified 123,990 discharges with a diagnosis of CDL. The overall incidence of CDL was 314 per 100,000 NIS discharges. Forty-one percent of CDL discharges were for cCDL (acute pancreatitis 31%, cholangitis 12%). Risk factors for cCDL included age (risk increased 0.8% per year), male gender (odds ratio [OR] 1.2, 95% confidence interval [CI] 1.1-1.2), alcohol abuse (OR 1.5, CI 1.3-1.8), diabetes (OR 1.1, CI 1.0-1.2), hypertension (OR 1.1, CI 1.0-1.2), obesity (OR 1.2, CI 1.1-1.3), nonelective admission (OR 2.3, CI 2.0-2.6), and Asian/Pacific Islander race/ethnicity (OR 1.2, CI 1.0-1.5). Patients with cCDL had increased odds of mortality (OR 1.5, CI 1.2-2.0). CONCLUSIONS: Increased age, nonelective admission, and specific comorbid conditions are associated with cCDL, which has increased mortality. These factors can be used to identify patients needing timely access to treatment or transfer to a higher level of care.
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Colangitis/etiología , Coledocolitiasis/complicaciones , Pancreatitis/etiología , Anciano , Coledocolitiasis/mortalidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Transferencia de Pacientes , Factores de Riesgo , Estados Unidos/epidemiologíaRESUMEN
BACKGROUND: Exploration of urban-rural (UR) and regional differences is critical to developing effective healthcare delivery systems. Choledocholithiasis (CDL) remains a common problem with a range of therapeutic options and potentially severe complications. This study evaluated UR and regional differences of CDL presentation and treatment. We hypothesized that UR status contributes to differences in treatment of CDL. METHODS: This study examined patients from the 2007 Healthcare Cost and Utilization Project dataset. Inpatient discharges and interventions for CDL patients were identified. UR and regional designations were determined from National Center for Health Statistics guidelines. Patients with pancreatitis or cholangitis were designated as complicated CDL (cCDL) patients. Interventions for CDL were classified as endoscopic, surgical, or percutaneous. Complex-sample proportion analyses were performed. RESULTS: A total of 111,021 patients with CDL were identified; 81% of these patients lived in urban areas compared with 19% in rural areas; 61% had uncomplicated choledocholithiasis (uCDL) and 39% had cCDL. The overall distribution of uCDL and cCDL did not differ by UR status or region. A higher proportion of rural patients did not receive an intervention 45.1% (95%CI 41.8%-48.4%) versus urban patients 30.5% (28.8%-32.2%), P < 0.05. Interventions for urban patients were more likely endoscopic 87.7% (86.8%-88.6%) compared with rural 82.0% (79.3%-84.7%), P < 0.05. Rural patients were more likely to undergo surgery 10.5% (8.6%-12.4%) than urban patients 4.9% (4.4%-5.4%), P < 0.05. Regional variations did not impact the type of intervention received. CONCLUSION: Rural patients received CDL interventions less often and had a higher proportion of surgical interventions regardless of severity of presentation.
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Coledocolitiasis/epidemiología , Población Rural/estadística & datos numéricos , Población Urbana/estadística & datos numéricos , Coledocolitiasis/terapia , Estudios Transversales , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estados Unidos/epidemiologíaRESUMEN
Isolation and characterization of metal-on-metal (MoM) wear particles from simulator lubricants is essential to understand wear behaviour, ion release and associated corrosive activity related to the wear particles. Substantial challenges remain to establish a simple, precise and repeatable protocol for the isolation and analysis of wear particles due to their extremely small size, their tendency to agglomerate and degrade. In this paper, we describe a simple and efficient method for the bulk isolation and characterisation of wear particles from MoM bearings. Freeze drying was used to remove the large volume of water from the serum lubricant, enzymes used to digest the proteins and ultracentrifugation to finally isolate and purify the particles. The present study involved a total of eight steps for the isolation process and a wear particle extraction efficiency of 45% was achieved.
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Prótesis de Cadera , Metales/química , Microscopía Electrónica de Transmisión , Espectrofotometría AtómicaRESUMEN
Xylobezoar is a rare clinical condition in which undigested paper becomes trapped in the gastrointestinal tract causing varying degrees of gastrointestinal obstruction. This condition can be suspected in children with a history of gastric surgeries, decreased gastrointestinal motility, or pica. Xylobezoar presents with symptoms ranging from chronic abdominal pain to gastrointestinal perforation. Surgical intervention is often required as endoscopic removal is challenging and not always successful. Chemical dissolution has been shown to be effective in treating certain bezoars. Here, we report a case of a pediatric patient with xylobezoar who was successfully treated with continuous enteral Coca-Cola® infusion.
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INTRODUCTION: Case logs are foundational data in surgical education, yet cases are consistently under-reported. Logging behavior is driven by multiple human and systems factors, including time constraints, ease of case data retrieval, access to data-entry tools, and procedural code decision tools. METHODS: We examined case logging trends at three mid-sized, general surgery training programs from September 2016-October 2020, January 2019-October 2020 and May 2019-October 2020, respectively. Across the programs we compared the number of cases logged per week when residents logged directly to ACGME versus via a resident education platform with machine learning-based case logging assistance tools. We examined case logging patterns across 4 consecutive phases: baseline default ACGME logging prior to platform access (P0 "Manual"), full platform logging assistance (P1 "Assisted"), partial platform assistance requiring manual data entry without data integrations (P2 "Notebook"), and resumed fully integrated platform with logging assistance (P3 "Resumed"). RESULTS: 31,385 cases were logged utilizing the platform since 2016 by 171 residents across the 3 programs.Intelligent case logging assistance significantly increased case logging rates, from 1.44 ± 1.48 cases by manual entry in P0 to 4.77 ± 2.45 cases per resident per week via the platform in P1 (p-value < 0.00001). Despite the burden of manual data entry when the platform's data connectivity was paused, the tool helped to increase overall case logging into ACGME to 2.85 ± 2.37 cases per week (p-valueâ¯=â¯0.0002). Upon resuming the data connectivity, case logging levels rose to 4.54 ± 3.33 cases per week via the platform, equivalent to P1 levels (insignificant difference, p-valueâ¯=â¯0.57). CONCLUSIONS: Mapping the influence of systems and human factors in high-quality case logs allows us to target interventions to continually improve the training of surgical residents. System level factors such as access to alternate automation-drive tools and operative schedule integrated platforms to assist in ACGME case log has a significant impact on the number of cases captured in logs.
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Cirugía General , Internado y Residencia , Acreditación , Inteligencia Artificial , Automatización , Competencia Clínica , Educación de Postgrado en Medicina , Cirugía General/educación , HumanosRESUMEN
General surgery residents are increasingly exposed to robotic surgery during their training. However, there is no standardized robotic educational curriculum across United States residency programs. Prior to implementing a robotic surgery curriculum, we surveyed our residents and attendings to ascertain their attitude towards robotic surgery training in residency. An anonymous survey was distributed to all general surgery, obstetrics and gynecology (OBGYN), and urology residents, and their respective attending staff at our institution. Responses were compared between residents, attendings, and specialty. Twenty-six (72% response rate) general surgery residents and 18 (47%) subspecialty residents (OBGYN and urology) responded to the survey. Among attendings, 21 general surgery (32%) and 18 subspecialty staff (27%) responded. The majority of general surgery residents and attendings agreed that a robotic surgery curriculum should be implemented in the general surgery residency program (100 vs 86%, p = 0.04). Subspecialty residents also believed a formal curriculum should be implemented within their respective programs (100%). There was no statistically significant difference between general surgery and subspecialty resident responses. The majority of general surgery and subspecialty attendings responded that they would want a robotic surgery curriculum if they were currently residents (76 vs 94%, p = 0.12). The majority of general surgery residents and attendings at our institution believe a robotic surgery curriculum should be offered during residency. This attitude is similar to those of the subspecialty residents and attendings. A surgical education initiative should be developed to create a standardized training program to assure teaching of basic technical skills in robotic surgery before trainees enter clinical practice.
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Cirugía General , Internado y Residencia , Procedimientos Quirúrgicos Robotizados , Urología , Competencia Clínica , Curriculum , Educación de Postgrado en Medicina , Cirugía General/educación , Humanos , Procedimientos Quirúrgicos Robotizados/métodos , Urología/educaciónRESUMEN
PURPOSE: Management of undescended testes (UDT) has evolved over the last decade. While urologic societies in the United States and Europe have established some guidelines for care, management by North American pediatric surgeons remains variable. The aim of this systematic review is to evaluate the published evidence regarding the treatment of (UDT) in children. METHODS: A comprehensive search strategy and the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines were utilized to identify, review, and report salient articles. Five principal questions were asked regarding imaging standards, medical treatment, surgical technique, timing of operation, and outcomes. A literature search was performed from 2005 to 2020. RESULTS: A total of 825 articles were identified in the initial search, and 260 were included in the final review. CONCLUSIONS: Pre-operative imaging and hormonal therapy are generally not recommended except in specific circumstances. Testicular growth and potential for fertility improves when orchiopexy is performed before one year of age. For a palpable testis, a single incision approach is preferred over a two-incision orchiopexy. Laparoscopic orchiopexy is associated with a slightly lower testicular atrophy rate but a higher rate of long-term testicular retraction. One and two-stage Fowler-Stephens orchiopexy have similar rates of testicular atrophy and retraction. There is a higher relative risk of testicular cancer in UDT which may be lessened by pre-pubertal orchiopexy.
Asunto(s)
Criptorquidismo , Neoplasias Testiculares , Atrofia , Niño , Criptorquidismo/cirugía , Práctica Clínica Basada en la Evidencia , Humanos , Lactante , Masculino , Orquidopexia/métodos , Neoplasias Testiculares/cirugía , Testículo/cirugía , Estados UnidosRESUMEN
BACKGROUND: Choledocholithiasis (CDL) management is dictated by local expertise, individual training, and availability of appropriate staff. This study evaluates the management of CDL between urban and rural communities. MATERIALS AND METHODS: Patients undergoing inpatient management of CDL were identified from the 2007 Healthcare Cost and Utilization Project. Availability of endoscopic retrograde cholangiopancreatography (ERCP) was determined from the 2007 American Hospital Association survey. The proportion of common bile duct exploration (CBDE), ERCP, or percutaneous (PERC) interventions were compared across census regions and National Centers for Health Statistics (NCHS) urban-rural classes. The NCHS urban-rural classification scheme divides counties from most populous (NCHS 1) to rural (NCHS 6). Proportions were compared using the 95% confidence interval (95%CI) approach. RESULTS: We estimated 111,021 CDL hospitalizations in the U.S. in 2007. Of these, 67% had a coded intervention. Intervention frequencies were similar across census regions. Comparisons across NCHS classes revealed higher proportions of ERCP in urban areas (NCHS 1-4) while a higher proportion of CBDE was seen in rural areas (NCHS 5-6). ERCP availability was high in metropolitan areas (available in 35%-44% of hospitals NCHS 1-4) and low in rural areas (25% of NCHS 5 hospitals and 5% NCHS 6). PERC management was similar across NCHS classes. CONCLUSIONS: Rural hospitals and communities need surgeons trained in CBDE, where ERCP expertise may not be readily available. Feasible ways of expanding ERCP coverage to the nation's rural areas need to be explored. These observations may impact surgical training at least for those targeting careers in rural surgery.