Why Not This Case? Differences Between Resident and Attending Operative Cases at Teaching Hospitals.

INTRODUCTION: Previous studies have focused on outcomes pertaining to resident operative autonomy, but there has been little academic work examining the types of patients and cases where autonomy is afforded. We sought to describe the differences between surgical patient populations in teaching cases where residents are and are not afforded autonomy. METHODS: We examined all general and vascular operations at Veterans Affairs teaching hospitals from 2004 to 2019 using Veterans Affairs Surgical Quality Improvement Program. Level of resident supervision is prospectively recorded by the operating room nurse at the time of surgery: attending primary (AP): the attending performs the case with or without a resident; attending resident (AR): the resident performs the case with the attending scrubbed; resident primary (RP): resident operating with supervising attending not scrubbed. Resident (R) cases refer to AR + RP. Patient demographics, comorbidities, level of supervision, and top cases within each group were evaluated. RESULTS: A total of 618,578 cases were analyzed; 154,217 (24.9%) were AP, 425,933 (68.9%) AR, and 38,428 (6.2%) RP. Using work relative value unit as a surrogate for complexity, RP was the least complex compared to AP and AR (10.4/14.4/14.8, P < 0.001). RP also had a lower proportion of American Society of Anesthesiologists 3 and 4 + 5 patients (P < 0.001), were younger (P < 0.001), and generally had lower comorbidities. The most common RP cases made up a higher proportion of all RP cases than they did for AP/AR and demonstrated several core competencies (hernia, cholecystectomy, appendectomy, amputation). R cases, however, were generally sicker than AP cases. CONCLUSIONS: In the small proportion of cases where residents were afforded autonomy, we found they were more focused on the core general surgery cases on lower risk patients. This selection bias likely demonstrates appropriate attending judgment in affording autonomy. However, this cohort consisted of many "sicker" patients and those factors alone should not disqualify resident involvement.

Outcomes of umbilical hernia repair in cirrhotic veterans: a VASQIP study.

PURPOSE: Umbilical hernia repair (UHR) in cirrhotics with ascites is a challenging problem associated with increased morbidity and mortality. This study examines the outcomes of UHR in veterans, comparing those undergoing elective versus emergent repair. METHODS: VASQIP was queried for all UHRs during the period 2008-2015. Data collection included demographics, operative details, Model for End-stage Liver Disease (MELD) score, and postoperative outcomes. Univariate and multivariate regression analyses were performed, and a p value of ≤ 0.05 was considered significant. RESULTS: A total of 383 patients were included in the analysis. Overall, mean age was 58.9, 99.0% were males, mean body mass index (BMI) was 26.7 kg/m2, 98.2% had American Society of Anesthesiologists (ASA) classification ≥ III, and 87.7% had independent functional status. More than 1/3 the patients underwent emergent UHR (37.6%). Compared with the elective UHR group, who underwent emergent repair were older, more likely to be functionally dependent, higher MELD score. Hypoalbuminemia, emergency repair and MELD score were found to be independent predictors of poor outcomes. CONCLUSION: UHR in cirrhotic veterans has worse outcomes when performed emergently. Diagnosis should be followed by medical optimization and elective repair, rather than waiting for an emergent indication in > 1/3 of patients.

Resident Involvement in Inguinal Hernia Repair Is Safe but Associated With Increased Operative Time.

INTRODUCTION: Understanding how resident participation in surgery affects outcomes is critical for academic surgeons. The purpose of this study was to evaluate if resident participation was associated with adverse outcomes for inguinal hernia repair. METHODS: We used the Veterans Affairs Surgical Quality Improvement Program to look at 61,737 patients aged ≥18 y who had open inguinal hernia repairs from 1998 to 2018. Propensity weighting was used to compare postoperative complications and operative time for patients having surgery performed by an attending alone versus attending with a postgraduate year (PGY) 1, 3, or 5 residents. RESULTS: There were 29,806 hernias (48%) repaired by an attending, 12,024 (19%) by an intern, 9008 (15%) by a PGY-3 resident, and 10,898 (18%) by a PGY-5 resident. After propensity weighting, there was a 0.13% (95% CI -0.11% to 0.38%, P = 0.29) increase in complications with PGY-1 participation compared to cases performed by attendings alone, a 0.3% increase (95% CI 0.01% to 0.59%, P = 0.04) for PGY-3 residents, and a 0.4% increase (95% CI 0.11% to 0.69%, P = 0.007) for PGY-5 residents. There was also an increase in operative time of 26 min (95% CI 25 to 27, P < 0.001) with PGY-1 participation, 19 min (95% CI 18 to 20, P < 0.001) with PGY-3 participation, and 23 min (95% CI 22 to 24, P < 0.001) with PGY-5 participation. CONCLUSIONS: Resident involvement in inguinal hernia surgery was associated with a significant increase in operative time but had a minimal impact on postoperative complications. Although resident participation in hernia surgery is safe, surgical programs should focus on enhancing operative efficiency for residents.

Non-Cardiac Perioperative Mortality Factors at a Single Urban Veterans Affairs Medical Center.

Background: The Veterans affairs (VA) surgical quality improvement program was established to evaluate the quality of VA surgical care to over nine million United States Veterans. Patient demographics vary by region, with urban areas correlating with higher mortality rates. This study attempts to determine the factors associated with 30-day mortality at a single VA medical center in an urban setting. Methods: Patients included in the study were at least 18 years of age and underwent a surgical procedure between January 2013 and June 2023. Baseline demographics included preoperative comorbidities, American Society of Anesthesiology (ASA) class, and preoperative lab values. Clinical outcomes included postoperative mortality within 30 days of the procedure. Chi-square, t-test, ANOVA, and multivariate logistic regressions were used to determine relationships, using P < .05 to determine significance. Results: A total of 11,547 patients with complete data were included, of which 92 patients (0.8%) died within 30 days of surgery. A higher preoperative hematocrit was protective against 30-day mortality. A perioperative transfusion, bleeding disorder, chronic obstructive pulmonary disease (COPD), history of a myocardial infarction, higher ASA class, and an emergency procedure all increased the likelihood of perioperative mortality. Conclusions: Veterans who seek surgical care at Veterans Health Administration centers receive high quality care with a low mortality rate. Identifying risk factors for perioperative mortality provides the opportunity to stratify those veterans at highest risk.

Attitudes about use of preoperative risk assessment tools: a survey of surgeons and surgical residents in an academic health system.

BACKGROUND: Formal surgical risk assessment tools have been developed to predict risk of adverse postoperative patient outcomes. Such tools accurately predict common postoperative complications, inform patients and providers of likely perioperative outcomes, guide decision making, and improve patient care. However, these are underutilized. We studied the attitudes towards and techniques of how surgeons preoperatively assess risk. METHODS: Surgeons at a large academic tertiary referral hospital and affiliate community hospitals were emailed a 16-question survey via REDCap (Research Electronic Data Capture) between 8/2019-6/2020. Reminder emails were sent once weekly for three weeks. All completed surveys by surgical residents and attendings were included; incomplete surveys were excluded. Surveys were analyzed using descriptive statistics (frequency distributions and percentages for categorical variables, means, and standard deviations for continuous variables), and Fisher's exact test and unpaired t-tests comparing responses by surgical attendings vs. residents. RESULTS: A total of 108 surgical faculty, 95 surgical residents, and 58 affiliate surgeons were emailed the survey. Overall response rates were 50.0% for faculty surgeons, 47.4% for residents, and 36.2% for affiliate surgeons. Only 20.8% of surgeons used risk calculators most or all of the time. Attending surgeons were more likely to use prior experience and current literature while residents used risk calculators more frequently. Risk assessment tools were more likely to be used when predicting major complications and death in older patients with significant risk factors. Greatest barriers for use of risk assessment tools included time, inaccessibility, and trust in accuracy. CONCLUSIONS: A small percentage of surgeons use surgical risk calculators as part of their routine practice. Time, inaccessibility, and trust in accuracy were the most significant barriers to use.

Homelessness and Race are Mortality Predictors in US Veterans Undergoing CABG.

Coronary artery disease requiring surgical revascularization is prevalent in United States Veterans. We aimed to investigate preoperative predictors of 30-day mortality following coronary artery bypass grafting (CABG) in the Veteran population. The Veterans Affairs Surgical Quality Improvement (VASQIP) national database was queried for isolated CABG cases between 2008 and 2018. The primary outcome was 30-day mortality. A multivariable logistic regression was performed to assess for independent predictors of the primary outcome. A P-value of <0.05 was considered statistically significant. A total of 32,711 patients were included. The 30-day mortality rate was 1.37%. Multivariable analysis identified the following predictors of 30-day mortality: African-American race (OR 1.46, 95% CI 1.09-1.96); homelessness (OR 6.49, 95% CI 3.39-12.45); female sex (OR 2.15, 95% CI 1.08-4.30); preoperative myocardial infarction within 7 days (OR 1.49, 95% CI 1.06-2.10) or more than 7 days before CABG (OR 1.34, 95% CI 1.04-1.72); partially/fully dependent functional status (OR 1.44, 95% CI 1.07-1.93); chronic obstructive pulmonary disease (OR 1.54, 95% CI 1.24-1.92); mild (OR 1.48, 95% CI 1.04-2.11) and severe aortic stenosis (OR 2.06, 95% CI 1.37-3.09); moderate (OR 1.88, 95% CI 1.31-2.72), or severe (OR 2.99, 95% CI 1.71-5.22) mitral regurgitation; cardiomegaly (OR 1.73, 95% CI 1.35-2.22); NYHA Class III/IV heart failure (OR 2.05, 95% CI 1.10-3.83); and urgent/emergent operation (OR 1.42, 95% CI 1.08-1.87). The 30-day mortality rate in US Veterans undergoing isolated CABG between 2008 and 2018 was 1.37%. In addition to established clinical factors, African-American race and homelessness were independent demographic predictors of 30-day mortality.

Cholecystectomy Outcomes in the Veterans Affairs Surgical Quality Improvement Program (2006-2017).

Background: Cholecystectomy trends and outcomes have been reported extensively in the private sector. Despite being one of the most common procedures performed in the United States, there is a paucity of reports on the trends and outcomes of laparoscopic and open cholecystectomy in the veteran population. Materials and Methods: Veterans who underwent laparoscopic or open cholecystectomy from 2006 to 2017 were identified using current procedural terminology codes from the Veterans Affairs Surgical Quality Improvement Program (VASQIP) database. Multivariable analyses were used to compare laparoscopic and open outcomes. The primary outcome was mortality, and secondary outcomes were postoperative complications and length of stay (LOS). Results: In the VASQIP database, 53,901 patients underwent laparoscopic cholecystectomy and 8011 patients underwent open cholecystectomy during the study period. The laparoscopic approach increased from 82.0% (2006-2008) to 91.9% (2015-2017). Postoperatively, the open group had a significantly higher morbidity rate (15.4% versus 3.8%, P < .001). The 30-day mortality rate and mean LOS were also significantly higher in the open cholecystectomy group (P < .001). Earlier year of operation, diabetes diagnosis, and open approach significantly increased the likelihood of postoperative morbidity (P < .05). Conclusions: Similar to the private sector, minimally invasive cholecystectomy in the Veterans Health Administration (VHA) has increased over the last two decades. Diabetes was present in a significant percentage of the veteran population and was a predictor of all postoperative complications. Finally, the clinical outcomes in the VHA are comparable with those documented in the private sector.

General Surgical Resident Operative Autonomy vs Patient Outcomes: Are we Compromising Training without Net Benefit to Hospitals or Patients?

OBJECTIVE: Resident operative autonomy has been steadily declining. The reasons are multifactorial and include concerns related to patient safety and operating room efficiency. Simultaneously, faculty have expressed that residents are less prepared for independent practice. We sought to understand the effect of decreasing resident autonomy on patient outcomes and operative duration. DESIGN: Retrospective study utilizing the Veterans Affairs Surgical Quality Improvement Program (VASQIP) database. SETTING: Operative cases within the VASQIP database from July 1, 2004-September 30, 2019 were analyzed. PARTICIPANTS: All adult patients who underwent a surgical procedure from July 1, 2004 to September 30, 2019 were analyzed. The subpopulation of patients that underwent a surgical procedure in General Surgery or Peripheral Vascular Surgery were identified based on the code of the specialty surgeon. Within these subgroups, the most frequent cases by current procedural terminology (CPT) code were selected for study inclusion. The principle CPT code of all cases was further coded by level of supervision: attending primary surgeon (AP); attending and resident (AR), or resident primary with the attending supervising but not scrubbed (RP). Baseline demographics, operative variables, and outcomes were compared between groups. RESULTS: The VASQIP database included 698,391 total general/vascular surgery cases. 38,483 (6%) of them were RP cases. Analysis revealed that the top 5 RP cases account for 73% of total RP volume-these include: 1) Hernias (55% total; 33% open inguinal, 13% umbilical, 5% open ventral/incisional, and 4% laparoscopic) 2) cholecystectomy (18%), 3) Amputations (17% total; 10% above knee, 7% below knee), 4) Appendectomy (7%) and 5) Open colectomy (3%). The percentage of cases at teaching hospitals that were RP cases significantly decreased from 15% in 2004 to 5% in 2019 (p < 0.001). RP cases were generally sicker as demonstrated by higher ASA classifications and more likely to be emergent cases. Operative times were also increased with resident involvement, but RP cases were faster than AR cases on average. After adjusting for baseline demographics, case type, and year of procedure, mortality was no different between groups. Complications were higher in the AR group but not in the RP group. CONCLUSIONS: The rate of resident autonomy in routine general surgery cases has decreased by two-thirds over the 15-year study period. Cases performed by residents without an attending surgeon scrubbed were performed faster than cases performed by a resident and attending together and there was no increase in patient morbidity or mortality when residents performed cases independently. The erosion of resident autonomy is not justified based upon operative time or patient outcomes. Efforts to increase surgical resident operative autonomy are needed.

Elective surgery for diverticular disease in U.S. veterans: A VASQIP study of national trends and outcomes from 2004 to 2018.

BACKGROUND: Treatment for diverticular disease has evolved over time. In the United States, there has been a trend towards minimally invasive surgical approaches and fewer postoperative complications, but no study has investigated this subject in the Veterans Health Administration. METHODS: This retrospective review identified patients undergoing elective surgery for diverticular disease from 2004 to 2018. Demographics, comorbidities, operative approach, rates of ostomy creation, and 30-day outcomes were compared. The 15-year time period was divided into 3-year increments to assess changes over time. RESULTS: 4198 patients were identified. Complication rate decreased significantly over time (28.1%-15.7%, p < 0.001), as did infectious complications (21.5-6.3%, p < 0.001). Median hospital length-of-stay decreased from 7 to 5 days (p < 0.001). Rates of laparoscopic surgery increased over time (17.7%-48.1%, p < 0.001). CONCLUSIONS: Increased utilization of laparoscopy in veterans undergoing elective surgery for diverticular disease coincided with fewer complications and a shorter length-of-stay. These trends mirror outcomes reported in non-veterans.

Outcomes of Paraesophageal Hernia Repair: Analysis of the Veterans Affairs Surgical Quality Improvement Program Database.

BACKGROUND: While there have been many outcome studies on paraesophageal hernia repair in the civilian population, there is sparse recent data on the veteran population. This study analyzes the mortality and morbidities of veterans who underwent paraesophageal hernia repair in the Veterans Affairs Surgical Quality Improvement Program database. METHODS: Veterans who underwent paraesophageal hernia repair from 2010 to 2017 were identified using Current Procedural Terminology codes. Multivariable analysis was used to compare laparoscopic and open, including abdominal and thoracic approaches, groups. The outcomes were postoperative complications and mortality. RESULTS: There were 1607 patients in the laparoscopic group and 366 in the open group, with 84.1% men and mean age of 61 years. Gender and body mass index did not influence the type of surgical approach. The mortality rates at 30 and 180 days were 0.5% and 0.7%, respectively. Postoperative complications, including reintubation (2.2%), pneumonia (2.0%), intubation > 48 h (2.0%), and sepsis (2.0%) were higher in the open group (15.9% versus 7.2%, p < 0.001). The laparoscopic group had a significantly shorter length of stay (4.3 versus 9.6 days, p < 0.001) and a lower percentage of return to surgery within 30 days (3.9% versus 8.2%, p < 0.001) than the open group. The ratio of open versus laparoscopic paraesophageal hernia repairs varied significantly by different Veterans Integrated Services Network regions. CONCLUSIONS: Veterans undergoing laparoscopic paraesophageal hernia repair experience similar outcomes as patients in the private sector. Veterans who underwent laparoscopic paraesophageal hernia repair had significantly less complications compared to an open approach even after adjusting for patient comorbidities and demographics. The difference in open versus laparoscopic practices between various regions requires further investigation.

A frailty index identifies patients at high risk of mortality after tracheostomy.

OBJECTIVE: To evaluate the utility of a modified frailty index as an indicator of postoperative mortality in patients undergoing tracheostomy. STUDY DESIGN: Case series with chart review. SETTING: Tertiary care veterans hospital. SUBJECTS AND METHODS: A chart review was conducted of consecutive tracheostomies performed between April 2007 and September 2012. A modified frailty index consisting of 11 items based on the Revised Minimum Data Set Mortality Rating Index (MMRI-R) was retrospectively applied using the patient's status immediately prior to tracheostomy. The resultant 6-month calculated mortality risk was compared with both the Veterans Health Administration Surgical Quality Improvement Program's (VASQIP) 30-day calculated mortality and actual mortality. RESULTS: One hundred consecutive tracheostomies were analyzed. No patients were excluded. Sixty-nine patients died within the study period, with 1-, 6-, and 12-month mortality rates of 25%, 43%, and 59%, respectively. The average calculated 6-month mortality risk using the modified frailty index was 40.5% for nonsurvivors compared with 25.4% for survivors (P = .001). Both the VASQIP calculator and modified frailty index differentiated mortality risks between patients without head and neck cancer who survived less than 6 months versus those who survived longer than 6 months (P = .006 and .01). However, neither the VASQIP nor the modified frailty index differentiated mortality risks for head and neck cancer patients who survived less than 6 months versus greater than 6 months (P = .94 and .26). CONCLUSION: A modified frailty index identifies patients without head and neck cancer at high risk of postoperative mortality after tracheostomy.

Choice of intravenous antibiotic prophylaxis for colorectal surgery does matter.

BACKGROUND: The Surgical Care Improvement Program endorses mandatory compliance with approved intravenous prophylactic antibiotics; however, oral antibiotics are optional. We hypothesized that surgical site infection (SSI) rates may vary depending on the choice of antibiotic prophylaxis. STUDY DESIGN: A retrospective cohort study of elective colorectal procedures using Veterans Affairs Surgical Quality Improvement Program (VASQIP) and SSI outcomes data was linked to the Office of Informatics and Analytics (OIA) and Pharmacy Benefits Management (PBM) antibiotic data from 2005 to 2009. Surgical site infection rates by type of IV antibiotic agent alone (IV) or in combination with oral antibiotic (IV + OA) were determined. Generalized estimating equations were used to examine the association between type of antibiotic prophylaxis and SSI for the entire cohort and stratified by use of oral antibiotics. RESULTS: After 5,750 elective colorectal procedures, 709 SSIs (12.3%) developed within 30 days. Oral antibiotic + IV (n = 2,426) had a lower SSI rate than IV alone (n = 3,324) (6.3% vs 16.7%, p < 0.0001). There was a significant difference in the SSI rate based on type of preoperative IV antibiotic given (p ≤ 0.0001). Generalized estimating equations adjusting for significant covariates of age, body mass index, procedure work relative value units, and operation duration demonstrated an independent protective effect of oral antibiotics (odds ratio [OR] 0.37, 95% CI 0.29 to 0.46), as well as increased rates of SSI associated with ampicillin/sulbactam (OR 2.21, 95% CI 1.37 to 3.56) and second generation cephalosporins (cefoxitin, OR 2.50, 95% CI 1.83 to 3.42; cefotetan, OR 2.70, 95% CI 1.72 to 4.22) when compared with first generation cephalosporin/metronidazole. CONCLUSIONS: The choice of IV antibiotic was related to the SSI rate; however, oral antibiotics were associated with reduced SSI rate for every antibiotic class.

Optimizing ACS NSQIP modeling for evaluation of surgical quality and risk: patient risk adjustment, procedure mix adjustment, shrinkage adjustment, and surgical focus.

The American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP) collects detailed clinical data from participating hospitals using standardized data definitions, analyzes these data, and provides participating hospitals with reports that permit risk-adjusted comparisons with a surgical quality standard. Since its inception, the ACS NSQIP has worked to refine surgical outcomes measurements and enhance statistical methods to improve the reliability and validity of this hospital profiling. From an original focus on controlling for between-hospital differences in patient risk factors with logistic regression, ACS NSQIP has added a variable to better adjust for the complexity and risk profile of surgical procedures (procedure mix adjustment) and stabilized estimates derived from small samples by using a hierarchical model with shrinkage adjustment. New models have been developed focusing on specific surgical procedures (eg, "Procedure Targeted" models), which provide opportunities to incorporate indication and other procedure-specific variables and outcomes to improve risk adjustment. In addition, comparative benchmark reports given to participating hospitals have been expanded considerably to allow more detailed evaluations of performance. Finally, procedures have been developed to estimate surgical risk for individual patients. This article describes the development of, and justification for, these new statistical methods and reporting strategies in ACS NSQIP.