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.

Did Residents Stop Operating During COVID? Impact of COVID-19 Across VA Teaching Hospitals on Surgical Resident Education.

BACKGROUND: During the COVID-19 pandemic, elective cases across the nation were suspended, leading to major decreases in operative volume for surgical trainees. Surgical resident operative autonomy has been declining over time, so we sought to explore the effect COVID-19 had on resident autonomy within VA teaching hospitals. METHODS: A retrospective analysis of surgical cases across specialties was performed using the VA Surgical Quality Improvement Program database from September 2019 to September 2021 at VA teaching hospitals. Supervision codes are recorded prospectively: attending surgeon performs the operation (AP), resident completes majority of the case with the attending scrubbed (AR), and resident is primary surgeon without attending scrubbed (RP). RESULTS: 20,457 cases pre-COVID decreased to 11,035 during peak-COVID (P < .001). Overall, RP cases increased from 6.5% to 7.6% during the peak (P < .001) and trended back downwards during the recovery periods. AP decreased initially (29.9%-27.7%, P < .001), but regressed back to pre-pandemic numbers. In general surgery RP cases, urgent cases such as laparoscopic cholecystectomies increased from 18.8% to 27.5%, while elective repairs decreased during the peak. Similar changes were noted across specialties. DISCUSSION: Operative cases dropped by half from pre- to peak- COVID and remained 20% below pre-pandemic volume the following year. Interestingly, RP rates increased for several specialties during the peak of the pandemic, which may have resulted from a relative higher ratio of resident personnel:case volume and shift in case distribution from elective to urgent. The increase in RP rate has begun to regress to pre-COVID levels which need to be readdressed.

A Multimodal Approach to Control of Massive Hemorrhage Secondary to Rectal Cancer.

The management of patients with symptomatic rectal masses can be challenging and is further complicated in cases of advanced age, comorbidities, prior surgeries, and acute hemorrhage. In this report, we describe a patient who presented with massive hemorrhage from a 7 cm low rectal tumor with subsequent cardiac arrest. After return of spontaneous circulation, emergent pelvic angiography identified extensive tumor enhancement and blush off the anterior division of the right internal iliac artery from multiple parasitized vessels. The right internal iliac artery was embolized with multiple microcoils to decrease the tumor blood supply and slow the rate of bleeding. The patient was then taken directly from the angiography suite to radiation oncology for planning CT, and within several hours, underwent his first session of radiation. In conjunction with angioembolization, short-course radiation therapy can be an effective treatment modality for advanced bleeding rectal tumors not amenable to surgical resection.

Declining Surgical Resident Operative Autonomy-All Trainees Are Not Created Equal.

INTRODUCTION: We have previously shown that resident autonomy has decreased over time overall for all surgery residents. The purpose of this study is to examine changes in operative autonomy in general surgery residency within each postgraduate year (PGY) level. MATERIALS AND METHODS: This is a retrospective analysis of the Veterans Association Surgical Quality Improvement Program database from July 1, 2004 to September 30, 2019. All general surgery, vascular surgery, and thoracic surgery procedures were analyzed and categorized by level of resident supervision as attending primary, attending operating with resident, or resident primary without attending scrubbed. Procedure work portion of relative value unit was used to capture procedure complexity. Changes in resident autonomy over time, procedure complexity, and outcomes were compared among PGY levels 1 to 5. RESULTS: A total of 385,482 cases were analyzed. At each PGY level from 2014 to 2018, the relative decrease in resident primary cases ranged from -37.3% (PGY 4) to -75.5% (PGY 3). Mean work portion of relative value unit saw steady increase with PGY level (8.4 ± 3.5 in PGY 1 to 10.8 ± 5.7 in PGY 5, P < 0.001) and did not show a trend over time. CONCLUSIONS: Surgical resident operative autonomy has markedly decreased over time across all PGY levels. This effect is most profound at the PGY 3 level, while more senior residents are affected to a lesser degree. Case complexity show PGY level-appropriate increase in resident autonomous cases. Decrease in resident autonomy over time is not associated with changes in case complexity.

Changing the Landscape of Remediation: The Creation and Implementation of an Institution-Wide Graduate Medical Education Performance Enhancement Program.

Purpose Remediation is a daunting process for both residency leadership and trainees due to several factors including limited time and resources, variable processes, and negative stigma. Our objective was to transform the remediation process by creating a transparent institution-wide program that collates tools/resources, interdepartmental faculty mentors, and positive rebranding. Methods Education leadership across seven specialties created a process for trainees with professionalism and interpersonal-communication skills deficiencies. Formalized departmental program-based improvement plan (PIP) and an institutional house staff performance enhancement plan (HPEP) were developed by consensus of triggers/behaviors. Utilizing published literature, a toolkit was created and implemented. Trainees were enrolled in HPEP if PIP was unsuccessful or exhibited ≥1 major trigger. Wellness evaluations were incorporated into the process to screen for external contributing factors. Surveys were sent to the program director (PD), faculty mentor, and trainee one month and six months after participation. Results Between 2018 and 2021, 12 trainees were enrolled. Overall feedback from PDs and the trainees was positive. The main challenge was finding mutual time for the faculty mentor and trainee to meet. Six-month surveys reported no relapses in unprofessionalism. One-year follow-up of the trainees was limited. Conclusions Utilizing an institution-wide standardized process of performance improvement with the removal of negative stereotyping is a unique approach to remediation. Initial feedback is promising, and future outcome data are necessary to assess the utility. The HPEP may be adopted by other academic institutions and may shift the attitudes about remediation and allow trainees to see the process as an opportunity for professional growth.

Anterior Abdominal Varicosities Due to Unilateral Common and External Iliac Vein Occlusion Five Decades Post-Injury.

Abdominopelvic varicosities are a rare occurrence after traumatic venous injuries. Several disorders exist that present with abdominopelvic varicosities such as May-Thurner syndrome, pelvic congestion syndrome, and nutcracker syndrome; however, it has rarely been described after trauma.1 We present a case in 70-year-old male, who in 1974 sustained a penetrating injury from fragments secondary to mortar explosion, requiring exploratory laparotomy. He presented to the hospital with abdominopelvic varicosities that began 20 years after the incident and was asymptomatic at initial presentation. While there is a known case report of congenital absence of a common iliac vein in a young, healthy, athletic man who developed abdominopelvic varicosities, this is the first case report, to our knowledge, of evolution of a traumatic injury of this nature over a lifetime. Pathophysiology, diagnostics, risks of ligation, and management of chronic abdominopelvic varicosities in this patient are discussed.

Surgical resident operative autonomy on nights and weekends: What happens to surgical education during off-hours?

BACKGROUND: Surgical resident operative autonomy is critical for trainee maturation to independence. Acute care surgery (ACS) cases commonly occur off-hours and tension between operating room availability and on-call staff can affect resident operative autonomy. We examined operative resident autonomy for general, vascular, and thoracic (GVT) surgery during nights and weekends. We hypothesized that residents would be afforded less operative autonomy during off - hours than weekdays. METHODS: This retrospective cohort study uses the Veterans Affairs Surgical Quality Improvement Program database, we examined all GVT cases at Veterans Affairs teaching hospitals from 2004 to 2019. All cases are coded for the level of supervision at the time of surgery: AP, attending primary surgeon; AR, attending and resident operating together; and RP, resident primary (attending supervising but not scrubbed). Cases starting between 6 pm to 7 am Monday through Friday were considered nights, cases on Saturday/Sunday were considered weekends, and collectively considered "off-hours." Resident primary case rates were compared by start time and type. RESULTS: Over the 15-year study period, there were 666,421 GVT cases performed with 38,097 cases (6%) performed off-hours. During off-hours, 31,396 (83%) were ACS compared with 5% of daytime cases. Overall, off-hours cases have higher RP rate than daytime cases (6.8% vs. 5.8%, p < 0.001). Daytime ACS cases have higher rates of RP than nights/weekends (7.6% vs. 6.8%, p < 0.001). Conversely, daytime elective cases have lower RP than nights (5.7% vs. 7.9%, p < 0.001). During off-hours, there are more RP cases on nights compared with weekends (7.1% vs. 6.5%, p = 0.02). CONCLUSION: Overall, residents were afforded more operative autonomy during off-hours, with nights having greater RP than weekends. In contrast, ACS cases have more autonomy during weekdays. These data have potentially significant implications for ACS service staffing, night float rotations, and overall resident operative experience on ACS services. LEVEL OF EVIDENCE/STUDY TYPE: Prognostic and Epidemiological; Level III.

A Resident-Driven Mobile Evaluation System Can Be Used to Augment Traditional Surgery Rotation Evaluations.

BACKGROUND: The Accreditation Council for Graduate Medical Education requires residents to receive milestone-based evaluations in key areas. Shortcomings of the traditional evaluation system (TES) are a low completion rate and delay in completion. We hypothesized that adoption of a mobile evaluation system (MES) would increase the number of evaluations completed and improve their timeliness. METHODS: Traditional evaluations for a general surgery residency program were converted into a web-based form via a widely available, free, and secure application and implemented in August 2017. After 8 months, MES data were analyzed and compared to that of our TES. RESULTS: 122 mobile evaluations were completed; 20% were solicited by residents. Introduction of the MES resulted in an increased number of evaluations per resident (P = .0028) and proportion of faculty completing evaluations (P = .0220). Timeliness also improved, with 71% of evaluations being completed during one's clinical rotation. CONCLUSIONS: A resident-driven MES is an inexpensive and effective method to augment traditional end-of-rotation evaluations.

Declining Resident Surgical Autonomy and Improving Surgical Outcomes: Correlation Does Not Equal Causality.

OBJECTIVE: The volume of cases that residents perform independently have decreased leaving graduating chief residents less prepared for independent practice. Outcomes are not worse when residents are given autonomy with appropriate supervision, however it is unknown if outcomes are worsening with decreasing operative autonomy experience. We hypothesize that resident autonomous cases parallel the improving outcomes in surgical care over time, however, are less complex and on lower acuity patients. DESIGN: Retrospective study utilizing the Veterans Affairs Surgical Quality Improvement Program (VASQIP) database. SETTING: Operative cases performed on teaching services within the VASQIP database from July 1, 2004 to September 30, 2019, were included. PARTICIPANTS: All adult patients who underwent a surgical procedure from July 1, 2004, to September 30, 2019, at a VA hospital on a service that included residents were initially included. After inclusions and exclusions, there were 1,346,461 cases. Cases were divided into 3 sequential 5 year eras (ERA 1: 2004-2008 n = 415,614, ERA 2: 2009-2013 n = 478,528, and ERA 3: 2014-2019 n = 452,319). The main exposure of interest was level of resident supervision, coded at the time of procedure as: attending primary surgeon (AP); attending and resident (AR), or resident primary with the attending supervising but not scrubbed (RP). We compared 30 day all-cause mortality, composite morbidity, work relative value unit (wRVU), hospital length of stay, and operative time between each ERA for RP cases, as well as within each ERA for RP cases compared to AR and AP cases. RESULTS: There was a progressive decline in the rate of RP cases in each successive ERA (ERA 1: 58,249 (14.0%) vs ERA 2: 47,891 (10.0%) vs ERA 3: 35,352 (7.8%), p < 0.001). For RP cases, patients were progressively getting older (60 yrs [53-71] vs 63 yrs [54-69] vs 66 yrs [57-72], p < 0.001) and sicker (ASA 3 58.7% vs 62.5% vs 66.2% and ASA 4/5 8.4% vs 9.6% vs10.0%, p < 0.001). Odds of mortality decreased in each ERA compared to the previous (aOR 0.71 [0.62-0.80] ERA 2 vs ERA 1 and 0.82 [0.70-0.97] ERA 3 vs ERA 2) as did morbidity (0.77 [0.73-0.82] ERA 2 vs ERA 1 and 0.72 [0.68-0.77] ERA 3 vs ERA 2). Operative and length of stay also decreased while wRVU stayed unchanged. When comparing RP cases to AP and AR within each ERA, RP cases tended to be on younger and healthier patients with a lower wRVU, particularly compared to AR cases. Mortality and morbidity were no different or better in RP compared to AR and AP. CONCLUSIONS: Despite resident autonomy decreasing, outcomes in cases where they are afforded autonomy are improving over time. This despite RP cases being on sicker and older patients and performing roughly the same complexity of cases. They also continue to perform no worse than cases with higher levels of supervision. Efforts to increase surgical resident operative autonomy are still needed to improve readiness for independent practice.

Declining Surgical Resident Operative Autonomy in Acute Care Surgical Cases.

INTRODUCTION: Surgical resident operative autonomy has decreased markedly over time, reducing resident readiness for independent practice. We sought to examine operative resident autonomy for emergency acute care surgery (ACS) compared to elective cases and associated patient outcomes at veterans affairs hospitals. METHODS: The Veterans Affairs Surgical Quality Improvement Program database was queried for ACS cases (emergency general, vascular, and thoracic) at veterans affairs hospitals from 2004 to 2019. Cases are coded prospectively for the level of supervision: attending primary surgeon (AP); attending scrubbed with resident surgeon (AR); resident primary (RP), attending not scrubbed. Baseline demographics, operative variables, and outcomes were compared. RESULTS: A total of 61,275 ACS cases and 605,146 elective cases were performed during the study period. The ACS had a higher proportion of RP cases (7.2% versus 5.7%, P < 0.001). The proportion of ACS RP cases decreased from 9.9% to 4.1% (58.6%); elective RP cases decreased from 8.9% to 2.9% (67.4%). The most common ACS RP surgeries were appendectomy, amputations, and cholecystectomy. RP cases had lower American Society of Anesthesia class and lower median work relative value units than AP and AR. There was no difference between mortality rates of RP compared to AP (adjusted odds ratio [OR] 0.94 [0.80-1.09] or AR 0.94 [0.81-1.08]). While there was no difference in complications between the RP and AP (OR 1.01 [0.92-1.12]), there were significantly more complications in AR compared to RP (OR 1.20 [1.10-1.31]). CONCLUSIONS: More autonomy is granted for ACS cases compared to elective cases. While both decreased over time, the decrease is less for ACS cases. Resident autonomy does not negatively impact outcomes, even in emergent cases.

Patient inequities in affording surgical resident operative autonomy at Veterans Affairs teaching hospitals, does it extend to female patients?

BACKGROUND: Examining surgical resident operative autonomy within the Veterans Affairs (VA) System, we previously showed residents were afforded autonomy more frequently on Black patients. We hypothesized that, compared to males, female surgical patients receive less attending involvement and more resident autonomy during surgery. METHODS: Retrospective review of all general/vascular surgeries performed at teaching VA hospitals from 2004 to 2019. Operative procedures are coded at the time of surgery as attending primary surgeon (AP), attending with resident (AR), or resident primary surgeon--attending not scrubbed (RP). The primary outcome was the difference in supervision rates between patient sexes. RESULTS: 618,578 operations were examined-24.9% AP, 68.9% AR, and 6.2% RP. Overall, 5.9% of cases were performed on women. The rate of RP cases was higher in males compared to females (6.3% vs 5.3%, p < 0.001). CONCLUSION: Female veterans are less likely to have residents operate on them autonomously. Reasons for this require further characterization.

Increasing volume but declining resident autonomy in laparoscopic inguinal hernia repair: an inverse relationship.

INTRODUCTION: With improved technology and technique, laparoscopic inguinal hernia repair (LIHR) has become a valid option for repairing both initial and recurrent inguinal hernia. Surgical residents must learn both techniques to prepare for future practice. We examined resident operative autonomy between LIHR and open inguinal hernia repair (OIHR) across the Veterans Affairs (VA) system. METHODS: Utilizing the VA Surgical Quality Improvement Program database, we examined inguinal hernia repairs based on the principal procedure code at all teaching VA hospitals from July 2004 to September 2019. All VA cases are coded for level of supervision at the time of surgery: attending primary surgeon (AP); attending scrubbed but resident is a primary surgeon (AR), and resident primary with attending supervising but not scrubbed (RP). Primary outcomes were the proportion of LIHR versus OIHR and resident autonomy over time. RESULTS: A total of 127,497 hernia repair cases were examined (106,892 OIHR and 20,605 LIHR). There was a higher proportion of RP (8.7% vs 2.2%) and lower proportion of AP (23.9% vs 28.4%) within OIHR compared to LIHR (p < 0.001). The overall proportion of LIHR repairs increased from 9 to 28% (p < 0.001). RP cases decreased for LIHR from 9 to 1% and for OIHR from 17 to 4%, while AP cases increased for LIHR from 16 to 42% and for OIHR from 18 to 30% (all p < 0.001). For RP cases, mortality (0 vs 0.2%, p > 0.99) and complication rates (1.1% vs. 1.7%, p = 0.35) were no different. CONCLUSIONS: LIHR at VA hospitals has tripled over the past 15 years, now compromising nearly one-third of all inguinal hernia repairs; the majority are initial hernias. Despite this increase, resident autonomy in LIHR cases declined alarmingly. The results demonstrate an urgent need to integrate enhanced minimally invasive training into a general surgery curriculum to prepare residents for future independent practice.

General Surgery Resident Complement and Operative Autonomy - Size Matters.

OBJECTIVE: Operative autonomy has progressively decreased for surgery residents. This study investigates the effect of general surgery resident complement size at Veterans Affairs (VA) hospitals on operative autonomy for the residents. We hypothesize that smaller complements of residents would result in fewer opportunities for operative autonomy. DESIGN: Retrospective analysis of the Veterans Affairs Surgical Quality Improvement Program (VASQIP) database. SETTING: Operative cases within the VASQIP database from July 1, 2004 to September 30, 2019 were analyzed. PARTICIPANTS: All general surgery procedures performed at teaching VA hospitals from January 2004 to September 2019 were included. The level of resident operative autonomy is defined as follows: attending primary surgeon with or without a resident (AP), resident primary surgeon with attending scrubbed (AR), and resident primary without attending scrubbed (RP). Resident complement is based on funded resident positions at each VA hospital during the academic year 2017-2018 and stratified into 3 groups: small (≤4), medium (>4-<7), and large (≥7). The primary outcome was the proportion of operative autonomy for each resident complement group. Secondary outcomes were level of autonomy over time, and mortality and morbidity for RP procedures. Categorical data were compared with Chi-squared test. RESULTS: Four hundred sixty-one thousand seven hundred thirty-four procedures across 92 VA hospitals with general surgery residents were included in the analysis. There were 126,062 cases performed at 29 small resident complement hospitals, 135,539 at 28 medium resident complement hospitals, and 200,133 at 35 large resident complement hospitals. The percentage of RP procedures was higher with increasing resident complement (2.1% vs 6.8% vs 9.9%, p < 0.001). RP procedures have decreased over time in all groups, but the relative decrease was less pronounced as resident complement increased (79.5% vs 73.3% vs 64.7%, p < 0.001). There was no significant difference in adjusted 30-day all-cause mortality between groups. CONCLUSIONS: Increased resident complement at VA hospitals is associated with increased resident autonomy in resident primary procedures. Resident autonomy has decreased over time regardless of complement size, but it is less dramatic at sites with more residents. Increasing resident complement at a site may improve operative autonomy, leading to an improved educational experience for surgical residents.

Sigmoid Colectomy for Sigmoid Volvulus Through a Limited Left Lower Quadrant Transverse Laparotomy Incision Without Laparoscopy.

Sigmoid volvulus (SV) is a relatively rare cause of large bowel obstruction encountered by general surgeons in the United States. It predominantly affects the elderly, infirm, and institutionalized. Surgery after endoscopic reduction is the mainstay of treatment. Given the frail nature of the population requiring partial colectomy for SV, formal laparotomy and laparoscopic sigmoid colectomies come with significant risks. Much of the risk related to a minimally invasive, laparoscopic approach is due to the physiologic impacts of pneumoperitoneum. This series demonstrates a technique whereby a complete sigmoid resection with or without anastomosis can be achieved via a single, small incision equivalent to a laparoscopic extraction port. This technique took advantage of the redundancy in the sigmoid colon characteristic of SV. All patients tolerated their procedures well and had rapid return to their baseline function.

Resident Endoscopy Experience Correlates Poorly with Performance on a Virtual Reality Simulator.

Background Endoscopy training has become increasingly emphasized during general surgery residency as reflected by introduction of the Fundamentals of Endoscopic Surgery (FES) examination, which includes testing of skills on virtual reality (VR) simulators. Although studies exist to assess the ability of the simulator to differentiate between novices and experienced endoscopists, it is not well understood how simulators can differentiate skills among resident cohort. Objective To assess the utility of the VR simulator, we evaluated the correlation between resident endoscopy experience and performance on two VR simulator colonoscopy modules on the GI-BRONCH Mentor (Simbionix Ltd, Airport City, Israel). Methods Postgraduate years 2 to 5 residents completed "easy" and "difficult" VR colonoscopies, and performance metrics were recorded from October 2017 to February 2018 at Rutgers' two general surgery residency programs. Resident endoscopy experience was obtained through Accreditation Council for Graduate Medical Education case logs. Correlations between resident endoscopy experience and VR colonoscopy performance metrics were assessed using Spearman's rho (ρ) correlation statistic and bivariate logistic regression. Results Fifty-five residents out of 65 (84.6%) eligible participants completed the study. There were limited correlations found between resident endoscopy experience and FES performance metrics and no correlations were found between resident endoscopy experience and binary metrics of colonoscopy-ability to complete colonoscopy, ability to retroflex, and withdrawal time of less than 6 minutes. Conclusion The VR simulator may have a limited ability to discriminate between experience levels among resident cohort. Future studies are needed to further understand how well the VR simulator metrics correlate with resident endoscopy experience.

Management of Complex Transmediastinal Stab Wound With Cardiac, Esophageal, and Arterial Injury.

Penetrating transmediastinal traumatic injuries often carry a high mortality given the vital structures this type of injury often involves. Here, we describe a case of 24-year-old man who suffered multiple stab wounds to the chest and back with associated cardiac, esophageal, and arterial injury, requiring immediate operative intervention. He underwent sternotomy and left thoracotomy with pericardiotomy, repair of 2 right ventricular lacerations, and ligation of internal mammary artery. The esophageal injury was repaired with endoscopic clips. Patient had an uncomplicated recovery. Despite high mortality often associated with transmediastinal penetrating injuries, good outcomes are achievable with rapid identification of injuries and appropriate operative intervention alongside adequate resuscitation.

Renoduodenal Fistula Following Penetrating Abdominal Injury.

Renoduodenal fistula is an uncommon occurrence and usually results as a complication of injury or inflammatory process. Here, we describe a case of renoduodenal fistula formation after traumatic injury via gunshot wound to the abdomen. The patient suffered right renal and ureteral injury, complicated by urine leak, managed by surgery, interventional radiology, and urology. His post-hospital course was complicated by recurrent urinary tract infections and was found to have a renoduodenal fistula 3 months after the initial operation. Patient underwent uncomplicated right nephrectomy and repair of fistula. Etiology, presentation, diagnosis, and treatment options of renoduodenal fistula are discussed.

Association Between Operative Autonomy of Surgical Residents and Patient Outcomes.

IMPORTANCE: Resident operative autonomy has been steadily decreasing. Whether this reduction in autonomy has been associated with changes in patient outcomes is unclear. OBJECTIVE: To assess whether surgical procedures performed by residents without an attending surgeon scrubbed are associated with differences in patient outcomes compared with procedures performed by attending surgeons alone or by residents with the assistance of attending surgeons. DESIGN, SETTING, AND PARTICIPANTS: This retrospective propensity score-matched cohort study analyzed 30-day outcomes among patients who received operations at US Veterans Affairs (VA) medical centers and were recorded within the VA Surgical Quality Improvement Program (VASQIP) database from July 1, 2004, to September 30, 2019. Among 1 797 056 operations recorded in the VASQIP during that period, 1 319 020 were eligible for inclusion. Operations performed by a surgical resident without an attending surgeon scrubbed (resident primary) were propensity score matched on a 1:1 ratio (based on year of procedure and patient age, race, sex, American Society of Anesthesiologists physical status classification, functional status, emergency status, inpatient status, presence of multiple comorbidities, and Current Procedural Terminology code) to operations performed by an attending surgeon only (surgeon primary) and operations performed by a resident with assistance from an attending surgeon (resident plus surgeon). EXPOSURES: Level of resident involvement. MAIN OUTCOMES AND MEASURES: Thirty-day adjusted all-cause mortality. RESULTS: Among 1 319 020 surgical procedures included, 138 750 were performed by residents only, 308 724 were performed by surgeons only, and 871 546 were performed by residents and surgeons. For the 1 319 020 total cases, patients' mean (SD) age was 61.6 (12.9) years; 1 223 051 patients (92.7%) were male; and 212 315 (16.1%) were Black or African American, 63 817 (4.9%) were Hispanic, 830 704 (63.0%) were White, and 212 814 (16.1%) were of other or unknown race and ethnicity. Propensity score matching produced 101 130 pairs of resident-primary and surgeon-primary procedures and 137 749 pairs of resident-primary and resident plus surgeon procedures. Patient all-cause mortality and morbidity were no different among those who received surgeon-primary procedures (mortality: odds ratio [OR], 1.03 [95% CI, 0.95-1.12]; morbidity: OR, 1.01 [95% CI, 0.97-1.05]) vs resident plus surgeon procedures (mortality: OR, 1.03 [95% CI, 0.97-1.11]; all-cause morbidity: OR, 0.97 [95% CI, 0.95-1.00]). Resident-primary procedures had longer operative times than surgeon-primary procedures (median, 80 minutes [IQR, 50-123 minutes] vs 70 minutes [IQR, 41-114 minutes], respectively; P < .001) but shorter operative times than resident plus surgeon procedures (median, 71 minutes [IQR, 43-113 minutes] vs 73 minutes [IQR, 45-115 minutes]; P < .001). Hospital length of stay was unchanged among resident-primary vs surgeon-primary procedures (median, 4 days [IQR, 2-10 days] vs 4 days [IQR, 2-9 days]; P = .08) and statistically significantly shorter than resident plus surgeon procedures (median, 4 days [IQR, 1-9 days] vs 4 days [IQR, 2-10 days]; P < .001). CONCLUSIONS AND RELEVANCE: In this cohort study, surgical procedures performed by residents alone were not associated with any changes in all-cause mortality or composite morbidity compared with those performed by attending surgeons alone or by residents with the assistance of attending surgeons. Given these findings and the importance of operative autonomy to prepare surgical residents for independent practice, efforts to increase autonomy are both safe and needed.