Impact of Integrated Vascular Surgery Residency on General Surgery Resident and Vascular Fellow Operative Volume: A National Analysis

Abstract

Background The impact of integrated vascular surgery (VS) residency (0 + 5) programs on general surgery (GS) resident and VS fellow (5 + 2) operative volume has not been investigated on a national scale. Methods Accreditation Council for Graduate Medical Education (ACGME) case logs were reviewed for GS resident, VS resident, and VS fellow operative volume from 2001-2021. Integrated VS resident data was available from 2012-2021, corresponding with the introduction of the 0 + 5 paradigm. Trends in operative volume were evaluated via linear regression analysis. Results The national cohort of chief GS resident graduates increased from 1005 to 1357 per year. Total operative volume also increased from 932 to 1039 cases (+7.4 cases/yr, R2 = .80, P < .0001) among GS residents. Major vascular cases decreased among GS residents from 138 to 101 cases (−2.4 cases/yr, R2 = .58, P < .0001) with a decrease in proportion of chief-level vascular cases from 30.4% to 11.9% (−1.0%/yr, R2 = .92, P < .0001). Palliative procedures (amputations and hemodialysis access) comprised a significant proportion of GS cases (median 44.7%). Concurrently, integrated VS graduates increased from 11 to 37 per year, with an increase in major vascular case volume from 506 to 658 cases (+18.4 cases/yr, R2 = .63, P = .01). Total VS fellow major case volume also increased from 369 to 444 cases (+3.5 cases/yr, R2 = .73, P < .0001). Conclusions The introduction of the 0 + 5 intgrated VS residency paradigm has correlated with a significant decrease in GS operative experience in major vascular procedures on a national level. Traditional VS fellow case volume does not appear to be impacted by 0 + 5 integrated residents. Further analysis with program-level data may help to explain the causative relationship of these findings.