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Open Access
CC BY 4.0 · Aorta (Stamford) 2020; 08(03): 059-065
DOI: 10.1055/s-0040-1713860
Original Research Article

Higher Institutional Volume Reduces Mortality in Reoperative Proximal Thoracic Aortic Surgery

Authors

  • Nicholas J. Shea 

    1   Department of Surgery, New York-Presbyterian Hospital, Columbia University Aortic Surgery Center, Columbia University Irving Medical Center, New York, New York

  • Alex M. D'Angelo

    1   Department of Surgery, New York-Presbyterian Hospital, Columbia University Aortic Surgery Center, Columbia University Irving Medical Center, New York, New York

  • Antonio R. Polanco

    1   Department of Surgery, New York-Presbyterian Hospital, Columbia University Aortic Surgery Center, Columbia University Irving Medical Center, New York, New York

  • Philip Allen 

    1   Department of Surgery, New York-Presbyterian Hospital, Columbia University Aortic Surgery Center, Columbia University Irving Medical Center, New York, New York

  • Joseph E. Sanchez

    1   Department of Surgery, New York-Presbyterian Hospital, Columbia University Aortic Surgery Center, Columbia University Irving Medical Center, New York, New York

  • Paul Kurlansky

    1   Department of Surgery, New York-Presbyterian Hospital, Columbia University Aortic Surgery Center, Columbia University Irving Medical Center, New York, New York

  • Virendra I. Patel

    1   Department of Surgery, New York-Presbyterian Hospital, Columbia University Aortic Surgery Center, Columbia University Irving Medical Center, New York, New York

  • Hiroo Takayama

    1   Department of Surgery, New York-Presbyterian Hospital, Columbia University Aortic Surgery Center, Columbia University Irving Medical Center, New York, New York

Funding This paper was partially funded by the Michael Treat Columbia University Resident Research Award.
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Abstract

Objective This study aims to determine the impact of institutional volume on mortality in reoperative proximal thoracic aortic surgery patients using national outcomes data.

Methods The Nationwide Inpatient Sample was queried from 1998 to 2011 for patients with diagnoses of thoracic aneurysm and/or dissection who underwent open mediastinal repair. A total of 103,860 patients were identified. A total of 1,430 patients had prior cardiac surgery. Patients were further stratified into groups by institutional aortic volume: low (<12 cases/year), medium (12–39 cases/year), and high (40+ cases/year) volume. Multivariable risk-adjusted analysis accounting for emergent status and aortic dissection among other factors was performed to determine the impact of institutional volume on mortality.

Results Overall mortality was 12% in the reoperative population. When the redo cohort was divided into tertiles, high-volume group had a 5% operative mortality compared with 9 and 15% for the medium- and low-volume groups, respectively. Multivariable analysis revealed that patients operated on at low- (odds ratio [OR] = 5.0, 95% confidence interval [CI]: 2.6–9.6, p < 0.001) and medium-volume centers (OR = 2.1, 95% CI: 1.1–4.2, p = 0.03) had higher odds of mortality when compared with patients operated on at high-volume centers.

Conclusions High-volume aortic centers can significantly reduce mortality for reoperative aortic surgery, compared with lower volume institutions.

Keywords

reoperation - aortic surgery - aortic aneurysm - aortic dissection


Publication History

Received: 28 May 2019

Accepted: 18 May 2020

Article published online:
05 November 2020

© 2020. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/).

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