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Surgeon Elective Abdominal Aortic Aneurysm Repair Volume and Outcomes of Ruptured Abdominal Aortic Aneurysm Repair: A 12-year Nationwide Study
Authors:Chun-Ku Chen  Hsiao-Ting Chang  Yu-Chun Chen  Tzeng-Ji Chen  I-Ming Chen  Chun-Che Shih
Affiliation:1. Department of Radiology, Taipei Veterans General Hospital, Taipei, Taiwan
2. Institute of Hospital and Health Care Administration, School of Medicine, National Yang-Ming University, Taipei, Taiwan
3. Division of Family Medicine, Taipei Hospital, Department of Health, New Taipei City, Taiwan
4. School of Medicine and Institute of Public Health, Community Medicine Research Center, National Yang-Ming University, Taipei, Taiwan
5. Department of Medical Research and Education, National Yang-Ming University Hospital, Yilan, Taiwan
6. Department of Family Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
7. Division of Cardiovascular Surgery, Department of Surgery, Taipei Veterans General Hospital, 201, Sec. 2, Shipai Rd, Taipei, 11217, Taiwan
8. Institute of Clinical Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
Abstract:

Background

The purpose of the present study was to examine the effects of surgeon elective abdominal aortic aneurysm repair volume on outcomes after ruptured abdominal aortic aneurysm (rAAA) repair.

Methods

A nationwide claims database was used to identify patients who underwent rAAA repair from 1998 to 2009. Surgeon elective open abdominal aortic aneurysm repair (EAR) volume was classified as low, medium, or high. Associations between surgeon EAR volume and in-hospital mortality, overall survival, and complications after open rAAA repair (RAR) were compared with multivariate analysis. Associations between surgeon elective endovascular abdominal aortic aneurysm repair (EER) volume and outcomes after endovascular rAAA repair (RER) were also analyzed.

Results

A total of 537 patients who underwent rAAA repair were identified, including 498 who underwent RAR and 39 who underwent RER. In-hospital mortality rates after RAR were 49, 38, and 24 % in the low, medium, and high EAR volume groups, respectively (p < 0.001). Patients in the low surgeon EAR volume group had higher in-hospital mortality than those in the high surgeon EAR volume group [odds ratio 3.39, 95 % confidence interval (CI) 1.52, 7.59; p = 0.003]. Patients in the low surgeon EAR volume group also had higher long-term mortality (hazard ratio 1.86, 95 % CI 1.21, 2.85; p = 0.005). There were no significant differences in complication rates among the surgeon EAR volume groups or in-hospital mortality after RER among the surgeon EER volume groups.

Conclusions

Surgeon EAR volume is associated with in-hospital mortality and long-term survival after RAR.
Keywords:
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