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Updated: Jan 21, 2026
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Porcine Model of Infrarenal Abdominal Aortic Aneurysm
Published on: November 21, 2019
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Learning Curve Analysis to Determine Operative Requirements for Young Vascular Surgeons Learning Open Abdominal
Takuro Shirasu1,2, Takatoshi Furuya1, Motoki Nagai1
1Department of Surgery, Asahi General Hospital.
Summary
Young vascular surgeons can master open abdominal aortic aneurysm (AAA) repair within approximately 30 cases. This training ensures comparable operation times and complication rates to experienced surgeons, enhancing surgical skills.
Area of Science:
- Vascular Surgery
- Surgical Education
- Aortic Aneurysm Repair
Background:
- Endovascular aneurysm repair is now predominant.
- Training for open abdominal aortic aneurysm (AAA) surgery is a growing concern for young vascular surgeons.
- Learning curve analysis is crucial for assessing surgical skill acquisition.
Purpose of the Study:
- To determine the number of open AAA repair cases required for young surgeons to achieve proficiency.
- To analyze the learning curve for open abdominal aortic aneurysm surgery.
Main Methods:
- Learning curve analysis of 562 open AAA repairs.
- Comparison of operation times (preparation, clamp, total) between attending surgeons and 6 young vascular surgeons.
- Cumulative sum analysis to assess skill enhancement.
Main Results:
- Young surgeons showed a trend of decreasing operation times with successive cases.
- Proficiency in preparation, clamp, and total operation times was achieved by young surgeons within 10, 30, and 10 cases, respectively.
- Cumulative sum analysis indicated 25-27 cases were needed for skill enhancement, with no increase in complication rates compared to attending surgeons.
Conclusions:
- Young vascular surgeons can acquire open AAA repair skills safely.
- Approximately 30 cases are necessary for young surgeons to achieve satisfactory open AAA repair skills.
- Open AAA repair can be learned without compromising patient safety or increasing operative time.
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