Cumulative Sum Analysis of the Learning Curve for Video-Assisted Minilaparotomy Donor Nephrectomy in Healthy Kidney Donors
1Department of Urology, Yonsei University College of Medicine, Urological Science Institute, Seoul, Korea
2Department of Urology, National Health Insurance Service Ilsan Hospital, Goyang-si, Korea
3Department of Urology, Hanyang University Medical Center, Seoul, Korea
4Department of Surgery-Transplantation, Yonsei University College of Medicine, Seoul, Korea.
Meeting: 2018 American Transplant Congress
Abstract number: C137
Session Information
Session Name: Poster Session C: Kidney Living Donor Issues
Session Type: Poster Session
Date: Monday, June 4, 2018
Session Time: 6:00pm-7:00pm
Presentation Time: 6:00pm-7:00pm
Location: Hall 4EF
Background:Video-assisted minilaparotomy surgery (VAMS) is a hybrid of open and laparoscopic surgical techniques, so has advantages of both approaches. Here we examined the learning curve for this procedure.
Methods: We retrospectively evaluated 50 consecutive patients who underwent VAMS donor nephrectomy performed by a single surgeon (Y.E.Y.) between March 2015 and March 2016. The learning curve was evaluated using the cumulative sum (CUSUM) method.
Results: The mean patient age, body mass index, and body surface area were 43.5 years, 23.8 kg/m2, and 1.7 m2, respectively. The mean operation time and warm ischemic time were 160.0 min and 124.4 s. The learning curve of total operation time was best modeled as a second-order polynomial with equation CUSUMOT (min) = -0.3802 [times] case number2 + 20.315 [times] case number – 41.333 (R2=0.7707). The curve included three unique phases: phase 1 (the initial 17 cases), which is the initial learning curve; phase 2 (the middle 23 cases), expert competence, and phase 3 (the subsequent cases), mastery.
Conclusions: The VAMS donor nephrectomy learning curve is shorter than for laparoscopic or robotic hand-assisted donor nephrectomy. Surgeons can become familiar with the procedure and perform it without complications after approximately 17 operations.
CITATION INFORMATION: Na J., Park J., Yoon M-.G., Lee H., Yoon Y., Huh K., Kim M., Kim S., Kim Y., Han W. Cumulative Sum Analysis of the Learning Curve for Video-Assisted Minilaparotomy Donor Nephrectomy in Healthy Kidney Donors Am J Transplant. 2017;17 (suppl 3).
To cite this abstract in AMA style:
Na J, Park J, Yoon M-G, Lee H, Yoon Y, Huh K, Kim M, Kim S, Kim Y, Han W. Cumulative Sum Analysis of the Learning Curve for Video-Assisted Minilaparotomy Donor Nephrectomy in Healthy Kidney Donors [abstract]. https://atcmeetingabstracts.com/abstract/cumulative-sum-analysis-of-the-learning-curve-for-video-assisted-minilaparotomy-donor-nephrectomy-in-healthy-kidney-donors/. Accessed May 9, 2025.« Back to 2018 American Transplant Congress