Detecting performance variance in complex surgical procedures: analysis of a step-wise technique for laparoscopic right hepatectomy

作者：Toro Juan P; Patel Ankit D; Lytle Nathaniel W; Sweeney John F; Medbery Rachel L; Davis Steven Scott Jr; Lin Edward; Sarmiento Juan M^*

来源：American Journal of Surgery, 2015, 209(2): 418-423.

DOI：10.1016/j.amjsurg.2014.03.014

• Laparoscopic right hepatectomy
• Step-wise technique
• Variance
• Manufacturing productivity tools

BACKGROUND: Laparoscopic right hepatectomy (LRH) is a technically challenging operation. Our aim is to evaluate a standardized technique of LRH and determine variances in performance.
METHODS: The procedure was deconstructed into 7 major step-wise components. All LRH followed the same surgical sequence, and used the same devices and operating room set-up. Thirty randomly selected video recordings of the procedure underwent intraoperative time analysis. The variances measured by standard deviation of each step were calculated (mean in minutes 6 standard deviation).
RESULTS: Mean total operative time was 114 +/- 25 min. The steps with the least variance were inferior vena cava dissection (8 +/- 3) and right hepatic vein ligation (9 +/- 5). The longest and also the step with the greatest variance was parenchymal transection (35 +/- 12).
CONCLUSIONS: LRH can be performed consistently using a standardized step-wise technique. Parenchymal transection had most variation, and this could be explained by intrinsic liver factors. Surgical performance improvement should begin with deconstructing the operation into definable steps to identify areas for change.

• 出版日期2015-2