Related Experiment Video

Updated: Feb 6, 2026

Single Port Donor Nephrectomy
07:17

Single Port Donor Nephrectomy

Published on: March 12, 2011

52.4K

Evaluation of the Learning Curve of Hand-Assisted Laparoscopic Donor Nephrectomy

Bum Sik Tae1, Ulanbek Balpukov2, Hyeon Hoe Kim2

  • 1Department of Urology, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, South Korea.

Annals of Transplantation
|August 8, 2018
PubMed

BACKGROUND In this study, we analyzed the learning curve of hand-assisted laparoscopic donor nephrectomy (HALDN). MATERIAL AND METHODS The first 198 consecutive donors (110 cases by expert surgeon and 88 cases by newbie surgeon) operated on using HALDN were included in this study. The primary outcome measures were warm ischemic time (WIT), total operation time and estimated blood loss (EBL). The secondary outcome measures included length of hospital stay (LOS), graft outcome, and surgery-related complications. We used the cumulative sum (CUSUM) method to generate learning curves. RESULTS Except for WIT, all operative and convalescence parameters of donors and graft outcomes were similar for the 2 groups, including the total operation time (174.13 minutes vs. 171.75 minutes, P=0.140), EBL (108.27 cc vs. 116.82 cc, P=0.494), LOS (4.80 days vs. 4.92 days, P=0.144), and overall rates of intraoperative and postoperative complications (P>0.05). A significant difference was observed in WIT between the 2 groups (140.59 sec vs. 106.85 sec, P=0.027). Upon visual assessment of the CUSUM plots, a downward inflexion point for decreasing WIT was observed in 4 cases, total operation time in 12 cases, and EBL in 15 cases. CONCLUSIONS HALDN has a relatively short learning curve and similar results may be expected from newbie urologists who are trained in minimally invasive surgery fellowship.

More Related Videos

Utilizing a 3D Printed Laparoscopic Nissen Fundoplication Model to Shorten a Resident's Learning Curve08:21

Utilizing a 3D Printed Laparoscopic Nissen Fundoplication Model to Shorten a Resident's Learning Curve

Published on: August 15, 2025

725
A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible10:42

A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible

Published on: January 28, 2020

7.0K

Related Concept Videos

Hand hygiene01:23

Hand hygiene

Asepsis is the practice of preventing or breaking the chain of infection. The nurse employs aseptic techniques to prevent the spread of microorganisms and reduce the risk of diseases. Hand hygiene is the cornerstone of aseptic techniques and is classified into medical and surgical asepsis. Medical asepsis includes hand hygiene and the use of gloves. Surgical asepsis, or the sterile technique, refers to practices that render and keep objects and areas free of microorganisms.
Hand washing...
6.0K
Self-Evaluation: Self-Enhancement and Self-Verification03:00

Self-Evaluation: Self-Enhancement and Self-Verification

Social psychologists have documented that feeling good about ourselves and maintaining positive self-esteem is a powerful motivator of human behavior (Tavris & Aronson, 2008). In the United States, members of the predominant culture typically think very highly of themselves and view themselves as good people who are above average on many desirable traits (Ehrlinger, Gilovich, & Ross, 2005). Often, our behavior, attitudes, and beliefs are affected when we experience a threat to our...
5.8K
Heating and Cooling Curves02:44

Heating and Cooling Curves

When a substance—isolated from its environment—is subjected to heat changes, corresponding changes in temperature and phase of the substance is observed; this is graphically represented by heating and cooling curves.
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
28.0K
Acid-Base Titration Curves02:23

Acid-Base Titration Curves

A titration curve is a plot of some solution property versus the amount of added titrant. For acid-base titrations, solution pH is a useful property to monitor because it varies predictably with the solution composition and, therefore, may be used to monitor the titration’s progress and detect its endpoint. Acid-base titration can be performed with a strong acid and a strong base, a strong acid and a weak base, or a strong base and a weak acid.
For a titration carried out for 25.00 mL of...
141.5K
Avoidance Learning and Learned Helplessness01:14

Avoidance Learning and Learned Helplessness

Avoidance learning and learned helplessness are critical concepts in understanding behavioral responses to negative stimuli.
Avoidance learning occurs when an organism learns that a specific behavior can prevent an unpleasant outcome. For example, a student who receives a bad grade may start studying harder to avoid future poor grades. This behavior persists even when the negative outcome is no longer present. Avoidance learning is powerful because it maintains behavior in the absence of the...
2.6K
z Scores and Area Under the Curve01:17

z Scores and Area Under the Curve

z scores are the standardized values obtained after converting a normal distribution into a standard normal distribution. A z score is measured in units of the standard deviation. The z score tells you how many standard deviations the value x is above (to the right of) or below (to the left of) the mean, μ. Values of x that are larger than the mean have positive z scores, and values of x that are smaller than the mean have negative z scores. If x equals the mean, then x has a z score of...
19.6K