Effects of experience and reference tools on laparoscopic length measurements

Area of Science:

• Surgical Education
• Minimally Invasive Surgery
• Surgical Skills Assessment

Background:

• The accuracy of laparoscopic intestinal length measurements by surgeons and trainees is not well-established.
• This study investigates laparoscopic length measurement accuracy and precision using a box-trainer model.

Purpose of the Study:

• To evaluate the accuracy and precision of laparoscopic length measurements.
• To compare measurement performance between surgical attendings, residents, and medical students.
• To assess the impact of a measurement tool on accuracy, precision, and operative time.

Main Methods:

• Surgical trainees (residents, medical students) and attendings performed laparoscopic length measurements in a box trainer.
• Measurements were taken first without a tool, then with a 10-cm suture as a reference.
• Accuracy was assessed by comparing mean measurements to the true length; precision was evaluated by the mean deviation from the true length.

Main Results:

• No significant difference in accuracy was found between training levels for the initial measurement.
• Trainees (residents and students) showed significant improvement in measurement precision when using a measurement tool.
• Experienced surgeons (attendings) maintained accuracy and precision, with no increase in operative time when using the tool.

Conclusions:

• A measurement tool enhances precision in laparoscopic length measurements without negatively impacting operative time for experienced surgeons.
• Further research is needed to standardize methods and optimize training techniques for laparoscopic measurement tools.