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How much feedback is necessary for learning to suture?
A O'Connor1, S D Schwaitzberg, C G L Cao
1Department of Mechanical Engineering, Tufts University, 200 College Avenue, Medford, Massachusetts 02155, USA.
Surgical Endoscopy
|November 2, 2007
Summary
Knowledge of results (KR) is essential for learning laparoscopic suturing skills. While instruction offers limited additional benefits, KR alone effectively trains surgical skills, potentially optimizing training lab staffing.
Area of Science:
- Medical Education
- Surgical Simulation
- Motor Skill Acquisition
Background:
- Laparoscopic simulation training effectively transfers skills to the operating room.
- The optimal structure for laparoscopic skill acquisition, particularly regarding knowledge of results (KR) and instruction, remains underexplored.
- Knowledge of results (KR) provides feedback on motor skill execution, influencing learning outcomes.
Purpose of the Study:
- To investigate the impact of knowledge of results (KR) and detailed instruction on the learning curve of laparoscopic suturing and knot-tying.
- To determine if KR is necessary for skill acquisition and if instruction accelerates learning and performance plateaus.
- To assess the effect of KR and coaching on trainee workload during laparoscopic skill development.
Main Methods:
- Nine novice medical students were divided into three groups: no KR, KR, and KR + instruction.
- Subjects underwent 1-hour daily training sessions for 4 weeks.
- Performance metrics (task time, instrument smoothness, path length) and workload (NASA-TLX) were recorded.
Main Results:
- Knowledge of results (KR) was found to be necessary for learning suturing skills.
- Continuous instruction provided minimal additional learning benefits beyond KR.
- The combination of KR and instruction significantly reduced perceived overall workload.
Conclusions:
- Surgical skills laboratories can achieve effective training using only knowledge of results (KR).
- KR is a critical component for effective laparoscopic skill acquisition.
- Findings suggest implications for optimizing staffing and training methodologies in surgical skills labs.
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