Vacuum-assisted birth in maternal lateral posture versus lithotomy. A simulation study.

Area of Science:

• Obstetrics and Gynecology
• Medical Simulation
• Surgical Techniques

Background:

• Maternal lateral postures offer benefits during childbirth.
• Vacuum-assisted delivery is a common obstetric procedure.
• Optimizing delivery positions can enhance outcomes.

Purpose of the Study:

• To evaluate the feasibility of performing vacuum-assisted births in maternal lateral positions using a simulation model.
• To compare the accuracy of vacuum cup placement in lateral versus lithotomy postures.
• To assess the learnability of a modified technique for lateral vacuum-assisted delivery.

Main Methods:

• A modified 5-step technique for lateral vacuum-assisted delivery was developed.
• Obstetricians and medical students performed simulated vacuum-assisted births in lateral and lithotomy postures.
• Vacuum cup placement accuracy was measured by lateral distance, vertical distance, and distance to the flexion point.

Main Results:

• A total of 128 simulated vacuum-assisted births were conducted.
• Mean distance to the flexion point was 1.15 ± 0.71 cm in lithotomy and 1.31 ± 0.82 cm in lateral posture (P=0.127).
• No statistically significant differences in cup placement accuracy were observed between the two postures.

Conclusions:

• Performing vacuum-assisted births in maternal lateral positions is feasible within a simulation setting.
• The modified technique for lateral vacuum-assisted delivery is easy to learn.
• Cup placement accuracy differences between lateral and lithotomy postures are minimal, suggesting potential for clinical application.