[Impact of sonography simulation in the training of midwifery students]

During their studies, French midwives need to acquire basic ultrasound skills to measure the amniotic fluid index, fetal biometry and identify fetal lie and placental positions. They have a clinical ultrasound training during their curriculum to acquire these skills. Assess the contribution that a training on an obstetrical ultrasound simulator (OUS) could make to the competence of midwives and to evaluate the best time to integrate it into their curriculum.

Forty students in their 4th and final year in midwifery were randomized into 2 groups. Group A learned with the traditional academic course, with a clinical ultrasound training which was followed by an evaluation on an OUS (E1A). Group B was evaluated on a simulator before the clinical ultrasound training (E1B). After these initial assessments, both groups were provided with learning and training sessions on OUS, and re-evaluated in the same exercise (E2A and E2B). Group B then completed its clinical ultrasound training and was evaluated one month later on the simulator (E3B). The evaluation consisted of scoring the biometry images according to previously published quality criteria, and of assessing their competence based on a published objective and structured assessment score of ultrasound skills (OSAUS).

Evaluation 1 found comparable OSAUS scores (2.375/5 vs. 2.24/5 P=0.52) between the two groups (E1A vs. E1B) but a significantly higher image quality score for Group A (P=0.02). In Evaluation 2, an improvement was noted for both groups with comparable OSAUS averages between the two groups (P=0.76). After the clinical training of Group B, their OSAUS score (E3B) was significantly better than that of Group A (E1A) after their clinical training (3.45/5 vs. 2.375/5 [P=0.00017]). The same was true for the quality of their images (12.67/16 vs. 9.95/16 [P=0.003]).

Ultrasound simulation-based training, as an adjunct to ultrasound clinical training, significantly improves obstetrical ultrasound skills. The best time to train on simulators seems to be prior to clinical training on real patients.