Optimizing the effectiveness of cardiopulmonary resuscitation by medical students in a blended learning environment

Guidelines for cardiopulmonary resuscitation (CPR) and emergency cardiovascular care are based on the ILCOR International Consensus on Cardiopulmonary Resuscitation and Emergency Cardiopulmonary Care with Treatment Recommendations. High-quality rate was defined as ≥100 compressions per minute, with a depth of ≥50 millimeters (mm), allowing for full (100%) chest rotation and a compression fraction approaching 100%. In our study, we found that chest compression depth ≥50 mm was achieved by 12 (30%) participants in the distance (1) training group, whereas in the face-to-face (2) training group, 35 (83%) students achieved effective chest compression depth (χ2P=23.84; p=0.000). When analyzing the frequency of chest compressions in the group of distance (1) students, the median was 100 (95-110) compressions/min compared to 105 (95-110) compressions/min in the group of full-time (2) students (Kr-U: χ2=0.28, p=0.59), no statistical difference in compliance with recommendations for the frequency of compressions was found in both groups (p<0.001). Evaluation of the effectiveness of CPR, success, consisted of the average depth of chest compressions (≥50 mm) and the average frequency of chest compressions (100-120 compressions per minute). Success in performing CPR was achieved by 7 (18%) students in the distance learning group (1) and by 31 (74%) participants in the face-to-face (2) learning group (χ2P=26.12; p=0.000), which is 4.4 times better. During the work, it was found that the success of CPR has a significant correlation (p<0.05) with the depth of compressions (rs=0.46), with the number of compressions (rs=0.55) and with the face-to-face learning group (rs=0.56). In addition, an analysis of student satisfaction with CPR skills was conducted and we found that in the distance learning group 34 (85%) students were dissatisfied with their results, while in face-to-face learning only 7 (17%) were dissatisfied, that is, 9% acquired these skills during the training.