Abstract 145: A Randomized Control Trial to Compare the Retention Rate of Two Cardiopulmonary Resuscitation Instruction Methods in the Noivce
Aim: To conduct a randomized control trial to compare the retention rates of two cardiopulmonary resuscitation (CPR) instruction methods:
1. Conventional CPR - chest compression before month to month ventilation 2. Chest compression only CPR
Methods: Participants were freshman nursing students who have not been instructured on CPR techniques for the past two years. They were randomized into 2 groups: Group A (Gp A): 30 compressions before 2 ventilations and Group B (Gp B): chest compression only CPR. Participants in Gp A were taught to perform only chest compressions if they were not willing or unable to perform mouth-to-mouth ventilation. A 2-hour teaching session was conducted utilizing Laedral Resusci-Annie manikin with a skill metre. All participants were required to take a practical test after the teaching session. Six months later, participants underwent an unannounced assessment where they were required to attend to a cardiac arrest scenario for 5 minutes. Performance was recorded via the skill meter manikin and filmed, which was later rated by blinded reviewers.
Results: 154 participants were randomized to Gp A and 193 to Gp B with 107/154 (Gp A) and 146/ 193 (Gp B) attending the assessment at 6 months. Mean compression rates were higher in the chest compression only arm (Gp B) 77.66/min vs 57.83/min in the CPR arm (Gp A) [p < 0.001]. Mean total number of compressions were also significantly higher; 319 (Gp B) vs 226 (Gp A) [p< 0.001]. There was no statistical difference in mean compression depth between 2 groups. Multivariate analysis showed weight to be the only significant variable affecting compression depth in both groups. In those who performed ventilation, only 2/107 had 10 effective ventilations, 7/107 had more than 5 effective ventilations in 5 mins. Many who attempted ventilation had no actual mouth-to-mouth contact, 48/107.
Conclusion: Teaching chest compression only CPR is associated with a significantly higher rate of chest compressions; hence performance of effective chest compressions was better than those who were taught and performed conventional CPR. Majority did not perform effective ventilations, suggestive of poor retention in ventilation skills. In general, performances declined after a post-training interval of 6 months.
- © 2013 by American Heart Association, Inc.