What is Known: • Infant cardiopulmonary resuscitation (iCPR) is often poorly performed and skills decay within months after training. • Regular iCPR skills updates are important, but the optimal retraining interval considering individual training needs has yet to be established.

What is New: • Infant chest compression (iCC) competence can be achieved within one to four months after training and once achieved, it can be retained for many months. • With skill reinforcement of up to 28 minutes after initial training, 90% of individuals were able to achieve competence in iCC and 86% retained this competence at follow-up.