Canadian Red Cross Basic Life Support (BLS) Practice Test

In a two-responder cycle for an infant, the correct protocol consists of performing 15 compressions followed by 2 ventilations. This ratio reflects the specific adjustments made for infants, as they require different care compared to adults and older children during resuscitation. The frequency of compressions at 15 per cycle ensures that the infant receives adequate blood circulation during cardiac arrest, while the 2 ventilations help provide oxygen effectively. The rationale for the 15:2 ratio is based on pediatric resuscitation guidelines, which emphasize the importance of maintaining effective blood flow while also ensuring sufficient oxygen delivery. When working in teams, this cycle allows for continuous care and helps prevent fatigue among responders, optimizing the chances of a positive outcome for the infant. This understanding of proper compression and ventilation ratios is crucial for effective CPR and aligns with the latest evidence-based practices.