What is the recommended rate for delivering rescue breaths during one-rescuer CPR for an adult drowning victim?

• A. One breath every 2 seconds.
• B. One breath every 10 seconds.
• C. One breath every 5-6 seconds.
• D. Two breaths per minute.

Answer: (C)

In one-rescuer CPR for an adult who has drowned, the goal is to restore oxygen delivery while keeping chest compressions going effectively. The recommended pace for rescue breaths is about one breath every 5 to 6 seconds, which works out to roughly 10–12 breaths per minute. This rate provides enough oxygenation without over-ventilating, which can raise airway pressures and hinder venous return during CPR. Breathing too quickly can cause hyperventilation and interrupt compressions, while breathing too slowly won’t supply adequate oxygen. So, about a breath every 5–6 seconds is the best balance.