In terms of rescue breathing, how long should each breath last?

In the context of rescue breathing, the recommended duration for each breath is about 1 second. This timing is important because it allows a sufficient amount of air to enter the lungs of the person receiving assistance without causing discomfort or potential complications, such as excessive inflation of the stomach. The goal is to provide effective ventilation while ensuring that the breaths are delivered at a rate that supports effective oxygenation.

A breath lasting about 1 second is optimal as it encourages the right volume of air to be administered—enough to help in the revival process but short enough to avoid potential issues associated with over-inflation. Following this guideline helps to maintain an effective rhythm during the rescue breathing process, contributing to the overall effectiveness of the life support being provided.