In CPR, the recommended interval for breaths when an advanced airway is in place is every how many seconds?

• A. 2 seconds
• B. 4 seconds
• C. 6 seconds
• D. 8 seconds

Answer: (C)

When an advanced airway is in place, breaths are delivered at a steady interval of six seconds apart. This cadence gives about ten breaths per minute while chest compressions continue, keeping interruptions to a minimum and helping maintain coronary and cerebral perfusion. The goal is to provide adequate oxygenation without flooding the lungs or disrupting the rhythm of compressions; delivering breaths more frequently than every six seconds can cause hyperventilation and higher intrathoracic pressure, which can hinder circulation. Each breath is typically delivered over about one second with a quick rise of the chest, then you resume compressions.