During adult CPR, how many rescue breaths follow the compressions when performed by a single rescuer?

During adult CPR, how many rescue breaths follow the compressions when performed by a single rescuer?

• A. 4 breaths
• B. 3 breaths
• C. 1 breath
• D. 2 breaths

Answer: (D)

In adult CPR for a single rescuer, the standard cycle is 30 chest compressions followed by 2 rescue breaths, then repeat. This pattern balances providing ventilation with maintaining ongoing chest compressions to sustain blood flow. Two breaths are enough to ventilate without creating a long interruption; one breath would under-ventilate, and three or four breaths would pause compressions longer and increase the risk of gastric inflation and decreased perfusion. After delivering the two breaths, resume compressions immediately and continue the cycle.

In adult CPR for a single rescuer, the standard cycle is 30 chest compressions followed by 2 rescue breaths, then repeat. This pattern balances providing ventilation with maintaining ongoing chest compressions to sustain blood flow. Two breaths are enough to ventilate without creating a long interruption; one breath would under-ventilate, and three or four breaths would pause compressions longer and increase the risk of gastric inflation and decreased perfusion. After delivering the two breaths, resume compressions immediately and continue the cycle.