For a single-rescuer adult CPR, what is the recommended compression-to-ventilation ratio?

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Multiple Choice

For a single-rescuer adult CPR, what is the recommended compression-to-ventilation ratio?

In single-rescuer adult CPR, the goal is to keep blood flowing while also delivering enough oxygen to the lungs. The best balance to achieve that is a pattern of 30 chest compressions followed by 2 rescue breaths, repeated until signs of life return or help arrives. This ratio keeps chest compressions ongoing frequently enough to sustain perfusion, while still providing breaths to oxygenate the blood. If you pause too long for breaths, perfusion drops; if you vent too often, you interrupt compressions and reduce blood flow. While performing compressions, do them at about 100–120 per minute and aim for a depth of about 2 inches (5 cm) in an adult. If an advanced airway is in place, guidelines allow continuous compressions with a breath roughly every 6 seconds, but the standard starting pattern for a single rescuer remains 30 compressions to 2 breaths.

In single-rescuer adult CPR, the goal is to keep blood flowing while also delivering enough oxygen to the lungs. The best balance to achieve that is a pattern of 30 chest compressions followed by 2 rescue breaths, repeated until signs of life return or help arrives. This ratio keeps chest compressions ongoing frequently enough to sustain perfusion, while still providing breaths to oxygenate the blood. If you pause too long for breaths, perfusion drops; if you vent too often, you interrupt compressions and reduce blood flow. While performing compressions, do them at about 100–120 per minute and aim for a depth of about 2 inches (5 cm) in an adult. If an advanced airway is in place, guidelines allow continuous compressions with a breath roughly every 6 seconds, but the standard starting pattern for a single rescuer remains 30 compressions to 2 breaths.

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