Ace the Basic Life Support (BLS) Challenge 2026 – Breathe Life into Your Skills!

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What is the correct compression-to-ventilation ratio for a single rescuer of a 3-year-old child?

20 compressions to 2 breaths

30 compressions to 2 breaths

For a single rescuer performing CPR on a 3-year-old child, the correct compression-to-ventilation ratio is 30 compressions to 2 breaths. This ratio is established to ensure that compressions, which help circulate blood to vital organs, are delivered effectively while also providing sufficient ventilations to assist with oxygenation. The 30:2 ratio allows for more frequent chest compressions, which is crucial for maintaining circulation during cardiac arrest, especially in children where every second counts in preventing serious complications.

In a single-rescuer scenario, this more favorable ratio supports a balanced approach to chest compressions and rescue breaths, harmonizing the need for oxygen delivery with the urgency of maintaining blood flow. Remember, high-quality chest compressions should be the priority, and the 30:2 ratio reflects current guidelines for pediatric advanced life support.

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15 compressions to 2 breaths

30 compressions to 1 breath

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