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

• A. 30:2
• B. 15:2
• C. 20:2
• D. 30:3

Answer: (A)

When one rescuer is performing CPR on a child, the pattern is a cycle of chest compressions followed by a brief ventilation burst: thirty compressions for every two breaths. This setup keeps blood flowing effectively while still delivering enough oxygen to the lungs. The cadence should be fast, aiming for about one hundred to one hundred twenty compressions per minute, with minimal interruptions between cycles. If two rescuers are present, the balance shifts to fifteen compressions for two breaths, increasing ventilation frequency. Other ratios would disrupt perfusion or ventilation too much, so the single-rescuer standard is the cycle of compressions followed by two quick breaths, repeated.