JBL EMT Practice Exam

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An appropriate compression-to-ventilation ratio for single-rescuer CPR in an adult patient is:

  1. 15:2

  2. 30:2

  3. 5:1

  4. 15:1

The correct answer is: 15:2

Compression-to-ventilation ratio refers to the number of chest compressions to the number of rescue breaths given during CPR. During single-rescuer CPR on an adult patient, the recommended ratio is 302, which means 30 chest compressions followed by 2 rescue breaths. This allows for adequate blood circulation and oxygenation in the patient. Option A, 15:2, would not provide enough compressions to maintain adequate circulation, and option D, 15:1, would provide too few rescue breaths. Option C, 5:1, would also not provide enough compressions and may result in ineffective CPR.

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