Written Lifeguarding Practice Test

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Which of the following is the correct compression-to-ventilation ratio for adult CPR when two rescuers are present?

  1. 15:1

  2. 15:2

  3. 30:1

  4. 30:2

The correct answer is: 15:1

When doing adult CPR with two rescuers, the recommended compression-to-ventilation ratio is 152. Option A, 15:1, is incorrect because it has too few ventilations for the number of compressions being given. Option C, 30:1, is also incorrect as it would result in too few ventilations to properly oxygenate the patient. Option D, 30:2, has the same issue of too few ventilations. Remember that during CPR, it is important to have a balance between compressions to circulate blood and ventilations to provide oxygen to the body.

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