After chest compressions with coordinated ventilations are started, the heart rate should be assessed:.A. After 60 seconds. B. After 30 seconds. C. After 90 seconds.

The correct option is A

Explanation:

If an electronic cardiac monitor is used to determine/access heart rate during chest compressions (with coordinated ventilations of 100% oxygen), the heart rate is checked after 60 seconds of chest compressions. This is because it generally takes a minute for the heart rate to increase after chest compression has started.

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