Which of the following statements is true about adult external cardiac compression?
a. Compressions should displace the sternum at least 3 to 4 in.
b. Compressions should occur at a rate of 60 to 80/min.
c. Compression time should at least equal the upstroke phase.
d. Compressions can be safely interrupted for up to 50 sec.
ANS: C
The compression phase of the cycle should be equal in duration to the upstroke phase.
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