The client has exactly 8.0 R-R intervals in 150 small blocks on the ECG paper. Based on this information, the nurse calculates the client's ventricular heart rate to be which of the follow-ing?
A. 40 beats/min
B. 80 beats/min
C. 160 beats/min
D. The heart rate cannot be calculated from the information provided.
B
Precisely 6 seconds is represented by 150 small blocks on ECG paper. The number of R-R inter-vals, representing ventricular depolarization episodes, present in 6 seconds can be multiplied by 10 to calculate the ventricular heart rate.
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