Q.

Heart rate from ECG is calculated as……

A. 300/ No of small squares between two conjugative R waves
B. 1500 / No of small squares between two conjugative R waves
C. 1500/No of large squares between two conjugative R waves
D. 2500/No of large squares between two conjugative R waves
Answer» B. 1500 / No of small squares between two conjugative R waves
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