If two successive qrs complexes are 0.8 seconds apart, the heart rate is 75 bpm.
Heart rate
Using this formula
Heart rate=Number of second in a minutes/Successive qrs complexes
Where:
Number of second in a minutes=60 seconds
Successive qrs complexes=0.8 seconds
Let plug in the formula
Heart rate=60 seconds/0.8 seconds
Heart rate=75 bpm
Inconclusion If two successive qrs complexes are 0.8 seconds apart, the heart rate is 75 bpm.
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