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The heart rate is computed by averaging the most recent _________________(a) 12 P waves(b) 12 R-R intervals(c) 12 QRS complex(d) 12 R wavesI had been asked this question during a job interview.This interesting question is from Bedside Patient Monitoring System in chapter Patient Monitoring System of Biomedical Instrumentation

Answer»

The CORRECT choice is (b) 12 R-R intervals

To explain: Normally, the heart rate is COMPUTED by averaging the most recent 12 R-R intervals. This AVERAGE gives a stable ESTIMATE of the heart rate even when the rhythm is irregular.



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