Electrocardiography, Dr. D. Penney




Table 21. DETERMINATION OF HEART RATE (continued....)
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The comparison of two ECG strips; one a sedentary 35 yr.-old vs. a 23 yr.-old long distance runner. [paper speed is standard (25 mm/sec.); large horizontal squares 0.2 sec.; small squares 0.04 sec.)

Method 3: (for very slow rates)

Count the events per 6 sec; use 2, 3 sec. markers at the top of paper; multiply by 10.

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