How to check heart rate from the ECG?

Описание к видео How to check heart rate from the ECG?

Though heart rate can be easily checked using the stethoscope or by checking the pulse rate most of the times, in some situations you may need the help of an ECG strip. Pulse rate may be lower than the heart rate when the rhythm is irregular and fast as in an abnormal rhythm originating from the upper chambers of the heart known as atrial fibrillation.

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