Science, asked by Tanucoco, 10 months ago

. write briefly on cause and norman duration ofP-R interval​

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Answered by prashant247
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Answer:

In electrocardiography, the PR interval is the period, measured in milliseconds, that extends from the beginning of the P wave (the onset of atrial depolarization) until the beginning of the QRS complex (the onset of ventricular depolarization); it is normally between 120 and 200ms in duration.

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