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To calculate the PQ interval, measure the time from the beginning of the P wave to the beginning of the Q wave on an electrocardiogram (ECG). This interval reflects the time it takes for electrical impulses to travel from the atria to the ventricles. The normal PQ interval duration is typically between 120 to 200 milliseconds. If measured in seconds, you can convert milliseconds to seconds by dividing by 1000.

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1w ago

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