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The American Heart Association states the normal resting adult human heart rate is 60–100 bpm. Tachycardia is a high heart rate, defined as above 100 bpm at rest.
- What is the normal PR interval for adults?
- What is the heart rate and PR interval?
- What is short PR interval?
What is the normal PR interval for adults?
In adults the normal PR interval is 0.12 to 0.20 second. It is generally shorter in children and longer in older persons. The relation between heart rate and the duration of the PR interval is discussed in Chapter 19.
What is the heart rate and PR interval?
The normal PR interval is 0.12 to 0.20 seconds, or 120 to 200 milliseconds. Multiple abnormalities of the PR interval — including prolongation of the PR interval, shortening of the PR interval and variation from beat to beat — can occur; these are discussed in detail in ECG Reviews and Criteria.
What is short PR interval?
A short PR interval is a term in cardiology that connotes a shortened time for the pacemaker in the atrium to conduct an impulse and activate the ventricle (the larger pumping chamber of the heart).
