Review of first degree AV block with some ECG examples - PR interval > 200ms (five small squares) LITFL ECG Library. |
A first-degree, or 1st degree, AV block is indicated on the ECG by a prolonged PR interval, as seen below. |
Atrioventricular (AV) block is partial or complete interruption of impulse transmission from the atria to the ventricles. The most common cause is ... |
2:1 atrioventricular block is a form of second-degree AV nodal block and occurs when every other P wave is not conducted through the AV node to get to the ... |
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