The most authoritative answer in 2024
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Isabella Garcia——Studied at the University of Seoul, Lives in Seoul, South Korea.
First-degree atrioventricular block (AV block) is a condition where the electrical impulses that control the heartbeat are slightly delayed as they pass from the atria (the upper chambers of the heart) to the ventricles (the lower chambers). This delay is characterized by a prolonged PR interval on an electrocardiogram (ECG), which is longer than 0.20 seconds. It's important to note that in first-degree AV block, every electrical impulse is still conducted to the ventricles, but with a delay. This condition is often asymptomatic, meaning many people don't experience any symptoms and it's often detected incidentally during a routine ECG. read more >> -
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Ava Brown——Works at Cloud9 Technologies, Lives in San Diego, CA.
First-degree atrioventricular block (AV block), or PR prolongation, is a disease of the electrical conduction system of the heart in which the PR interval is lengthened beyond 0.20 seconds.read more >>
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