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Atrioventricular block

Atrioventricular block

(Science: cardiology) a conduction disturbance that results in the inappropriate delay (or complete inability) of a electrical impulse, generated in the atria, to reach the ventricles (via the atrioventricular node).

clinical types are divided into first (nonserious), second and third degree (most serious).

Some drugs may precipitate atrioventricular block (for example clonidine, methyldopa, verapamil). A permanent pacemaker may be required for a third degree (complete) heart block.

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During a complete bundle branch block, many ectopic pacemakers in the ventricles may take over the action of the SA ... The ventricles relax B. The aorta relaxes C. The semi lunar valaves open D. The atrioventricular valves open

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by mslazy
Mon Nov 15, 2010 5:12 am
Forum: General Discussion
Topic: I'm not sure of my answer and pls help and explain
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