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Does AVNRT result to heart failure?
Does AVNRT result to heart failure?
AVNRT is a type of abnormal rhythm arises from malfunctioning of the AV node. For most individuals, the AV node conducts impulses along a single pathway.
In AVNRT, a second conducting pathway arises, confusing the electrical signals traveling from atria to ventricles. As a result, both the atria and ventricles beat at the same time instead of in sequence. This creates a fast heart rate — 120-250 beats per minute. Although the heartbeat is typically regular, rather than erratic, the heart is not pumping efficiently. Most AVNRT patients do not have underlying heart disease.
Because the heart is not pumping efficiently, it can result in heart failure. When the heart beats very fast there is not enough time to adequately fill and the reduced cardiac output can/will stress the heart. To compensate the left ventricle will enlarge, and an enlarged heart will be less able to pump forcefully.
Treatment to reduce heart rate, or ablation of the pathway.
In AVNRT, a second conducting pathway arises, confusing the electrical signals traveling from atria to ventricles. As a result, both the atria and ventricles beat at the same time instead of in sequence. This creates a fast heart rate — 120-250 beats per minute. Although the heartbeat is typically regular, rather than erratic, the heart is not pumping efficiently. Most AVNRT patients do not have underlying heart disease.
Because the heart is not pumping efficiently, it can result in heart failure. When the heart beats very fast there is not enough time to adequately fill and the reduced cardiac output can/will stress the heart. To compensate the left ventricle will enlarge, and an enlarged heart will be less able to pump forcefully.
Treatment to reduce heart rate, or ablation of the pathway.
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