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Bradycardia: Difference between revisions
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bpm: beats per minute | bpm: beats per minute | ||
[BOX] | [BOX] | ||
=Conduction Disorders= | |||
==Sinus Node Dysfunction== | ==Sinus Node Dysfunction== | ||
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The Mobitz type I block is characterized by a progressively increased P-Q interval until atrial activation is blocked in the AV-node. Thereafter conduction is restored and this cycle repeats itself. Usually Mobitz type II block is located at a the atrioventricular node and rarely deteriorates to a more severe conduction block. | The Mobitz type I block is characterized by a progressively increased P-Q interval until atrial activation is blocked in the AV-node. Thereafter conduction is restored and this cycle repeats itself. Usually Mobitz type II block is located at a the atrioventricular node and rarely deteriorates to a more severe conduction block. | ||
====Mobitz II==== | ====Mobitz II==== | ||
When atrial activation is blocked, without progressivly increasing P-Q interval a Mobitz Type II AV block is present. This sudden failure of AV conduction is an omen of severe conduction disease in usually infra-Hision part of the atrioventricular conduction system. | When atrial activation is blocked, without progressivly increasing P-Q interval a Mobitz Type II AV block is present. This sudden failure of AV conduction is an omen of severe conduction disease in usually infra-Hision part of the atrioventricular conduction system. | ||
===Third Degree AV Block=== | ===Third Degree AV Block=== | ||
Third degree AV block is complete block of conduction between atria en ventricle. Atrial and ventricular rhythm are complete dissociated. | Third degree AV block is complete block of conduction between atria en ventricle. Atrial and ventricular rhythm are complete dissociated. | ||