Heart Block
PATCH
Efficacy of hydroxychloroquine to reduce recurrence rate of congenital heart block.
Hydroxychloroquine halves recurrence of fetal heart block
In a cohort of pregnant women with prior maternal congenital heart block, hydroxychloroquine successfully reduced the risk for recurrent fetal blocks by more than 50%, according results from the PATCH trial.
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High Grade AV Block
High-grade AV block, also known as advanced heart block, is a form of third-degree heart block.
Left Anterior Fascicular Block: Who Cares?
We see this all the time: A routine ECG shows a left anterior fascicular block (also known as LAFB or left anterior hemiblock). Who cares? Does this mean anything, and is it any cause for concern? Let’s take a look. LAFB occurs when the anterior fascicle of the left bundle branch can no longer conduct action potentials. Review how to diagnose this on an ECG here.
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Third-Degree Atrioventricular (AV) Block ECG Review
Third-degree atrioventricular nodal block, also known as third-degree heart block or complete heart block, occurs when no action potentials conduct through the AV node.
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Bifascicular Block ECG Review
A bifascicular block on ECG is defined by the combination of a right bundle branch block and either a left anterior fascicular block or left posterior fascicular block.
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Lenegre's Disease (Lev's Disease)
Lenegre’s disease is idiopathic fibrosis of the cardiac conduction system resulting heart block.
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Atrioventricular Node (AV Node)
The atrioventricular node (AV Node) is a bundle of conduction cells that regulate the communication of atrial electrical activity with ventricular electrical activity.
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Trifascicular Block
A trifascicular block is the combination of a right bundle branch block, left anterior or posterior fascicular block and a first degree AV block (prolonged PR interval).
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Left Anterior Fascicular Block
A left anterior fascicular block (LAFB) also known as a left anterior hemiblock (LAHB) occurs when the anterior fascicle of the left bundle branch is no longer able to conduct action potentials.