Acquired heart disease
prone to arrhythmias
Acquired heart disease --- such as damage caused to the
heart muscle by a heart attack --- is the most important factor making a person
prone to arrhythmias. Scarring or abnormal tissue deposits can cause
bradycardia by interfering with the work of the sinus node or overall AV
conduction. Likewise, they can cause tachycardia (originating in either the
atria or ventricles) by causing cells to fire abnormally or by creating islands
of electrically inert tissue. (Impulses circulate in a reentrant fashion around
these areas.)
No comments:
Post a Comment