BACKGROUND AND PURPOSE Stroke is independently associated with the common conditions of hypokalemia and supraventricular ectopy, and we hypothesize that the combination of excessive supraventricular ectopic activity and hypokalemia has a synergistic impact on the prognosis in terms of stroke in the general population. METHODS Subjects (55-75 years old) from the Copenhagen Holter Study cohort ...

OBJECTIVE To review the diagnosis and management of cardiac arrhythmias in a two-part presentation. DATA SOURCES Articles and published peer-review abstracts on tachycardias and bradycardias. SUMMARY OF REVIEW Normal cardiac rhythm originates from impulses generated within the sinus node. These impulses are conducted to the atrioventricular node where they are delayed before they are distri...

Aberrant ventricular conduction definition: It is a term applied to alterations in QRS contour of supraventricular beats resulting from impulse transmition during periods of physiologic refractoriness and/or depressed conductivity. The supraventricular electrical impulse is conducted abnormally through the ventricular conducting system. This results in a wide QRS complex that may be confused wi...