2 Weiss et al Potassium and Arrhythmias subthreshold EADs, thereby initiating reentry
(Figure 3, black arrows). Under these conditions, reentry can have a special property called …

The focus of this article is hypokalemia, its electrophysiologic properties, and clinical
arrhythmias. The effects of potassium on the electrophysiologic properties of the heart have …

Hypokalemia is a common biochemical finding in cardiac patients and may represent a side
effect of diuretic therapy or result from endogenous activation of renin–angiotensin system …

While a number of electrolytes play a role in the genesis of the transmembrane action
potential (AP), the changes in the action potential most clearly related to arrhythmias are …

Worldwide, approximately three million people suffer sudden cardiac death annually. These
deaths often emerge from a complex interplay of substrates and triggers. Disturbed …

Increased plasma potassium may occur spontaneously or iatrogenically. At modest
hyperkalemia (K+∼ 5 to 7 mEq. per liter) a transient and minor acceleration of cardiac …

M yocardial ischaemia leads to a cascade of metabolic and electrophysiological events
which are interrelated and are caused by reduced availability of oxygen and substrate, by …

Hyperkalemia is a common clinical condition that can induce deadly cardiac arrhythmias.
Electrocardiographic manifestations of hyperkalemia vary from the classic sine-wave rhythm …

Double-barreled valinomycin K+-sensitive electrodes and floating microelectrodes were
used to monitor extracellular K+ concentration ([K+] o) and intracellular potential …

Background—Hypokalemia is known to promote ventricular arrhythmias, especially in
combination with class III antiarrhythmic drugs like dofetilide. Here, we evaluated the …