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 …

Electrolyte disorders can alter cardiac ionic currents kinetics and depending on the changes
can promote proarrhythmic or antiarrhythmic effects. The present report reviews the …

Studies of the electrophysiologic properties of the single myocardial fibers which contribute
to the understanding of the relation between electrolytes and arrhythmias have been …

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 …

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 …

In view of evidence suggesting an association of mild hypokalaemia with cardiac arrhythmia,
the arrhythmogenic potentials of potassium losing and potassium sparing diuretic treatments …

Interactions of potassium and antiarrhythmic agents on ventricular myocardial
electrophysiology were studied in 25 isolated, perfused rabbit hearts by utilizing an …

Abnormal excitability of myocardial cells may give rise to ectopic beats and initiate re-entry
around an anatomical or functional obstacle. As K+ currents control the repolarization …

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 …

It is well known that changes in serum potassium cause ventricular arrhythmias as a result of
clearly documented changes in the electrophysiological characteristics of single fibers …