Note citations are based on reference standards however formatting rules can vary widely between applications and fields of interest or study the specific requirements or preferences of your reviewing publisher classroom teacher institution or organization should be applied. Potassium is a major determinant of the electrophysiologic properties of the myocardial membrane and it plays an important role in the occurrence of arrhythmia. Both reduced serum potassium hypokalemia and increased serum potassium hyperkalemia can if sufficiently severe be associated with potentially lethal cardiac arrhythmia a recent study sought to determine the impact of plasma potassium concentration for patient survival following myocardial infarction. Ventricular arrhythmias in patients with myocardial infarction and ischaemia the role of serum potassium solomon rj an association between low serum potassium concentrations and ventricular arrhythmias has been observed by a number of investigators in patients with both acute myocardial infarction and symptomatic angina. Recent studies indicate that hypokalemia is an independent risk factor of ventricular arrhythmia early in acute myocardial infarction but a definite causal role of potassium remains to be shown the importance of catecholamines versus serum potassium levels in occurrence of arrhythmia has not been clarified
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