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Case Reports
. 2003 Feb;8(1):41-4.
doi: 10.1023/a:1022387814254.

Monophasic action potential-like electrocardiogram simulating acute myocardial infarction

Ming-Hsiung Hsieh  1 , Choun-Yi Cheng, Paul Chan, Ching-Tai Tai, Shih-Ann Chen
Affiliations
Case Reports

Monophasic action potential-like electrocardiogram simulating acute myocardial infarction

Ming-Hsiung Hsieh et al. J Interv Card Electrophysiol. 2003 Feb.

Abstract

Monophasic action potential-like electrocardiogram simulating acute myocardial infarction has been reported in patients with hyperkalemia. We report two cases presenting marked diffuse RS-T elevation resembling monophasic action potential. They had abnormal electrolyte levels, including hyperkalemia and hypocalcemia in case 1 and hypokalemia and hypocalcemia in case 2. The ECG abnormality returned to baseline after correction of potassium and calcium. We conclude that monophasic action potential-like electrocardiogram is caused by electrolyte disturbance other than acute myocardial infarction.

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