Hsieh Ming-Hsiung, Cheng Choun-Yi, Chan Paul, Tai Ching-Tai, Chen Shih-Ann
Division of Cardiovascular Medicine, Taipei Medical University-Wan Fang Hospital, Taipei, Taiwan, ROC.
J Interv Card Electrophysiol. 2003 Feb;8(1):41-4. doi: 10.1023/a:1022387814254.
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.
