Tombstone ST elevation in Takotsubo cardiomyopathy
The present case has been presented in the journal Acute Medicine & Surgery.

A 70‐year‐old woman with alcoholism was admitted due to hypokalemic periodic paralysis. The patient's vital signs on presentation were: heart rate, 118 b.p.m.; blood pressure, 98/56 mmHg, and serum potassium level, 1.8 mmol/L. An electrocardiogram (ECG) on presentation showed an upslope‐type ST segment depression in the pericardial leads and prolonged corrected QT interval.

One day after admission, she suddenly experienced chest tightness after correction of hypokalemia, and her potassium level was 3.5 mmol/L. The ECG revealed massive ST-segment elevation in the limb and pericardial leads, which is called “tombstone” ST elevation without reciprocal change.

Emergency coronary angiography demonstrated normal coronary arteries, and left ventriculography (Video S1) revealed apical ballooning during systole, consistent with Takotsubo cardiomyopathy. Treatment with a beta‐blocker (bisoprolol) was initiated. Four days after admission, an inverted T wave appeared on ECG in pericardial leads, and echocardiography revealed improvement in the hypokinesis in the apical segment.

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