PMC8017133_01
Twelve-lead electrocardiogram (ECG) on admission (A) and before discharge (B). QTc interval was 455 ms (A) and 432 ms (B), respectively. Herat rate correction of QT interval was performed by Bazett's formula.
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F1
ECG showed sinus rhythm, left axis deviation, flat or inverted T waves observed in II, III, aVF, V5-6, and QT prolongation (grade I), i.e., QT interval corrected by heart rate (QTc = QT/RR0.5) was 455 ms (Figure 1A). Considering possible ischemic T wave changes (Figure 1A), coronary angiogram was performed. QTc interval after the successful PCI and restoration of hypokalemia (K of 4.0 mEq/L) was 432 ms (Figure 1B), and she discharged on foot 33 days after admission without any neurological sequelae of cardiac arrest.
Chest X-ray on admission (A) and chest computed tomography during hospitalization (B).
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F2
Chest X-ray showed cardiomegaly and chest computed tomography demonstrated bilateral pleural effusion (Figures 2A,B).
Right coronary angiogram showed severe (99%) stenotic lesion in segment 1 (A). Collateral circulation from left anterior descending artery was visualized (B). Stent implantation was performed (C) and right coronary angioplasty was completed (D).
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F3
Stenotic lesion (99%) was found in the right coronary artery (segment 1) and collateral circulation supplied from left anterior descending artery was observed (Figures 3A,B). Percutaneous coronary intervention (PCI) was completed successfully by stent implantation at the culprit lesion (Figures 3C,D).