case_images: PMC8590254_01
case_images: normal sinus rhythm, normal axis deviation, no significant ST-t changes, long QTc interval: QTc = 600ms
case_images: PAMJ-40-67-g001.jpg
case_images: PMC8590254_01_PAMJ-40-67-g001.jpg
case_images: F1
case_images: Diagnostic assessment: the long corrected QT interval (QTc = 600ms) and a sinus rhythm without ischemic changes were seen in the Initial ECG (Figure 1).
case_images: coronary angiogram revealed normal coronary arteries
case_images: PAMJ-40-67-g002.jpg
case_images: PMC8590254_01_PAMJ-40-67-g002.jpg
case_images: F2
case_images: Coronary angiography revealed no significant coronary artery disease (CAD) (Figure 2).
case_images: normal sinus rhythm, normal axis deviation, no significant ST-t changes, normal QT interval
case_images: PAMJ-40-67-g003.jpg
case_images: PMC8590254_01_PAMJ-40-67-g003.jpg
case_images: F3
case_images: Within one week the QT interval was completely corrected (Figure 3), and both troponin I and CRP were reduced.