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