Intracoronary thrombolysis combined with drug balloon angioplasty in a young ST-segment elevation myocardial infarction patient: A case report

Figure 2 Transient evolution of electrocardiogram in hyperacute myocardial infarction. A: Baseline electrocardiogram (ECG) on January 29, 2018; B and C: Initial emergency ECG at 11:38 on June 24, 2019, showing atrial fibrillation with ST-segment elevation or depression in some leads, ventricular premature beats, and spontaneous conversion of atrial fibrillation to sinus rhythm with second-degree type I atrioventricular block within one minute; D and E: ECG during syncope at 11:40 on June 24, 2019, showing torsades de pointes ventricular tachycardia (TdP), with TdP lasting approximately ten seconds before spontaneous conversion to sinus rhythm with ST-segment elevation or depression in some leads.