case_images: PMC10867548_01
case_images: Electrocardiogram showing typical atrial flutter with a variable block (case one).
case_images: cureus-0016-00000052344-i01.jpg
case_images: PMC10867548_01_cureus-0016-00000052344-i01.jpg
case_images: FIG1
case_images: His electrocardiography (ECG) showed a typical counter-clockwise atrial flutter (Figure 1).
case_images: Electrocardiogram showing reversal to sinus rhythm post electrical cardioversion (case one).
case_images: cureus-0016-00000052344-i02.jpg
case_images: PMC10867548_01_cureus-0016-00000052344-i02.jpg
case_images: FIG2
case_images: The tachycardia terminated with a single synchronized cardioversion (Figure 2).
case_images: PMC10867548_02
case_images: Electrocardiogram showing ST elevation at leads I, AVL, and V2-V4 with reciprocal changes (case two).
case_images: cureus-0016-00000052344-i03.jpg
case_images: PMC10867548_02_cureus-0016-00000052344-i03.jpg
case_images: FIG3
case_images: Initial ECG showed ST elevation in leads I, AVL, and V2-V6 (Figure 3).
case_images: Post-thrombolysis electrocardiogram showing resolution of ST elevation in leads I, AVL, and V2-V4 (case two).
case_images: cureus-0016-00000052344-i04.jpg
case_images: PMC10867548_02_cureus-0016-00000052344-i04.jpg
case_images: FIG4
case_images: He was successfully thrombolyzed with intravenous (IV) streptokinase 1.5 million units, and ECG showed resolution of ST-segment elevation (Figure 4).
case_images: Anteroposterior cranial view of coronary angiography showing mild stenosis (labeled arrow) at the proximal left anterior descending artery (case two).
case_images: cureus-0016-00000052344-i05.jpg
case_images: PMC10867548_02_cureus-0016-00000052344-i05.jpg
case_images: FIG5
case_images: Subsequently, coronary angiography was done during the same admission, which revealed non-obstructive coronary stenosis at the proximal left anterior descending artery, as shown in Figure 5.
case_images: Anteroposterior caudal view of coronary angiography showing a normal left circumflex artery (case two).
case_images: cureus-0016-00000052344-i06.jpg
case_images: PMC10867548_02_cureus-0016-00000052344-i06.jpg
case_images: FIG6
case_images: Other coronary vessels (left circumflex artery and right coronary artery) were normal (Figures 6, 7).
case_images: Anteroposterior cranial view of coronary angiography showing a normal right coronary artery (case two).
case_images: cureus-0016-00000052344-i07.jpg
case_images: PMC10867548_02_cureus-0016-00000052344-i07.jpg
case_images: FIG7
case_images: Other coronary vessels (left circumflex artery and right coronary artery) were normal (Figures 6, 7).