PMC9833358_01
ECG of the patients before and after surgery. (a) is the first ECG of the patients before surgery, which shows frequent ventricular premature beats (red arrow); (b) is the second ECG of the patients before surgery with no obvious change; (c) is the third ECG of the patients before surgery, which shows precordial lead (black arrow). (d) is the third ECG of the patients after surgery, which shows flattened low T waves in leads V2 to V6 (red arrow); (e) is the third ECG of the patients after surgery, which shows inverted T wave in leads I aVL V2 to V6 (red arrow) and the formation of pathological Q wave and slight elevation of ST segment in leads III and AVF (black arrow); (f) is the third ECG of the patients after surgery, which shows inverted T wave in leads I aVL V2 to V6 (red arrow) and the formation of pathological Q wave and slight elevation of ST segment in leads III and AVF (black arrow).
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On admission, his vital signs were unremarkable except for the increase in the blood pressure (182/119 mmHg) and random blood glucose (16.9 mol/L). 18-ECG (Figure 1) showed a sinus rhythm and frequent ventricular premature beats. On account of chest pain with recurring, the patient underwent emergent coronary angiography which revealed an occlusion of proximal left anterior descending (LAD) coronary artery with thrombolysis in myocardial infarction (TIMI) 0 flow (Figure 1). T was 0.014 mug/L, and ECG (Figure 1) showed inverted T wave in leads I, aVL,V2 to V6 and the formation of pathological Q wave and slight elevation of ST segment in leads III and AVF. The patient was discharged on May 2, 2021 with a hypersensitive troponin T of 0.009 mug/L.
Emergent coronary angiography of the patient. (a) Emergent coronary angiography showed complete proximal occlusion of the anterior descending branch (red arrow), with TIMI 0 flow at the distal segment. (b) No stenosis was observed in the right coronary artery. (c) Percutaneous transluminal coronary angioplasty (PTCA) wire (red arrow) passes through the broken end, with TIMI 1 flow at the distal segment. (d) After the deployment of a graft stent (red arrow), the arteries with no stenosis, with TIMI 3 flow
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After a 3.0 x 33 mm Firebird Drug Eluting Stent was implanted in proximal LAD, TIMI flow improved to grade 3 (Figure 2). Postoperative examination showed that the hypersensitive troponin T was 0.012 mug/L (reference range: 0-0.014 mug/L), and ECG (Figure 2) showed flattened low T waves in leads V2 to V6.