Acute coronary artery stent thrombosis caused by a spasm: A case report

Figure 1 The first electrocardiogram of the patient at the emergency department shows inferior myocardial infarction.

Figure 2 Photographs of the patient’s first emergency percutaneous coronary intervention. A: 60%-70% diffuse stenosis in the proximal part of the right coronary artery, approximately 50% stenosis in the middle part, and total occlusion beyond the middle and distal parts; B: After balloon dilation, digital subtraction angiography shows 90% stenosis in the middle and distal parts of the right coronary and 90% stenosis in the distal part; C: Stenosis of the distal right coronary artery has disappeared after injecting 2 mL of nitroglycerin; D: No stenosis in the middle or distal part of the right coronary artery after stent implantation, with Thrombolysis in Myocardial Infarction flow grade 3.

Figure 3 The electrocardiogram shows inferior myocardial infarction after the patient has taken a bath.

Figure 4 Acute thrombosis in a stent undergoing emergency percutaneous coronary intervention. A: The proximal part of the right coronary artery stent is occluded; B: After thrombus formation in the balloon-expanded stent, 90% stenosis of the distal right coronary artery is seen on the radiograph; C: The distal part of the right coronary artery is patent after the second nitroglycerin administration into the coronary artery, with Thrombolysis in Myocardial Infarction flow grade 3.

Figure 5 Intravascular ultrasound shows coronary stenosis. A: The distal end of the right coronary artery shows no stenosis; B: The stent adheres well and shows no stenosis.