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

Figure 4 Comparison of the left coronary angiography images obtained in the same position. A: On June 24, 2019, the residual stenosis in the proximal segment of the left anterior descending artery (LAD) after the primary percutaneous coronary intervention was approximately 40%, and the net lumen gain at the site of the most substantial stenosis was approximately 2.3 mm (RAO 30.0°, CAU 30.0°); B: On June 19, 2023, approximately 25% residual stenosis was observed in the proximal LAD, and the net lumen gain at the site of the most substantial stenosis was approximately 3.0 mm (RAO 30.4°, CAU 29.9°).