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Coronary artery angiography shows coronary allograft vasculopathy. (a) Image taken before the intervention. (b) Image taken immediately after the intervention with a drug-coated balloon. (c) Image taken 7 months after the intervention
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Severe stenosis (90% blockage) was identified in the proximal left anterior descending branch on coronary angiography [Figure 1a], and the fractional flow reserve was as low as 0.64. After progressing to the left coronary artery with a 6-Fr Left Judkins Guiding Catheter and 6-Fr guide extension catheter and performing stepwise predilatation with Cutting Balloon (Flextome  2.0-10 mm and 2.25-10 mm, each in turn), DCB expansion (SeQuent  Expansion with 2.5-15 mm) was performed [Figure 1b]. Postoperative follow-up at 7 months revealed no restenosis and sufficient coronary artery patency [Figures 1c and 2c].
Optical coherence tomography images taken at the same time as coronary artery angiography. (a) Image taken before the intervention. (b) Image taken immediately after the intervention with a drug-coated balloon. (c) Image taken 7 months after the intervention
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Optical coherence tomography was used to confirm the expansion [Figure 2a and b]. Postoperative follow-up at 7 months revealed no restenosis and sufficient coronary artery patency [Figures 1c and 2c].