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(a) A coronary angiogram revealed no air embolus; however, 90% diffuse coronary stenosis was present from the orifice of segment 1 to segment 4 in the right coronary artery, just after balloon rewarming and deflation. The cryoballoon during ablation is depicted with a dotted line. (b) Angiographic stenosis improved within 2 min after the intracoronary injection of nitroglycerine (2.5 mg).
