A 71-year-old man with a history of coronary artery bypass graft using the left internal mammary artery (LIMA) to the left anterior descending (LAD) in 1997 presented with frequent ventricular tachycardia on routine pacemaker interrogation. He reported dyspnea on exertion and left leg claudication at 23 m. At rest, his blood pressure was 146/65 mm Hg measured on the right arm and 85/50 mm Hg on the left arm. Physical examination was notable for a diminished left radial pulse. In 2014, he experienced angina that resolved following placement of a drug-eluting stent in his LAD. Coronary angiography via the left femoral artery is displayed in the Figure.

一名71岁的男子，1997年有使用左内乳动脉（LIMA）至左前降支（LAD）进行冠状动脉搭桥术的病史，在常规起搏器询问中表现出频繁的室性心动过速。他报告了23 m时劳累呼吸困难和左腿lau行。休息时，右臂测得的血压为146/65 mm Hg，左臂测得的血压为85/50 mm Hg。体格检查发现左radial骨脉搏减弱。在2014年，他经历了心绞痛的缓解，此后在他的LAD中放置了药物洗脱支架。图中显示了通过左股动脉的冠状动脉造影。