A 4-year-old male neutered English bulldog presented for heart murmur evaluation. Echocardiography identified severe pulmonic stenosis (an echocardiography-derived transpulmonary pressure gradient of 100 mmHg), and computed tomography confirmed the presence of an anomalous coronary artery with a prepulmonic course of the left coronary artery arising from the right coronary ostium. Before artificial pulmonic valve implantation, a coronary compression test was performed. A simultaneous aortic root angiogram and pulmonic balloon valvuloplasty revealed complete occlusion of the circumflex branch. Artificial valve implantation was aborted with concern for fatal coronary compression after implantation. Coronary compression testing is a critical component of the evaluation before catheter-based implantation of conduits across the pulmonic valve.

一只 4 岁雄性已绝育英国斗牛犬接受心脏杂音评估。超声心动图确定了严重的肺动脉狭窄（超声心动图衍生的跨肺压梯度为 100 mmHg），计算机断层扫描证实存在异常冠状动脉，左冠状动脉的肺前病变起源于右冠状动脉口。在人工肺动脉瓣植入术之前，进行了冠状动脉压缩试验。同时进行的主动脉根部血管造影和肺动脉球囊瓣膜成形术显示回旋支完全闭塞。人工瓣膜植入因植入后致命的冠状动脉压迫而被中止。冠状动脉压缩测试是基于导管植入跨肺动脉瓣导管之前评估的关键组成部分。