Circulation. 1975 Aug;52(2 Suppl):I61-5.
Twenty-one reoperations for relief of angina have been performed at Stanford Medical Center in patients who had had previously unsuccessful direct coronary artery surgery. Complete releif of angina was obtained in seven (33%), improvement of angina in six (29%), and no change in angina in eight (38%) after these operations. Reoperation was least successful in relieving angina when performed in patients with graft occlusion and most successful when performed in patients with new critical lesions or with previously unbypassed critical lesions (P less than 0.02). Reoperation was of greater benefit in patients with unstable angina than in those with stable angina (P less than 0.05). Four of the seven patients having no angina after reoperation sustained perioperative infarctions. Reoperation does not provide the same rate of angina relief as first operations; however, certain subgroups of patients may exhibit more favorable results.
斯坦福医疗中心对21例曾接受过直接冠状动脉手术但未成功的患者进行了再次手术以缓解心绞痛。这些手术后，7例（33%）患者的心绞痛完全缓解，6例（29%）患者的心绞痛有所改善，8例（38%）患者的心绞痛无变化。当对移植血管闭塞的患者进行再次手术时，缓解心绞痛最不成功；而对有新的严重病变或先前未搭桥的严重病变的患者进行再次手术时，最成功（P<0.02）。再次手术对不稳定型心绞痛患者的益处大于稳定型心绞痛患者（P<0.05）。再次手术后无心绞痛的7例患者中有4例发生围手术期梗死。再次手术不能提供与首次手术相同的心绞痛缓解率；然而，某些亚组患者可能会有更有利的结果。
