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Postinfarction angina: results of early revascularization
Insights
Surgical revascularization within 30 days of myocardial infarction is effective for postinfarction angina. This procedure offers acceptable operative mortality in selected patients, with most remaining angina-free post-surgery.
Area of Science:
- Cardiology
- Cardiac Surgery
- Interventional Cardiology
Background:
- Postinfarction angina is a significant complication following acute myocardial infarction.
- Medical management of refractory postinfarction angina can be challenging.
- The role of early surgical revascularization remains an area of investigation.
Purpose of the Study:
- To evaluate the efficacy of surgical revascularization for postinfarction angina within 30 days of acute myocardial infarction.
- To assess operative mortality and clinical outcomes in patients undergoing early revascularization.
Main Methods:
- Retrospective review of 103 patients treated surgically for postinfarction angina between January 1979 and July 1982.
- Patients were categorized into three groups based on time to surgery: within 24 hours (Group A), within 7 days (Group B), and within 30 days (Group C).
- Data collected included patient demographics, infarction type, perioperative complications, and long-term follow-up outcomes.
Main Results:
- Overall in-hospital mortality was low (1.9%), with both deaths occurring in Group C.
- Early surgical intervention (Groups A and B) was associated with fewer perioperative complications compared to later intervention (Group C).
- Long-term follow-up (mean 15.4 months) showed no late myocardial infarctions and 96% of patients were angina-free; one late death was attributed to sternal wound infection.
Conclusions:
- Myocardial revascularization within 30 days post-myocardial infarction is a viable option for selected patients with refractory postinfarction angina.
- The procedure demonstrates acceptable operative mortality and favorable long-term outcomes, including significant angina relief.
- Early surgical intervention may be associated with a lower incidence of perioperative complications.
Abstract:
To assess the efficacy of surgical revascularization for postinfarction angina within 30 days of acute infarction, the clinical course of 103 patients treated surgically from January 1979 to July 1982 was reviewed. There were 84 men (82%) and 19 women (18%) with a mean age of 58 years (range 34 to 80). Group A (11 patients) underwent surgery within 24 hours of infarction, Group B (21 patients) within 7 days and Group C (71 patients) within 30 days. Eighty-four patients (82%) had subendocardial infarctions and 19 patients (18%) had transmural infarction. Transmural infarction was more common in patients in Group A (36%) than in those in either Group B (19%) or Group C (15%). There were two deaths, both in Group C (1.9%), within 30 days of surgery. The use of intraaortic balloon or inotropic support and the occurrence of major arrhythmias or perioperative infarction was noted in 30 patients (29%) (64% in Group A, 33% in Group B and 18% in Group C). The average time in the intensive care unit was 3.2 days, with an average total hospital stay after surgery of 8.3 days. Late follow-up (mean 15.4 months, range 1 to 39) is complete for 97 patients (97%). There were no late myocardial infarctions and 93 patients (96%) were essentially free of angina. The only late death (1.0%) was caused by septicemia from delayed sternal wound infection. This study suggests that myocardial revascularization within the first 30 days after myocardial infarction can be accomplished with an acceptable operative mortality in selected patients with postinfarction angina refractory to medical management.