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[Surgical treatment of acute coronary heart disease]
Insights
Emergency revascularization is key for acute coronary syndromes. For unstable angina, coronary angiography followed by bypass surgery or angioplasty is recommended for eligible patients, offering acceptable outcomes.
Area of Science:
- Cardiology
- Vascular Surgery
- Interventional Cardiology
Context:
- Acute coronary syndromes (ACS) necessitate timely intervention.
- Unstable angina management guidelines emphasize medical stabilization.
- A significant subset of medically treated unstable angina patients experience chronic symptoms.
Purpose:
- To evaluate the role and outcomes of revascularization strategies in acute coronary disease.
- To assess the efficacy of coronary angiography and subsequent interventions for unstable angina.
- To determine the surgical approach for mechanical complications of acute myocardial infarction.
Summary:
- Emergency revascularization is crucial for acute ischemia in ACS.
- For unstable angina, coronary angiography is advised for younger patients, with bypass surgery for multi-vessel or left main disease, and angioplasty for isolated LAD stenosis.
- Surgical interventions for acute myocardial infarction focus on mechanical complications and post-infarction angina, with high but acceptable mortality rates.
Impact:
- Revascularization for unstable angina demonstrates acceptable risk and outcomes.
- Surgical treatment for post-infarction complications offers a chance for improvement despite high mortality.
- This study supports aggressive revascularization strategies in select ACS patients.
Abstract:
The main and most attractive surgical measure in acute coronary disease is emergency revascularisation of acute ischemia. As far as unstable angina is concerned, the recommendations of the National Cooperative Study Group are more or less universally accepted, which means that emergency revascularisation is reserved for patients in whom stabilisation of angina with vigorous medical treatment is unsuccessful. On the other hand, it has been shown that a large proportion of patients in whom unstable angina had been successfully stabilized subsequently suffered from severe chronic angina. The author therefore recommends performing coronarography in all younger patients within a few days. If left main stem or three-vessel disease is documented by this investigation, aortocoronary bypass should be performed during the same hospitalisation. In cases with isolated proximal stenosis of the left anterior descending artery, transluminal dilatation should be considered. The author's own results confirm the general experience that revascularisation for unstable angina does not involve elevated risk. After established acute infarction, the role of surgery is confined to treatment of severe mechanical complications of infarction (acute aneurysm, ventricular septal defect, subvalvular mitral insufficiency) and aortocoronary bypass for postinfarction angina. The author's results show that early and late mortality are rather high, though a good late result can be achieved in about 50% of the cases. However, in view of the poor prognosis under conservative treatment, even this modest rate of success seems acceptable.