Related Experiment Videos
Treatment of chronic stable angina pectoris
1Department of Medicine, Mount Sinai Medical Center, New York, New York 10029.
Insights
Stratifying angina pectoris patients into low- or high-risk groups guides treatment. Combination therapy with beta blockers and isosorbide mononitrate effectively improves exercise duration in angina patients.
Area of Science:
- Cardiology
- Pharmacology
Background:
- Angina pectoris management involves risk stratification using clinical findings and diagnostic workups.
- Treatment strategies range from medical management for low-risk patients to revascularization (angioplasty or bypass surgery) for high-risk individuals.
Purpose of the Study:
- To review current approaches in risk stratification and treatment of angina pectoris.
- To evaluate the efficacy of different anti-ischemic drug combinations.
- To highlight the role of endothelial dysfunction in chronic stable angina.
Main Methods:
- Review of clinical findings, nuclear imaging, and coronary angiography for risk stratification.
- Analysis of studies comparing anti-ischemic drug therapies, including beta blockers, calcium antagonists, and nitrates.
- Consideration of revascularization outcomes versus medical therapy.
Main Results:
- Combination therapy with a beta blocker and isosorbide mononitrate demonstrated superior efficacy in increasing exercise duration compared to other regimens.
- Angioplasty effectively relieves symptoms in single-vessel disease but has high restenosis rates and costs.
- Surgery improves mortality in specific high-risk patient groups (left main disease or 3-vessel disease with impaired left ventricular function).
Conclusions:
- Risk stratification is crucial for tailoring angina pectoris treatment.
- Pharmacological and interventional strategies offer distinct benefits depending on disease severity and patient characteristics.
- Endothelial dysfunction is an important factor in chronic stable angina, potentially treatable with nitrates.
Abstract:
Patients with angina pectoris may be stratified into low- or high-risk categories on the basis of clinical findings and a careful workup, possibly including nuclear imaging of stress-induced abnormal perfusion or contractile patterns and coronary angiography. High-risk patients may require revascularization by angioplasty or bypass surgery, whereas low-risk patients can be managed medically. It is important to consider the impact of various anti-ischemic drugs on the myocardial demand-supply equation. A recent study indicated that the combination of a beta blocker plus isosorbide mononitrate is more effective in increasing exercise duration than is either the combination of a beta blocker and a calcium antagonist or triple therapy. In patients with single-vessel disease, angioplasty has been shown to be more effective than medical therapy in relieving symptoms, but the incidence of restenosis and the associated costs are high. Surgery favorably affects mortality in patients with left main coronary artery disease or 3-vessel disease with left ventricular impairment. New evidence suggests that endothelial dysfunction may play a more important role in chronic stable angina pectoris than has been appreciated and that such dysfunction may be treated with nitrates.