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Optimal medical management of angina
Brian Noronha1, Edward Duncan, Jonathan A Byrne
1Department of Cardiology, GKT School of Medicine, Bessemer Road, London SE5 9PJ, UK.
Insights
Coronary artery disease, often presenting as angina pectoris, requires targeted treatments for both stable and unstable forms. Management focuses on reducing myocardial oxygen demand, preventing clots, and aggressive risk factor control to improve patient outcomes.
Area of Science:
- Cardiology
- Internal Medicine
Background:
- Coronary artery disease (CAD) is a leading global cause of disability.
- Angina pectoris, the most common manifestation of CAD, results from myocardial oxygen supply-demand imbalance.
- Stable angina is characterized by consistent symptoms, while unstable angina presents with new, worsening, or rest symptoms.
Purpose of the Study:
- To outline the pathophysiology and management strategies for stable and unstable angina.
- To emphasize the importance of risk factor modification in CAD.
- To highlight the need for timely intervention in unstable angina.
Main Methods:
- Review of established treatment protocols for stable and unstable angina.
- Discussion of pharmacological interventions including antiplatelets, beta-blockers, and nitrates.
- Consideration of interventional procedures like coronary revascularization.
Main Results:
- Stable angina management involves aspirin, beta-blockade, and additional antianginal agents.
- Aggressive risk factor treatment significantly reduces mortality in CAD patients.
- Unstable angina necessitates inpatient monitoring, antiplatelet/antithrombotic therapy, and potentially revascularization.
Conclusions:
- Effective management of angina requires a multi-faceted approach addressing both acute symptoms and underlying CAD.
- Early assessment and intervention are critical for patients with unstable angina to prevent ischemic events.
- Risk factor modification remains a cornerstone in the long-term management of coronary artery disease.
Abstract:
Coronary artery disease remains one of the principal causes of disability worldwide. Its most common manifestation is angina pectoris. Angina occurs due to an imbalance between myocardial oxygen demand and supply; it is classically precipitated by physical activity, emotion, eating, or cold weather. It is defined as stable when its frequency, severity, duration, time of appearance, and precipitating factors remain unchanged for 60 days. Treatment of patients with stable angina targets a number of factors that underlie its pathophysiology: aspirin as an antiplatelet agent, b-blockade to reduce myocardial oxygen demand, and additional antianginal drugs when symptoms are incompletely controlled by b-blockers alone. Furthermore, aggressive treatment of risk factors for the development of coronary artery disease confers a significant mortality benefit. Unstable angina is defined as symptoms developing at rest, on minimal exertion, and of increasing severity, duration, or frequency. It is associated with significant mortality; consequently, early assessment and intervention is essential to prevent worsening ischemia. Treatment includes close in-patient monitoring, administration of antiplatelet and antithrombotic drugs, and a combination of b-blockers, calcium antagonists, and intravenous nitrates where appropriate. Coronary revascularization should be considered in high-risk patients, and when conservative management strategies fail.