17.14: Angina IV: Management

Introduction

The management of angina requires a comprehensive approach that includes pharmacological therapies, medical procedures, and lifestyle modifications.

Pharmacological Therapies

• Antiplatelet agents, such as aspirin, clopidogrel, prasugrel, and ticagrelor, play a pivotal role in preventing thrombus formation in patients with angina. These medications inhibit platelet aggregation and reduce the likelihood of myocardial infarction and other cardiovascular events.
• Anticoagulants, including heparin and direct oral anticoagulants (DOACs), inhibit the formation of blood clots in patients with unstable angina or those undergoing percutaneous coronary intervention (PCI).
• Angiotensin receptor blockers (ARBs), such as losartan and valsartan, are used in patients who are intolerant to ACE inhibitors. They provide similar benefits by blocking the effects of angiotensin II, leading to vasodilation and reduced blood pressure.
• Nitrates, such as nitroglycerin and isosorbide dinitrate, effectively relieve angina symptoms by dilating the coronary arteries and increasing blood flow to the myocardium.
• Beta-blockers, such as metoprolol and atenolol, reduce myocardial oxygen demand by lowering the heart rate and contractility.
• Calcium channel blockers, including amlodipine and diltiazem, reduce myocardial oxygen demand by dilating the coronary arteries and decreasing afterload. They are especially useful in patients who cannot tolerate beta-blockers.

Medical Management Procedures

• Percutaneous coronary intervention (PCI), commonly known as angioplasty, involves inserting a balloon catheter into a narrowed coronary artery. The balloon is inflated or widened to open the artery, and a stent is often placed to keep it open, restoring blood flow to the heart.
• Coronary artery bypass grafting (CABG) is a surgical procedure that involves creating a bypass around blocked coronary arteries using grafts from other parts of the body. This procedure is recommended for patients with severe CAD or coronary artery disease or those who do not respond to different treatments.

Lifestyle Modifications

• Cigarette Smoking Cessation: Smoking cessation is one of the most critical lifestyle changes because smoking leads to the progression of atherosclerosis and increases the risk of myocardial infarction.
• Cholesterol (Lipid) Management: Patients with angina should aim to achieve healthy lipid levels through dietary changes, physical activity, and lipid-lowering medications, like statins, as prescribed.
• Diet (Weight Management): A heart-healthy diet with fewer saturated fats, trans fats, and cholesterol is essential for weight management and the prevention of further cardiovascular events. Patients are encouraged to consume a well-balanced diet of whole grains, fruits, lean proteins, and vegetables.
• Diabetes Management: Effective blood glucose control is critical in patients with diabetes and angina. Patients should follow their diabetes management plan, which includes medications, dietary modifications, and regular monitoring of blood glucose levels.
• Education: Patients and family members should be informed about the nature of the condition, the importance of adherence to treatment plans, and the need for regular follow-up with their healthcare provider.
• Exercise: Patients should engage in moderate-intensity aerobic exercise for at least 150 minutes per week, as tolerated.
• Flu Vaccination: Annual influenza vaccination is advised for patients with angina to prevent flu-related complications, which can exacerbate cardiovascular conditions.