- ACE (Angiotensin Converting Enzyme) Inhibitors — see Congestive Heart Failure; High Blood Pressure; High Blood Pressure, What Can Be Done
- Acute Coronary Syndrome
- Acute Myocardial Infarction — see Heart Attack
- Adams-Stokes Disease
- Added Sugars - see Sugars and Carbohydrates
- AED (Automated External Defibrillator) — see Cardiac Arrest
- AED Statistics — see Cardiopulmonary Resuscitation (CPR) Statistics
- Actin — see Blood Tests for Rapid Detection of Heart Attack
- AHA Diet — see AHA Diet and Lifestyle Recommendations; Step I and Step II Diets (and the TLC)
- Air Pollution, Heart Disease and Stroke
- Alcohol and Stroke — see Alcohol, Wine and Cardiovascular Disease; Stroke Risk Factors
- Alcohol, Wine and Cardiovascular Disease
- Alpha-Linolenic Acid (LNA) (Omega-3 Fatty Acid) — see Fish Oil
- Alternatives to Coronary Artery Bypass Surgery — see Bypass Surgery, Coronary Artery ;Minimally Invasive Heart Surgery; Stent Procedure
- Ambulatory Electrocardiography
- Aneurysm, Brain
- Angina Pectoris
- Angina Pectoris Treatments
- Angina, Statistics — see Heart Attack and Angina Statistics
- Angiography, Coronary — see Coronary Angiography
- Angioplasty and Cardiac Revascularization Treatments and Statistics
- Angioplasty, Balloon — see Percutaneous Coronary Interventions
- Angioplasty, Laser
- Angiotensin Converting Enzyme (ACE) Inhibitors — seeCongestive Heart Failure
- Antibiotic Prophylaxis — see Dental Care and Heart Disease; Heart Valves; Infective Endocarditis; Rheumatic Heart Disease / Rheumatic Fever
- Anticoagulants
- Antiplatelet Agents
- Aortic Dissection
- Aortic Regurgitation
- Aortic Stenosis (AS) — see Congenital Cardiovascular Defects; Heart Valves
- Aphasia
- Appliances That May Interfere With Pacemakers — see Pacemakers
- Arrhythmias
- Arteriography
- Artificial Heart
- Artificial Heart Valve — see Heart Valve Surgery
- ASH (Asymmetric Septal Hypertrophy) — see Cardiomyopathy
- Aspirin in Heart Attack and Stroke Prevention
- Assessment of Patients With Heart Disease — see Classification of Functional Capacity and Objective Assessment of Patients With Diseases of the Heart
- Atherectomy
- Atherosclerosis
- Atrial Fibrillation
- Automated External Defibrillator (AED) — see Defibrillation; Sudden Cardiac Death
- Automated Internal Defibrillator — see Sudden Cardiac Death; Ventricular Fibrillation
- Autonomic Failure — see Low Blood Pressure
- A-V Block or AV Block, First Degree — see Heart Block
- A-V Node or AV Node (Atrioventricular Node) — see Heart Block; Radiofrequency Ablation
- B Vitamins and Homocysteine — see Homocysteine, Folic Acid and Cardiovascular Disease
- Beans, Dried, as Meat Substitute — see Meat, Poultry and Fish; Vegetarian Diets
- Beans, Green — see Vegetables and Fruits
- Beverages — see Milk Products
- Bile Acid Sequestrants — see Cholesterol-Lowering Drugs
- Birth Control Pills — see Oral Contraceptives
- Blood Clot — see Thrombolysis, Thrombosis, Thrombus
- Blood Flow — see Circulatory System
- Blood Pressure
- Blood Pressure, Causes — see High Blood Pressure Causes
- Blood Pressure, Children — see High Blood Pressure in Children
- Blood Pressure Levels
- Blood Pressure Statistics — see High Blood Pressure Statistics
- Body Composition Tests
- Brain Attack — see Stroke
- Bran — see Fiber
- Breast Cancer Risk and Hormone Therapy — see Estrogen and Cardiovascular Diseases in Women
- Bundle Branch Block
- Cocaine, Marijuana and Other Drugs
- Coconut Oil — see Fats and Oils
- Cold Weather and Cardiovascular Disease
- Collateral Circulation
- Coma, Diabetic — see Diabetes Mellitus; Hyperglycemia and Hypoglycemia
- Computer Imaging / Tomography
- Congenital Cardiovascular Defects Statistics
- Cooking Oils - see Cooking Oils (High in Monounsaturated Fats) and Cooking Oils (High in Polyunsaturated Fats)
- Coronary Artery Spasm
- DASH Diet Study — see Potassium
- Diabetes Mellitus Statistics
- Diastolic Dysfunction
- Diet and Nutrition Glossary - see Dictionary of Nutrition
- Diet and Lifestyle Recommendations
- Dietary Recommendations for Healthy Children
- Digitalis
- Dilated Aorta — see Marfan Syndrome
- Dipyridamole Stress Test — see Thallium Stress Test
- Dysphagia — see Stroke Effects
