Adult Cardiology Glossary
100 terms total — 24 showing — Last updated 15 Sep 2026
Ventricular septal defect
Congenital heart defect characterized by an abnormal opening in the wall separating the right and left ventricles, causing left-to-right shunting.
Anthracycline cardiomyopathy
Chemotherapy-induced heart muscle disease caused by anthracycline antibiotics, characterized by progressive left ventric...
aortic regurgitation
Backward flow of blood from the aorta into the left ventricle during diastole due to incompetent aortic valve.
Aortic stenosis
Narrowing of the aortic valve opening that restricts blood flow from the left ventricle to the aorta during systole.
atrial fibrillation
A common cardiac arrhythmia characterized by irregular and often rapid beating of the atrial chambers of the heart.
balloon valvuloplasty
A minimally invasive procedure using balloon dilation to treat stenotic heart valves.
bifurcation lesion
A coronary artery stenosis occurring at or near the division of a main vessel into two branches.
Brady-tachy syndrome
A form of sick sinus syndrome characterized by alternating periods of bradycardia and tachycardia. Often requires pacema...
bundle branch block
Conduction delay or block in the right or left bundle branches of the cardiac conduction system.
CABG
Coronary artery bypass grafting, a surgical procedure using grafts to reroute blood around blocked coronary arteries. Pr...
cardiac biomarker
Laboratory marker that indicates myocardial injury, stress, or dysfunction in cardiovascular disease.
Cardiac biomarkers
Blood-based molecules that are released during myocardial injury and used for diagnosis and risk stratification of acute...
cardiac catheterization
An invasive diagnostic procedure involving insertion of catheters into the heart and coronary vessels to assess cardiac...
cardiac index
Cardiac output normalized to body surface area, typically measured in L/min/m².
Cardiac output
The volume of blood pumped by the heart per minute, calculated as stroke volume multiplied by heart rate. Normal range i...
cardiac resynchronization therapy
Device therapy using biventricular pacing to improve coordination of heart contractions in heart failure patients.
cardiac tamponade
Life-threatening condition where fluid accumulation in the pericardial space compresses the heart, preventing normal fil...
Cardio-oncology
Subspecialty focused on cardiovascular complications of cancer treatment and management of cardiac disease in cancer pat...
cardiopulmonary exercise testing
A comprehensive assessment that measures cardiac, pulmonary, and metabolic responses to graded exercise.
chronotropic incompetence
Inability of the heart rate to increase appropriately during exercise or stress.
chronotropic reserve
The heart's ability to increase heart rate appropriately in response to increased metabolic demand or stress.
CK-MB
Creatine kinase-MB isoenzyme, a cardiac-specific enzyme released during myocardial injury. Less sensitive than troponin...
Class I recommendation
The highest level of clinical practice guideline recommendation, indicating strong evidence that a treatment is benefici...
collateral circulation
Alternative coronary blood flow pathways that develop to bypass significant coronary artery obstructions.
contrast-induced nephropathy
Acute kidney injury following intravascular contrast media administration, typically occurring within 48-72 hours.