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Adult Cardiology Glossary

100 terms total — 24 showing — Last updated 15 Sep 2026

Ventricular septal defect

Intermediate Technical IVT

Congenital heart defect characterized by an abnormal opening in the wall separating the right and left ventricles, causing left-to-right shunting.

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Anthracycline cardiomyopathy

Advanced Technical IVT

Chemotherapy-induced heart muscle disease caused by anthracycline antibiotics, characterized by progressive left ventric...

Technical Term Full entry →

aortic regurgitation

Intermediate Technical IVT

Backward flow of blood from the aorta into the left ventricle during diastole due to incompetent aortic valve.

Technical Term Full entry →

Aortic stenosis

Intermediate Technical IVT

Narrowing of the aortic valve opening that restricts blood flow from the left ventricle to the aorta during systole.

Technical Term Full entry →

atrial fibrillation

Intermediate Technical IVT

A common cardiac arrhythmia characterized by irregular and often rapid beating of the atrial chambers of the heart.

Technical Term Full entry →

balloon valvuloplasty

Intermediate Technical IVT

A minimally invasive procedure using balloon dilation to treat stenotic heart valves.

Technical Term Full entry →

bifurcation lesion

Professional Technical IVT

A coronary artery stenosis occurring at or near the division of a main vessel into two branches.

Technical Term Full entry →

Brady-tachy syndrome

Advanced Technical IVT

A form of sick sinus syndrome characterized by alternating periods of bradycardia and tachycardia. Often requires pacema...

Technical Term Full entry →

bundle branch block

Intermediate Technical IVT

Conduction delay or block in the right or left bundle branches of the cardiac conduction system.

BBB
Technical Term Full entry →

CABG

Intermediate Technical IVT

Coronary artery bypass grafting, a surgical procedure using grafts to reroute blood around blocked coronary arteries. Pr...

Abbreviation Full entry →

cardiac biomarker

Intermediate Technical IVT

Laboratory marker that indicates myocardial injury, stress, or dysfunction in cardiovascular disease.

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Cardiac biomarkers

Intermediate Technical IVT

Blood-based molecules that are released during myocardial injury and used for diagnosis and risk stratification of acute...

Technical Term Full entry →

cardiac catheterization

Professional Technical IVT

An invasive diagnostic procedure involving insertion of catheters into the heart and coronary vessels to assess cardiac...

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cardiac index

Intermediate Technical IVT

Cardiac output normalized to body surface area, typically measured in L/min/m².

CI
Technical Term Full entry →

Cardiac output

Intermediate Technical IVT

The volume of blood pumped by the heart per minute, calculated as stroke volume multiplied by heart rate. Normal range i...

CO
Technical Term Full entry →

Device therapy using biventricular pacing to improve coordination of heart contractions in heart failure patients.

Technical Term Full entry →

cardiac tamponade

Professional Technical IVT

Life-threatening condition where fluid accumulation in the pericardial space compresses the heart, preventing normal fil...

Technical Term Full entry →

Cardio-oncology

Professional Technical IVT

Subspecialty focused on cardiovascular complications of cancer treatment and management of cardiac disease in cancer pat...

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cardiopulmonary exercise testing

Professional Technical IVT

A comprehensive assessment that measures cardiac, pulmonary, and metabolic responses to graded exercise.

Technical Term Full entry →

chronotropic incompetence

Advanced Technical IVT

Inability of the heart rate to increase appropriately during exercise or stress.

Technical Term Full entry →

chronotropic reserve

Advanced Technical IVT

The heart's ability to increase heart rate appropriately in response to increased metabolic demand or stress.

Technical Term Full entry →

CK-MB

Intermediate Technical IVT

Creatine kinase-MB isoenzyme, a cardiac-specific enzyme released during myocardial injury. Less sensitive than troponin...

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Class I recommendation

Professional Formal IVT

The highest level of clinical practice guideline recommendation, indicating strong evidence that a treatment is benefici...

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collateral circulation

Intermediate Technical IVT

Alternative coronary blood flow pathways that develop to bypass significant coronary artery obstructions.

Technical Term Full entry →

contrast-induced nephropathy

Advanced Technical IVT

Acute kidney injury following intravascular contrast media administration, typically occurring within 48-72 hours.

Technical Term Full entry →
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