Heart Failure is a clinical syndrome in which the heart cannot pump enough blood to meet the body’s needs, or can do so only with abnormally high filling pressures. It is commonly used as a diagnosis when symptoms like shortness of breath and swelling are linked to impaired heart function. It is also used to describe a long-term condition that can fluctuate between stable periods and flare-ups. Clinicians use the term in cardiology clinics, emergency care, hospital medicine, and cardiac imaging reports.

Dressler Syndrome is a type of inflammation that can happen after the heart has been injured. It most often refers to pericarditis (inflammation of the sac around the heart) occurring weeks after a heart attack or heart surgery. It is discussed in cardiology when evaluating chest pain, fever, and fluid around the heart after a cardiac event. Clinicians also use the term within the broader group called post–cardiac injury syndromes.

A Left Ventricular Aneurysm is a bulging, weakened area in the wall of the left ventricle, the heart’s main pumping chamber. It most often develops after damage to heart muscle, such as from a prior heart attack. Clinicians use the term when describing heart structure on imaging tests and when planning treatment for symptoms or complications. It is discussed in cardiology clinics, hospital care, and cardiothoracic surgery planning.

Ventricular Septal Rupture is a tear in the wall (septum) that separates the heart’s two lower chambers. It creates an abnormal opening that lets blood pass between the left ventricle and right ventricle. It most often occurs as a complication after a heart attack, but it can happen in other settings. Clinicians use the term when diagnosing sudden heart failure or shock and when planning urgent repair.

Papillary Muscle Rupture is a tear of a small muscle inside the heart that helps the mitral valve close properly. It most often happens suddenly after a heart attack and can cause severe mitral valve leakage. It is commonly discussed in emergency cardiology, critical care, echocardiography, and cardiac surgery. It is an important diagnosis because it can lead to rapid heart and lung failure without prompt recognition.

Mechanical Complication of MI means a structural problem caused by heart muscle damage after a myocardial infarction (MI), also called a heart attack. It refers to physical “breakdowns” in the heart’s walls, valves, or supporting structures. The term is commonly used in emergency care, cardiac intensive care units, echocardiography labs, and cardiothoracic surgery discussions. It helps clinicians describe urgent, high-risk causes of shock, new heart murmurs, or sudden worsening after MI.

Cardiogenic Shock is a life-threatening state where the heart cannot pump enough blood to meet the body’s needs. It can happen suddenly, most commonly during or after a major heart problem such as a heart attack. It is discussed in emergency care, intensive care, and cardiology because it affects blood pressure and organ perfusion. It is a clinical diagnosis that guides how clinicians prioritize testing and urgent supportive treatments.

Coronary Microvascular Dysfunction describes problems in the heart’s smallest blood vessels that can limit blood flow. It can cause chest discomfort or shortness of breath even when larger coronary arteries look normal or only mildly narrowed. It is commonly discussed in cardiology when evaluating angina symptoms, “normal” angiograms, or ischemia on stress testing. It is also relevant in some people with heart failure symptoms despite a normal pumping function.

MINOCA stands for myocardial infarction with non-obstructive coronary arteries. It describes a heart attack pattern where angiography does not show a major blocked coronary artery. MINOCA is commonly used in emergency cardiology and cardiac catheterization (cath) lab reports. It is best understood as a “working diagnosis” that prompts a careful search for the true cause.

Microvascular Angina is chest discomfort or angina-like symptoms caused by problems in the heart’s smallest blood vessels. It can occur even when the major coronary arteries look normal or only mildly narrowed on angiography. It is commonly discussed in cardiology clinics and chest pain evaluations when symptoms persist without a clear “blocked artery” explanation. It is also referred to within the broader concept of ischemia with no obstructive coronary arteries (often shortened to INOCA).

Vasospastic Angina is chest discomfort caused by a temporary spasm (sudden tightening) of a coronary artery. The spasm briefly reduces blood flow to part of the heart muscle, even when an artery may look normal between episodes. It is commonly discussed in cardiology clinics and emergency settings when symptoms occur at rest or in cycles (often at night or early morning).

Prinzmetal Angina is chest discomfort caused by a temporary spasm of a coronary artery. It typically happens at rest rather than during exercise. It can produce short-lived but significant reductions in blood flow to the heart muscle. Clinicians use the term to describe a specific pattern of angina linked to coronary vasospasm.

Coronary Spasm is a sudden, temporary tightening of a coronary artery. It can reduce blood flow to part of the heart muscle for minutes at a time. It is most commonly discussed as a cause of chest pain and ischemia with little or no fixed blockage. Clinicians also refer to it when evaluating angina-like symptoms, abnormal ECG changes, or unexplained cardiac events.

Plaque Rupture is a tear or break in the surface (“cap”) of an atherosclerotic plaque inside an artery. It can trigger clot formation and sudden narrowing or blockage of blood flow. It is most often discussed in coronary artery disease (heart arteries), but it can also occur in carotid and peripheral arteries. Clinicians use the term to explain some heart attacks, unstable angina, and certain strokes.

Coronary Thrombosis is the formation of a blood clot (thrombus) inside a coronary artery. Coronary arteries are the vessels that supply oxygen-rich blood to the heart muscle. When a clot significantly narrows or blocks flow, the heart muscle can become injured. The term is most commonly used in the context of acute coronary syndromes, including heart attack.

Myocardial Ischemia means the heart muscle is not getting enough oxygen-rich blood. It is usually related to reduced blood flow through the coronary arteries. It is a common concept in chest pain evaluation, stress testing, and coronary artery disease care. Clinicians use the term to describe a physiologic problem that can be temporary or progress to heart damage.

Ischemic Heart Disease is a condition where parts of the heart muscle receive too little blood flow and oxygen. It most often relates to reduced flow through the coronary arteries, the vessels that supply the heart. It is a common term used in clinics, hospitals, cardiac testing reports, and discharge summaries. It is also used in research and medical coding as an umbrella diagnosis.

Silent Ischemia means reduced blood flow to the heart muscle without typical chest pain. It is a form of myocardial ischemia that can occur without obvious warning symptoms. Clinicians use the term when ischemia is detected on tests such as stress studies or ECG monitoring. It is discussed in cardiology because it can influence risk assessment and management planning.

NSTEMI stands for **non–ST-elevation myocardial infarction**. It is a type of **heart attack** diagnosed using symptoms, an electrocardiogram (ECG), and blood tests for heart muscle injury. NSTEMI is commonly used in emergency departments, hospitals, and cardiology clinics to describe a specific pattern of myocardial infarction. The term helps clinicians communicate risk and plan further testing and treatment.

Non-ST-Elevation Myocardial Infarction is a type of heart attack caused by injury and death of heart muscle cells. It is defined by a rise and/or fall in cardiac troponin (a blood marker of heart muscle damage) without ST-elevation on the ECG. It is commonly used in emergency departments, inpatient cardiology, and intensive care settings to classify acute coronary syndromes. It helps clinicians estimate risk and choose appropriate monitoring and testing pathways.