The Right Atrium is one of the four chambers of the heart. It receives oxygen-poor blood returning from the body and directs it to the right ventricle. Clinicians discuss the Right Atrium when evaluating right-sided heart function, rhythm problems, and venous blood flow. It is also a key landmark in common heart imaging and catheter-based procedures.

The Left Atrium is one of the four chambers of the heart. It receives oxygen-rich blood from the lungs and passes it to the left ventricle. Clinicians refer to the Left Atrium in imaging reports, rhythm evaluations, and valve disease assessments. It is also discussed in conditions linked to atrial fibrillation and stroke risk.

Heart Chambers are the four hollow spaces inside the heart that collect and pump blood. They include two atria (upper chambers) and two ventricles (lower chambers). Clinicians refer to Heart Chambers when explaining blood flow, heart function, and many common cardiac tests.

The Pericardial Sac is the thin, protective covering that surrounds the heart. It helps the heart move smoothly as it beats and keeps it positioned in the chest. Clinicians refer to the Pericardial Sac during heart imaging, emergency evaluation, and cardiac surgery. Problems involving the Pericardial Sac can affect breathing, chest comfort, and blood flow.

The Pericardial Space is the thin, fluid-containing gap around the heart. It sits between two layers of the pericardium, the sac that encloses the heart. Clinicians reference it in imaging and bedside exams when evaluating fluid or inflammation. It is also the target space for certain procedures that drain fluid or allow catheter access.

Pericardium is the sac-like structure that surrounds the heart. It helps protect the heart and allows it to move smoothly as it beats. Clinicians commonly discuss the Pericardium in conditions like inflammation or fluid around the heart. It is also referenced in cardiac imaging and in some heart surgeries.

Epicardium is the thin outer layer of the heart wall. It is also called the visceral layer of the pericardium. Epicardium covers the heart’s surface and helps it move smoothly as it beats. Clinicians commonly reference Epicardium in imaging, heart surgery, and certain rhythm procedures.

Endocardium is the thin inner lining of the heart chambers and heart valves. It is the surface that directly touches circulating blood. Clinicians refer to Endocardium when discussing heart valve disease, clots, infection, and certain rhythm problems. It is commonly evaluated with cardiac imaging such as echocardiography.

Myocardium is the muscular middle layer of the heart wall. It contracts to pump blood to the lungs and the rest of the body. Clinicians use the term when discussing heart function, damage, and healing. It is commonly referenced in imaging, ECG interpretation, and cardiac diagnoses.

A Syncope Clinic is a specialized outpatient service focused on evaluating fainting and near-fainting episodes. It brings structured, step-by-step assessment to symptoms that can have cardiac, vascular, neurologic, or reflex causes. It is commonly used in cardiology and electrophysiology practices, often in collaboration with emergency and primary care. Its goal is to clarify the cause of syncope and identify who may need closer monitoring or targeted testing.

A Pulmonary Hypertension Clinic is a specialized clinic focused on diagnosing and treating pulmonary hypertension (PH), a condition involving high blood pressure in the blood vessels of the lungs. It is commonly based in cardiology, pulmonology, or multidisciplinary heart–lung programs. People are usually referred when symptoms or tests suggest elevated pressure on the right side of the heart or within the pulmonary arteries.

Cardio-Oncology is a medical specialty focused on heart and blood vessel care in people with cancer. It helps prevent, detect, and manage cardiovascular problems related to cancer therapies and the cancer itself. It is commonly used in oncology clinics, cardiology clinics, and hospital settings where cancer treatment is delivered. It brings cardiology and oncology teams together to coordinate care.

Geriatric Cardiology is the part of cardiovascular medicine focused on heart and blood vessel care in older adults. It combines cardiology with principles of geriatrics, such as frailty, function, cognition, and medication safety. It is commonly used in outpatient clinics, hospital consultations, and pre-procedure planning for seniors. The goal is clear, individualized cardiovascular assessment and treatment planning that fits an older person’s overall health.

Sports Cardiology is a focused area of cardiovascular care for people who exercise regularly or compete in sports. It looks at how training and competition affect the heart and blood vessels. It also evaluates symptoms that happen with exercise, such as chest discomfort, shortness of breath, fainting, or palpitations. It is commonly used in athlete screening, “return-to-play” decisions, and performance-related cardiovascular testing.

Adult Congenital Heart Disease refers to heart and great-vessel conditions that are present from birth and persist into adulthood. It includes people with repaired, partially repaired, or unrepaired congenital (from birth) heart defects. It is commonly used as a clinical diagnosis category and as a specialized area of cardiology care. It helps clinicians describe anatomy, predict risks over time, and plan monitoring and interventions across adult life.

Pediatric Cardiology is the medical specialty focused on heart and blood vessel conditions in fetuses, infants, children, and adolescents. It includes diagnosing symptoms like murmurs, chest pain, palpitations, fainting, and shortness of breath. It also covers congenital (present at birth) heart disease, acquired heart disease, and heart rhythm problems. Pediatric Cardiology is commonly used in outpatient clinics, hospitals, cardiac imaging labs, and intensive care settings.

Cardiovascular Surgery is a medical specialty focused on operations on the heart and blood vessels. It is used to treat structural problems such as blocked arteries, diseased valves, and aortic disorders. It is commonly performed in hospitals with dedicated cardiac operating rooms and intensive care units. It often involves a team that includes cardiothoracic surgeons, anesthesiologists, cardiologists, and critical care clinicians.

Cardiac Surgery is a branch of medicine that treats diseases of the heart and nearby great vessels using operations. It can restore blood flow, repair or replace heart valves, correct structural problems, or support a failing heart. It is commonly used when symptoms, risk, or anatomy suggest that medicines or catheter-based procedures may not be enough. It is planned and performed by cardiothoracic surgeons in collaboration with cardiologists and anesthesia teams.

Cardiothoracic Surgery is the surgical care of diseases of the heart and the organs inside the chest. It most commonly includes heart surgery (cardiac surgery) and chest surgery (general thoracic surgery). It is used when a structural problem cannot be managed well with medicines alone. It is performed in hospitals with specialized operating rooms, intensive care units, and multidisciplinary teams.

Emergency Cardiology is the part of cardiovascular medicine focused on urgent heart and blood vessel problems. It covers time-sensitive evaluation and treatment when symptoms could reflect a dangerous cardiovascular condition. It is commonly used in emergency departments, ambulances, cardiac catheterization labs, and intensive care units. It often involves rapid testing, monitoring, and coordinated team-based care.