A Stress Test is a diagnostic test that evaluates how the heart performs under increased workload. It is used to detect exercise- or stress-induced changes in myocardial (heart muscle) blood flow, rhythm, or function. In cardiology, it is most commonly applied to assess suspected coronary artery disease (CAD) and exercise tolerance. It is also used in risk stratification and to guide further testing when symptoms occur with exertion.

An Event Monitor is an ambulatory electrocardiogram (ECG) device used to record heart rhythm during symptoms or suspected intermittent arrhythmias. It is a diagnostic test in clinical cardiology focused on the cardiac conduction system and rhythm disorders. It is commonly used in outpatient evaluation of palpitations, dizziness, and unexplained syncope when a standard 12-lead ECG is unrevealing.

A Holter Monitor is a portable device that records the heart’s electrical activity continuously over time. It is a diagnostic test in cardiology focused on rhythm and conduction assessment. It is commonly used to evaluate intermittent symptoms such as palpitations, dizziness, or syncope. It is typically worn during usual daily activities to capture real-world electrocardiogram (ECG) data.

An EKG is a test that records the heart’s electrical activity over time. It is a diagnostic test used in cardiology and acute care to evaluate rhythm and conduction. It is commonly performed in clinics, emergency departments, inpatient wards, and preoperative settings. It helps translate cardiac physiology and pathology into a standardized tracing for interpretation.

ECG stands for electrocardiogram, a test that records the heart’s electrical activity. It is a diagnostic tool used in cardiology, emergency medicine, anesthesia, and critical care. It helps assess heart rhythm, conduction, and patterns that can suggest ischemia or chamber strain. It is commonly used in clinics, ambulances, emergency departments, inpatient wards, and operating rooms.

An Electrocardiogram is a recording of the heart’s electrical activity measured at the body surface. It is a diagnostic test used in cardiology and acute care to assess rhythm, rate, and electrical conduction. It supports evaluation of symptoms such as chest pain, palpitations, syncope, and dyspnea. It is commonly used in emergency departments, clinics, inpatient wards, and perioperative settings.

Cardiac Biomarkers are measurable substances in blood (and sometimes other body fluids) that reflect heart muscle injury, myocardial stress, or related cardiovascular pathology. They are part of diagnostic testing in cardiology and emergency medicine, not an anatomic structure or a treatment. They are most commonly used when evaluating acute chest pain, suspected acute coronary syndrome (ACS), and heart failure (HF). Results are interpreted alongside symptoms, physical exam, electrocardiogram (ECG), and cardiac imaging when needed.

CRP stands for C-reactive protein. CRP is a blood biomarker that reflects systemic inflammation. It is used in diagnostic testing across acute care and outpatient medicine. In cardiology, CRP is most often discussed in atherosclerosis, infection, and postoperative monitoring.

D Dimer is a blood test marker that reflects breakdown of cross-linked fibrin. It is used in clinical medicine as a diagnostic test rather than a treatment. It is most commonly applied when evaluating suspected venous thromboembolism and related acute cardiopulmonary presentations. It is also encountered in systemic illnesses that activate coagulation and fibrinolysis.

NT proBNP is a blood biomarker that reflects cardiac wall stress, especially from the ventricles. It is measured as a diagnostic test in patients with suspected or known heart failure. It is commonly used in emergency care for acute dyspnea and in longitudinal cardiology follow-up. Its results must be interpreted alongside clinical assessment, ECG, and cardiac imaging such as echocardiography.