ABI is a simple, noninvasive test that compares blood pressure at the ankle with blood pressure at the arm. It is commonly used to check for reduced blood flow to the legs, most often from peripheral artery disease (PAD). ABI is measured in outpatient vascular labs, cardiology clinics, primary care settings, and hospitals. It helps clinicians interpret leg symptoms and estimate vascular risk in a standardized way.

Ankle-Brachial Index is a simple, noninvasive test that compares blood pressure at the ankle with blood pressure at the arm. It helps clinicians estimate how well blood is reaching the legs through the arteries. It is commonly used to screen for and evaluate peripheral artery disease (PAD). It is often performed in cardiology, vascular medicine, primary care, and vascular laboratory settings.

Dermatomal pain is pain that follows a skin-area pattern supplied by a single spinal nerve root. It is often described as “traveling” in a stripe or band down an arm, around the chest, or into a leg. Clinicians use it to connect symptoms on the skin to a likely level in the spine or a specific nerve root. It is commonly discussed in spine care, neurology, pain medicine, and shingles (herpes zoster) evaluations.

An EP Study is a specialized heart test that evaluates the heart’s electrical system. It helps clinicians understand why abnormal heart rhythms (arrhythmias) happen. It is commonly performed in a hospital electrophysiology laboratory using thin catheters. It may be purely diagnostic or combined with catheter ablation to treat certain rhythms.

An Electrophysiology Study is a catheter-based test that evaluates the heart’s electrical system. It records electrical signals from inside the heart and can intentionally trigger abnormal rhythms in a controlled setting. It is commonly performed in a hospital electrophysiology (EP) lab by a cardiac electrophysiologist. It may be used for diagnosis and, in some cases, treatment during the same session.

Lumbosciatica is a term used for low back pain that is accompanied by pain radiating down the leg along a sciatic-nerve pattern. It is commonly used in clinical notes and referrals to describe symptoms suggesting irritation of a lumbar nerve root. People may also use it loosely to mean “back pain with sciatica,” even when the exact cause is not yet confirmed.

A Tilt Table Test is a diagnostic test that evaluates how the heart rate and blood pressure respond to changes in body position. It is most commonly used to investigate fainting (syncope), near-fainting, or unexplained dizziness. The test is performed in a monitored clinical setting, often in cardiology, electrophysiology, or autonomic testing labs. It aims to reproduce symptoms safely while clinicians track cardiovascular responses.

CPET stands for **cardiopulmonary exercise testing**. It is an exercise test that measures how the **heart, lungs, blood, and muscles** work together during physical activity. CPET is commonly used in **cardiology, pulmonary medicine, and sports/rehabilitation settings**. It helps clinicians understand **why** a person gets short of breath, fatigued, or limited with exertion.

Brachialgia means pain felt in the arm. In everyday terms, it describes arm pain that may start in the neck or shoulder region and travel down the arm. It is commonly used in spine, neurology, and pain medicine notes to describe a symptom pattern. It is not a single disease by itself, but a label that points clinicians toward possible nerve-related causes.

A Cardiopulmonary Exercise Test is an exercise test that measures how the heart, lungs, blood vessels, and muscles work together. It combines exercise with breathing measurements and heart monitoring. It is commonly performed in cardiology, pulmonary medicine, and sports/rehabilitation settings. It helps explain symptoms like shortness of breath or fatigue that are hard to interpret from resting tests alone.