What does TBI mean in MEDICAL

A Toe-Brachial Index is a measurement used to assess and diagnose peripheral arterial disease in the lower extremities. It measures the ratio of blood pressure at the ankle compared to that at the brachial artery, which can indicate blockages or reduced blood flow in the limb.

The TBI is measured by taking readings of systolic pressures at both an artery near the elbow (brachial) and an artery near the ankle (dorsalis pedis). These readings are then compared to generate a ratio that reflects how much pressure is lost due to blockage as it travels down through the leg.

Values between 0.9 and 1.0 on a TBI test are considered normal, indicating adequate blood flow from the heart to the legs. Values lower than 0.9 indicate reduced blood flow due to either blockage or other factors such as low cardiac output or lack of exercise.

Yes, TBI results can be used to diagnose peripheral artery disease (PAD). Low TBI ratios may suggest plaque buildup in your arteries, which restricts blood flow from your heart and causes PAD symptoms such as pain, cramping, weakness or numbness in one or both legs.

Based on your TBI results, your doctor may recommend lifestyle changes such as quitting smoking, increasing physical activity and following a healthy diet plan; medications such as anticoagulants or statins; vascular procedures; angioplasty; stent placement; bypass surgery; or amputation if necessary.