Glossary

There are 225 entries in this glossary.
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Term Definition
Defibrillator

An electronic device used to establish normal heartbeat.

Dehydration

Dryness resulting from the removal of water.

Dermatologist

A doctor who specializes in the treatment and conditions of the skin.

Diabetes Type 1

Type 1 diabetes, once known as juvenile diabetes or insulin-dependent diabetes, is a chronic condition in which the pancreas produces little or no insulin, a hormone needed to allow sugar (glucose) to enter cells to produce energy

Diabetes Type 2

Type 2 diabetes, once known as adult-onset or noninsulin-dependent diabetes, is a chronic condition that affects the way the body metabolizes sugar (glucose).

Diastole

Relaxation and filling of the heart ventricles.

Diastolic blood pressure

The lowest blood pressure measure in the arteries, which occurs between heartbeats.

Dietitian

A dietitian has extensive training in the role of macronutrients and micronutrients in health and disease.

Digitalis

Digitalis preparations are also known as digoxin and digitoxin. Digitalis increases the force of the heart's contractions, which can be beneficial in heart failure and for irregular heart beats. Digitalis is a positive inotropic agent. Commonly prescribed include: Lanoxin.

Dilated Cardiomyopathy

A disease of the heart muscle that prevents the muscle from producing the normal force of contraction. Therefore the heart cannot pump enough blood to the organs in the body. The heart becomes weaker and the four heart chambers get larger (dilate). These chambers are the atria (upper chambers) and ventricles (lower chambers). The heart muscle may thicken so that it can produce more force to keep blood pumping normally. The heart valves may also be affected as the heart chambers get large, which may worsen the flow of blood. The impaired heart action can affect lungs, liver, and other organs.

Diuretic

Diuretics are also known as water pills. Diuretics cause the body to rid itself of excess fluids and sodium through urination. Helps to relieve the heart's workload. Also decreases the buildup of fluid in the lungs and other parts of the body, such as the ankles and legs. Different diuretics remove fluid at varied rates and through different methods. Commonly prescribed include: Amiloride (Midamor), Bumetanide (Bumex), Chlorotiazide (Diuril), Chlorthidone (Hygroton), Furosemide (Lasix), Hydrochlorothiazide (Esdrix, Hydrodiuril), Indapamide (Lozol) and Spironolactone (Aldactone)

Doppler ultrasound

A procedure that uses sound waves to evaluate heart, blood vessels, and valves.

Dyspnea

Shortness of breath.

Dysrhythmia (or arrythmia)

An abnormal heart rhythm.