Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «E»:
Ecchymosis: The skin
discoloration caused by the escape of blood into the tissues from ruptured blood vessels. Ecchymoses can similarly occur in mucous membranes as, for example, in the mouth....
Ecchymotic: Characterized by ecchymosis. ...
ECG: Abbreviation for electrocardiogram or EKG. The K is from "kardio" (in German)....
Echinacea: An herb that has been claimed to boost the body's immune system and help fight off infections. Echinacea has been widely used to treat the symptoms of upper respiratory tract infections (URIs), including colds and the flu. The herb is derived from the purple coneflower, Echinacea purpurea...
Echinococcosis: Parasitic disease caused by the larval stage of the tapeworm Echinococcus. There are three forms of Echinococcus that affect humans -- E. (Echinococcus) granulosus, E. multilocularis, and E. vogeli -- and each has a different geographic distribution and tends to cause a different pat...
Echinococcus: A tiny parasitic tapeworm. The larval stage of this tapeworm can cause human disease.
There are three forms of Echinococcus that affect humans -- E. (Echinococcus) granulosus, E. multilocularis, and E. vogeli -- and each has a different geographic distribution and tends to cause a di...
Echocardiography: Echocardiography is a diagnostic
test which uses
ultrasound waves to make images of the heart chambers, valves and
It can measure cardiac output and is a sensitive test for
inflammation around the heart
(pericarditis). It can also be used to detect abnor...
Echocardiography, stress: A supplement to the routine exercise cardiac stress test. During stress echocardiography, the sound waves of ultrasound are
used to produce images of the heart at rest and at the peak of exercise.
In a heart with normal blood supply, all segments of the
left ventricle (...
Echocardiography, transesophageal: A diagnostic test which is done through the esophagus and which employs ultrasound waves to make images of the heart chambers, valves and surrounding structures.
Transesophageal echocardiography (TEE) may be used, for example, in the treatment of children having he...
Echolalia: The involuntary parrotlike repetition (echoing) of a word or phrase just spoken by another person. Echolalia is a feature of schizophrenia (especially the catatonic form), Tourette syndrome, and some other disorders. From echo + the Greek lalia, a form of speech....
Echopraxia: The involuntary imitation of the movements of another person. Echopraxia is a feature of schizophrenia (especially the catatonic form), Tourette syndrome, and some other neurologic diseases. From echo + the Greek praxia meaning action....
Echovirus: A group of viruses found in the
gastrointestinal tract. The "echo" part of the name stands for
enteric cytopathic human orphan viruses. "Orphan" implied that they
were viruses not associated with any disease. However, it is now known that echoviruses can cause a number of different dis...
Eclampsia: Convulsions (seizures) occurring with pregnancy-associated high blood pressure and having no other cause....
Eclosion: The emergence of an adult insect from its pupal case, or the hatching of an insect larva from an egg. From the French eclosion, from eclore, to open....
ECMO: Extracorporeal membrane oxygenation....