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Ecchymotic
Ecchymotic Characterized by ecchymosis.
RELATED TERMS--------------------------------------
Ecchymosis
A purplish patch caused by extravasation of blood into the tissues differing from petechiae only in size.
SIMILAR TERMS--------------------------------------
Ecchymosis
A purplish patch caused by extravasation of blood into the tissues differing from petechiae only in size.
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EBCT (electron beam computerized tomography)
A new (and controversial) noninvasive test for the detection of coronary artery disease (CAD). EBCT, or Ultrafast CT (as the technique will be termed here) is designed to measure calcium deposits in the coronary arteries. In patients with CAD, the plaques which make up the blockages contain significant amounts of calcium, which can be detected with Ultrafast CT. This test will identify calcium in blockages as mild as 10-20%, which would not be detected by standard physiologic stress testing.
EBM
Evidence-based medicine.
Ebola virus
A notoriously deadly virus that causes fearsome symptoms, the most prominent being high fever and massive internal bleeding. Ebola virus kills as many as 90% of the people it infects. It is one of the viruses that is capable of causing hemorrhagic (bloody) fever.
EBV
Epstein-Barr virus, best known as the cause of infectious mononucleosis ("mono"). Infection with EBV is characterized by fatigue and general malaise. Infection with EBV is fairly common and is usually a transient and minor thing. However, in some individuals EBV can trigger chronic illness, including immune and lymphoproliferative syndromes. It is a particular danger to people with compromised immune systems, such as from AIDS.
EC
Abbreviation for: 1. Endocannabinoid. 2. Extracranial.3. Embryonal carcinoma.
Ecchymotic
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 pattern of disease. E. granulosus is common in areas where livestock is raised in association with dogs -- in Australia and New Zealand, Argentina and Chile, Africa, E. Europe, the Middle East, and the Mediterranean region, especially Lebanon and Greece -- and causes unilocular cysts. E. multilocularis is found in Alpine, sub-Arctic, or Arctic regions -- including Canada, the United States, and central and northern Europe and Asia -- and causes multilocular lung disease known as alveolar hydatid disease (AHD). E. vogeli is found only in Central and South America and causes polycystic hydatid disease.
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 different pattern of disease. E. granulosus is common in areas where livestock is raised in association with dogs -- in Australia and New Zealand, Argentina and Chile, Africa, E. Europe, the Middle East, and the Mediterranean region, especially Lebanon and Greece -- and causes unilocular cysts. E. multilocularis is found in Alpine, sub-Arctic, or Arctic regions -- including Canada, the United States, and central and northern Europe and Asia -- and causes multilocular lung disease known as alveolar hydatid disease (AHD).
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 (the major pumping chamber of the heart) exhibit enhanced contractions of the heart muscle during peak exercise. Conversely, in the setting of coronary artery disease (CAD), if a segment of the left ventricle does not receive optimal blood flow during exercise, that segment will demonstrate reduced contractions of heart muscle relative to the rest of the heart on the exercise echocardiogram.
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 heart surgery. TEE has unusually accurate imaging capabilities that permit the identification of previously unidentified anatomic features and postoperative surgical results that may necessitate a change in surgical plan or surgical revision before the child leaves the operating suite.
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 diseases including rashes, diarrhea, respiratory infections (the common cold, sore throat, bronchitis, and bronchiolitis), myositis (muscle inflammation), meningitis, encephalitis, and pericarditis (inflammation of the membrane around the heart).
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