Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «C»:
Carbolic acid: A synonym of phenol. In dilute solution, an antimicrobial agent. First used to clean wounds and dress them by the surgeon Joseph Lister who reported in 1867 that his wards at the Glasgow Royal Infirmary had remained free of sepsis, then a great scourge, for 9 months....
Carbon dioxide: A gas which is the byproduct of cellular metabolism and which collects in the tissues, is cleared from the tissues by the blood within the veins, is carried by the hemoglobin in the red blood cells, and removed from the body via the lungs in the exhaled air. Abbreviated CO2....
Carbon dioxide content
Carbon dioxide content: A measure of the bicarbonate level in the blood. The normal carbon dioxide content may vary somewhat from one laboratory to another. For example, it may be 20 to 29 milliequivalents per liter (mEq/L) of blood, 22 to 34 mEq/L, etc.
Higher than normal carbon dioxide levels ma...
Carbon monoxide hemoglobin
Carbon monoxide hemoglobin: See: Carboxyhemoglobin....
Carbon monoxide on houseboats
Carbon monoxide on houseboats: See: Houseboat carbon monoxide poisoning....
Carbon monoxide poisoning
Carbon monoxide poisoning: Poisoning with carbon monoxide, a tasteless odorless gas that is a byproduct of combustion. Carbon monoxide acts as a poison by competing with oxygen for binding sites on hemoglobin, the molecule in red blood cells that carries oxygen from the lungs to the more remote tiss...
Carbonmonoxyhemoglobin: See: Carboxyhemoglobin....
Carboxyhemoglobin: Hemoglobin that has carbon monoxide instead of the normal oxygen bound to it. Carbon monoxide has a much great affinity than oxygen for hemoglobin. Carboxyhemoglobin is formed in carbon monoxide poisoning. The source of the carbon monoxide may be exhaust (such as from a car, truck...
Carboxyhemoglobinemia: The presence of carboxyhemoglobin in the blood. Carboxyhemoglobin, hemoglobin that has carbon monoxide bound to it, is formed in carbon monoxide poisoning, as from exhaust (such as from a car, truck, boat or generator), smoke from a fire, or tobacco smoke.
Carbuncles: A skin abscess, a collection of pus that
forms inside the body. Antibiotics are often not very helpful in treating abscesses. The
main treatments include hot packs and draining ("lancing") the abscess, but only
when it is soft and ready to drain. If you have a fever or long-ter...
Carcinoembryonic antigen: Carcinoembryonic antigen (CEA) is a protein found in many types of cells but associated with tumors and the developing fetus.
CEA is tested in blood. The normal range is...
Carcinogen: A substance or agent that causes cancer. Related terms include the adjective "carcinogenic" and the nouns "carcinogenesis" and "carcinogenicity." One of the best-known carcinogens is ionizing radiation.
The International Agency for Research on Cancer has classified some 60 substances an...
Carcinogenic: Causing cancer or contributing to the causation of cancer. Pertaining to a carcinogen....
Carcinoid syndrome: A syndrome due to carcinoid tumor which secretes large amounts of the hormone serotonin. The syndrome is directly due to the serotonin. Features include flushing and blushing, swelling of the face (especially around the eyes), flat angiomas (little collections of dilated blood ve...
Carcinoid tumor: A tumor which secretes large amounts of the hormone serotonin. Carcinoid tumor is also called an argentaffinoma. The tumor usually arises in the gastrointestinal tract, anywhere between the stomach and the rectum (the favorite spot is in the appendix) and from there may metastasize ...