Definitions C Flashcards
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Question
calcium channel blocker agents
Medications that cause the heart and blood vessels to relax by decreasing the movement of calcium into the cells of these structures. This relaxation reduces the workload of the heart by increasing the supply of blood and oxygen. Some calcium channel blocking agents are used to treat hypertension or to relieve and control angina.
calciuria
The presence of calcium in the urine. Abnormally high levels can be diagnostic for hyperparathyroidism. Lower-than-normal levels can indicate osteomalacia.
callus
A bulging deposit that forms around the area of the break in a bone; also a thickening of the skin that is caused by repeated rubbing.
cancer
A class of diseases characterized by the uncontrolled division of cells and the ability of these cells to invade other tissues, either by invasion though direct growth into adjacent tissue or by spreading into distant sites by metastasizing.
candidiasis
A yeast infection.
capillary hemangioma
A soft, raised, pink, or red vascular birthmark. A hemangioma is a benign tissue mass made up of newly formed small blood vessels that in birthmarks are visible through the skin.
capillary puncture
Technique used to obtain a small amount of blood for a blood test. Named for where it is performed, a capillary puncture is usually known as a finger, heel, or an earlobe stick.
capsule endoscopy
The use of a tiny video camera in a capsule that the patient swallows. For approximately eight hours, as it passes through the small intestine, this camera transmits images of the small intestine. The images are detectable by sensor devices attached to the patient?s abdomen and transmitted to a data recorder worn on the patient?s belt.
carbuncle
A cluster of connected furuncles (boils).
carcinoma
A malignant tumor that occurs in epithelial tissue. Epithelial tissue forms the protective covering for all of the internal and external surfaces of the body. Carcinomas tend to infiltrate and produce metastases new cancer sites) that can affect any organ or part of the body.
carcinoma in situ
A malignant tumor in its original position that has not yet disturbed or invaded the surrounding tissues.
cardiac arrest
An event in which the heart abruptly stops beating or develops an arrhythmia that prevents it from pumping blood effectively.
cardiac catheterization
A diagnostic procedure in which a catheter is passed into a vein or artery and guided into the heart. When the catheter is in place, a contrast medium is introduced to produce an angiogram to determine how well the heart is working. This procedure is also used during treatment.
cardiocentesis
The puncture of a chamber of the heart for diagnosis or therapy. Also known as cardiopuncture.
cardiomegaly
Abnormal enlargement of the heart, that is frequently associated with heart failure as the heart enlarges in an effort to compensate for its decreased pumping ability.
cardiomyopathy
All diseases of the heart muscles.
cardioplegia
Paralysis of the heart muscle. Although this can be caused by a direct blow or trauma, it is more commonly induced intentionally to perform complicated surgery.
cardiopulmonary resuscitation
An emergency procedure for life support consisting of artificial respiration and manual external cardiac compression. Commonly known as CPR.
carditis
An inflammation of the heart.
carotdid endarterectomy
Surgical removal of the lining of a portion of a clogged carotid artery leading to the brain. This procedure is performed to reduce the risk of a stroke caused by a disruption of the blood flow to the brain.
carotid ultrasonography
An ultrasound study of the carotid artery that is performed to predict or diagnose an ischemic attack.
carpal tunnel release
The surgical enlargement of the carpal tunnel or cutting of the carpal ligament to relieve pressure on nerves and tendons.
carpal tunnel syndrome
Swelling that creates pressure on the median nerve as it passes through the carpal tunnel.