| RCC | radiological control center; rape crisis center; ratio of cost to charges; receptor-chemoeffector co... |
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| AD | accident dispensary; acetate dialysis; active disease; acute dermatomyositis; addict, addiction; ade... |
| AH | abdominal hysterectomy; absorptive hypercalciuria; accidental hypothermia; acetohexamide; acid hydro... |
| AN | acanthosis nigricans; acne neonatorum; acoustic neuroma; adult, normal; ala nasi; amyl nitrate; aneu... |
| ANS | acanthion; American Nutrition Society; 8-anilino-1-naphthalene-sulfonic acid; anterior nasal spine; ... |
| salt-depletion crisis | Severe illness resulting from loss of sodium chloride, usually in urine (i.e., salt-losing nephritis), in sweat following severe exercise in hot weather, or in intestinal secretions, as in cholera. Can occur as result of Addison's disease or Addisonian crisis; characterised by hypovolaemia, hypotension. (05 Mar 2000) |
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| sickle cell crisis | <haematology> Disease common in races of people from areas in which malaria is endemic. The cause is a point mutation in the allele that codes for the beta chain of haemoglobin with a substitution of (valine for glutamic acid at position 6. The defective haemoglobin (HbS) crystallizes readily at low oxygen tension. In consequence, erythrocytes from homozygotes change from the normal discoid shape to a sickled shape when the oxygen tension is low and these sickled cells become trapped in capillaries or damaged in transit, leading to severe anaemia. In heterozygotes, the disadvantages of the abnormal haemoglobin are apparently outweighed by increased resistance to Plasmodium falciparum malaria, probably because parasitised cells tend to sickle and are then removed from circulation. Symptoms include joint pain, acute abdominal pain, and ulcerations of the lower extremities. Origin: Gr. Haima = blood (18 Nov 1997) |
| Dietl's crisis | Intermittent pain, sometimes with nausea and emesis, caused by intermittent proximal obstruction of ureter. Originally believed due to a mobile kidney that caused ureter to kink with positional changes. Synonym: incarceration symptom. (05 Mar 2000) |
| identity crisis | <psychology> Chaotic concept of self wherein one's role in life appears to be an insoluble dilemma often expressed by isolation, withdrawal, rebellion and extremism. (12 Dec 1998) |
| ocular crisis | Sudden and severe pain in the eyes. (05 Mar 2000) |
| tabetic crisis | A sudden paroxysmal intensification of symptoms in the course of a disease. Origin: L., Gr. Krisis (18 Nov 1997) |
| therapeutic crisis | A turning point leading to positive or negative change in psychiatric treatment. (05 Mar 2000) |
| thyroid crisis | Sudden and dangerous increase of the symptoms of thyrotoxicosis. (12 Dec 1998) |
| thyrotoxic crisis | Thyroid crisis, the exacerbation of symptoms that occurs in severe thyrotoxicosis; can follow shock or injury or thyroidectomy; marked by rapid pulse (140 to 170 per minute), nausea, diarrhoea, fever, loss of weight, extreme nervousness, and a sudden rise in the metabolic rate; coma and death may occur; occasionally the entire clinical picture is that of profound prostration, weakness, and collapse, without the phase of muscular overactivity and tachycardia. Synonym: thyroid storm. (05 Mar 2000) |
| febrile crisis | The stage in a febrile disease when spontaneous defervescence occurs. (05 Mar 2000) |
| laryngeal crisis | An attack of paralysis of the abductor, or spasm of the adductor, muscles of the larynx with dyspnea and noisy respiration, occurring in tabetic neurosyphilis. (05 Mar 2000) |
| autonomic | <physiology> Self controlling, functionally independent. (02 Jan 1998) |
| autonomic agents | Agents affecting the function of, or mimicking the actions of, the autonomic nervous system and thereby having an effect on such processes as respiration, circulation, digestion, body temperature regulation, certain endocrine gland secretions, etc. (12 Dec 1998) |
| autonomic denervation | The removal or interruption of some part of the autonomic nervous system for therapeutic or research purposes. (12 Dec 1998) |
| autonomic disorder | Disorganization of autonomic processes. (05 Mar 2000) |