| RCC | radiological control center; rape crisis center; ratio of cost to charges; receptor-chemoeffector co... |
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| BFP | biologic false-positive |
| BFPR | biologic false-positive reaction |
| BFPSTS | biologic false-positive serological test for syphilis |
| BFR | biologic false reaction; blood flow rate; bone formation rate; buffered Ringer [solution] |
| FNR | False negative rate |
|---|---|
| FP | False positive |
| FT | False tendons |
| FPR | false positive rate |
| 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) |
| aneurysm, false | An aneurysm in which the entire wall is injured and the blood is contained by the surrounding tissues, with eventual formation of a sac communicating with the artery or heart. (12 Dec 1998) |
| positive, false | A result that is erroneously positive when a situation is normal. An example of a false positive: a particular test designed to detect cancer of the toenail is positive but the person does not have toenail cancer. (12 Dec 1998) |
| negative, false | A result that appears negative but fails to reveal a situation. An example of a false negative: a particular test designed to detect cancer of the toenail is negative but the person has toenail cancer. (12 Dec 1998) |
| false | 1. Uttering falsehood; unveracious; given to deceit; dishnest; as, a false witness. 2. Not faithful or loyal, as to obligations, allegiance, vows, etc.; untrue; treacherous; perfidious; as, a false friend, lover, or subject; false to promises. "I to myself was false, ere thou to me." (Milton) 3. Not according with truth or reality; not true; fitted or likely to deceive or disappoint; as, a false statement. 4. Not genuine or real; assumed or designed to deceive; counterfeit; hypocritical; as, false tears; false modesty; false colours; false jewelry. "False face must hide what the false heart doth know." (Shak) 5. Not well founded; not firm or trustworthy; erroneous; as, a false claim; a false conclusion; a false construction in grammar. "Whose false foundation waves have swept away." (Spenser) 6. Not essential or permanent, as parts of a structure which are temporary or supplemental. 7. Not in tune. False arch, construction works to facilitate the erection of the main work, as scaffolding, bridge centering, etc. Origin: L. Falsus, p.p. Of fallere to deceive; cf. OF. Faus, fals, F. Faux, and AS. Fals fraud. See Fail, Fall. Source: Websters Dictionary (01 Mar 1998) |