| ¿µ¹® | rebound phenomenon | ÇÑ±Û | ¹Ý¹ßÇö»ó, ¹Ýµ¿Çö»ó |
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| CREST Syndrome | 1. Calcinosis cutis 2. Raynaud's phenomenon 3. Esophageal ... |
|---|---|
| CRST Syndrome | 1. Calcinosis 2. Raynaud's Phenomenon 3. Sclerodactyly ... |
| ECG | Electro-Cardio-Graphy(-Gram); ½ÉÀüµµ = EKG 1. Conducting System Structu... |
| VF | 1) Ventricular Fibrillation ? Tx of Ventricular Fibrillation ... |
| B-G | Bordet-Gengou [agar, bacillus, phenomenon] |
| PRP | Primary Raynaud's Phenomenon |
|---|---|
| RP | Raynaud Phenomenon |
| brake | 1. <botany> A fern of the genus Pteris, especially. The P. Aquilina, common in almost all countries. It has solitary stems dividing into three principal branches. Less properly: Any fern. 2. A thicket; a place overgrown with shrubs and brambles, with undergrowth and ferns, or with canes. "Rounds rising hillocks, brakes obscure and rough, To shelter thee from tempest and from rain." (Shak) "He stayed not for brake, and he stopped not for stone." (Sir W. Scott) Cane brake, a thicket of canes. See Canebrake. Origin: OE. Brake fern; cf. AS. Bracce fern, LG. Brake willow bush, Da. Bregne fern, G. Brach fallow; prob. Orig. The growth on rough, broken ground, fr. The root of E. Break. See Break, cf. Bracken, and 2d Brake. 1. An instrument or machine to break or bruise the woody part of flax or hemp so that it may be separated from the fibre. 2. An extended handle by means of which a number of men can unite in working a pump, as in a fire engine. 3. A baker's kneading though. 4. A sharp bit or snaffle. "Pampered jades . . . Which need nor break nor bit." (Gascoigne) 5. A frame for confining a refractory horse while the smith is shoeing him; also, an inclosure to restrain cattle, horses, etc. "A horse . . . Which Philip had bought . . . And because of his fierceness kept him within a brake of iron bars." (J. Brende) 6. That part of a carriage, as of a movable battery, or engine, which enables it to turn. 7. An ancient engine of war analogous to the crossbow and ballista. 8. <agriculture> A large, heavy harrow for breaking clods after plowing; a drag. 9. A piece of mechanism for retarding or stopping motion by friction, as of a carriage or railway car, by the pressure of rubbers against the wheels, or of clogs or ratchets against the track or roadway, or of a pivoted lever against a wheel or drum in a machine. 10. <engineering> An apparatus for testing the power of a steam engine, or other motor, by weighing the amount of friction that the motor will overcome; a friction brake. 11. A cart or carriage without a body, used in breaking in horses. 12. An ancient instrument of torture. Air brake. See Air brake, in the Vocabulary. Brake beam or Brake bar, the beam that connects the brake blocks of opposite wheels. Brake block. The part of a brake holding the brake shoe. A brake shoe. Brake shoe or Brake rubber, the part of a brake against which the wheel rubs. Brake wheel, a wheel on the platform or top of a car by which brakes are operated. Continuous brake . See Continuous. Origin: OE. Brake; cf. LG. Brake an instrument for breaking flax, G. Breche, fr. The root of E. Break. See Break, and cf. Breach. Source: Websters Dictionary (01 Mar 1998) |
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| adhesion phenomenon | A phenomenon manifested by the adherence of antigen-antibody-complement complex to "indicator cells" (microorganisms, platelets, leukocytes, or erythrocytes), the reaction being sensitive and specific for the antigen and antibody in the complex. Synonym: erythrocyte adherence phenomenon, immune adherence phenomenon, red cell adherence phenomenon. (05 Mar 2000) |
| AFORMED phenomenon | As induced pulsus alternans progresses, a state in which alternating heart depolarisations fail to eject any blood, thus allowing longer diastolic filling; the subsequent beat is then able to produce a significant ejection; at high rates the cardiac minute volume and blood pressure may appear normal. Origin: Alternating, failure of response, mechanical, to electrical depolarisation (05 Mar 2000) |
| all-or-nothing phenomenon | <physiology> Refers to the phenomenon where the strength of a nerve impulse is not dependent on the strength of the stimulus. Instead, there is a threshold level of stimulus strength that must be reached before the nerve will fire an impulse (at full capacity). Below the threshold, the nerve will not fire at all. <cardiology> It also refers to the same phenomenon observed in the heart muscle, which will either contract fully or not at all. <psychology> In studies of behaviour, it refers to the same phenomenon where a behavioural stimulus will either produce a complete response or no response at all. Also called all-or-nothing principle, all-or-none law, all-or-none responsiveness, etc. (15 Nov 1997) |
| Anrep phenomenon | Homeometric autoregulation of the heart whereby cardiac performance improves as the afterload (aortic pressure) is increased. (05 Mar 2000) |
| aqueous influx phenomenon | The filling of the aqueous vein, which normally carries blood and aqueous, with aqueous, when the junction of the aqueous vein and the recipient vein is partially occluded. Synonym: Ascher's aqueous influx phenomenon. (05 Mar 2000) |
| Arias-Stella phenomenon | Focal, unusual, decidual changes in endometrial epithelium, consisting of intraluminal budding, and nuclear enlargement and hyperchromatism with cytoplasmic swelling and vacuolation; may be associated with ectopic or uterine pregnancy. Synonym: Arias-Stella effect, Arias-Stella reaction. (05 Mar 2000) |
| arm phenomenon | In tetany, spasm both of the extensor muscles of the knee and of the calf muscles when the extended leg is flexed at the hip. Synonym: leg phenomenon, Pool-Schlesinger sign, Schlesinger's sign. In tetany, contraction of the arm muscles following the stretching of the brachial plexus by elevation of the arm above the head with the forearm extended, resembles the contraction resulting from stimulation of the ulnar nerve. Synonym: arm phenomenon. (05 Mar 2000) |
| Arthus phenomenon | A form of immediate hypersensitivity resulting in erythema, oedema, haemorrhage, and necrosis observed in rabbits after injection of antigen to which the animal has already been sensitised and has specific IgG antibodies. The reaction is caused by the inflammation that results from the deposition of antigen-antibody complexes in tissue spaces and in blood vessel walls that activate complement, most of the damage seemingly being due to the polymorphonuclear leukocytes that phagocytise the deposits and release lysosomal enzymes. The phenomenon, described by Arthus, was in rabbits, but similar reactions (Arthus-type reactions) are observed in guinea pigs, rats, and dogs, as well as in humans. See: Arthus reaction. Synonym: Arthus reaction. (05 Mar 2000) |
| Ascher's aqueous influx phenomenon | The filling of the aqueous vein, which normally carries blood and aqueous, with aqueous, when the junction of the aqueous vein and the recipient vein is partially occluded. Synonym: Ascher's aqueous influx phenomenon. (05 Mar 2000) |
| Aschner's phenomenon | A decrease in pulse rate associated with traction on extraocular muscles or compression of the eyeball; especially sensitive in children; may produce asystolic cardiac arrest. Synonym: Aschner's phenomenon, Aschner's reflex, Aschner-Dagnini reflex, oculovagal reflex. (05 Mar 2000) |
| Ashman's phenomenon | Aberrant ventricular conduction of a beat ending a short cycle that is preceded by a longer cycle most commonly during atrial fibrillation. (05 Mar 2000) |
| Aubert's phenomenon | A phenomenon in which a bright perpendicular line appears to incline to one side when the observer turns the head to the opposite side in a dark room. (05 Mar 2000) |
| Austin Flint phenomenon | The murmur of relative mitral stenosis during significant aortic regurgitation owing to narrowing of the mitral orifice by pressure of the aortic regurgitant flow on the anterior mitral leaflet. Synonym: Austin Flint murmur. (05 Mar 2000) |
| autoscopic phenomenon | The encountering of an image of oneself, the image being an illusion, a hallucination, or a vivid fantasy. (05 Mar 2000) |
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