| AERP | antegrade effective refractory period; atrial effective refractory period |
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| RA | radioactive; ragocyte; ragweed antigen; rapidly adapting [receptors]; reactive arthritis; reciprocal... |
| AML | Acute Myelogenous Leukemia Morphologic Classification(FAB분류) &n... |
| EA | 1) Esophageal Atresia Types 1. Esophageal Atresia with Dis... |
| NYHA | New York Heart Association Heart Disease에 대한 Functional Classification &nbs... |
| refractory period of electronic pacemaker | The time required to restore full sensitivity after detecting cardiac activity or delivering a pacing impulse. (05 Mar 2000) |
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| refractory period, psychological | A delayed response interval occurring when two stimuli are presented in close succession. (12 Dec 1998) |
| refractory rickets | Rickets that does not respond to treatment with usual doses of vitamin D and adequate dietary calcium and phosphorus. Most often due to inherited renal tubular disorder e.g., Fanconi syndrome. Renal rickets, a form of rickets occurring in children in association with and apparently caused by renal disease with hyperphosphatemia. Synonym: pseudorickets, renal fibrocystic osteosis, renal infantilism, renal osteitis fibrosa. (05 Mar 2000) |
| refractory state | Subnormal excitability immediately following a response to previous excitation; the state is divided into absolute and relative phases. (05 Mar 2000) |
| relative refractory period | The period between the effective refractory period and the end of the refractory period; fibres then respond only to high intensity stimuli and the impulses conduct more slowly than normally. (05 Mar 2000) |
| effective refractory period | The period during which impulses may appear but are too weak to be conducted; the longest interval between adequate stimuli, falling just short of the time necessary to allow a propagated response to be evoked in a tissue by the second stimulus; it differs from the functional refractory period in that it is a measure of stimulus interval rather than response interval of time. (05 Mar 2000) |
| total refractory period | The absolute refractory period plus the relative refractory period. (05 Mar 2000) |
| functional refractory period | The minimum interval possible between successive responses to stimulation of a tissue. (05 Mar 2000) |
| achlorhydric anaemia | A form of chronic hypochromic microcytic anaemia associated with achlorhydria or achylia gastrica; observed most frequently in women in the third to fifth decades. Synonym: Faber's anaemia, Faber's syndrome. (05 Mar 2000) |
| achrestic anaemia | A form of chronic progressive macrocytic anaemia that can be fatal in which the changes in bone marrow and circulating blood closely resemble those of pernicious anaemia, but in which there is only transient or no response to therapy with vitamin B12; glossitis, gastrointestinal disturbances, central nervous system disease, and pyrexia are not observed, and there is only little bleeding or haemolysis. Origin: G. A-priv. + chresis, a using (05 Mar 2000) |
| acquired haemolytic anaemia | Nonhereditary acute or chronic anaemia associated with or caused by extracorpuscular factors, e.g., certain infectious agents, chemicals (including autoantibodies or therapeutic agents), burns, toxic materials from higher plant and animal forms (including snake venoms). (05 Mar 2000) |
| addisonian anaemia | <haematology> A form of anaemia (low red blood cell counts) that results when the bone marrow fails to produce adequate numbers of red blood cells due to a deficiency in vitamin B12. Intrinsic factor, necessary for normal B12 absorption, may be the underlying cause for B12 deficiency if is not produced in the gastric glands (in the stomach). Origin: Gr. Haima = blood (27 Sep 1997) |
| Addison's anaemia | <haematology> A form of anaemia (low red blood cell counts) that results when the bone marrow fails to produce adequate numbers of red blood cells due to a deficiency in vitamin B12. Intrinsic factor, necessary for normal B12 absorption, may be the underlying cause for B12 deficiency if is not produced in the gastric glands (in the stomach). Origin: Gr. Haima = blood (27 Sep 1997) |
| anaemia | <haematology> Too few red blood cells in the bloodstream, resulting in insufficient oxygen to tissues and organs. Origin: Gr. Haima = blood (16 Dec 1997) |
| anaemia, aplastic | A form of anaemia in which the bone marrow fails to produce adequate numbers of peripheral blood elements. (12 Dec 1998) |