| MRD | maximum rate of depolarization; measles-rindenpest-distemper [virus group]; medical records departme... |
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| PImax | maximum inspiratory pressure at residual volume |
| PRBC | packed red blood cells; placental residual blood volume |
| PRBV | placental residual blood volume |
| pTNM | TNM staging of tumors as determined by correlation of clinical, pathologic, and residual findings |
| functional murmur | A cardiac murmur not associated with a significant heart lesion. Synonym: innocent murmur, inorganic murmur. (05 Mar 2000) |
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| functional neurosurgery | Destruction or chronic excitation of a part of the brain to treat disordered behaviour or function. (05 Mar 2000) |
| functional occlusion | Any tooth contacts made within the functional range of the opposing teeth surfaces, occlusion which occurs during function. (05 Mar 2000) |
| functional orthodontic therapy | Utilization of muscle forces to effect changes in jaw position and tooth alignment by removable appliances. Synonym: functional orthodontic therapy. (05 Mar 2000) |
| functional pathology | Pathology pertaining to abnormalities in function of a tissue, organ, or part, with or without associated changes in structure. (05 Mar 2000) |
| functional prepubertal castration syndrome | <syndrome> A syndrome characterised by the absence of testes from the scrotum but in their place mesonephric duct derivatives, pronounced gynaecomastia and eunuchoid habitus, and increased urinary excretion of gonadotrophins. (05 Mar 2000) |
| functional psychosis | An obsolete term once used to denote schizophrenia and other severe mental disorders before modern science discovered a biological component to some aspects of each of the disorders. (05 Mar 2000) |
| functional refractory period | The minimum interval possible between successive responses to stimulation of a tissue. (05 Mar 2000) |
| functional spasm | Professional neurosis, a disorder of a group of muscles used chiefly in one's occupation, marked by the occurrence of spasm, paresis, or incoordination on attempt to repeat the habitual movements; e.g., writer's cramp; probably a focal dystonia. Synonym: craft palsy, functional spasm. (05 Mar 2000) |
| functional sphincter | A section of a tubular structure that acts as if it has a band of circular muscle to constrict it, although no such specialised structure can be found on morphological examination. Synonym: functional sphincter, radiological sphincter. (05 Mar 2000) |
| functional splint | The joining of two or more teeth into a rigid unit by means of fixed restorations that cover all or part of the abutment teeth. (05 Mar 2000) |
| functional stricture | A stricture due to localised spasm of muscular fibres in the wall of the canal. Synonym: functional stricture, temporary stricture. (05 Mar 2000) |
| functional terminal innervation ratio | The number of muscle fibres divided by the number of axons that innervate them. (05 Mar 2000) |
| functional visual loss | An apparent loss of visual acuity or visual field with no substantiating physical signs; often due to a natural concern about visual loss combined with suggestibility and a fear of the worst; best treated with reassurance. (05 Mar 2000) |
| functional vocal fatigue | Difficult or abnormal voice production, the enunciation being too high, too loud, or too hard. Synonym: functional vocal fatigue. Origin: phon-+ G. Astheneia, weakness (05 Mar 2000) |