| bilateral hydronephrosis | <nephrology, urology> Refers to the bilateral enlargement of the renal pelvis and calyces of the kidneys. This is not a disease itself but a finding associated with a variety of disease states which interfere with the drainage of urine from the kidneys to the ureters and into the bladder. Examples include acute and chronic bilateral obstructive uropathy, vesicoureteric reflux, ureteropelvic junction obstruction, neurogenic bladder, bladder outlet obstruction and prune belly syndrome. (27 Sep 1997) |
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| bilateral large kidneys | <radiology> Autosomal dominant (adult) polycystic disease, lymphoma Cf: other urographic patterns (12 Dec 1998) |
| bilateral left-sidedness | A syndrome in which normally unpaired organs develop more symmetrically in mirror image; two spleens, one on each side, are usually present, and cardiovascular anomalies are common. Synonym: polysplenia syndrome. (05 Mar 2000) |
| bilateral mastectomy | <procedure, surgery> The surgical removal of both breasts. (09 Oct 1997) |
| bilateral medial orbital ecchymoses | <clinical sign, ophthalmology> The appearance of the eyes produced by subconjunctival haemorrhage and/or periorbital ecchymosis. Synonym: bilateral medial orbital ecchymoses. (21 Jun 2000) |
| bilateral pleurisy | Inflammation of the pleura on both sides of the thorax. Synonym: double pleurisy. (05 Mar 2000) |
| bilateral symmetry | <biology> Describes an organism which is divisible into equal mirror halves in one plane only. (09 Oct 1997) |
| bilateral synchrony | Electroencephalographic activity that is recorded over both hemispheres simultaneously; usually used in reference to spike and wave activity. (05 Mar 2000) |
| idiopathic bilateral vestibulopathy | Slowly progressive disorder affecting young to middle-aged adults, manifested as gait unsteadiness (especially when visual cues are absent) and oscillopsia, unaccompanied by vertigo and hearing loss. (05 Mar 2000) |
| american speech-language-hearing association | A professional society concerned with the diagnosis, prevention, treatment, and remediation of speech, language, and hearing disorders. (12 Dec 1998) |
| rehabilitation of hearing impaired | Procedures for assisting a person with a hearing disorder to maximum comprehension in communication. (12 Dec 1998) |
| resonance theory of hearing | That the basilar membrane of the cochlea acts as a resonating structure, recording low tones from its apical turns and high tones from its basal turns. Synonym: Helmholtz theory of hearing. (05 Mar 2000) |
| Weber's test for hearing | The application of a vibrating tuning fork to one of several points in the midline of the head or face, to ascertain in which ear the sound is heard best by bone conduction, that ear being the affected one if the sound-conducting apparatus (middle ear) is at fault (positive test), but probably the normal one if the neurosensory apparatus is diseased (negative test). (05 Mar 2000) |
| hearing | The sensation of sound. (12 Dec 1998) |
| hearing aid | An electronic amplifying device designed to bring sound more effectively into the ear; it consists of a microphone, amplifier, and receiver. (05 Mar 2000) |