| Erb atrophy | A form of progressive muscular atrophy in which the disease begins in the muscle and not in the spinal centres. Synonym: Erb atrophy, idiopathic muscular atrophy. (05 Mar 2000) |
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| Erb disease | Progressive weakness and atrophy of the muscles of the tongue, lips, palate, pharynx, and larynx, usually occurring in later life; most often caused by motor neuron disease. Synonym: bulbar palsy, bulbar paralysis, Duchenne's disease, Erb disease, glossolabiolaryngeal paralysis, glossolabiopharyngeal paralysis. (05 Mar 2000) |
| Erb palsy | A type of brachial birth palsy in which there is paralysis of the muscles of the upper arm and shoulder girdle (deltoid, biceps, brachialis, and brachioradialis muscles) due to a lesion of the upper trunk of the brachial plexus or of the roots of the fifth and sixth cervical roots. Synonym: Duchenne-Erb paralysis, Erb paralysis. (05 Mar 2000) |
| Erb paralysis | A type of brachial birth palsy in which there is paralysis of the muscles of the upper arm and shoulder girdle (deltoid, biceps, brachialis, and brachioradialis muscles) due to a lesion of the upper trunk of the brachial plexus or of the roots of the fifth and sixth cervical roots. Synonym: Duchenne-Erb paralysis, Erb paralysis. (05 Mar 2000) |
| Erb sign | <clinical sign> Increased electric excitability of the muscles to the galvanic current, and frequently to the faradic, in tetany. Synonym: Erb-Westphal sign. (05 Mar 2000) |
| Erb spinal paralysis | Chronic myelitis of syphilitic origin. (05 Mar 2000) |
| Erb-Charcot disease | A type of cerebral palsy in which there is bilateral spasticity, with the lower extremities more severely affected. Compare: flaccid paralysis. Synonym: Erb-Charcot disease, infantile diplegia, Little's disease, spastic spinal paralysis, tabes spasmodica. (05 Mar 2000) |
| Erb-Westphal sign | <clinical sign> Abolition of the patellar tendon reflex, in tabes and certain other diseases of the spinal cord, and occasionally also in brain disease. Synonym: Erb sign, Westphal's phenomenon, Westphal's sign, Westphal-Erb sign. (05 Mar 2000) |
| ERBF | <abbreviation> Effective renal blood flow. (05 Mar 2000) |
| erbium | <chemistry, element> A rare metallic element associated with several other rare elements in the mineral gadolinite from Ytterby in Sweden. Its salts are rose-coloured and give characteristic spectra. Its sesquioxide is called erbia. Atomic weight: 165.9 Abbreviation: Er Origin: NL. From Ytterby, in Sweden, where gadolinite is found. Cf. Terbium, Yttrium, Ytterbium. Source: Websters Dictionary (01 Mar 1998) |
| ercalcidiol | A biologically active and major circulatory metabolite of vitamin D2. Synonym: ercalcidiol. (05 Mar 2000) |
| ercalciol | <hormone> The vitamin produced by the body when exposed to UV light. Plays important role in calcium and phosphorus metabolism. Deficiency is known as rickets. Symptoms include soft (weak) and bendable bones, stunted growth, bow legs, chest deformities and knock-knees. (27 Sep 1997) |
| ercalcitriol | A biologically active metabolite of vitamin D2. Synonym: ercalcitriol. (05 Mar 2000) |
| ERCP | <investigation, procedure> A diagnostic-therapeutic procedure that involves the X-ray of the pancreatic duct and biliary tree after the selective introduction of a contrast material into the common bile duct and pancreatic duct. In this procedure, a flexible endoscope is passed through the mouth and down into the duodenum. A catheter is then passed through the endoscope and inserted into the pancreatic and bile ducts. It is uncomfortable but not painful, is performed under intravenous sedation, usually without general anaesthesia, and has a low incidence of complications. A contrast agent is injected into the catheter which highlights the coarse and calibre of the ducts. Narrowing, stones or ductal tumours can be identified with this procedure. Therapeutic measures can often be take at the time of ERCP to remove stones in the bile ducts or to relieve obstructions of the bile ducts, so that traditional open surgeries can be avoided. ERCP is increasingly accepted as the diagnostic and therapeutic procedure of choice in identifying and removing gallstones in the bile ducts. Acronym: ERCP (12 Dec 1998) |
| erd | The earth. <zoology> Erd shrew, the common European shrew (Sorex vulgaris); the shrewmouse. Origin: OE. Erd, eard, earth, land, country, AS. Eard; akin to OS. Ard dwelling place, OHG. Art plowing, tillage, Icel. Orth crop, and to L. Arare to plow, E. Ear to plow. Source: Websters Dictionary (01 Mar 1998) |