| MR | Maddox rods; magnetic resistance; magnetic resonance; mandibular reflex; mannose-resistant; may repe... |
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| MS | Maffuci syndrome; maladjustment score; mandibular series; Marfan syndrome; Marie-Strumpell [syndrome... |
| MVE | mitral valve echo; mitral valve excursion; Murray Valley encephalitis |
| PML | peripheral motor latency; polymorphonuclear leukocyte; posterior mitral leaflet; progressive multifo... |
| PMV | paramyxovirus; percutaneous mitral balloon valvotomy; prolapse of mitral valve |
| mitral tap | The palpable equivalent of the opening snap of the mitral valve. (05 Mar 2000) |
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| mitral valve | <anatomy, cardiology> The heart valve that divides the left atrium and left ventricle. During left atrial contraction, the mitral valve opens to allow blood to flow into the left ventricle. Upon closure, the mitral valve prohibits the regurgitation of blood back into the left atrium. The mitral valve is the only heart valve that has only 2 valve cusps (all others have 3). (13 Nov 1997) |
| mitral valve insufficiency | Backflow of blood from the left ventricle into the left atrium, owing to imperfect functioning of the mitral valve. (12 Dec 1998) |
| mitral valve prolapse | <cardiology> A systolic click-murmur syndrome, floppy-valve syndrome and billowing mitral leaflet syndrome. A common, but highly variable (most individuals are asymptomatic), clinical syndrome that has been described in up to 7% of all females in the 14 to 30 age group. There is also an increased familial incidence suggesting an autosomal dominant form of inheritance. Treatment often includes the avoidance of stimulants (caffeine, nicotine, decongestants) and the use of a beta-blocker medication in select cases. Inheritance: autosomal dominant. Synonym:: Barlow's syndrome. (13 Nov 1997) |
| mitral valve prolapse syndrome | <syndrome> The clinical constellation of findings with or without symptoms due to prolapse of the mitral valve: a nonejection systolic click accentuated in the standing posture, sometimes multiple, sometimes with mitral regurgitation occurring relatively late in systole, and accompanied by echocardiographic evidence of the mitral valve prolapse, usually with thickened leaflets of the valve. Symptoms are non-specific and may include vague chest pains and dyspnea on exertion. Synonym: billowing mitral valve syndrome. (05 Mar 2000) |
| mitral valve stenosis | A rheumatic disease causing diffuse thickening of the mitral valve leaflets by fibrous tissue or calcific deposits. (harrisons' principles of internal medicine, 13th ed, p1052) (12 Dec 1998) |
| mitral valvotomy | Deliberate incision or enlargement by inserting a finger in the mitral valve due to mitral stenosis. (05 Mar 2000) |
| ischemic mitral regurgitation | A regurgitation of the mitral valve caused by ischemic heart disease. (05 Mar 2000) |
| fish-mouth mitral stenosis | Extreme mitral stenosis. (05 Mar 2000) |
| acromial articular facies of clavicle | Synonym: acromial articular surface of clavicle. (05 Mar 2000) |
| adenoid facies | The open-mouthed and often dull appearance in children with adenoid hypertrophy, associated with a pinched nose. (05 Mar 2000) |
| aortic facies | The pale sallow complexion of one suffering from incompetence of the aortic valve. (05 Mar 2000) |
| Parkinson's facies | The expressionless or masklike facies characteristic of parkinsonism. Synonym: masklike face. (05 Mar 2000) |
| cherubic facies | The characteristic child-like facies seen in cherubism; also seen in glycogenosis, particularly type 2. (05 Mar 2000) |
| moon facies | Roundness of the face due to increased fat deposition laterally seen in patients with hyperadrenocorticalism, either of endogenous (e.g., Cushing's disease) or exogenous origin, such as the use of cortisone-like drugs as therapy. (05 Mar 2000) |