| MVPS | Medicare Volume Performance Standards; mitral valve prolapse syndrome |
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| MVP-SC | mitral valve prolapse-systolic click [syndrome] |
| MI | first meiotic metaphase; maturation index; medical illustrator; medical informatics; medical inspect... |
| MR | Maddox rods; magnetic resistance; magnetic resonance; mandibular reflex; mannose-resistant; may repe... |
| MS | Maffuci syndrome; maladjustment score; mandibular series; Marfan syndrome; Marie-Strumpell [syndrome... |
| parachute mitral valve | Congenital deformity of the mitral valve characterised by the presence of a single papillary muscle from which the chordae of both valve leaflets divide; thus the resemblance to a parachute; the condition often produces a stenosis as the combined result of the tugging action of the chordae on and the subsequent narrowing between the leaflets. Synonym: parachute deformity. (05 Mar 2000) |
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| mitral | Pertaining to a miter; resembling a miter; as, the mitral valve between the left auricle and left ventricle of the heart. Origin: Cf. F. Mitral. See Miter. Source: Websters Dictionary (01 Mar 1998) |
| mitral area | The region of the chest over the apex of the heart, where the sounds, normal or pathologic, produced at the mitral valves are usually heard most distinctly. (05 Mar 2000) |
| mitral cells | Large nerve cell's in the olfactory lobe of the brain whose dendrites synapse (in glomeruli) with axons of the olfactory receptor cell's of the nasal mucous membrane, and whose axons pass centrally in the olfactory tract to the olfactory cortex. (05 Mar 2000) |
| mitral commissurotomy | Opening the narrowed mitral orifice for the relief of mitral stenosis. (05 Mar 2000) |
| mitral facies | The pink, slightly cyanosed cheeks of patients with mitral valve disease. (05 Mar 2000) |
| mitral gradient | The diastolic pressure difference between the left atrium and left ventricle. (05 Mar 2000) |
| mitral incompetence | <cardiology> The back flow of blood from the left ventricle to the left atrium through a defective mitral bicuspid valve. The most common cause for mitral regurgitation is rheumatic fever. Other causes include: myocardial infarction, massive calcification of the mitral annulus (in the elderly), lupus, rheumatoid arthritis, infectious endocarditis and ankylosing spondylitis. (13 Nov 1997) |
| mitral insufficiency | Malfunction of the mitral valve. Mitral insufficiency allows the backflow of blood (regurgitation) from the left ventricle into the left atrium. (12 Dec 1998) |
| mitral murmur | A murmur produced at the mitral valve, either obstructive or regurgitant. (05 Mar 2000) |
| mitral orifice | An atrioventricular opening which leads from the left atrium into the left ventricle of the heart. Synonym: ostium atrioventriculare sinistrum, ostium arteriosum. (05 Mar 2000) |
| mitral regurgitation | <cardiology> The back flow of blood from the left ventricle to the left atrium through a defective mitral bicuspid valve. The most common cause for mitral regurgitation is rheumatic fever. Other causes include: myocardial infarction, massive calcification of the mitral annulus (in the elderly), lupus, rheumatoid arthritis, infectious endocarditis and ankylosing spondylitis. (13 Nov 1997) |
| mitral stenosis | <cardiology> A congenital or acquired heart valve abnormality that describes the narrowing and ineffective opening of the mitral valve. (13 Nov 1997) |
| mitral tap | The palpable equivalent of the opening snap of the mitral valve. (05 Mar 2000) |
| 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) |