| MSS | Marshall-Smith syndrome; massage; Medical Superintendents' Society; Medicare Statistical System; men... |
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| SS | disulfide; sacrosciatic; saline soak; saline solution; saliva sample; saliva substitute; Salmonella-... |
| AS | acetylstrophanthidin; acidified serum; acoustic schwannoma; acoustic stimulation; active sarcoidosis... |
| PS | pacemaker syndrome; paired stimulation; paradoxical sleep; paraspinal; parasympathetic; Parkinson sy... |
| SVAS | supravalvular aortic stenosis; supraventricular aortic stenosis |
| subvalvar stenosis | <cardiology> The congenital narrowing of the outflow tract of the left ventricle due to a ring of fibrous tissue or enlargement of the ventricular septum. (27 Sep 1997) |
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| subvalvular aortic stenosis | <radiology> Types: anatomic/fixed subaortic stenosis: associated with cardiac defects in 50% (usually VSD), functional/dynamic subartic stenosis: asymetrical septal hypertrophy (ASH), idiopathic hypertrophic subaortic stenosis (IHSS), hypertrophic obstructive cardiomyopathy (HOCM) findings: asymmetrically thicker ventricular septum than free wall of the left ventricle (95%), normal/small left and right ventricular cavities (95%), systolic anterior motion of the mitral valve, lucent subaortic filling defect in systole, coarse systolic flutter of valve cusps, may see mitral regurgitation (secondary to abnormal position of anterolateral pappilary muscle) see: aortic stenosis (12 Dec 1998) |
| supravalvar aortic stenosis-infantile hypercalcaemia syndrome | <syndrome> Supravalvar aortic stenosis associated with elfin facies, mental retardation, and hypercalcaemia; usually sporadic; perhaps an irregular dominant trait. (05 Mar 2000) |
| supravalvar aortic stenosis syndrome | <syndrome> Supravalvar aortic stenosis (usually membranous) sometimes associated with pulmonary valvular or peripheral arterial stenosis but with normal facies and mentality; autosomal dominant inheritance. Compare: Williams syndrome. (05 Mar 2000) |
| supravalvar stenosis | Narrowing of the aorta above the aortic valve by a constricting ring or shelf, or by coarctation or hypoplasia of the ascending aorta. (05 Mar 2000) |
| supravalvular aortic stenosis | <radiology> Types: localised hourglass narrowing just above aortic sinuses, discrete fibrous membrane above sinuses of Valsalva, diffuse tubular hypoplasia of ascending aorta and branching arteries associated with: peripheral pulmonary stenosis, valvular and discrete subvalvular aortic stenosis, Marfan syndrome, Williams syndrome findings: dilatation and tortuosity of coronary arteries (may undergo early atherosclerotic degeneration secondary to high pressure), narrowing of the supravalvular area (normal root diameter: 20-37mm), normal movement of cusps (12 Dec 1998) |
| supravalvular stenosis | Stenosis distal to the aortic valve due usually to a congenital membrane. Patients usually have a kind of "elfin" facies and resemble each other more than they do members of their family. (05 Mar 2000) |
| Dittrich's stenosis | Narrowing of the outflow tract of the right ventricle below the pulmonic valve; may be due to a localised fibrous diaphragm just below the valve or, more commonly, to a long narrow fibromuscular channel. Synonym: Dittrich's stenosis. (05 Mar 2000) |
| double aortic stenosis | Subaortic stenosis associated with stenosis of the valve itself, both lesions being congenital. (05 Mar 2000) |
| infundibular stenosis | Narrowing of the outflow tract of the right ventricle below the pulmonic valve; may be due to a localised fibrous diaphragm just below the valve or, more commonly, to a long narrow fibromuscular channel. Synonym: Dittrich's stenosis. (05 Mar 2000) |
| oesophageal stenosis | Stricture of the oesophagus. (12 Dec 1998) |
| tricuspid stenosis | Pathologic narrowing of the orifice of the tricuspid valve. (05 Mar 2000) |
| tricuspid valve stenosis | The pathologic narrowing of the orifice of the tricuspid valve. (12 Dec 1998) |
| fish-mouth mitral stenosis | Extreme mitral stenosis. (05 Mar 2000) |
| laryngeal stenosis | Narrowing or stricture of any or all areas of the larynx; may be congenital or acquired. (05 Mar 2000) |