| LSM | late systolic murmur; lymphocyte separation medium; lysergic acid morpholide |
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| MDM | medical decision making; mid-diastolic murmur; minor determinant mix [penicillin] |
| MER | mean ejection rate; medical emergency room; methanol extraction residue; murmur/energy ratio |
| PM | after death (Lat. post mortem); after noon [Lat. post meridiem]; mean pressure; pacemaker; pantomogr... |
| PSM | postmitochondrial supernatant; presystolic murmur |
| seesaw murmur | Murmur heard in both systole and diastole of the heart, as in aortic stenosis and insufficiency. Synonym: seesaw murmur. (05 Mar 2000) |
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| pulmonary murmur | A murmur produced at the pulmonary orifice of the heart, either obstructive or regurgitant. (05 Mar 2000) |
| hourglass murmur | One in which there are two areas of maximum loudness decreasing to a point midway between the two. (05 Mar 2000) |
| Steell's murmur | <cardiology, clinical sign> An early diastolic murmur of pulmonary insufficiency secondary to pulmonary hypertension, as in mitral stenosis and various congenital defects associated with pulmonary hypertension. Synonym: Steell's murmur. (05 Mar 2000) |
| stenosal murmur | An arterial murmur due to narrowing of the vessel from pressure or organic change. (05 Mar 2000) |
| Still's murmur | An innocent musical murmur resembling the noise produced by a twanging string; almost exclusively in young children, of uncertain origin and ultimately disappearing. (05 Mar 2000) |
| nun's murmur | <cardiology, clinical sign> A brief or continuous noise originating from the neck veins that may be confused with cardiac murmurs, particularly with the continuous murmur of patent ductus arteriosus. Synonym: bruit de diable, nun's murmur. (05 Mar 2000) |
| systolic murmur | <clinical sign> A sound that is produced by the turbulent flow of blood during the phase of ventricular contraction. The finding of a systolic murmur on physical examination can suggest a heart valve abnormality (for example aortic stenosis, mitral regurgitation, etc.). (27 Sep 1997) |
| diamond-shaped murmur | A crescendo-decrescendo murmur, from the shape of the frequency intensity curve of the phonocardiogram, often audible as such. (05 Mar 2000) |
| diastolic murmur | A murmur heard during diastole. (05 Mar 2000) |
| Duroziez' murmur | A two-phase murmur over peripheral arteries, especially the femoral artery, due to rapid ebb and flow of blood during aortic insufficiency. Synonym: Duroziez' sign. (05 Mar 2000) |
| dynamic murmur | A heart murmur due to anaemia or to any cause other than a valvular lesion. (05 Mar 2000) |
| innocent murmur | A cardiac murmur not associated with a significant heart lesion. Synonym: innocent murmur, inorganic murmur. (05 Mar 2000) |
| inorganic murmur | A cardiac murmur not associated with a significant heart lesion. Synonym: innocent murmur, inorganic murmur. (05 Mar 2000) |
| obstructive murmur | A murmur caused by narrowing of one of the valvular orifices. (05 Mar 2000) |