| PM | after death (Lat. post mortem); after noon [Lat. post meridiem]; mean pressure; pacemaker; pantomogr... |
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| PSG | peak systolic gradient; phosphate, saline, and glucose; polysomnogram; presystolic gallop; pregnancy... |
| PSM | postmitochondrial supernatant; presystolic murmur |
| presystolic | <physiology> Preceding the systole or contraction of the heart; as, the presystolic friction sound. Source: Websters Dictionary (01 Mar 1998) |
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| presystolic gallop | Gallop rhythm in which the gallop sound follows atrial systole in late diastole and is an audible fourth heart sound due to forceful ventricular filling. Synonym: atrial gallop. Protodiastolic gallop, gallop rhythm in which the gallop sound occurs in early diastole and is an abnormal third heart sound. (05 Mar 2000) |
| presystolic murmur | A murmur heard at the end of ventricular diastole (during atrial systole if in sinus rhythm), usually due to obstruction at one of the atrioventricular orifices. Synonym: atriosystolic murmur, late diastolic murmur. (05 Mar 2000) |
| presystolic thrill | A thrill immediately preceding the ventricular contraction, that is sometimes felt on palpation over the apex of the heart. (05 Mar 2000) |
| presystolic murmur |
a cardiac murmur occurring immediately prior to ventricular ejection, usually associated with atrial contraction and the acceleration of blood flow through a narrowed atrioventricular valve.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| presystolic |
1. pertaining to the beginning of systole. 2. occurring just before systole.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| presystolic g. |
S4 g.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| presystolic m. |
a cardiac murmur occurring immediately prior to ventricular ejection, usually associated with atrial contraction and the acceleration of blood flow through a narrowed atrioventricular valve.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| presystolic t. |
a thrill felt just before the systole by the hand placed over the apex of the heart.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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