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S1
(redirected from first heart sound)

   Also found in: Medical 0.01 sec.
AcronymDefinition
S1Supplement 1 (to a document or publication)
S1Adjutant (Army)
S1Personnel Office (USMC)
S1First Heart Sound
S1Subfragment 1 (biophysics)
S1Sleep Mode 1 (high-energy computer power-down state)


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Other heart cavities were in normal size and their functions were normal On his physical examination blood pressure was 120/80 mmHg, heart rate 100 /min and first heart sound was decreased.
Laennec distinguished two heart sounds but attributed the first heart sound to ventricular systole and the second sound to atrial systole.
 
 
 
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