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S3 gallop

   Also found in: Dictionary/thesaurus, Legal, Encyclopedia, Wikipedia 0.01 sec.
gallop /gal·lop/ (gal´op) a disordered rhythm of the heart; see also under rhythm.
atrial gallop  S
diastolic gallop  S
presystolic gallop  S
S3 gallop  an accentuated third heart sound in patients with cardiac disease characterized by pathological alterations in ventricular filling in early diastole.
S4 gallop  an accentuated, audible fourth heart sound usually associated with cardiac disease, often that with altered ventricular compliance.
summation gallop  one in which the third and fourth sounds are superimposed, appearing as one loud sound; usually associated with cardiac disease.
ventricular gallop  S

S3 gallop
Third heart sound Cardiology The heart sound that coincides with the onset of a low frequency diastolic wave generated by rapid filling; the SG is best heard at the apex of the left lateral decubitus position; the SG indicates ↓ ventricular compliance, and is characteristic of CHF; 'physiologic' SGs occur in children and young adults. See Congestive heart failure.


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Clinical Evidence: In a series of three controlled experiments comparing non-electronic, cardiology-type stethoscopes and the Littmann Electronic Stethoscope Model 3000 Series: Detecting S3 gallops: 191 cardiologists listened to pre-recorded heart sounds with and without an S3 gallop of two different magnitudes, presented in random order and in the presence of ambient noise.
et al, utilized Daxor's BVA-100 Blood Volume Analyzer and was the first study of its kind to compare clinical assessment of congestive signs such as increased jugular venous pressure, rales, hepatomegaly, S3 gallop, blood pressure, with a measured blood volume.
 
 
 
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