| S4 | segment 4 |
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| s4 gallop | <clinical sign> A presystolic atrial sound that immediately precedes the first heart sound (S1). This finding on auscultation of the heart may indicate myocardial disease. It is also found in those with hypertension. (17 Dec 1997) |
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| S4 |
Structural Sensory Signature System
Ãâó: www.fas.org/spp/military/docops/usaf/2020/app-v.ht...
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| S4 g. |
an accentuated, audible fourth heart sound usually associated with cardiac disease, often that characterized by altered ventricular compliance.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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