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1. S1 sound:
Answer
closure of AV valves (tricuspid & mitral) lub corresponds with carotid pulse
loudest at apex
2. S2 sound:
Answer
Closure of the semilunar valves (aortic & pulmonic) sounds like dup
loudest at base
3. S1 split:
Answer Tricuspid and mitral valves closing asynchronously
4. S2 split:
Answer Aortic and pulmonic valves closing asynchronously
5. S3 sound:
Answer
ventricular resistance to filling during rapid filling phase volume overload
"Kentucky"
6. S4 sound:
Answer
ventricular resistance to filling at end of diastole decreased compliance
systolic overload "Tennessee"
7. S1, S2:
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