Heart Sounds I Lecture Powerpoint Flashcards
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Heart sounds are heard in the spots they are in the chest because…
…that is the rough direction of where blood is flowing in the vessels
During diastole, what valves are open?
Mitral and tricuspid valves
S1 heart sound occurs during what phase of the heart cycle? What about S2?
- At the end of diastole/start of systole
- At the end of systole/start of diastole
Blood FLOWS during which phase of the cardiac cycle?
BOTH!!!!!!!!!!!!
Diagnostic study for abnormal heart sounds
Echocardiogram
Stenotic valve definition
A valve that is partially occluded or narrowed
Sclerosis of valve definition
Thickening of valve that causes it to lose its compliance that could result in stenosis
Insufficiency/regurgitation definition
When a valve leaks allowing backward flow when it should be closed
Pulse pressure definition
Difference between systolic and diastolic blood pressure
Atrial systole and diastole ___ ventricular systole and diastole
precede
End systolic volume
Volume of blood remaining in LV following cardiac contraction and ejection of blood
Stroke volume + end systolic volume =
end diastolic volume
Ejection fraction and avg value
Stroke volue/end diastolic volume, should be about 55%
Aortic area Pulmonic area Erb's point Tricuspid area Mitral area Locations
- 2nd intercostal space right sternal border
- 2nd intercostal space, left sternal border
- third intercostal space, left sternal border
- 4th intercostal space, left sternal border
- 5th intercostal space, mid clavicular line
Carotid pulsation to determine S1 vs S2
Should be able to feel the carotid pulse between S1 and S2 if you are having trouble determining which is which