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Cardiac
cardiac physiology
18
Physiology
Graduate
01/07/2010

Additional Physiology Flashcards

 


 

Cards

Term
S3 heart sound due to:
Definition
diastolic inflow through the mitral valve as the ventricle rapidly expands (normal in children and young adults)
Term
S3 in adults is an indicator of:
Definition
left ventricle heart failure
Term
S4 caused by:
Definition
atria vigorously contracting against a stiffened ventricle
Term
S4 indicates:
Definition

the presence of cardiac disease

(ventricular hypertrophy, myocardial ischemia- decreased ventricular compliance-less room for volume the atria is pumping into vent)

Term
S4 is heard when?
Definition
directly before S1, coincides with atrial contraction
Term
Aortic stenosis leads to what kind of pulses?
Definition
reduced, delayed pulses
Term
Aortic regurgitation ________ SV
Definition
increases, due to black flow- leads to increase pulse pressure
Term
Aortic regurgitation ____________ coronary blood flow
Definition
reduces, backflow decreases diastolic pressure (aorta) thereby reducing coronary blood flow
Term
Mitral stenosis often caused by:
Definition
rheumatic fever- inflammation leads to fibrous thickening and calcification
Term
Mitral stenosis leads to ________ left atrial pressure
Definition
elevated (from elevated pulmonary and right-heart pressures)
Term
Mitral stenosis can lead to...
Definition
pulmonary congestion or edema
Term
Mitral stenosis sounds
Definition

Loud S1 sound

High-pitched opening snap due to sudden tensing of chordae tendinae and stenotic leaflets upon opening

Term
Elevated v wave indicates
Definition
acute mitral regurgitation
Term
Standing results in _____ venous return, _________ SV and ___________ Co (increase or decreased)
Definition
Decreased for all, due to blood settling in lower extremities
Term
Standing results in _______ aortic mean pressure
Definition
an unchanged aortic mean pressure, because heart rate and tpr rise
Term
Inspiration causes _______ in intrathoracic pressure, and ____________ right ventricular stroke volume
Definition
decrease, increase (due to increased venous return)
Term
Expiration ________ left ventricular filling and stroke volume
Definition
increases, by breathing out you force blood from the pulmonary vasculature into the left atrium and ventricle
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