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disorders that restrict the outflow of blood from left ventricle.
disorders that impair contractility of the heart.
allow blood to flow backward into the left atrium.
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occurs as a result of the ventricles
1 2 general causes of left sided HF due to
inability to fill or pump effectively.
3 other causes of left sided HF 4 classifications of HF
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Terms in this set (88)
occurs as a result of the ventricles heart failure
inability to fill or pump effectively.
causes of heart failure CAD, MI, cardiomyopathy, valvular diseases, HTN,
any cardiac ischemia.
, heart failure pathophysiology left and right side of heart, must work together to
ensure equal amts of blood entering and leaving the
heart.
in HF, the amount of blood returned to heart
becomes more than either ventricle can handle.
Heart loses ability to pump effectively.
typically weakens first left sided heart failure.
classifications of HF left sided HF.
right sided HF.
biventricular HF.
congestive HF.
force that must be generated by left afterload
ventricle in order to effect blood
through aortic valve into the aorta
pressure within arteries and aorta Peripheral vascular resistance
What does HTN do to PVR? increases PVR.
what makes left ventricle work increased pressure.
harder?
percentage volume of blood pumped ejection fraction
with each contraction
normal ejection fraction 50-75%
what is the MAJOR cause of HF? HTN
other causes of left sided HF aortic stenosis.
cardiomyopathy.
coarctition of the aorta.
infections of myocardium.
myocardial infarction.
mitral regurgitation.