Good Concept Of Anemia

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Good Concept Of Anemia

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pr20
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12/20/07 - 03:28 PM

A 40-year old alcoholic has complaints of tiredness and easy fatigue.He is sent by a cardiologist for hemodynamic monitoring to address the possibility of heart failure.Pre-testing blood work reveals a profound macrocytic anemia.Hemodynamic testing reveals an increased cardiac output.Which of the following is most likely increased in this patient?

A. Arteriolar diameter
B. Blood viscosity
C. Peripheral vascular resistance
D. Splanchnic blood flow
E. Tissue oxygen tension

arlete
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12/20/07 - 03:42 PM

A

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GoodGirl
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12/20/07 - 09:24 PM

By exclusion going with A

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unique1
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12/20/07 - 10:24 PM

A

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pr20
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12/21/07 - 12:19 PM

In severe anemia,diminished transport of oxygen in the blood leads to hypoxia in the tissues.The hypoxia causes small arteries and arterioles to dilate,which allows greater than normal amounts of blood to return to the heart.
REMEMBER....hypoxia anywhere in th body causes vasodilation EXCEPT in lungs where hypoxia causes vasoconstriction.

Ig F
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02/28/08 - 01:27 PM

dilatation is also because of maximum delivery of blood to the poorly oxygenated tissues because of anemia...... nod

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maoudoody
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02/28/08 - 11:34 PM

yes every where in the body hypoxia causes vasodilation except for the lungs : hypoxic vasoconstriction

Edited by maoudoody on 02/29/08 - 11:54 AM

maoudoody
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02/29/08 - 04:45 AM

maoudoody wrote:
yes every where in the body hypoxia causes vasodilation except for the lungs : hypoxic vasoconstriction

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