clar697
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A normal male subject has a transient increase in blood pressure to 146/88 mm Hg after rapid infusion of 2 L of normal saline. Which of the following sets of findings in serum concentrations is most likely?
A) Decreased ANF, decreased renin, decreased aldosterone, decreased angiotensin, increased ADH
B) Decreased ANF, increased renin, increased aldosterone, increased angiotensin, decreased ADH
C) Decreased ANF, increased renin, increased aldosterone, increased angiotensin, increased ADH
D) Increased ANF, decreased renin, decreased aldosterone, decreased angiotensin, decreased ADH
E) Increased ANF, decreased renin, decreased aldosterone, decreased angiotensin, increased ADH
F) Increased ANF, increased renin, increased aldosterone, increased angiotensin, decreased ADH
(ANF=atrial natriuretic factor; ADH=vasopressin)
I chose D. In response to a transient increase in BP, ANF would increase to reduce the BP, via decreasing Na and H2O. I don’t believe the others have a role in increased BP. Rather, renin, aldosterone, angiotensin, and ADH would increase if the scenario were a transient decrease in BP.
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| atulkalanuria
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yes D looks to be correct becoz ANF will be released due to atrial stretch and lead to low levels of renin promoting decreased fluid retention.
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| Jackofknives
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D
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| usmlekiller
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D 
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