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Old 08-12-2012
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Kidney Where do we find increased renin activity?

A previoulsy healthy 56yr old man has sudden onset of severe headache that becomes worse in the afternoon. BP 180/110mmhg. Renal arteriography show 85% occlusion in right renal artery. Lab finding that best predict whether operation that relieve the obstruction will reduce the BP to normal is increase in renin activity in
A. L renal artery vs R renal artery
B. L renal vein vs R renal vein
C. R renal artery vs L renal artery
D. R renal vein vs L renal vein
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Old 08-12-2012
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D. Right renal vein VS Left Renal vein.
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Old 08-12-2012
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Quote:
Originally Posted by Doc4Step1 View Post
D. Right renal vein VS Left Renal vein.
Could u explain me why
thank
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Old 08-13-2012
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whats diff b/w option B and D
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Old 08-16-2012
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Ohh this was news to me:

Renal Vein Renin Test

This is another test for diagnosing renovascular hypertension, and is performed in the Radiology department of a hospital. Under local anesthesia, a flexible plastic tube (catheter) is inserted in a large vein in the groin, and is pushed up inside the vein until it's at the level of the kidneys. Then, under x-ray control, the tip of the catheter is advanced into the vein draining one kidney, and a blood sample taken for measurement of renin. Another sample is taken from the other kidney. Normally, both kidneys secrete the same amount of renin. If the artery to one kidney is obstructed, the kidney responds by making an excessive amount of renin, while the good kidney may shut off its secretion to compensate. The test is interpreted by comparing the renin levels on the two sides.


Very interesting
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Cardiovascular-, Physiology-, Renal-, Step-1-Questions

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