USMLE Forum Archives - USMLE Step 1 - RENAL BLOOD SUPPLY
RENAL BLOOD SUPPLY
drspleen - 03-17-11 04:58
A 25-year-old individual injures his right renal artery during a motor vehicle accident. If this injury results in a 50% decrease of his renal blood supply in the right kidney, which part of the kidney will be most at risk for ischemia?
* A. Medulla
* B. Initially the cortex, but subsequently the medulla will be most at risk
* C. Cortex
* D. Neither cortex nor medulla will be at risk due to collateral flows
* E. Both cortex and medulla will be equally at risk
drspleen - 03-17-11 04:58
A 25-year-old individual injures his right renal artery during a motor vehicle accident. If this injury results in a 50% decrease of his renal blood supply in the right kidney, which part of the kidney will be most at risk for ischemia?
* A. Medulla
* B. Initially the cortex, but subsequently the medulla will be most at risk
* C. Cortex
* D. Neither cortex nor medulla will be at risk due to collateral flows
* E. Both cortex and medulla will be equally at risk
The correct answer and explanation will be available after you answer.
Page 1
#1
Re: RENAL BLOOD SUPPLY babbu5508 - 03-18-11 20:27 My answer is: a.
medullary pyramids are the part of the kidney which are the most susceptible to ischemia..............
#3
Re: RENAL BLOOD SUPPLY sudha2015 - 03-19-11 10:09 A 25-year-old individual injures his right renal artery during a motor vehicle accident. If this injury results in a 50% decrease of his renal blood supply in the right kidney, which part of the kidney will be most at risk for ischemia
a
#4
Re: RENAL BLOOD SUPPLY babbu5508 - 03-20-11 01:20 In humans, the kidneys together receive roughly 25% of cardiac output, amounting to 1.5 L/min in a 70-kg adult male......
#5
Re: RENAL BLOOD SUPPLY
drspleen - 03-22-11 15:26 The renal blood supply is normally 20% of cardiac output. 90-95% of renal blood flow goes to the cortex; the renal medulla receives only 5-10% of renal blood flow. Therefore, compared to the renal cortex, the renal medulla is more sensitive to hypoperfusion states and ischemic damage if renal blood flow is compromised. There is no collateral flow to the kidney.
Page 1