Q

Prep for USMLE Forum

» Log in | Register

Forum

Step 1

Match

Prep4USMLE Forum » USMLE Step 1 Forum » Physiology Forum

Author

5 Posts

RayBerg
Forum Senior

Topics: 32
Posts: 150

05/29/07 - 05:15 PM

Another interesting q I came across -

A 43-year-old woman is found to have a blood pressure of 200/140 during
a routine examination for a life insurance policy. Further examination
reveals retinal hemorrhages and the electrocardiogram (ECG) shows left
axis deviation. Which of the following is most likely to be decreased in this woman?
A) Arteriolar density
B) Arteriolar wall thickness
C) Arteriolar wall to lumen ratio
D) Capillary wall to lumen ratio
E) Total peripheral Resistance

new_n_lost
Forum Hero
avatar

Topics: 663
Posts: 6,107

05/29/07 - 05:28 PM

B) Arteriolar wall thickness

___________________
FORUM RULES-- Those who believe in telekinesis, raise my hand. I get enough exercise just by pushing my luck --P4U World.." The pure and simple truth is rarely pure and never simple."

dncosta
Licensed, finally
avatar

Topics: 19
Posts: 603

05/29/07 - 05:49 PM

D would be my guess. This patient likely has malignant hypertension, so B, C and E are increased. A, I am not sure, but I think is not altered in hypertension.

Luckyall
Forum Guru

Topics: 11
Posts: 593

05/29/07 - 06:39 PM

mmmm very nice Qs im going for A) decr. arterolar density

High BP ---> actual loss of arterioles( decreased numerical density)--> autoregulatory mechanism
choise C Wall/lumen ratio if anything is INCREASED due to HTN--> hypertrophy arteries& arterioles---> thickening vessel
choise B i guess is wrong , read above
Choise E) TPR incr

RayBerg
Forum Senior

Topics: 32
Posts: 150

05/29/07 - 08:12 PM

Luckyall wrote:
mmmm very nice Qs im going for A) decr. arterolar density

High BP ---> actual loss of arterioles( decreased numerical density)--> autoregulatory mechanism
choise C Wall/lumen ratio if anything is INCREASED due to HTN--> hypertrophy arteries& arterioles---> thickening vessel
choise B i guess is wrong , read above
Choise E) TPR incr

You're quickly turning into one of my favorite posters!!! I'm beginning to idolize you! You're on the money!!

You don't have permission to post.