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Author10 Posts
  #1

Easy question to boost up confidence smiling face

Pt complains of double vision. Can't elevate right eye from the aBducted position. Which muscle is paralyzed?

a) R inferior oblique
b) R lateral rectus
c) R inferior rectus
d)R superior rectus
e) R superior oblique

What CN?

___________________
La vita e bella!

  #2

a) R inferior oblique --> CN III

  #3

Yeah, I fell for that answer, too. But it's not the correct one. Try again! Key word is from aBducted position (not normal position). What is the only muscle that will elevate eye from the aBducted position?

___________________
La vita e bella!

  #4

Yeah, I fell for that answer, too. But it's not the correct one. Try again! Key word is from aBducted position (not normal position). What is the only muscle that will elevate eye from the aBducted position?

And what is the test that you do to test this muscle?

___________________
La vita e bella!

  #5

ah man.. silly me :oops:
yeah... Abducted is superior rectus! CN III innervation.

But how would you test it? I am not sure... I would think the test is as your question states -> abduct eye and see of patient can elevate the eye?

  #6

SR depresses n intorts eyeball
IR elevates n intorts d eyeball
SO depresses n extorts
IO elevates n extorts
SO n IR depress d eyeball
IO n SR elevate d eyeball

n. supply Re6( SO4)3
yeah u r right SR is tested by asking d pt to elevate abducted eye.
IR is tested by asking d pt to look up with abducted eye.
SO by asking d pt to look down with ADducted eye
IO by elevating d ADducted eye.

___________________
I hear and I forget. I see and I remember. I do and I understand.
--Confucius

  #7

Ok, I am kinda confused :?

How can Superior Rectus depress the eyeball? I thought it elevates it. And Inferior rectus does the opposite.

Hmmm, can u explain mash?

___________________
La vita e bella!

  #8

im sorry bela i got it all messed up
u r right SR elevates n intorts
IR depresses n intorts
dat was typing error..........

___________________
I hear and I forget. I see and I remember. I do and I understand.
--Confucius

  #9

Ok guys, just looked up some of my notes from kaplan and here is what I have. Learn it cold grin

Superior Rectus :arrow: elevates and aDDucts the eye from neutral position. From the aBducted position, it’s the only muscle that can elevate the eye.
Test: Ask pt to first look to the side, then look up.

Inferior Oblique :arrow: elevates and aBducts the eye from neutral position. From the
aDDucted position, it’s the only muscle that can elevate the eye.
TEST: Ask pt to look first to the nose, then look up: up and in “toward the bridge of nose.”

Inferior Rectus :arrow: depresses and aDDucts the eye from neutral position. From the aBducted position, it’s the only muscle that can depress the eye.
TEST: Ask pt to first look to the side, then look down.

Superior Oblique :arrow: depresses and aBducts the eye from neutral position. From the
aDDucted position, it’s the only muscle that can depress the eye.
TEST:Ask pt to look first to the nose, then look down: “down and in” toward the tip of the nose.

Medial/Lateral Rectus :arrow: aDDuct/aBduct eye
TEST for Medial: Ask pt to look at the nose medially.
TEST for Lateral:Ask pt to look to the side.

___________________
La vita e bella!

  #10

thanx!

___________________
I hear and I forget. I see and I remember. I do and I understand.
--Confucius







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