| Author | 7 Posts |
dr_jojo
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6. A 37-year-old woman is brought to the emergency department because she has been unable to see out of her right eye since awakening 2 hours ago. She states that any movement of the eye is painful. Examination shows visual acuity of 20/200 in the right eye and 20/20 in the left eye. The optic fundi are normal. The left pupil reacts normally to light. The right pupil is poorly reactive to direct light. The remainder of the eye examination shows no abnormalities. Which of the following is the most likely site of the lesion?
A
) Left optic nerve
B
) Left optic radiation
C
) Left optic tract
D
) Left visual cortex
E
) Optic chiasm
F
) Retina
G
) Right optic nerve
H
) Right optic radiation
I
) Right optic tract
J
) Right visual cortex
The response options for the next two items are the same. You will be required to select one answer for each item in the set.
For each patient with peripheral nerve dysfunction, select the most likely site of nerve injury.
A
) Axillary nerve
B
) Cervical nerve root at the cervical foramen
C
) Long thoracic nerve
D
) Median nerve above the elbow
E
) Median nerve at the elbow
F
) Median nerve at the wrist
G
) Musculocutaneous nerve above the elbow
H
) Musculocutaneous nerve at the elbow
I
) Musculocutaneous nerve at the wrist
J
) Radial nerve above the elbow
K
) Radial nerve at the elbow
L
) Radial nerve at the wrist
M
) Suprascapular nerve
N
) Thoracodorsal nerve
O
) Ulnar nerve above the elbow
P
) Ulnar nerve at the elbow
Q
) Ulnar nerve at the wrist
7.
A previously healthy 42-year-old carpenter comes to the physician because of a 6-month history of pain and numbness in his dominant hand that awakens him at night. He describes numbness in his long and index fingers after driving for extended periods of time. Examination shows minimal atrophy of the thenar muscles. There is normal sensation to light touch on the little finger and the palm of the right hand. Sensation to light touch is decreased at the tip of the thumb, index finger, and long finger. X-ray films of the right elbow and wrist show no abnormalities.
For each patient with peripheral nerve dysfunction, select the most likely site of nerve injury.
8. A previously healthy 37-year-old man comes to the physician because of a 2-month history of pain in the forearm and little finger of his dominant hand; he has been working as a receptionist for 6 months. He describes numbness in his little finger and weakness of his grip. There is decreased sensation to light touch at the tip of the little finger. Paresthesias are elicited with compression of the cubital tunnel.
Edited by dr_jojo on 03/14/07 - 09:57 AM
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| robin082006
Forum Hero
Topics: 471
Posts: 5,125
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G
) Right optic nerve
7.F
) Median nerve at the wrist
8P
) Ulnar nerve at the elbow
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| prasanthi
Forum Newbie
Topics: 0
Posts: 6
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i think 2.L loss of sensation at the tips of thumb ,index n middle fingers. not sure?????
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| snake0613
Forum Elite
Topics: 90
Posts: 183
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sure,medial nerve to control them
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| webjeee
Forum Guru
Topics: 99
Posts: 349
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do they have form 4 for stepII
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| cookie909
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GFP
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| mdwannabe
Forum Guru
Topics: 37
Posts: 1,133
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1.R optic neuritis is the Dx
2. to loose sensation at tip pf thumb but not at base the injury must be Median Nerve at the wrist, (likely Carpal Tunnel) since small brach ... the superficial cutaneous branch of Median N. goes above the retinaculum.
3. agree with ulnar nerve injury on last q.
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