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Time Course of EMG/NCS Findings

Topic: Pharmacology

Created on Tuesday, January 16 2007 by

Last modified on Thursday, January 25 2007.

Sadly, you suffer from hemorrhoids. Your malicious surgeon recommends general anesthesia for a hemorrhoidectomy.
When you awaken, he proudly announces, "Congratulations! I have successfully severed your C5 nerve roots as they exit the spinal cord!"
You are kind of concerned.

Subjectively, when will you feel weak in the affected muscles?

A) 7 to 10 days

B) 10 to 14 days

C) 2 to 3 weeks

D) 3 to 4 weeks

E) Immediately

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This question was created on January 16, 2007 by .
This question was last modified on January 25, 2007.

ANSWERS AND EXPLANATIONS

A) 7 to 10 days

This answer is incorrect.

After an injury which causes destruction of a peripheral nerve or root, loss of function is immediate. The patient will instantly become weak in the affected muscles. (See References)


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B) 10 to 14 days

This answer is incorrect.

After an injury which causes destruction of a peripheral nerve or root, loss of function is immediate. The patient will instantly become weak in the affected muscles. (See References)


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C) 2 to 3 weeks

This answer is incorrect.

After an injury which causes destruction of a peripheral nerve or root, loss of function is immediate. The patient will instantly become weak in the affected muscles. (See References)


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D) 3 to 4 weeks

This answer is incorrect.

After an injury which causes destruction of a peripheral nerve or root, loss of function is immediate. The patient will instantly become weak in the affected muscles. (See References)


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E) immediately

This answer is correct.

After an injury which causes destruction of a peripheral nerve or root, loss of function is immediate. The patient will instantly become weak in the affected muscles. (See References)


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References:

1. Preston, D.C., and Shapiro, B.E. (2005). Electromyography and Neuromuscular Disorders: Clinical-Electrophysiologic Correlations, 2nd Edition. Elsevier, Philadelphia.
2. Guarantors of Brain. (2000). Aids to the Examination of the Peripheral Nervous System, fourth edition. W.B. Saunders, Edinburgh.
3. Moore, K.L. (1992). Clinical Oriented Anatomy, 3rd Edition. Williams & Wilkins, Baltimore.


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pharmacology
Time Course of EMG/NCS Findings
Question ID: 01160700
Question written by . (C) FrontalCortex.com 2006-2009, all rights reserved. Created: 01/16/2007
Modified: 01/25/2007
Estimated Permutations: 0

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