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Motor nerve conduction study normal values

Topic: Pharmacology

Created on Thursday, July 6 2006 by

Last modified on Wednesday, December 31 1969.

You are performing a motor nerve conduction test on an adult.
You are testing the ulnar nerve, recording at the first dorsal interosseous muscle.
What is the normal value for the distal latency?



 
        A) 8 ms
 
        B) 2 ms
 
        C) 2.8 ms
 
        D) 4.5 ms
 
        E) 8.8 ms
 

 


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This question was created on July 06, 2006 by .
This question was last modified on December 31, 1969.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS




A) 8 ms

This answer is incorrect.


When performing a motor nerve conduction test on the ulnar nerve, testing at the first dorsal interosseous, the normal distal latency is 4.5 ms.  (See References)

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B) 2 ms

This answer is incorrect.


When performing a motor nerve conduction test on the ulnar nerve, testing at the first dorsal interosseous, the normal distal latency is 4.5 ms.  (See References)

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C) 2.8 ms

This answer is incorrect.


When performing a motor nerve conduction test on the ulnar nerve, testing at the first dorsal interosseous, the normal distal latency is 4.5 ms.  (See References)

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D) 4.5 ms

This answer is correct.


When performing a motor nerve conduction test on the ulnar nerve, testing at the first dorsal interosseous, the normal distal latency is 4.5 ms.  (See References)

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E) 8.8 ms

This answer is incorrect.


When performing a motor nerve conduction test on the ulnar nerve, testing at the first dorsal interosseous, the normal distal latency is 4.5 ms.  (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. Pp. 663-666.
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pharmacology
Motor nerve conduction study normal values
Question ID: 707200601
Question written by . (C) FrontalCortex.com 2006-2009, all rights reserved. Created: 07/06/2006
Modified: 12/31/1969
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