Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards
share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

SEP interpretation

Somatosensory EP interpretation

QuestionAnswer
Absence of all waves Peripheral nerve lesion, rule out technical problem
Absent EP with normal P14 and N20 Normal
Increased EP latency with equally increased P14 and N20 latencies; decreased peripheral nerve conduction velocity with normal central conduction time Peripheral nerve lesion, rule out technical problem
Increased clavicular-spinal conduction time with normal peripheral conduction and normal cervical-scalp conduction time Defect between the brachial plexus and the lower medulla
Absent cervical potential and abent or delayed scalp potential Defect between the brachial plexus and the somatosensory cortex
Increased cervical-scalp central conduction time with normal peripheral conduction and normal clavicular-cervical potential Defect above the lower medulla at or below the somatosensory cortex
Absent scalp potential with normal peripheral conduction and normal clavicular-cervical conduction time Defect between the lower medulla and the somatosensory cortex
Decreased peripheral conduction velocity and increased central conduction time Combination of peripheral nerve lesion and central defect
Increased latency of all SEPs at all levels Hypothermia; inaccurate measurement of distance between stimulating and recording electrodes
Created by: schmittse