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23 Cards in this Set
- Front
- Back
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What does the Robinson technique help evaluate what kind of disorder?
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Carpal tunnel
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What does digit I compare?
and what distance is used? |
Median/ Radial SENSORY
10cm |
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What does distance does digit II compare?
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12 cm
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What 2 distance does digit III compare and use?
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7cm and 14 cm
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What does digit IV compare?
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Median/ Ulnar
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What is the final comparison?
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Trans carpal CNAP median/ulnar
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What does the Robinson technique help eliminate?
2 things |
random technical error
2. observation of a extreme value i.e. sensitivity and specificity |
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What is it called when the Robinson technique uses a 3 different tests to develop a single summary variable?
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Combined Sensory Index
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What are the 3 differences measured when comparing the differences between peak latencies?
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Palmdiff
Ringdiff Thumbdiff |
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What does the Palmdiff evaluate?
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median-ulnar midpalmar orthodromic at 8 cm
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What does the Ringdiff evaluate?
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median-ulnar ring finger ANTIDROMIC diff at 14cm
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What does the Thumbdiff evaluate?
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median-radial THUMB finger ANTIDROMIC diff at 10cm
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How do you calculate CSI?
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plamdiff + ringdiff + thumbdiff
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What are the normal values for the plamdiff / ringdiff /thumbdiff
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palmdiff = <or equal to .03 ms
ringdiff = <or equal to .4ms thumbdiff = <or equal to .05 ms |
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Does performing one of three tests or 3 of 3 tests give the greatest specificity?
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3 of 3
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What is thought of the PPV when doing 3 of 3 tests?
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reaches 100 %
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What CSI values correctly identifies non-CTS patients?
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CSI < or equal to 1.1 ms
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When repeating the study and comparing CSI measurments to individual sensory measurements, what did they find?
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CSI produced highest intr-rater reliability
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When is it best to use Robinson technique?
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When the results are btwn. endpoints
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What are the endpoints of the ringdiff, thumbdiff, and palmdiff?
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Ring diff= .1-0.4 ms
Thumbdiff= 0.2-0.6 ms palmdiff = 0.0-0.3 ms |
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What CSI value denotes CTS?
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CSI > or equal to 0.9 ms
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When using teh CSI; if the initial median sensory response is not found; what is best choice for CONFIRM CTS?
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2nd lumbrical interossi
(2L-I) |
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What is the effect of temperature on CSI?
at 32 degrees and at 27 degrees |
ring diff= most reliable
thumb diff--reduced sometimes even to normal palm diff--increased CSI---UNCHNG |
