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Related Experiment Video

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Investigating Pain-Related Avoidance Behavior using a Robotic Arm-Reaching Paradigm
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Factors influencing aversion to specific electrodiagnostic studies.

Nivedita U Jerath1, Scott B Strader1, Chandan G Reddy2

  • 1Department of Neurology, Carver College of Medicine, The University of Iowa Iowa City, Iowa, USA.

Brain and Behavior
|October 21, 2014
PubMed
Summary
This summary is machine-generated.

Nerve conduction studies (NCS) are more uncomfortable than needle electromyography (EMG) for most patients. Patient age, BMI, and number of nerves tested can predict discomfort levels during these electrodiagnostic tests.

Keywords:
Aversionelectrodiagnostic studieselectromyographymusclenervenerve conduction studiespain

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Area of Science:

  • Neurology
  • Clinical Neurophysiology

Background:

  • Nerve conduction studies (NCS) and needle electromyography (EMG) are common electrodiagnostic tests.
  • Patient-reported discomfort is a significant factor in test tolerance.

Purpose of the Study:

  • To compare the discomfort levels between NCS and needle EMG.
  • To identify predictors of discomfort for each test.

Main Methods:

  • 200 patients completed both NCS and needle EMG.
  • Patients indicated which test was more uncomfortable.
  • Responses were correlated with demographic, clinical, and testing variables.

Main Results:

  • 58.5% of patients reported NCS as more uncomfortable than EMG.
  • Older patients and those with higher BMIs were more likely to find NCS uncomfortable.
  • Younger patients and those with lower BMIs were more likely to find EMG uncomfortable.
  • Increased number of nerves tested correlated with higher NCS discomfort.

Conclusions:

  • NCS is generally perceived as more uncomfortable than needle EMG.
  • Predictive factors for discomfort exist, aiding in patient preparation and management.