Variability of pudendal and median nerve sensory perception thresholds in healthy persons

E-ISSN： 1520-6777|34|4|327-331

ISSN： 0733-2467

Source： NEUROUROLOGY AND URODYNAMICS, Vol.34, Iss.4, 2015-04, pp. : 327-331

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Abstract

BackgroundNormative current perception thresholds (CPTs) are used for the evaluation of sensory function in a variety of diseases.AimsTo evaluate the reproducibility of CPT measurements with sinusoidal current in healthy volunteers.MethodsNeuroselective CPT evaluations of the median and pudendal nerve in healthy volunteers were repeated with 1 week interval (T1 and T2).ResultsIn the study group (N = 41) no difference between genders for age (MW‐U: P = 0.91) and BMI (t‐test: P = 0.18) were found. No significant difference between T1 and T2 was found (Paired t‐test: all P‐values > 0.05), although the intraclass correlation for each person was low. The variability of measures for the pudendal nerve was: ICC 2 kHz: 0.41; 250 Hz: 0.30; 5 Hz: 0.38, and for the median nerve respectively: 0.58; 0.46; 0.40. Normal CPTs were shown for the pudendal nerve: 2 kHz: 51%; 250 Hz: 76%; 5 Hz: 71%, and median nerve respectively: 78%; 98%; 80%. The pudendal nerve showed more deviating values compared to the median nerve.ConclusionBoth nerves showed deviating values. CPT values with sinusoidal current assessed with 1 week interval, showed a weak intraclass correlation. This finding limits the use of CPT values with this current for longitudinal studies. Neurourol. Urodynam. 34:327–331, 2015. © 2014 Wiley Periodicals, Inc.