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Ziegler, D.* ; Papanas, N.* ; Rathmann, W.* ; Heier, M. ; Scheer, M.* ; Meisinger, C.

Evaluation of the Neuropad sudomotor function test as a screening tool for polyneuropathy in the elderly population with diabetes and pre-diabetes: The KORA F4 survey.

Diabetes Metab. Res. Rev. 28, 692-697 (2012)
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Background Neuropad is a novel indicator test for sudomotor dysfunction, which has not been validated as a screening tool in a population-based study. This study aimed to evaluate the utility of Neuropad as a screening tool for distal symmetric polyneuropathy among elderly subjects with diabetes and pre-diabetes in the general population. Methods Eligible subjects aged 61-82 years (n = 940) from the KORA F4 survey were examined, 201 of whom had diabetes and 231 had pre-diabetes (WHO 1999 criteria). Polyneuropathy was defined by the Michigan Neuropathy Screening Instrument (MNSI) score >3. Results Polyneuropathy was diagnosed in 60 (29.9%) subjects with diabetes and in 45 (19.5%) subjects with pre-diabetes, respectively (p = 0.013). The sensitivity and negative predictive value of Neuropad (reading time: 10 min) for the diagnosis of polyneuropathy were moderately high, reaching 76.7% and 78.1% in subjects with diabetes and 57.8% and 76.5% in those with pre-diabetes, respectively. Conversely, the specificity and positive predictive value for the diagnosis of polyneuropathy were rather low: 35.5% and 33.6% in diabetic individuals and 33.3% and 17.3% in subjects with pre-diabetes, respectively. Use of the >2 cut-off and MNSI combined with monofilament examination did not improve the diagnostic performance of Neuropad. Conclusions In the elderly general population with diabetes and pre-diabetes, Neuropad has reasonable sensitivity but rather low specificity for the diagnosis of polyneuropathy. It is a useful simple and inexpensive tool to screen for and to exclude polyneuropathy as desired, while its low specificity implies that a longer reading time merits consideration.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Diabetic Polyneuropathy ; Pre-diabetes ; Sudomotor Dysfunction; Indicator Test Neuropad(r) ; Augsburg Surveys S2 ; Peripheral Neuropathy ; Clinical Examination ; Glucose-tolerance ; Diagnostic-tool ; Threshold ; Prevalence ; Mellitus ; Pain
ISSN (print) / ISBN 1520-7552
e-ISSN 1520-7560
Quellenangaben Volume: 28, Issue: 8, Pages: 692-697 Article Number: , Supplement: ,
Publisher Wiley
Reviewing status Peer reviewed