• Nicolás Lorenzini, Claudio Díaz, and Tamara Quintana.
• Centro de Salud Familiar María Latife Saadi, Corporación Municipal de Rancagua, Chile Universidad Católica del Maule, Chile.
• Rev Med Chil. 2020 Jan 1; 148 (1): 54-59.

BackgroundSudomotor dysfunction may appear in early stages of diabetic neuropathy.AimTo evaluate the diagnostic capacity of the Neuropad test, based on the detection of sudomotor dysfunction, as an early indicator of diabetic neuropathy.Material And MethodsIn Forty-two type 2 diabetic patients, the Neuropad test was compared with the 10 g monofilament test (proposed in the technical orientation of diabetic foot of the Ministry of Health of Chile), deep and thermal sensitivity.ResultsThe surface sensitivity assessed with a brush had a sensitivity and specificity of 18.8 and 100% respectively when compared with the 10 g monofilament. When compared with the Neuropad, the figures were 9 and 100%, respectively. Pain perception sensitivity and specificity were 13 and 100% respectively when compared with the 10 g monofilament. The figures were 6 and 100%, when compared with the Neuropad. Thermal discrimination had a sensitivity and specificity of 88 and 33% respectively when compared with the 10 g monofilament. The figures were 75 and 25% respectively when compared with the Neuropad. The deep sensitivity evaluated with a 128 Hz tuning fork had a sensitivity and specificity of 31 and 100% respectively when compared with the 10 g monofilament. The figures were 16 and 31% respectively when compared with the Neuropad. The Neuropad had a sensitivity and specificity of 94 and 29% respectively were compared with the 10 g monofilament.ConclusionsNeuropad had a good diagnostic yield for the early detection of sudomotor dysfunction.

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