title: Sural-to-radial amplitude ratio in the diagnosis of diabetic sensorimotor polyneuropathy.
abstract: In this investigation we measured sural and radial sensory potentials and the sural/radial amplitude ratio (SRAR) in 49 patients with diabetes and diabetic sensorimotor polyneuropathy (DSP) according to consensus criteria. Forty-five (92%) of the patients had a Toronto Clinical Neuropathy Score (TCNS) ≤5, which is consistent with a diagnosis of DSP. Using a threshold for SRAR of <0.21, we found no advantage of using the SRAR over the sural nerve potential amplitude alone in sensitivity for identification of DSP.
authors.affiliation: Division of Neurology, Department of Medicine, University Health Network, 5EC-309, Toronto General Hospital, 200 Elizabeth Street, Toronto, Ontario M5G 2C4, Canada.
authors.forename: Carolina
authors.initials: C
authors.lastname: Barnett
authors.forename: Bruce A
authors.initials: BA
authors.lastname: Perkins
authors.forename: Mylan
authors.initials: M
authors.lastname: Ngo
authors.forename: Slavko
authors.initials: S
authors.lastname: Todorov
authors.forename: Rita
authors.initials: R
authors.lastname: Leung
authors.forename: Vera
authors.initials: V
authors.lastname: Bril
mesh_terms: D000200:Action Potentials / Q000502:physiology; D000293:Adolescent; D000328:Adult; D000368:Aged; D003920:Diabetes Mellitus / Q000503:physiopathology; D003929:Diabetic Neuropathies / Q000175:diagnosis* / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009431:Neural Conduction / Q000502:physiology*; D011826:Radial Nerve / Q000503:physiopathology*; D013497:Sural Nerve / Q000503:physiopathology*; D055815:Young Adult