title: Association between clinical condition and F-waves changes in the acute phase of stroke.
abstract: OBJECTIVE
  To relate F-waves with clinical and laboratory exams in the acute phase of stroke.
  
  
  METHODS
  Inclusion criteria for this cross-sectional study were: hemiplegia, absence of previous cranial trauma, myopathy, diabetes, alcoholism or other known causes of peripheral neuropathy, and normal sensory and motor conduction. The National Institutes of Health Stroke Scale (NIHSS) score, glycemia, glucosilate hemoglobin, and CPK were obtained at admission by routine blood exams. After hospital admission, the F-wave latencies and persistence were obtained from the deep peroneal nerve using symmetrical techniques.
  
  
  RESULTS
  Evaluation of 20 individuals - mean age 66 years, 50% male and 85% Caucasian - showed association of F-wave persistence with glycemia (r = 0.71; p < 0.001) and NIHSS categorized (NIHSS 1-7 = 65.0 x NIHSS 9-23 = 100; p = 0.004). Multivariate analysis found only association of F-wave persistence with glycemia β = 0.59 (0.44-0.74); p < 0.001.
  
  
  CONCLUSIONS
  The increase in the persistence of F-waves are associated with hyperglycemia in the acute phase of stroke.
authors.affiliation: Universidade Estadual Paulista, Faculdade de Medicina de Botucatu, Serviço de Neurologia, Botucatu SP, Brasil.
authors.forename: Gustavo José
authors.initials: GJ
authors.lastname: Luvizutto
authors.affiliation: Universidade Estadual Paulista, Faculdade de Medicina de Botucatu, Serviço de Neurologia, Botucatu SP, Brasil.
authors.forename: Marcelo Fernando Zeugner
authors.initials: MF
authors.lastname: Bertotti
authors.affiliation: Universidade Estadual Paulista, Faculdade de Medicina de Botucatu, Serviço de Neurologia, Botucatu SP, Brasil.
authors.forename: Thiago Dias
authors.initials: TD
authors.lastname: Fernandes
authors.affiliation: Universidade Estadual Paulista, Faculdade de Medicina de Botucatu, Serviço de Neurologia, Botucatu SP, Brasil.
authors.forename: Hélio Rubens de Carvalho
authors.initials: HR
authors.lastname: Nunes
authors.affiliation: Universidade Estadual Paulista, Faculdade de Medicina de Botucatu, Serviço de Neurologia, Botucatu SP, Brasil.
authors.forename: Gabriel Pereira
authors.initials: GP
authors.lastname: Braga
authors.affiliation: Universidade Estadual Paulista, Faculdade de Medicina de Botucatu, Serviço de Neurologia, Botucatu SP, Brasil.
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Bazan
authors.affiliation: Universidade Estadual Paulista, Faculdade de Medicina de Botucatu, Serviço de Neurologia, Botucatu SP, Brasil.
authors.forename: Luiz Antônio de Lima
authors.initials: LA
authors.lastname: Resende
mesh_terms: D000328:Adult; D000368:Aged; D001786:Blood Glucose / Q000032:analysis; D058256:Brain Waves / Q000502:physiology*; D003430:Cross-Sectional Studies; D022062:Electrophysiologic Techniques, Cardiac; D005260:Female; D006801:Humans; D006943:Hyperglycemia / Q000503:physiopathology; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D010543:Peroneal Nerve / Q000503:physiopathology; D012720:Severity of Illness Index; D018709:Statistics, Nonparametric; D020521:Stroke / Q000503:physiopathology*; D013997:Time Factors
chemical_list: D001786:Blood Glucose