title: [Polyneuropathy in patients with periodic leg movements during sleep].
abstract: BACKGROUND
  Periodic legs movements of sleep (PLMS) are rhythmic, standard and repetitive contractions of muscles of the extremities during the sleep. It is known that the patients with restless legs syndrome (RLS) have disorders during the sleep: increase in the latency of the sleep, increased number of arousal, etc.; most of them have also periodic movements of the legs during the sleep.
  
  
  OBJECTIVE
  The relationship of the periodic movements of the legs during the sleep with polyneuropathy is not clear. Some authors have found evidence of electrophysiological and pathological of signs of axonal mild polyneuropathy in patients with restless legs syndrome. In this work, we evaluated nine patients that were diagnosed of PLMS, to determine the prevalence of neuropathy in such sample.
  
  
  METHODS
  Polysomnography of nocturnal sleep of 7-8 hours was performed, including electromyographic recording of both anterior tibialis muscles; and electroneurographic study of peroneal, sural, ulnar and median nerves.
  
  
  CONCLUSIONS
  Just in none of the nine studied cases were obtained electrophysiological signs of neuropathy; though it has been able to demonstrate the existence of mild alteration of the peripheral nervous system, fundamentally of sensory character; nevertheless, C we think that it would have to be studied the existence of polyneuropathy in all the patients with PLMS in order to discard potentially tractable organic causes.
authors.affiliation: Servicio de Neurofisiología Clínica, Hospital Ramón y Cajal, Madrid, España.
authors.forename: J M
authors.initials: JM
authors.lastname: Martínez-Mena
authors.forename: J
authors.initials: J
authors.lastname: Pastor
mesh_terms: D000328:Adult; D000368:Aged; D000747:Anemia, Hypochromic / Q000150:complications; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009069:Movement Disorders / Q000209:etiology / Q000503:physiopathology*; D009431:Neural Conduction; D010507:Periodicity; D010523:Peripheral Nervous System Diseases / Q000175:diagnosis / Q000503:physiopathology*; D017286:Polysomnography; D012894:Sleep Stages; D012893:Sleep Wake Disorders / Q000209:etiology / Q000503:physiopathology*; D013577:Syndrome
vernacular_title: Estudio de polineuropatía en pacientes con movimientos periódicos de las piernas durante el sueño.