title: [The reason analysis of the multilead-sleep monitor to fail].
abstract: OBJECTIVE
  To investigate the reason of failure and error in sleeping monitoring.
  
  
  METHODS
  In 221 sufferers, who were doubted about sleep apnea syndrome proceed multilead-sleep monitor. There are 31 cases failure. This article studys multilead-sleep monitoring subjective factors and objectivity factors, and its causing monitor with the reason of the error or failure, the sufferers obey to be checked agreeably about the element which proceed single factor regression analysis and partial to the correlation analysis.
  
  
  RESULTS
  The sleep monitors to fail which reason main 6 kinds of instance in list, the remedial measure is introduced about each instance. The sufferer obeys to be checked that concern: monthly pay, business, culture degree, SaO2 < or = 85% time share in sleep percentage, sex. The first 4 causes are linear with detection time.
  
  
  RESULTS
  For leads the detection to succeed once, should keep firmly in mind the familiar failure reason, distinguishes the point which is emphases, to the patient stronger leads complete conjunction, the other way round. Leads should reduce to 5 at lowest.
authors.affiliation: Department of Otorhinolaryngology, Guangzhou Ear Nose Throat Neck Surgery Hospital, Guangzhou, 510620, China.
authors.forename: Haoliang
authors.initials: H
authors.lastname: Zhang
authors.forename: Feng
authors.initials: F
authors.lastname: Yu
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D017286:Polysomnography / Q000706:statistics & numerical data*