title: [The predictive value of Holter recordings to detect moderate-severe obstructive sleep apnea syndrome].
abstract: OBJECTIVE
  To evaluate the predictive value of Holter ECG recordings for patients with moderate-severe obstructive sleep apnea and hypopnea syndrome (OSAHS).
  
  
  METHODS
  Holter recordings was performed in 76 patients who were diagnosed OSAHS by polysomnography (PSG) within one month from Jan. 2008 to July 2009 in our hospital. Twenty-eight patients were identified as mild OSAHS (AHI < or = 20) and forty-eight patients were moderate-to-severe OSAHS (AHI > 20). The indexes of heart rate variability (HRV), total scores of thirteen sleep apnea risk indexes of Holter recordings and BMI were analyzed by bivariate Logistic regression analysis.
  
  
  RESULTS
  Clinical features (eg. Gender, age, complicated with hypertension, coronary heart disease, diabetes mellitus, hyperglycemia, and taken beta-blocker), total scores, the sum of thirteen sleep apnea risk scores collected by Holter recordings (5.64 + or - 2.33 vs. 6.42 + or - 2.22, respectively, P > 0.05) were similar between patients with mild OSAHS and moderate-to-severity OSAHS. VLF/Total Power > 70%, the difference of daytime/nighttime LF Power < -70 and BMI were independent predictors of moderate-to-severe OSAHS with OR 3.98 (1.087 - 14.596), 3.69 (1.106 - 12.285) and 1.28 (1.062 - 1.544), respectively (all P < 0.05).
  
  
  CONCLUSIONS
  VLF/Total Power and the difference of daytime/nighttime LF Power and BMI could be used as screening parameters to recognize patients with moderate-to-severe OSAHS.
authors.affiliation: Department of Geriatrics, Peking University First Hospital, Beijing 100034, China.
authors.forename: Hong-mei
authors.initials: HM
authors.lastname: Jiao
authors.forename: Mei-lin
authors.initials: ML
authors.lastname: Liu
authors.forename: Zhi-gang
authors.initials: ZG
authors.lastname: Zhang
authors.forename: Xue-ru
authors.initials: XR
authors.lastname: Feng
authors.forename: Yan
authors.initials: Y
authors.lastname: Chen
authors.forename: Xue-ying
authors.initials: XY
authors.lastname: Li
mesh_terms: D000368:Aged; D015716:Electrocardiography, Ambulatory; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D020181:Sleep Apnea, Obstructive / Q000175:diagnosis* / Q000503:physiopathology*