title: [Prevalence of sleep-disordered breathing in patients with retinal vein occlusion].
abstract: OBJECTIVE
  To investigate the prevalence of sleep-disordered breathing (SDB) in retinal vein occlusion (RVO) patients.
  
  
  METHODS
  Forty RVO patients who had undergone either vitreous surgery or anti-coagulation therapy were included in this study. Pulse oximetry was conducted during the night and 4% oxygen desaturation index (4% ODI times/hour) and mean SpO2 (%) were calculated. If 4% ODI > or = 5, SDB was diagnosed. The results were compared between branch retinal vein occlusion (BRVO), and central retinal vein occlusion (CRVO). In addition, simple linear regression analyses were conducted to investigate whether 4% ODI related to systemic factors for RVO patients, i.e., incidences of hypertension and diabetes and body mass index(BMI kg/m2).
  
  
  RESULTS
  Forty two percent of the men, 33% of the women and 37% of all the RVO patients were diagnosed as having SDB. The prevalence of SDB and 4% ODI, and the mean SpO2 were not significantly different between the BRVO and CRVO cases. The incidences of diabetes tended to correlate to the 4% ODI, however, neither proved significant. The BMI had a statistic correlation with the 4% ODI.
  
  
  CONCLUSIONS
  The results of our study suggested that RVO cases have a high frequency of SDB. We believe that at the time of ophthalmic medical examinations or during the treatment of RVO, ophthalmologists should be aware of the possibility of SDB.
authors.affiliation: Department of Ophthalmology, Toho University Sakura Medical Center, Japan. hidehito.kanai@med.toho-u.ac.jp
authors.forename: Hidehito
authors.initials: H
authors.lastname: Kanai
authors.forename: Tomoaki
authors.initials: T
authors.lastname: Shiba
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Hori
authors.forename: Yoshitsugu
authors.initials: Y
authors.lastname: Saishin
authors.forename: Takatoshi
authors.initials: T
authors.lastname: Maeno
authors.forename: Mao
authors.initials: M
authors.lastname: Takahashi
mesh_terms: D000367:Age Factors; D000368:Aged; D015992:Body Mass Index; D003920:Diabetes Mellitus; D005260:Female; D006801:Humans; D006973:Hypertension; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012169:Retinal Vein; D012170:Retinal Vein Occlusion / Q000150:complications* / Q000453:epidemiology*; D012737:Sex Factors; D020181:Sleep Apnea, Obstructive / Q000150:complications* / Q000453:epidemiology*