title: [Impact of nocturia on sleep efficiency in patients with benign prostatic hypertrophy].
abstract: OBJECTIVE
  To assess sleep efficiency in patients presenting with nocturia and symptomatic benign prostatic hypertrophy (BPH).
  
  
  METHODS
  This prospective observational survey was carried out in France by 113 urologists. A total of 1376 patients (mean+/-SD age: 68.8+/-9.0 years) consulting for BPH with greater than two nocturia episodes per 24 hours were assessed with a mean I-PSS score of 15.5+/-6.4 (symptoms greater than 19 [severe] in 26.9% of cases). Patients used a sleep diary to record the previous night's total; sleep efficiency is expressed as percentage ratio, representing the total amount of actual sleep between initial sleep onset and final awakening. Sleep disorders were assessed using HD-43 questionnaire based on International classification of sleep disorders.
  
  
  RESULTS
  29.2% of the patients suffered from chronic insomnia, considered as primary insomnia (in 29.5% of cases) or related to either BPH (63.0%); snoring/sleep apnoea in 12.5% of cases. The mean sleep efficiency index was 87.2+/-13.7% and appeared to be significantly lower in BPH-related insomnia. Significantly lower sleep efficiency index values were observed as the severity (I-PSS score) of the BPH symptoms increased (89.5+/-12.1% for mildly symptomatic BPH vs. 84.0+/-15.6% for severely symptomatic BPH, P<0.001). Sleep efficiency index lowered with nocturia frequency (89.8+/-11.3% for two nocturia episodes vs. 80.4+/-17.3% for five nocturia episodes or more, P<0.001) and chronic insomnia frequency increased with nocturia frequency (21.4% for two nocturia episodes vs. 45.2% for five nocturia episodes or more, P<0.001).
  
  
  CONCLUSIONS
  Insomnia is frequent in patients presenting with BPH-related lower urinary tract symptoms (LUTS) and is mainly secondary to these LUTS. There is a significant correlation between the frequency of nocturia and the severity of insomnia.
authors.affiliation: Service d'urologie, faculté de médecine Pierre-et-Marie-Curie, Paris-VI, groupe hospitalier Pitié-Salpêtrière, AP-HP, 83, boulevard de l'Hôpital, 75013 Paris, France.
authors.forename: E
authors.initials: E
authors.lastname: Chartier-Kastler
authors.forename: D
authors.initials: D
authors.lastname: Leger
authors.forename: V
authors.initials: V
authors.lastname: Montauban
authors.forename: D
authors.initials: D
authors.lastname: Comet
authors.forename: F
authors.initials: F
authors.lastname: Haab
mesh_terms: D000368:Aged; D006801:Humans; D008297:Male; D053158:Nocturia / Q000209:etiology*; D011470:Prostatic Hyperplasia / Q000150:complications*; D011788:Quality of Life; D012890:Sleep