title: Preoperative sleep complaints are associated with poor physical recovery in the months following cardiac surgery.
abstract: BACKGROUND
  Sleep disturbance is associated with poorer outcomes in cardiac patients, but little is known about the independent role of sleep quality in coronary artery bypass graft (CABG) patients.
  
  
  OBJECTIVE
  This study aims to examine the relationship between preoperative sleep complaints and post-operative emotional and physical recovery in CABG surgery patients, independently of demographic, clinical and mood factors.
  
  
  METHODS
  Two hundred thirty CABG patients (aged 67.81 ± 9.07 years) completed measures of self-reported sleep complaints before surgery and health-related quality of life (HRQoL), physical symptoms and pain 2 months after surgery.
  
  
  RESULTS
  Greater sleep complaints prior to surgery were associated with greater physical symptoms, poorer physical HRQoL and greater sensory pain after surgery (p < 0.05), but not with affective pain or mental HRQoL. Preoperative mood was not able to explain these associations.
  
  
  CONCLUSIONS
  Sleep complaints may be implicated in physical recovery from CABG surgery but further work is needed to understand the role of causal pathways.
authors.affiliation: Department of Epidemiology and Public Health, University College London, 1-19 Torrington Place, London, WC1E 6BT, UK, lydia.poole.09@ucl.ac.uk.
authors.forename: Lydia
authors.initials: L
authors.lastname: Poole
authors.forename: Tara
authors.initials: T
authors.lastname: Kidd
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Leigh
authors.forename: Amy
authors.initials: A
authors.lastname: Ronaldson
authors.forename: Marjan
authors.initials: M
authors.lastname: Jahangiri
authors.forename: Andrew
authors.initials: A
authors.lastname: Steptoe
mesh_terms: D000339:Affect; D000368:Aged; D001026:Coronary Artery Bypass / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D010146:Pain / Q000150:complications / Q000523:psychology; D011183:Postoperative Complications / Q000503:physiopathology* / Q000523:psychology*; D011184:Postoperative Period; D057234:Preoperative Period; D011446:Prospective Studies; D011788:Quality of Life / Q000523:psychology*; D057566:Self Report; D012893:Sleep Wake Disorders / Q000503:physiopathology* / Q000523:psychology*; D063189:Symptom Assessment / Q000523:psychology; D016896:Treatment Outcome