Prevalence of Sleep Apnea in Patients Presenting for Hip or Knee Replacement Surgery
The study hypothesis is that the prevalence of obstructive sleep apnea in patients presenting for total knee or total hip arthroplasty is higher than generally suspected. The study will include just one arm and results will be compared to a literature control group. Patients refered for preoperative evaluation will be screened using a standard questionnaire. Those at high risk of obstructive sleep apnea will then undergo a formal overnight sleep study (polysomnography).
Sleep Apnea, Obstructive
|Study Design:||Time Perspective: Retrospective|
|Official Title:||Prevalence of Sleep Apnea in Patients Presenting for Hip or Knee Replacement Surgery|
- Obstructive Sleep Apnea [ Time Frame: 9 Months ] [ Designated as safety issue: Yes ]The number patients with obstructive sleep apnea whether newly diagnosed or known at study entry.
|Study Start Date:||September 2008|
|Study Completion Date:||June 2009|
|Primary Completion Date:||June 2009 (Final data collection date for primary outcome measure)|
Patients diagnosed with obstructive sleep apnea by polysomnography after being screened with the Berlin questionnaire.
All patients seen by academic orthopedic surgeon for total hip or total knee arthroplasty are referred for preoperative evaluation. The historical control group comes from a study performed by Harrison et al. and published in the December 2003 issue of The Journal of Arthroplasty. The Berlin questionnaire is being used for screening.
|United States, Nebraska|
|University of Nebraska Medical Center|
|Omaha, Nebraska, United States, 68198-3331|
|Principal Investigator:||Jason F Shiffermiller, MD||University of Nebraska|