Postoperative Sleep Disturbances Role in Cognitive Test Results After Fast-track Hip and Knee Arthroplasty

Postoperative Sleep Disturbances Role in Cognitive Test Results After Fast-track Hip and Knee Arthroplasty

The purpose of this study is to evaluate sleep cycle before and after fast-track arthroplasty (3 days before and 10 days after) combined with cognitive testing preoperatively, on postoperative day 1,2,10.

Inclusion Criteria:

• above 60
• ASA classification I-IV

Exclusion Criteria:

• general anaesthesia within 90 days
• daily use of sedatives, hypnotics og anxiolytics
• alcohol abuse
• insufficient written and verbal Danish
• severe hearing loss and poor sight
• Parkinsons Disease or other functional neurological deficits
• Mini mental status < 24
• Shift work