Based on prior findings concerning sleep disturbances, in particular REM sleep disturbances, after fast-track hip and knee arthroplasty (H-2-2010-011) we performed a supplemental analysis of heart rate variablity after arousals during sleep. We compared preoperative and postoperative results.
Inclusion criteria (for the control group):
Exclusion criteria:
This protocol only concentrates on the healthy controls for the patient described in H-2-2010-011.