Fig. 2From: Dexmedetomidine nasal administration improves perioperative sleep quality and neurocognitive deficits in elderly patients undergoing general anesthesiaSleep quality scores of subjects in the three groups (A Comparison of preoperative sleep quality scores among the three groups; B Comparison of sleep quality scores among the three groups one day after surgery; C Comparison of sleep quality scores among the three groups three days after surgery; D Comparison of sleep quality scores among the three groups five days after surgery)Back to article page