3Kallela H, Haasio J, Korttila K. Comparison of eltanolone and propofol in anesthesia for termination of pregnancy. AnesthAnalg, 1994,79 : 512-516.
4Lindholm P, Hellbo-Hansen HS,Jensen B, et al. Effects of fen- tayl or alfentanil as supplement to propofol anaesthesia for ter- mination of pregnancy. Acta Anaesthesiol Scand, 1994,38 : 545- 549.
5Gharagozlou P, Hashemi E, Delorey TM, et al. Pharmacological profiles of opioid ligands at kappa opioid receptors. BMC Phar- macol, 2006,6: 3.
6Novaes MA, Knobel E, Bork AM, et al. Stressors in ICU: perception of the patient, relatives and health care team[J]. Intensive Care Med, 1999,25 (12) : 1421-1426.
7Epstein J,Breslow MJ. The stress response of critical illness [J]. Crit Care Clin,1999,15(1) :17-33.
8Schelling G, Stoll C,Haller M,et al. Health-related quality of lift and post-traumatic stress disorder in survivors of the acute respiratory distress syndrome[J]. Crit Care Med, 1998, 26(4):651-659.
9Wagner BK,O'Hara DA,Hammond JS. Drugs for amnesia in the ICU[J]. Am J Crit Care,1997,6(3):192-201.
10Fraser GL,Riker RR,Prato BS,et al. The frequency and cost of patient-initiated device removal in the ICU [J]. Pharmacotherapy, 2001,21 (1) : 1-6.