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학술저널
저자정보
이재우 (을지대학교 의과대학 을지병원 마취통증의학교실) 강효석 (을지대학교) 백승민 (을지대학교 의과대학 을지병원 마취통증의학교실) 박혜진 (을지대학교 의과대학 을지병원 마취통증의학과) 임태하 (을지대학교)
저널정보
대한마취통증의학회(구 대한마취과학회) Anesthesia and Pain Medicine Anesthesia and Pain Medicine Vol.10 No.3
발행연도
2015.1
수록면
196 - 202 (7page)

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Background: Postoperative cognitive dysfunction (POCD) is a common perioperative complication. The definitive causes of POCD have not been identified, but depth of anesthesia or sedation has been reported to influence POCD. The purpose of the present study was to assess the possible effect of the level of sedation on POCD at 1 week after surgery under spinal anesthesia in elderly patients. Methods: We included 48 patients aged over 60 years, who were scheduled for elective knee and hip joint surgery under spinal anesthesia. Those patients were randomly allocated to one of the 2 groups: deep sedation group and light sedation group. The depth of sedation was monitored by entropy and observer’s assessment of alertness/sedation (OAA/S) score. Cognitive function was assessed by 5 neurocognitive tests before and at 1 week after surgery. A postoperative deficit was defined as a postoperative decrement to preoperative score greater than 1 standard deviation on any test. A patient whose postoperative performance deteriorated by 1 or more standard deviations on 2 or more tests was classified as having experienced POCD. Results: POCD occurred in 7 patients (28%) in the deep sedation group and in 4 patients (17.4%) in the light sedation group. The incidence of the POCD was not significantly different between the 2 groups. Conclusions: We were unable to detect a significant association between the depth of sedation and the presence of POCD at 1 week after surgery under spinal anesthesia.

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