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  • Title: [Implementation of new standards in anaesthesia. Exemplified by the ad hoc introduction of desflurane in 10 German hospitals].
    Author: Eberhart LH, Gerlach H, Knaber R, Koch T, Morin AM, Röhr F, Wagner S, Wulf H, Zoremba M.
    Journal: Anaesthesist; 2011 Jan; 60(1):39-48. PubMed ID: 21063671.
    Abstract:
    BACKGROUND: According to numerous pharmacoeconomic studies new anaesthesia techniques can improve recovery times and thus can have a positive economic impact on patient turnover. However, artificial study protocols do not always match real world situations and thus the practical impact of such studies remains unclear. MATERIAL AND METHODS: At 10 hospitals exclusively using sevoflurane as a volatile anaesthetic, the ad hoc implementation of desflurane was studied with respect to post-anaesthetic recovery times (primary endpoint) and postoperative outcome measured by the Quality of Recovery Score- (QoR-)40, on the first postoperative day was investigated. Randomization of patients undergoing elective surgical procedures under general anaesthesia with sevoflurane (n=186) or desflurane (n=176) was started immediately after a period of a few days after introducing the new drug to all participants. Except for the volatile anaesthetic the anaesthetic procedure was performed according to local standing operating procedures. RESULTS: All parameters indicating the immediate postanaesthetic recovery were superior in the patients receiving desflurane (mean±SD). Time to extubation was accelerated from 8.7±9.7 to 6.2±6.8 min. Times to recalling name and date of birth were accelerated by 2.6 and 3.8 min, respectively. Transferring the patients from the operating theatre to the post-anaesthetic recovery unit was 17.3±11.5 min after sevoflurane and 13.7±7.8 min after anaesthesia with desflurane. Eligibility for discharge according to a modified Aldrete score (White and Song 1999) was reached after 103±98 and 79±76 min, respectively. The postoperative recovery (QoR 40 questionnaire) did not differ 24 h later. DISCUSSION: The implementation of a new drug (here: desflurane to substitute sevoflurane) can improve speed of recovery immediately after termination of anaesthesia even after a very short period of introducing the new technique but has no positive long term effects. Thus, the results of this trial performed under a real world scenario (health service research) without tight standardization by an artificial study protocol supports the results originating from randomized controlled clinical trials.
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