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  • Title: Task analysis of the preincision period in a pediatric operating suite: an independent observer-based study of 656 cases.
    Author: Saadat H, Escobar A, Davis EA, Ehrenwerth J, Watrous G, Fisch GS, Kain ZN, Barash PG.
    Journal: Anesth Analg; 2006 Oct; 103(4):928-31. PubMed ID: 17000806.
    Abstract:
    We designed this cross-sectional investigation to assess anesthesia release time (ART = patient-on-table until release for surgical preparation) and surgical preparation time (start of surgical preparation to incision) of children undergoing anesthesia and surgery (n = 656). Data collected by trained independent observers included variables such as age, ASA physical status, anesthetic technique, and placement of invasive monitoring. We found that mean ART was 11.0 +/- 9.7 min and the mean surgical preparation time was 11.1 +/- 10.0 min. Also, ART ranged from 7 +/- 7 min (for mask anesthesia) to 52 +/- 18 min (general anesthesia/endotracheal tube and invasive hemodynamic monitoring). The percentage of ART of the total case length was 15% +/- 7%, with a wide variability depending on the total case length. We also found that there is a significant variability in ART as a function of the surgical service involved (analysis of variance; P = 0.0001), ASA physical status (P = 0.0001), and age. For example, younger children had a significantly longer ART as compared with older children (P = 0.001). Room coverage ratio by the attending anesthesiologist and training level of the anesthesia resident did not impact ART (P = not significant). We conclude that ART in children undergoing surgery is highly variable and is a function of factors such as the surgical service involved, age of the child, and ASA physical status of the child. These factors should be considered when scheduling a surgical case.
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