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  • Title: Combination propofol/ketamine is a safe and efficient anesthetic approach to anorectal surgery.
    Author: Sun MY, Canete JJ, Friel JC, McDade J, Singla S, Paterson CA, Counihan TC.
    Journal: Dis Colon Rectum; 2006 Jul; 49(7):1059-65. PubMed ID: 16699969.
    Abstract:
    PURPOSE: Concerns persist regarding respiratory complications from combination deep intravenous sedation and local anesthesia for prone position anorectal surgery. We examined the safety and efficacy of this approach by using a propofol-based and ketamine-based technique. METHODS: A retrospective review was conducted on all patients undergoing anorectal surgery. Outcomes (perioperative times, specific complications) were compared with respect to operative position and anesthetic approach. Significance was determined using Student's t-test and chi-squared analysis. RESULTS: Surgery was performed on 448 patients during a three-year period. There was no significant difference in the two anesthetic groups with regard to age and gender. There were 19 anesthesia-related adverse events occurring in the study group (Monitored Anesthesia Care Group): nausea and vomiting (n = 8), airway obstruction necessitating conversion to general anesthesia (n = 2), excessive pain (n = 2), urinary retention (n = 5), and hospital readmission (n = 2). These occurred in <5 percent of those receiving the combination technique (19/407). Although there was no difference in total procedural time, there was a significant difference in total time spent in the operating room (P = 0.001) and in the hospital overall (P = 0.002). Of the patients receiving combination technique anesthesia, only 31 (7 percent) required the use of the postanesthesia care unit. All patients receiving general anesthesia (n = 23) required the postanesthesia care unit. CONCLUSIONS: Combination deep intravenous sedation with local anesthesia based on propofol and ketamine is a safe and effective technique for prone-position anorectal surgery. It results in decreased use of the postanesthesia care unit and earlier hospital discharge, reflecting a more efficient use of hospital resources.
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