Maneerat Thananun

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PURPOSE To assess the efficacy of a transdermal fentanyl patch (TFP) (50 μg/hour) applied 10-12 hours before surgery versus placebo for postoperative pain control of total knee arthroplasty (TKA). MATERIALS AND METHODS We enrolled 40 patients undergoing elective TKA under spinal anesthesia using isobaric or hyperbaric bupivacaine. Subjects were randomized(More)
BACKGROUND We propose a 1-1-12 wash-in scheme for desflurane-nitrous oxide (N2O) low-flow anesthesia. The objective of our study was to determine the time to achieve alveolar concentration of desflurane (FAD) at 1, 2, 3, 4, 5, and 6%. METHODS We enrolled 106 patients scheduled for elective surgery under general anesthesia. After induction and intubation,(More)
BACKGROUND The Lack's circuit is a co-axial Mapleson A breathing system commonly used in spontaneously breathing anesthetized adults but still requires high fresh gas flow (FGF). The Lack-Plus circuit was invented with the advantage of lower FGF requirement. The authors compared the Lack-Plus and Lack's circuit for the minimal FGF requirement with no(More)
BACKGROUND We reported a 1-1-12 wash-in scheme for desflurane-nitrous oxide (N2O) low flow anesthesia that is simple, rapid, and predictable. There remain some situations where N2O should be avoided, which limits the generalizability of this wash-in scheme. The objective of our study was to determine the performance of this scheme in contexts where N2O is(More)
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