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    The effects of intravenous lignocaine on depth of anaesthesia and intraoperative haemodynamics during open radical prostatectomy.

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    Author
    Weinberg, L; Jang, J; Rachbuch, C; Tan, C; Hu, R; McNicol, L
    Date
    2017-07-06
    Source Title
    BMC Research Notes
    Publisher
    Springer Science and Business Media LLC
    University of Melbourne Author/s
    Hu, Raymond; Weinberg, Laurence
    Affiliation
    Surgery (Austin & Northern Health)
    Medicine and Radiology
    Metadata
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    Document Type
    Journal Article
    Citations
    Weinberg, L., Jang, J., Rachbuch, C., Tan, C., Hu, R. & McNicol, L. (2017). The effects of intravenous lignocaine on depth of anaesthesia and intraoperative haemodynamics during open radical prostatectomy.. BMC Res Notes, 10 (1), pp.248-. https://doi.org/10.1186/s13104-017-2570-4.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/254687
    DOI
    10.1186/s13104-017-2570-4
    Open Access at PMC
    http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5501521
    Abstract
    BACKGROUND: Lignocaine is a local anaesthetic agent, which is also commonly used as a perioperative analgesic adjunct to accelerate rehabilitation and enhance recovery after surgery. Lignocaine's systemic effects on intraoperative haemodynamics and volatile anaesthetic requirements are not well explored. Therefore, we evaluated the effects of intravenous lignocaine on intraoperative volatile agent requirements and haemodynamics in patients undergoing major abdominal surgery. METHODS: We performed an analysis of 76 participants who underwent elective open radical retropubic prostatectomy. Patients received lignocaine (1.5 mg/kg loading dose) followed by an infusion (1.5 mg/kg/h) for the duration of surgery, or saline at an equivalent rate. The aims of the study were to evaluate the end-tidal sevoflurane concentration required to maintain a bispectral index of between 40 and 60. Measurements included intraoperative blood pressure, heart rate, and the volume of intravenous fluids and dosage of vasoactive medications administered. RESULTS: The average end-tidal sevoflurane concentration was lower in the Lignocaine group compared to saline [1.49% (SD: 0.32) vs. 1.89% (SD: 0.29); 95% CI 0.26-0.5, p < 0.001]. In the Lignocaine group, the average mean arterial pressure was 80.3 mmHg (SD: 4.9) compared to 85.1 mmHg (SD: 5.4) in the Saline group (95% CI 2.4-7.1, p < 0.001). Systolic blood pressure was also lower in the Lignocaine group: 121.7 mmHg (SD: 6.1) vs. 128.0 mmHg (SD: 6.4) in the Saline group; 95% CI 3.5-9.2, p < 0.001, as was the mean heart rate [Lignocaine group: 74.9 beats/min (SD: 1.8) vs. 81.5 beats/min (SD: 1.7) in the Saline group, 95% CI 4.1-9.1, p < 0.001]. Maintenance fluid requirements were higher in the Lignocaine group: 3281.1 mL (SD: 1094.6) vs. 2552.6 mL (SD: 1173.5) in the Saline group, 95% CI 206-1251, p = 0.007. There were no differences in the use of vasoactive drugs. CONCLUSIONS: Intravenous lignocaine reduces volatile anaesthetic requirements and lowers blood pressure and heart rate in patients undergoing open radical prostatectomy.

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