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Pubmed for Handhelds

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  • Title: Effects of target-controlled anesthesia with propofol and sufentanil on the hemodynamic response to Mayfield head holder application.
    Author: Hans P, Coussaert E, Cantraine F, Dewandre PY, Brichant JF, Grevesse M, Lamy M.
    Journal: Acta Anaesthesiol Belg; 1998; 49(1):7-11. PubMed ID: 9627732.
    Abstract:
    The effects of target-controlled anesthesia with propofol and sufentanil on the hemodynamic response to Mayfield head holder (MH) application were evaluated in 18 ASA I and II patients undergoing scheduled intracranial surgery. Premedication consisted of hydroxyzine, alprazolam and atropine given orally 1 h before surgery. Anesthesia was provided with propofol and sufentanil using a target-controlled infusion device; constant calculated plasma concentrations of 4 micrograms ml-1 propofol and 0.5 ng ml-1 sufentanil were maintained throughout the study. Muscle relaxation was obtained with atracurium and ventilation was controlled with air/oxygen. The MH was fixed 45 +/- 12 min (mean +/- SD) after induction of anesthesia. Heart rate and systolic, diastolic, and mean non invasive arterial pressure were monitored and recorded 5 min before induction of anesthesia (control), 1 min before MH application (MH-1), at MH application, and 1 and 2 min after MH application. Systolic, diastolic, mean arterial pressure, and heart rate increased significantly during and after MH application when compared with MH-1 values, but remained constantly lower than control. Hemodynamic parameters measured 1 min before MH application were significantly lower than control. The results of the study indicate that target-controlled anesthesia maintained with constant calculated plasma concentrations of 4 micrograms ml-1 propofol and 0.5 ng ml-1 sufentanil prevents the increase in arterial pressure and heart rate beyond control values following MH application but may induce some degree of arterial hypotension in the absence of nociceptive stimulation.
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