The optimal anesthetic depth for interventional neuroradiology: comparisons between light anesthesia and deep anesthesia

Korean journal of anesthesiology
Yoo Sun JungYoung-Tae Jeon


This study was designed to determine the optimal anesthetic depth for the maintenance and recovery in interventional neuroradiology. Eighty-eight patients undergoing interventional neuroradiology were randomly allocated to light anesthesia (n = 44) or deep anesthesia (n = 44) groups based on the value of the bispectral index (BIS). Anesthesia was induced with propofol, alfentanil, and rocuronium and maintained with 1-3% sevoflurane. The concentration of sevoflurane was titrated to maintain BIS at 40-49 (deep anesthesia group) or 50-59 (light anesthesia group). Phenylephrine was used to maintain the mean arterial pressure within 20% of preinduction values. Recovery times were recorded. The light anesthesia group had a more rapid recovery to spontaneous ventilation, eye opening, extubation, and orientation (4.1 ± 2.3 vs. 5.3 ± 1.8 min, 6.9 ± 3.2 min vs. 9.1 ± 3.2 min, 8.2 ± 3.1 min vs. 10.7 ± 3.3 min, 10.0 ± 3.9 min vs. 12.9 ± 5.5 min, all P < 0.01) compared to the deep anesthesia group. The use of phenylephrine was significantly increased in the deep anesthesia group (768 ± 184 vs. 320 ± 82 µg, P < 0.01). More patients moved during the procedure in the light anesthesia group (6/44 [14%] vs. 0/44 [0%], P = 0.026). BIS values betw...Continue Reading


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Sep 22, 2007·Anesthesiology Clinics·William L Young
Jun 5, 2010·Stroke; a Journal of Cerebral Circulation·Amer AlshekhleeSalvador Cruz-Flores

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