The lightanesthesia 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 microg, P < 0.01). More patients moved during the procedure in the lightanesthesia group (6/44 [14%] vs. 0/44 [0%], P = 0.026).
CONCLUSIONS:
BIS values between 50 and 59 for interventional neuroradiology were associated with a more rapid recovery and favorable hemodynamic response, but also with more patientmovement. We suggest that maintaining BIS values between 40 and 49 is preferable for the prevention of patientmovement during anesthesia for interventional neuroradiology.