Acupuncture-assisted Anesthesia Describe Cerebral State Index under the Steady-state Anesthesia of Sevoflurane / 浙江中医药大学学报

ABSTRACT

Objective]To investigate the effect of acupuncture-assisted anesthesia on cerebral state index(CSI) under the steady-state anesthesia of sevoflurane. [Methods] Fifty patients scheduled for elective knee arthroscopy operation were randomly divided into two groups with 25 in each. All patients were induced with sevoflurane, the end-tidal concentrations of sevoflurane in two groups were adjusted to 1.0 MAC and maintained for 15 min after tracheal intubation, acupuncture-assisted anesthesia was used on the affected side in group A, Yanglingquan(GB34) and Zusanli(ST36) were selected as the acupoints. The positive and negative electrodes of the electropuncture apparatus(G8650) were respectively connected with Yanglingquan(GB34) and Zusanli(ST36). People reccived transcutaneous electrical acupoint stimulation with condensation-rarefaction wave(2/15 Hz, 8~12mA) untill the end of operation, patiant's body types SBP, SDP, MAP, HR and CSI were recorded at lying still for 5 min(T1), steady state of sevoflurane(T2), acupuncture-assisted anesthesia after 20 and 30 min(T3, T4). [Results] SBP, DBP, MBP, HR and CSI at T3~T4 were significantly lower in group A than those in group B and T2(P<0.05). [Conclusion]Acupuncture-assisted anesthesia can reduce the CSI under the steady-state anesthesia of sevoflurane and lower blood pressure and heart rate at the same time.