Patients of the EA + GA group were treated with EA stimulation ( 2 Hz/100 Hz ) of the bilateral Fengchi ( GB 20 ) , Shuaigu ( GB 8 ) and acupuncture stimulation of Quanliao ( SI 18 ) , Zulinqi ( GB 41 ) and Taichong ( LR 3 ) , and not given intubation during surgery .