anesthesia induction , electroacupuncture ( EA ) was applied to Hegu ( LI 4 ) , Neiguan ( PC 6 ) , Houxi ( SI 3 ) and Zhigou ( TE 6 ) for 30 min ; during surgery , EA and intravenous medication were combined at the same acupoints as those before surgery ; after surgery , moxibustion and the analgesia pump were applied in combination for analgesia .