Effect of transcutaneous electrical acupoint stimulation on intracranial pressure in patients undergo-ing laparoscopic hysterectomy:measurement of optic nerve sheath diameter
Effect of transcutaneous electrical acupoint stimulation on intracranial pressure in patients undergo-ing laparoscopic hysterectomy:measurement of optic nerve sheath diameter
Objective To evaluate the effect of transcutaneous electrical acupoint stimulation(TEAS)on the intracranial pressure in patients undergoing laparoscopic hysterectomy by measuring the optic nerve sheath diameter(ONSD)via ultrasound.Methods Forty-two American Society of Anesthesiologists Physical Status classification Ⅰ or Ⅱ patients,aged 18-60 yr,with a body mass index of 18-28 kg/m2,sched-uled for elective laparoscopic hysterectomy,were divided into 2 groups(n=21 each)using a random number table method:control group(group C)and TEAS group(group T).In group T,TEAS was applied to the Yintang(EX-HN3)and Taiyang(EX-HN5)acupoints at 30 min before anesthesia,the stimulation used al-ternating dense-disperse waves at a frequency of 2/100 Hz,with the current intensity starting at 1 mA and in-creasing to the maximum tolerable level just below the pain threshold,and stimulation was maintained at the Hegu(LI4),Quanliao(SI18),and Fengchi(GB20)acupoints during surgery until the procedure was com-pleted.Patients had electrode pads applied to the corresponding acupoints without electrical stimulation in group C.The ONSD was measured upon entry into the operating room(T0),3 min after anesthesia induction(T1),5 min after trendelenburg position(T2),30 min after trendelenburg position(T3),60 min after tren-delenburg position(T4),and immediately after the end of operation(T5).Results Compared to the base-line at T0,the ONSD was significantly increased at T3-5 in group C and at T4,5 in group T(P<0.05).The ONSD was significantly lower at T4 5 in group T than in group C(P<0.05).Conclusions TEAS can reduce the intracranial pressure to some extent in patients undergoing laparoscopic hysterectomy.
关键词
电刺激疗法/腹腔镜/子宫切除术/颅内压/视神经鞘直径
Key words
Electric stimulation therapy/Laparoscopes/Hysterectomy/Intracranial pres-sure/Optic nerve sheath diameter