%0 Journal Article
%T Transcutaneous Electrical Nerve Stimulation on the PC-5 and PC-6 Points Alleviated Hypotension after Epidural Anaesthesia, Depending on the Stimulus Frequency
%A Young-Chang P. Arai
%A Akihiro Ito
%A Kenji Ohshima
%A Soki Hibino
%A Sinnosuke Niwa
%A Jun Kawanishi
%A Hiroki Numanami
%A Yoshikazu Sakakima
%A Shouji Mizuno
%A Yusuke Tawada
%A Yuki Maruyama
%A Jun Sato
%A Makoto Nishihara
%A Shinsuke Inoue
%A Takahiro Ushida
%J Evidence-Based Complementary and Alternative Medicine
%D 2012
%I Hindawi Publishing Corporation
%R 10.1155/2012/727121
%X Neuraxial blockade causes arterial hypotension. Transcutaneous electrical nerve stimulation (TENS) at the Neiguan (PC-6) and Jianshi (PC-5) reduces the severity of hypotension after spinal anaesthesia, but did not clarify the optimal stimulus frequency. We hypothesized that the stimulus frequency of TENS at the PC-6 and PC-5 points would influence the severity of hypotension after epidural anaesthesia. 65 ASA I or II male patients presenting for inguinal hernia repair were randomized to five groups: the control group received no treatment; the 2 Hz, 10 Hz, 20 Hz, and 40 Hz groups received TENS at a frequency of 2 Hz, 10 Hz, 20 Hz, and 40 Hz, respectively. The lowest SBP was significantly higher in the 40 Hz group [the control, 84 (74–110) mmHg; the 2 Hz, 96 (62–116) mmHg; the 10 Hz, 100 (68–110) mmHg; the 20 Hz, 96 (64–115) mmHg; the 40 Hz, 104 (75–140) mmHg: =0.004]. Significantly less patients experienced hypotension in the 40 Hz group [the control, 78%; the 2 Hz, 43%; the 10 Hz, 38%; the 20 Hz, 38%; the 40 Hz, 8%: =0.008]. TENS on the PC-6 and PC-5 points reduced the severity and incidence of hypotension after epidural anaesthesia, depending on the stimulus frequency.
%U http://www.hindawi.com/journals/ecam/2012/727121/