2.5.2. TEAS groups.
hypotensive
HYPOTENSIVE
To exploratively observe the hypotensive effect of different stimulation frequencies, this trial will set up 2 TEAS groups, in which patients will respectively receive TEAS at 2 Hz or 10 Hz, with the addition of their routine care. The interventions will last for 12 sessions of 30 minutes each, 3 sessions per week for 4 weeks. The treatment will be conducted using the TENS mode of a low frequency pulse electroacupuncture instrument (XS-998B06, Nanjing Xiaosong Medical Instrument Research Institute, Nanjing, China).Every instrument has 6 output channels, each connected to a pair of square electrodes (40 mm × 40 mm). The patient is expected to fully expose the acupoints of the limbs in a comfortable sitting position. After cleaning the skin, bilateral acupoints will be applied by electrodes. Each pair of electrodes is connected to 3 groups of acupoints on the same side of the limb, and the acupoints are Quchi (LI11) and Hegu (LI4), Neiguan (P6) and Ximen (PC4), Zusanli (ST36) and Taichong (LR3). Figure Acupoint locations (right limb as an example) and instruments for interventions and evaluations. TEAS = transcutaneous electrical acupoint stimulation; LI11 = Quchi; LI4 = Hegu; PC6 = Neiguan; PC4 = Ximen; ST36 = Zusanli; LR3 = Taichong; HRV = heart rate variability; BP = blood pressure, including systolic and diastolic blood pressure; HR = heart rate; MMAS-8 = 8-item Morisky medication adherence scale; SF-12 = 12-item health survey. Figure 