Does electroacupuncture reduce gut problems in patients treated with pain-relieving drugs after keyhole surgery to the lower bowel?

INTERVENTION: Intervention arm: Electroacupuncture combined with conventional treatment, which included 80 participants Control arm: Conventional treatment, which included 80 participants Electroacupuncture treatment group: Patients in the electroacupuncture group receive acupuncture with electrostimulation with stainless steel needles and a Hwato SDZ‐II electroacupuncture device after surgery. After standard disinfection of the acupoints with 75% ethanol solution, the acupuncturist will position the disposable medical needles (0.30 mm diameter x 1.5 mm length) perpendicular to the skin at the subject’s acupoints and then needle them into the skin. Electroacupuncture is given for 30 minutes, once a day, starting 24 hours after surgery and lasting for 7 days. Acupoints are the following, which are known to promote gastrointestinal motility: ST36 (Zusanli), ST37 (Shangjuxu), LI4 (Hegu), LR3 (Taichong). After standard disinfection of the acupoints with 75% ethanol solution, the acupuncturist will position the disposable medical needles (0.30 mm diameter × 1.5 mm length) perpendicular to the skin at the subject’s acupoints and then needle them into the skin. Patients in conventional treatment group receive routine intravenous nutrition lasts for the patients discharge from hospital and analgesic pump lasts 3 days after surgery. Conventional treatment group: Routine intravenous nutrition lasts for the subjects out of hospital. The randomisation process: Patients will be assigned in a 1:1 ratio to either the electroacupuncture group or the conventional group using random numbers generated in EXCEL. The random numbers will be concealed inside sealed, opaque, serialized envelopes and only one assigned investigator can open them. When recruiters identify a subject who meets the criteria for participation, they will obtain a sequence number for that subject from the researcher in charge of the randomization numbers. Statisticians will be unaware of the group assignment. When the patients CONDITION: Gastrointestinal dysfunction and intestinal infection are common symptoms after laparoscopic colorectal surgery, which will affect the operation effect and prolong postoperative recovery time. ; Digestive System PRIMARY OUTCOME: Time to first flatus and defecation SECONDARY OUTCOME: 1. VAS score of postoperative incisional pain and abdominal pain 24 h, 2 days and 3 days after surgery; 2. Quality of life: We will use the postoperative recovery quality score to evaluate the participants’ quality of life.; 3. Hospital days INCLUSION CRITERIA: 1. Participants must be aged 30–80 years; 2. The evaluation function of elderly mental state scale (MMSE) = 27 points; 3. Colonic and rectal diseases have been diagnosed and colorectal cancer is not diffuse 4. TNM stage is less than stage 3; 5. Participants who have been treated by laparoscopy; 6. The ASA level of the American anesthesiologist is I‐II; 7. Nutritional risk screening confirmed that NRS 2002 score = 3 points in patients before operation; 8. Participants have signed informed consent.