Efficacy and safety of transcutaneous electrical acustimulation on improving gastrointestinal symptoms associated with endoscopic retrograde cholangiopancreatography: a randomized controlled trial

INTERVENTION: trial group:TEA;control group:Sham‐TEA; CONDITION: endoscopic retrograde cholangiopancreatography PRIMARY OUTCOME: total score of digestive tract symptoms; SECONDARY OUTCOME: single score of digestive tract symptoms;incidence of postoperative pancreatitis and other complications;the need for drug treatment;time of resuming to eat;hospital stay after operation;blood test indexes;gastric slow waves;heart rate variability; INCLUSION CRITERIA: 1.Willing to sign the informed consent form; 2.Age: 18‐80, regardless of gender; 3.Patients to be examined and treated by ERCP.