Acupuncture on GB34 for immediate analgesia and regulating pain-related anxiety for patients with Biliary Colic: a Protocol of Randomized Controlled Trial

INTERVENTION: Acupuncture group:acupuncture;Sham acupuncture group:Park sham device; CONDITION: Biliary Colic PRIMARY OUTCOME: the change of pain intensity from baseline to 30 min after acupuncture by evaluating the numerical rating scale (NRS); SECONDARY OUTCOME: The pain intensity;The degree of gastrointestinal symptoms;the Pain Anxiety Symptoms Scale‐20 (PASS‐20);The anxiety level during pain episodes;the Fear of Pain Questionnaire‐III (FPQ‐III);the Pain Catastrophizing Scale (PCS);Acupuncture Expectancy Scale;patient’s satisfaction for acupuncture;the Chinese version of the modified Massachusetts General Hospital Acupuncture Sensation Scale (C‐MASS);The usage of rescue analgesia and at 30 min after needle manipulation;the recurrence rate of BC and adverse events at 72 hours after needle manipulation; INCLUSION CRITERIA: 1. meet the diagnostic criteria; 2. mild tenderness in the right upper quadrant, Murphy's sign (‐)/(+); 3. the score of NRS>=3; 4. BC patients aged 18 to 60 years old, without gender restrictions; 5. gallbladder stones demonstrated by radiology or ultrasonography; 6. no acupuncture treatment in the past month; 7. not participating in other clinical studies; 8. voluntarily sign the informed consent form.