Chronic pelvic pain (CPP) is one of the common symptoms of women at childbearing age. The aim of this study is to assess the efficacy of acupuncture for female with non-cyclic chronic pelvic pain. A three-arm randomized controlled trial (RCT) using acupuncture, sham acupuncture and waiting list with a total sample of 150 will be conducted.
Chronic pelvic pain (CPP) is a persistent pain in pelvis, anterior abdominal wall, lower back, or buttocks lasting at least six months. According to a WHO epidemiological study, the worldwide prevalence rate of CPP in childbearing age women was 2.1%-24%. At present, nearly 55% of the patients had unclear etiology, and there is no universally accepted diagnosis, evaluation and treatment. CPP is often associated with gynecological and non gynecological diseases, including endometriosis, abdominal visceral adhesion, myofascial pain and dysfunction, irritable bowel syndrome and interstitial cystitis/bladder pain syndrome. CPP are also accompanied by psychological and physiological dysfunction, the most common is depression and anxiety, which seriously affects the quality of life of patients. Acupuncture may have effect on non-cyclic CPP in female, however, there is a lack of evidence of effectiveness of acupuncture. A multi-center randomized three-armed controlled trial will be conducted. The aim of this study is assess the efficacy and safety of acupuncture for female patients with non-cyclic CPP.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Enrollment
150
Sterile adhesive pads will be placed after skin disinfection on the acupoints. Guanyuan (CV4)，Qihai (CV6)，bilateral Sanyinjiao (SP6), Yinbao (LR9), Qixue (KI13) and Fujie (SP14) will be inserted through the pads by the needles (0.30mm in diameter, 40 mm in length, Hwato Brand, Suzhou Medical Appliance Factory, China) to a depth of 25-30mm. Yintang (GV4) will be inserted through the pads by the needle (0.30mm in diameter, 25mm in length, Hwato Brand, Suzhou Medical Appliance Factory, China) to a depth of 10-15mm. The needles at all points will be lightly lifting, thrusting, and twirling every 10 minutes during each session with the sensation of sourness, achiness, heaviness and numbness (deqi). The participants will be treated three times a week, on alternate days (ideally), for 6 successive weeks; 18 sessions for each patient in total.
Sterile adhesive pads will be placed after skin disinfection on the acupoints. Needles (0.30 mm in diameter, 25 mm in length) with a blunt tip will be inserted at the Guanyuan (CV4)，Qihai (CV6)，bilateral Sanyinjiao (SP6), Yinbao (LR9), Qixue (KI13) and Fujie (SP14) without penetrating the skin. The participants will be treated three times a week, on alternate days (ideally), for 6 successive weeks; 18 sessions for each patient in total.
The change from baseline of the mean score in the past week of the Visual Analogue Scale
The scores of the Visual Analogue Scale range from 0 to 10，higher scores mean a worse outcome.
Time frame: Week 6, 18 and 30
The change from baseline of the Brief Pain Inventory score
The Brief Pain Inventory score uses 0-10 numeric scales for item rating with 0 being "no pain" and 10 being "pain as bad as you can imagine". The pain severity score is calculated from the four items about pain intensity with a range from 0 to 40. The pain interference score corresponds to the item on pain interference with a range from 0 to 70. Higher scores of the Brief Pain Inventory mean a worse outcome.
Time frame: Week 6, 18 and 30
The change from baseline of the pain severity score of the Brief Pain Inventory
The pain severity score of the Brief Pain Inventory is calculated from the four items about pain intensity. Each item is rated from "no pain" to "pain as bad as you can imagine", and contributes with the same weight to the final score, ranging from 0 to 40. The pain interference score corresponds to the item on pain interference. Higher scores of the The pain severity score mean a worse outcome.
Time frame: Week 6, 18 and 30
The change from baseline of the pain interference score of the Brief Pain Inventory
The pain interference score of the Brief Pain Inventory corresponds to the item on pain interference. The seven subitems are rated from "does not interfere" to "completely interferes", and contributes with the same weight to the final score, ranging from 0 to 70. Higher scores of the pain interference score mean a worse outcome.
Time frame: Week 6, 18 and 30
The proportion of patients with decrease of 0.6 score or more from baseline of the pain interference score of the Brief Pain Inventory
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The pain interference score of the Brief Pain Inventory corresponds to the item on pain interference. The seven subitems are rated from "does not interfere" to "completely interferes", and contributes with the same weight to the final score, ranging from 0 to 70. Higher scores of the pain interference score mean a worse outcome.
Time frame: Week 6, 18 and 30
The proportion of patients with decrease of 20% or more from baseline of the pain severity score of the Brief Pain Inventory
The pain severity score of the Brief Pain Inventory is calculated from the four items about pain intensity. Each item is rated from "no pain" to "pain as bad as you can imagine", and contributes with the same weight to the final score, ranging from 0 to 40. The pain interference score corresponds to the item on pain interference. Higher scores of the The pain severity score mean a worse outcome.
Time frame: Week 6, 18 and 30
The change from baseline of the Pain Catastrophising Questionnaire score
The Pain Catastrophising Questionnaire is a validated scale with 13 items, each scored from 0 (not at all) to 4 (all the time) with a total score range of 0-52, across three domains: rumination (0-16); magnifications (0-12); and helplessness (0-24).Higher scores of the Pain Catastrophising Questionnaire mean a worse outcome.
Time frame: Week 6, 18 and 30
The change from baseline of the Hospital Anxiety and Depression Scale score
the score of the Hospital Anxiety and Depression Scale ranges from 0 to 42. Higher scores mean a worse outcome.
Time frame: Week 6, 18 and 30
The change from baseline of the World Health Organisation Quality of life - Bref Questionnaire score
Domain scores for the World Health Organisation Quality of life-Bref Questionnaire score are calculated by taking the mean of all items included in each domain and multiplying by a factor of four. These scores are then transformed to a 0-100 scale.Higher scores denote higher quality of life.
Time frame: Week 6, 18 and 30
The proportions of participants in each response category of the Patient global impression of change
Patient global impression of change consists of 7 response categories with a range of 1-7: "very much improved," "much improved," "minimally improved," "no change," "minimally worse," "much worse," or "very much worse." Higher scores mean a worse outcome.
Time frame: Week 6, 18 and 30
The proportion of subjects using rescue medications and the duration of medication use
The use of medications during this trial. However, medication use is allowed for intolerable symptoms as long as it is recorded accordingly, including the name, the dosage, and the duration of the medication use.
Time frame: Week 6, 18 and 30