[Acupuncture in fibromyalgia: a randomized, controlled study addressing the immediate pain response.]

Author: Marchesini Stival RS1, Rechetello Cavalheiro P1, Stachera Stasiak CE1, Galdino DT1, Hoekstra BE1, Schafranski MD2.
1Faculdade de Medicina da Universidade Estadual de Ponta Grossa, Ponta Grossa, PR, Brasil. 2Universidade Federal do Paraná, Curitiba, PR, Brasil; Universidade Estadual de Ponta Grossa, Ponta Grossa, PR, Brasil. Electronic address: marceloschafranski@yahoo.com.br.
Conference/Journal: Rev Bras Reumatol.
Date published: 2014 Nov-Dec
Other: Volume ID: 54 , Issue ID: 6 , Pages: 431-436 , Special Notes: [Article in Portuguese] doi: 10.1016/j.rbr.2014.06.001 , Word Count: 218

To evaluate the efficacy of acupuncture in the treatment of fibromyalgia, considering the immediate response of the visual analogue pain scale (VAS) as its primary outcome.
Randomized, controlled, double-blind study including 36 patients with fibromyalgia (ACR 1990) selected from the outpatient rheumatology clinic, Santa Casa de Misericórdia, Ponta Grossa, PR. Twenty-one patients underwent an acupuncture session, under the principles of the traditional Chinese medicine, and 15 patients underwent a placebo procedure (sham acupuncture). For pain assessment, the subjects completed a Visual Analogue Scale (VAS) before and immediately after the proposed procedure. The mean change in VAS was compared among groups.
The variation between the final and initial VAS values was -4.36±3.23 (P=0.0001) in the treatment group and -1.70±1.55 in the control group (P=0.06). The difference in terms of amplitude of variation of VAS (initial - final VAS) among groups favored the actual procedure (P=0.005). The effect size (ES) for the treatment group was d=1.7, which is considered a large effect. Although small, the statistical power of the sample for these results was very relevant (94.8%).
Acupuncture has proven effective in the immediate pain reduction in patients with fibromyalgia, with a quite significant effect size.
Copyright © 2014 Elsevier Editora Ltda. All rights reserved.
Acupuncture; Acupuntura; Chronic pain; Dor crônica; EVA; Fibromialgia; Fibromyalgia; Visual analogue pain scale
PMID: 25458024