[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.
Affiliation: 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