Database of the randomized clinical trial for pain reduction in pregnant women with acupressure
Description
Hypothesis: Stimulation of acupoints SP6 and LI4 reduces pain intensity compared to conventional techniques. Objetive: examine the effects of acupressure at the SP6 (Sanyinjiao) and LI4 (Hegu) points on pain during the active phase of labor. A randomized, controlled, single-blind, parallel-group clinical trial (1:1) involving 90 women in active labor randomly assigned to either the intervention or control group. Primary outcome was pain intensity measured by the Visual Analog Scale (VAS) immediately before and after the intervention. Secondary outcome was time from the start of the intervention to delivery. The intervention involved applying steady manual pressure to the SP6 and LI4 acupoints, while the control group received only superficial touch at the same points. Pain intensity was measured using the Visual Analog Scale before and after the intervention. Intervention: Pressure was applied using the thumb, with constant and firm pressure sufficient to elicit a sensation of soreness without causing pain, during uterine contractions. Each acupoint (SP6 and LI4) was stimulated bilaterally for 10 minutes per side, totaling 20 minutes of intervention. In control group (GP) the same protocol was followed, but with superficial touch. Data analysis: Relative and absolute frequencies were used to present categorical variables. The Kolmogorov-Smirnov test was used to assess data normality, which was confirmed, in addition to parametric comparison tests. Thus, the paired t-test was applied to compare the mean VAS and the difference in means used as a measure of the effect size in pain reduction. Additionally, an independent samples t-test was used to verify the effect of acupressure on reducing labor time. Pearson's correlation test was used to analyze the correlation between pain reduction and the variables dilation, number of deliveries, abortions, number of contractions, and duration of labor from the start of intervention to delivery. For all analyses, the significance level was 5%.mResults: The findings demonstrated a statistically significant reduction in pain in the intervention group, with a mean difference of 2.4 points on the scale.
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Institutions
- Universidade Estadual de Santa CruzBahia, Ilhéus