The Effects of Acupressure on Physiological Indicators of Pain in Children Undergoing Tonsillectomy: A Randomized, Single-Blind, Placebo-Controlled Trial Study

Abstract

Background: Tonsillectomy is regarded as one of the most commonly used pediatric surgical procedures whose anxiety-related consequences can bring about several changes in the physiological characteristics of children. Therefore, the use of low-cost anxietyrelieving techniques in this domain can be of utmost importance to stabilize vital signs in this age group. Objectives: Accordingly, the purpose of the present study was to investigate the effects of acupressure on physiological indicators of pain including respiratory rate, heart rate, and levels of arterial oxygen saturation in children undergoing tonsillectomy. Methods: This study was a three-group single-blind clinical trial conducted on 144 children aged five to 12 years undergoing a tonsillectomy. To this end, the subjects were allocated into three groups of 48 individuals including control, intervention, and placebo ones. In this respect, the intervention (experimental) group received acupressure applied to three pressure points three times a day for one hour, two to four hours, and six to eight hours following a tonsillectomy. However, in the placebo group, acupressure was applied to a false (sham) acupoint. The control group also received only routine care services. Before and after all three phases of the intervention, the physiological indicators of pain (heart and respiratory rate, blood pressure) were measured and recorded in all three study groups. The data were finally analyzed using descriptive statistics (mean and standard deviation) and inferential ones (Wilcoxon signed-rank test, chi-square test, one-way analysis of variance (ANOVA), and Kruskal-Wallis test). Results:The results of this study revealed significant differences in heart rate (P = 0.001), respiratory rate (P = 0.001), and levels of arterial oxygen saturation (P = 0.001) after three intervals of acupressure in the intervention group compared to those in other two groups. Accordingly, the means of heart rate and respiratory rate decreased and the levels of arterial oxygen saturation increased in the intervention group indicating a small number of fluctuations and much more balance in physiological indicators of pain. Conclusions:The findings of the present study showed that parasympathetic activity, following acupressure in the intervention group, could cause several changes in physiological responses, and also create a sense of relief and moderate anxiety in children. Therefore, anxiety in children undergoing a tonsillectomy could be lowered with the use of a simple, low-cost, and non-invasive technique contributing to the maintenance of physiological indicators of pain as well as decreased complications driven by vital signs, not in a normal range.

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