Effect of Multisensory Stimulation on Pain of Eye Examination in Preterm Infants

Background Eye examination as one of the painful procedures for retinopathy of prematurity screening can cause some pain-related physiological and behavioral changes in preterm infants. Multisensory stimulation is an analgesic non-pharmacological method that has analgesic effects on infants during painful procedures. Objectives This study aimed to determine the effect of multisensory stimulation on induced pain during eye examination for retinopathy of prematurity screening in preterm infants. Methods In this double-blind clinical trial, 80 preterm infants were randomly divided into two groups. In the intervention group, multisensory stimulation program was performed for 15 minutes before the beginning of examination while the control group received the routine care. Pain score for each infant was recorded by premature infant pain profile. Data were analyzed using independent t-test, Mann-Whitney, and ANOVA with repeated measures by SPSS software (version 16). Results The mean gestational age was 30.4 ± 1.7 weeks in the multisensory stimulation group and 30.6 ± 1.8 weeks in the control group. Based on ANOVA with repeated measures, the pain score was significantly different between two groups during the assessment process (P < 0.001). The changes in pain severity during the examination were also significant between the two groups (P < 0.001); so that the pain was more intensive in the control group than the intervention group. Conclusions Multisensory stimulation program as a safe and easy method can reduce pain in neonates and may be used as a way to reduce pain during eye examination in infants.

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