Effect of music combined with swaddling on pain in full-term newborns: randomized clinical trial

ABSTRACT Objectives: to evaluate the effect of music applied within ten and 15 minutes, combined with swaddling, on behavioral (facial action) and physiological (heart rate) responses to pain in full-term newborns, before and during venipuncture for blood sampling. Methods: a randomized, triple-blind, clinical trial with 52 rooming in infants randomly assigned to four groups of 13: Experimental 1 (music [ten minutes] plus swaddling), Experimental 2 (music [15 minutes] plus swaddling), Control 1 (no music [ten minutes] plus swaddling), and Control 2 (no music [15 minutes] plus swaddling). Pain was measured using the Neonatal Facial Coding System in the basal and procedural moments. Results: experimental 2 group showed high pain absence (p < 0.05); low heart rate mean (p < 0.0001) in the basal and procedural (antisepsis, puncture, blood squeezing/aspiration, compression) moments. Conclusions: neonates who listened to 15 minutes of music plus swaddling showed a greater absence of facial pain actions. RESUMEN Objetivos: evaluar el efecto de la música aplicada en 10 y 15 minutos, combinada con swaddling, en la respuesta comportamental al dolor (mímica facial) y fisiológica (frecuencia cardíaca) de los recién nacidos a término, antes y durante la punción venosa para la extracción de sangre. Métodos: ensayo clínico aleatorizado, triple ciego, realizado en alojamiento conjunto con 52 recién nacidos, dividido aleatoriamente en cuatro grupos de 13: Experimental 1 (música [10 minutos], swaddling), Experimental 2 (música [15 minutos], swaddling), Control 1 (sin música [10 minutos, swaddling) y Control 2 (sin música [15 minutos], swaddling,). El dolor se midió utilizando el Neonatal Facial Coding System en los momentos Basal y Procedimiento. Resultados: el grupo experimental 2 mostró alta ausencia de dolor (p