IRCT2012081510606N1 IRCT 2012-10-08 Deputy of Research, Faculty of Nursing and Midwifery, Tehran University of Medical Sciences Effect of music therapy on preterm infants Effect of Classical Music and Lullaby on Physiologic Parameters and Sleep/Awake State of Hospitalized Preterm Infants in NICU 2012-03-19 anticipated 72 Complete https://irct.ir/trial/11078 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Crossover, Purpose: Supportive. N/A physiologic parameters and sleep/awake status. Intervention 1: This study is crossover and every sample is observed one time as control and two anothrt times as intervention groups. every situation lasts for two days. intervention situations include lullaby and classical music and for every situation two days. observaton time in all situations is 40min every day.it starts 10min before music in intervention groups and continues for 20min music time and 10min after music. in lullaby situation,0.5 to 1 hr after nutrition we start observation.2 cameras record dependent variables.10 min after start, lullaby is played through 2 speakers, located at incubater corners,with 30 cm of infant's head, in 45-50 dl for 20 min.observation lasts 20 min after music..this situation for every infant includs 2 consecutive days. Intervention 2: in classical music situation,0.5 to 1 hr after nutrition we start observation.2 cameras record dependent variables.10 min after start, classical music(Baby Mozzart) is played through 2 speakers, located at incubater corners,with 30 cm of infant's head, in 45-50 dl for 20 min.observation lasts 20 min after music. this situation for every infant includs 2 consecutive days. Intervention 3: in control situation.every infant is observed 40 min,start 0/5 to 1 hr after nutrition.2 cameras record dependent variables.this situation for every infant includs 2 consecutive days.