Maternal Sensory Interventions in Newborns

Condition(s) studied

Investigational drug(s) / intervention(s)

Kangaroo Care: Kangaroo care will be provided by the mother for 60 minutes following routine midday care and feeding. The newborn, wearing only a diaper, will be placed in an upright skin-to-skin position on the mother's bare chest. The infant's head will be positioned to maintain airway patency, and a light blanket will be used to maintain thermal stability. Sleep-wake states, sleep onset latency, and physiological parameters will be monitored throughout the 60-minute observation period.

Maternal Lullaby: Following routine midday care and feeding, mothers will sing a lullaby of their choice to their newborn for 15 minutes while the infant remains in the crib. The lullaby will be performed in a soft, soothing voice at a sound level not exceeding 45-50 dB. Sleep-wake states, sleep onset latency, and physiological parameters will be monitored for a total of 60 minutes.

Maternal Tactile-Auditory Soothing: Following routine midday care and feeding, mothers will provide gentle rhythmic tactile stimulation by softly stroking the infant's back and shoulders while simultaneously producing soft rhythmic soothing vocal sounds ("pış pış") for 15 minutes. The sound level will not exceed 45-50 dB. Sleep-wake states, sleep onset latency, and physiological parameters will be monitored for a total of 60 minutes.

Study summary

This study was designed to determine the effects of maternal sensory interventions (kangaroo care, lullabies, and maternal tactile-auditory soothing) on sleep-wake states, physiological parameters, and sleep onset latency in newborns admitted to the neonatal intensive care unit.

Eligibility

Primary outcome measure(s)

• Sleep-Wake States Assessed by Bispectral Index — During the 60-minute observation period following routine midday care and feeding
  Sleep-wake states will be assessed continuously using the Bispectral Index (BIS), a processed electroencephalographic monitoring system with scores ranging from 0 to 100, where higher scores indicate greater wakefulness and lower scores indicate deeper levels of sleep. BIS values will be classified as wakefulness (91-100), REM sleep (80-90), light sleep (55-79), and deep sleep (0-54). The duration and percentage of time spent in each sleep-wake state will be calculated during the 60-minute observation period.
• Sleep Onset Latency — From the beginning of the intervention until sleep onset, assessed within 60 minutes
  Sleep onset latency will be defined as the time, in minutes, from the beginning of the assigned intervention or routine care until the BIS value first decreases below 91, indicating transition from wakefulness to sleep.
• Mean Bispectral Index Score — During the 60-minute observation period
  The mean Bispectral Index (BIS) score will be calculated from values recorded at one-minute intervals throughout the 60-minute monitoring period. BIS scores range from 0 to 100, with higher scores indicating greater wakefulness and lower scores indicating deeper sleep.

Trial sites (1)

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