CYCLED LIGHT VERSUS NEAR DARKNESS IN THE PRETERM INFANT

光影响生理参数，身体发育，睡眠-觉醒状态， 早产儿的昼夜循环和感觉系统。本研究 将研究循环光线和连续接近黑暗的影响 早产儿的生长发育，将从 新生儿重症监护病房到足月的入院时间 或者出院。妊娠31周以下的早产儿 住进东南部地区三级护理教学医院将 有资格参加。婴儿将被随机分配到一个 共3组：第1组将从出生起就接受连续的近乎黑暗 直到妊娠32周，随后的光循环，组2将 从出生起接受循环光，第三组将接受连续的近距离照射 从出生起就是黑暗。结果衡量标准将包括体力增长 (身高、体重、头围)、住院时间、人数 呼吸机天数、睡眠-唤醒状态组织、昼夜组织 生理参数(例如心率)和神经行为 组织(例如，视觉和听觉功能)。调查结果是 预计将指示最合适的骑行灯时机。

Light affects physiologic parameters, physical growth, sleep-wake states, day/night cycling, and sensory systems of preterm infants. This study will examine the effects of cycled light and continuous near darkness on the growth and development of preterm infants, who will be followed from the time of admission into the neonatal intensive care nursery until term or hospital discharge. Preterm infants less than 31 weeks gestation admitted to a Southeastern regional tertiary care teaching hospital will be eligible for participation. Infants will be randomly assigned to one of 3 groups: Group 1 will receive continuous near darkness from birth until 32 weeks gestation with subsequent cycled light, Group 2 will receive cycled light from birth, and Group 3 will receive continuous near darkness from birth. Outcome measures will include physical growth (height, weight, head circumference), length of hospital stay, number of ventilator days, sleep-wake state organization, day/night organization of physiologic parameters (e.g. heart rate) and neurobehavioral organization (e.g. visual and auditory functioning). The findings are expected to indicate the most appropriate timing of cycled light.