Strauch C, Brandt S, Edwards-Beckett J
Neonatal Netw. 1993 Mar;12(2):31-5.
It is necessary to decrease environmental stimuli in order to provide developmentally supportive care to the very low birthweight (VLBW) infant, thereby enhancing the sleep/wake cycle and possibly physiologic stability. The purpose of this study was to determine if it was possible to decrease the noise level in the Developmental Unit, and promote sleep states in infants on the unit. After determining control noise levels and infant state, the last hour of each shift was designated a Quiet Hour. During this time, noise levels were monitored in the room in five locations. Infant sleep states were also noted. The results indicate that noise levels decreased significantly on two of the three shifts. Fewer infants were crying during the Quiet Hour than the control period (2.4 vs 14.3 percent), and more were in deep or light sleep (84.5 vs 33.9 percent). This study demonstrates that noise levels in Developmental Units can be significantly decreased, and that the decreased noise levels positively impact infant state. By enhancing sleep states, nurses can enhance the long term developmental outcome of the VLBW infant. However, the reduction of noise is highly dependent on the collaborative efforts of all health care providers within the unit.
为了给极低出生体重（VLBW）婴儿提供有利于发育的护理，减少环境刺激是必要的，这样可以改善睡眠/觉醒周期，并可能提高生理稳定性。本研究的目的是确定是否有可能降低发育病房的噪音水平，并促进该病房婴儿的睡眠状态。在确定对照噪音水平和婴儿状态后，每个班次的最后一小时被指定为安静时间。在此期间，在房间的五个位置监测噪音水平。同时也记录婴儿的睡眠状态。结果表明，三个班次中的两个班次噪音水平显著降低。在安静时间哭闹的婴儿比对照期少（2.4%对14.3%），处于深度或浅睡眠的婴儿更多（84.5%对33.9%）。这项研究表明，发育病房的噪音水平可以显著降低，且噪音水平的降低对婴儿状态有积极影响。通过改善睡眠状态，护士可以提高VLBW婴儿的长期发育结局。然而，噪音的降低高度依赖于病房内所有医护人员的共同努力。
