本研究之目的是探討光線照度對保混箱內早產兒生理指標的影響，研究方法是採類實驗重起測量設計(repeated measures design)。收案標準為妊娠週期少於或等於37週，出生體重少於2500gm之新生早產兒，研究收案35名。研究先後測量新生兒加護病房原有包布覆蓋狀態，色布覆蓋保溫箱上方、後方和側邊1/3處及移除包布，三個情境保溫箱內光線照度、音量、平產兒的心跳遠率、呼吸速率及血氧飽和度。收案時段選擇在未進行任何醫護措施的時段，研究工具包括光照度儀器、噪音測量器及心跳、呼吸、血氧飽和度監視器。收案場所為三所區域醫院新生兒加護病房，資料分析方法色括描述性統計及一般均方統計(general estimation equation， GEE)。研究結采顯示:(1)光線照度與平產兒心跳、呼吸速率及血氧飽和度的變化有顯著相關( P = .00)。 (2)隨著光線的增強會使早產兒的心跳、呼吸速率增快，血氧飽和度降低。(3)包布的覆蓋方式是以覆蓋保溫箱上方、後側及側邊1/3處，最能有效的降低保溫箱內光線照度( P = .00 )。本研究結果可以提供臨床新生兒照護措施的依據，並作為日後進一步研究的參考。

This study attempts to find out the effects of light intensity on premature infants' physiological parameters. The research method adopted utilized a quasiexperimental repeated measures design. Thirty-five premature infants born in no more than thirty seven gestation weeks and with birth weight less than 2500g were tar-geted. The first step was to examine the original arrangement of the blankets over the incubators, the second step was to investigate the effect of placing blankets on the top of the incubator and draped down the top 1/3of the sides.The third step was conducted without blankets. Factors including light intensity and volume in the incubator and heart rate, respiration rate, and blood oxygen saturation of the premature infants were recorded in all three steps. During the experimental period, no nursing treatment or interventions were allowed. Instruments used in the study included a photometer, a phonometer, a V8 camera, a heart rate monitor, a respiration monitor, and a blood oxygen saturation monitor. The study was conducted in the NICUs in three district hospitals in northern Taiwan. To analyze the data, descriptive statistics and the General Estimation Equation (GEE) were applied. The study shows: (1) Light intensity had a significant statistical relationship with the premature infants' physiological parameters (P= .00). (2) The heart rate and respiration rate increased and the blood oxygen saturation decreased as the intensity oflight went up. (3) Placing a blanket over the top and sides of the incubator effectively reduces light levels inside (P = .00). The results of this study suggest a treatment principle for premature infants and provide a basis further research.