Yeh Tsu F, Lin Hong C, Chang Chien H, Wu Tien S, Su Bai H, Li Tsai C, Pyati Suma, Tsai Chang H
Department of Pediatrics, College of Medicine, China Medical University, 91 Hsieh Shih St, Taichung, Taiwan.
Pediatrics. 2008 May;121(5):e1310-8. doi: 10.1542/peds.2007-1973. Epub 2008 Apr 21.
Budesonide is an inhaled steroid with a strong topical effect but with minimal systemic effects; it has been effectively delivered to animal lungs using surfactant as a vehicle. The purposes of this study were to determine whether early intratracheal instillation of budesonide using surfactant as a vehicle would improve pulmonary status, reduce mortality, and reduce chronic lung disease morbidity.
We conducted a prospective, randomized blind trial in 116 very low birth weight infants (< 1500 g) who had severe radiographic respiratory distress syndrome and required mechanical ventilation with fraction of inspired oxygen > or = 0.6 shortly after birth: 60 were in the treated group (intratracheal instillation of a mixture of 0.25 mg/kg of budesonide and 100.00 mg/kg of survanta, every 8 hours) and 56 were in the control group (100 mg/kg of survanta only, every 8 hours). The end point assessment was the number of infants who would die or develop chronic lung disease at 36 weeks' postconceptional age.
Infants in the treatment group required significantly lower mean airway pressure on day 1 and day 3 and had significantly lower oxygen index and PCO(2) during the first 3 days than infants in the control group. More infants were extubated in the treatment group than controls at 1 and 2 weeks. The combined outcome of deaths or chronic lung disease was significantly lower in the treatment group than in the control group (19 of 60 vs 34 of 56). No clinically significant adverse effects were observed during the study.
This pilot study indicated that early postnatal intratracheal instillation of budesonide using surfactant as vehicle significantly improved the combined outcome of death or chronic lung disease in small premature infants without causing immediate adverse effects. The results are encouraging, and a large sample multicenter trial is warranted.
布地奈德是一种吸入性类固醇,具有强大的局部作用但全身作用极小;已使用表面活性剂作为载体将其有效递送至动物肺部。本研究的目的是确定早期以表面活性剂为载体经气管内滴注布地奈德是否会改善肺部状况、降低死亡率并减少慢性肺病的发病率。
我们对116例极低出生体重儿(<1500 g)进行了一项前瞻性、随机盲法试验,这些婴儿患有严重的影像学呼吸窘迫综合征,出生后不久需要机械通气且吸入氧分数≥0.6:60例在治疗组(每8小时经气管内滴注0.25 mg/kg布地奈德和100.00 mg/kg固尔苏的混合物),56例在对照组(仅每8小时滴注100 mg/kg固尔苏)。终点评估是在孕龄36周时死亡或患慢性肺病的婴儿数量。
治疗组婴儿在第1天和第3天所需的平均气道压力显著低于对照组,且在头3天的氧指数和PCO₂也显著低于对照组。治疗组在1周和2周时拔管的婴儿比对照组多。治疗组死亡或慢性肺病的综合结局显著低于对照组(60例中的19例 vs 56例中的34例)。研究期间未观察到具有临床意义的不良反应。
这项初步研究表明,出生后早期以表面活性剂为载体经气管内滴注布地奈德可显著改善小早产儿死亡或慢性肺病的综合结局,且不会引起即刻不良反应。结果令人鼓舞,有必要进行大样本多中心试验。