早产儿诊断:胎龄<37周的新生儿;体质量<1500 g为极低出生体重儿;体重<1 000 g为超低出生体质量儿;根据体质量与胎龄的关系可诊断为小于胎龄儿,适于胎龄儿和大于胎龄儿。根据出生体质量或出生后日龄选择合适的箱温。1呼吸管理1氧疗动脉氧分压<50 mm Hg或SPO2<85%情况下氧疗,保持SPO2 88~94%。呼吸衰竭者的患儿进行机械通气治疗;2呼吸暂停的治疗,查找病因是关 Diagnosis of premature children: gestational age <37 weeks of newborns; body weight <1500 g for very low birth weight children; weight <1000 g for the low birth weight children; body mass and gestational age can be diagnosed as less than Gestational age, suitable for gestational age children and children older than gestational age. According to the birth weight or day after birth, select the appropriate box temperature. 1 Breathing management 1 Oxygen therapy with oxygen arterial pressure <50 mm Hg or SPO2 <85%, maintaining SPO2 88-94%. Respiratory failure in children with mechanical ventilation treatment; 2 apnea treatment, find the cause is off