Martin R J, Herrell N, Rubin D, Fanaroff A
Pediatrics. 1979 Apr;63(4):528-31.
To determine the optimal position for the preterm infant, arterial oxygen tension (Pao2) was monitored in 16 preterm infants by the transcutaneous method with the infants in both supine and prone positions. When the infants were prone, Pao2 rose by a mean of 7.4 mm Hg (P less than .001), an increase of 15%. In those infants with residual cardiopulmonary disease a 25% increase was noted. The higher Pao2 in the prone position was accompanied by a significant decrease in the amount of time the chest wall moved asynchronously. This improved oxygenation in the prone position appears to be the result of enhanced ventilation/perfusion ratios and not merely secondary to an alteration in sleep state with positioning of the infant. These findings may have important implications in the management of preterm infants, requiring neonatal intensive care.
为确定早产儿的最佳体位，采用经皮监测法对16例早产儿在仰卧位和俯卧位时的动脉血氧分压（Pao2）进行了监测。当婴儿处于俯卧位时，Pao2平均升高7.4 mmHg（P<0.001），增幅为15%。在那些有残留心肺疾病的婴儿中，增幅为25%。俯卧位时较高的Pao2伴随着胸壁异步运动时间的显著减少。俯卧位时这种改善的氧合似乎是通气/灌注比提高的结果，而不仅仅是由于婴儿体位改变导致睡眠状态改变的继发效应。这些发现可能对需要新生儿重症监护的早产儿管理具有重要意义。
