不同胎龄新生儿肺通气功能探讨

STUDY ON THE PULMONARY VENTILATIVE FUNCTION OF NEWBORN INFANTS WITH DIFFERENT GESTATIONAL AGE

用啼哭肺功能试验法对57例不同胎龄新生儿(其中足月儿31例、早产儿19例、过期产儿7例)进行肺通气功能测定,结果:早产儿的CVC、PEF明显低于足月儿,其差异有非常显著性。(?)_(50)、(?)_(25)值虽低于足月儿,但差异无显著性。两组的MMEF值非常接近。过期产儿的CVC、PEF、(?)_(50)、(?)_(25)和MMEF值与足月儿相比差异均无显著性。讨论认为:对不同胎龄新生儿进行肺功能监测,有助于了解其通气储备能力,判断新生儿的高危程度和呼吸系统疾病的早期诊断和预后估计。

The pulmonary ventilative function of 57 newborn infants with different gestational age was determined with crying pulmonary function test. Preterm infants had decreased crying vital capacity (CVC) and maximal expiratory flow (V_(max)) (P<0.01). The V_(25), V_(50) and maximal medium expiratory flow (MMEF) of preterm infants were lower than those of term ones, but the difference was of no statistical significance (P>0.05). All the indexes of ventilative function of postterm infants were very close to those of term ones. We conclude that the decreased ventilative function could contribute to high morbidity and mortality of premature babies. Monitoring the ventilative function is helpful to evaluate the high-risk newborns, make early diagnosis and assess the Prognosis of respiratory diseases of newborn infants.