Passive compliance of total respiratory system in preterm newborn XXXX with @entity649 .

@entity1 @entity649 @entity26 @entity17220 @entity2107 @entity91
The passive @entity17220 ( @entity91 ) was measured by the occlusion technique in 34 preterm newborn @entity1 with @entity649 . Gestational age ranged from 27 to 33 weeks. Preterm newborn @entity1 were divided into four groups on the basis of clinical criteria. Group 1 consisted of 10 @entity1 tested during the first postnatal days (1 to 3 days) while acutely ill and requiring ventilation and @entity26 therapy. After the acute phase of @entity649 , two groups were tested: group 2 consisted of nine @entity1 (5 to 22 days of age) who no longer required ventilation, and group 3 consisted of six @entity1 (7 to 28 days of age) who subsequently had @entity2107 . Group 4 consisted of nine @entity1 older than 1 month of age with confirmed @entity2107 . Group 1 had significantly lower @entity91 and @entity91 normalized for body weight ( @entity91 /BW) than group 2 had (P less than 0.001). In groups 3 and 4 @entity91 was significantly lower than in group 2 (P less than 0.001), as was @entity91 /BW (P less than 0.001). There was no significant difference in @entity91 and @entity91 /BW values between groups 3 and 4. This cross-sectional study in preterm @entity1 with @entity649 suggests that @entity91 may have predictive value in regard to development of @entity2107 after the acute phase of @entity649 .
