Related Experiment Videos
Lethal lung hypoplasia in infants after prolonged rupture of membranes
P W van Dongen1, J Antonissen, H W Jongsma
1Department of Obstetrics and Gynaecology, St. Radboud Hospital, Nijmegen, The Netherlands.
Insights
Prolonged rupture of membranes (ROM) before 34 weeks gestation rarely causes lethal lung hypoplasia. However, ROM before 20 weeks with persistent oligohydramnios is a strong predictor of lung hypoplasia.
Area of Science:
- Obstetrics and Gynecology
- Neonatal Medicine
- Fetal Development
Background:
- Prolonged rupture of membranes (ROM) is a significant obstetric complication.
- Lung hypoplasia is a serious condition that can lead to infant mortality.
- The relationship between ROM duration and lung hypoplasia requires further investigation.
Purpose of the Study:
- To determine the frequency of lethal lung hypoplasia in infants born after prolonged ROM (>7 days) before 34 weeks' gestation.
- To identify risk factors associated with lung hypoplasia in this cohort.
Main Methods:
- Retrospective study of 48 cases with prolonged ROM before 34 weeks' gestation.
- Analysis of infant mortality causes, specifically focusing on lung hypoplasia.
- Correlation of gestational age at ROM, duration of ROM, and presence of oligohydramnios with lung hypoplasia.
Main Results:
- Overall mortality was 29% (14/48 infants).
- Lung hypoplasia accounted for 8.3% of deaths (4/48 infants).
- All four cases of lung hypoplasia occurred in infants with ROM before 26 weeks' gestation, associated with persistent oligohydramnios.
Conclusions:
- Prolonged ROM before 34 weeks' gestation is not a primary cause of lethal lung hypoplasia.
- Rupture of membranes before 20 weeks' gestation with persistent oligohydramnios is a strong predictor of lung hypoplasia.
- Gestational age at rupture and duration of ROM did not significantly influence lung hypoplasia occurrence, except when ROM occurred very early with oligohydramnios.
Abstract:
A retrospective study to detect the frequency of lethal lung hypoplasia in 48 cases with prolonged rupture of membranes (greater than 7 days) before 34 weeks' gestation was made. Fourteen infants died (29%), but only four deaths (8.3%) were due to lung hypoplasia. Three infants with lung hypoplasia had their membranes ruptured before 20 weeks' gestation and showed echoscopically a persistent oligohydramnios, as did the one with rupture at 26 weeks. Neither the duration of rupture of membranes nor the gestational age at the time of rupture showed any influence on the occurrence of lung hypoplasia. The rupture of membranes before 20 weeks' gestational age with resulting persistent oligohydramnios will certainly lead to lung hypoplasia.