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New Interpretation of Neonatal Outcomes by Phenotypically Classified Preterm Syndrome: A Retrospective Cohort Study
Dan Lv1, Yan-Ling Zhang1, Yin Xie1
1Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
Current Medical Science
|August 9, 2023
Summary
This study identified distinct preterm birth phenotypes and their association with adverse neonatal outcomes, highlighting the need for phenotypical classification to improve preterm birth management. Some interventions did not benefit all neonates.
Area of Science:
- Obstetrics and Gynecology
- Neonatal Medicine
- Perinatal Epidemiology
Background:
- Preterm birth etiology, classification, and diagnosis remain incompletely understood, hindering global efforts to reduce rates.
- Phenotypical classification of preterm birth syndromes is crucial for understanding associated neonatal outcomes.
Purpose of the Study:
- To evaluate the association between phenotypically classified preterm syndromes and neonatal outcomes.
- To determine the extent to which obstetric interventions modify these outcomes.
Main Methods:
- Retrospective cohort study of 900 pregnant women and 1064 neonates.
- Utilized two-step cluster analysis to identify eight distinct preterm birth phenotypes.
- Assessed associations between phenotypes and short-term adverse neonatal outcomes, including effects of interventions like glucocorticoids, magnesium sulfate, and progesterone.
Main Results:
- Eight preterm birth phenotypes were identified, including PPROM, abnormal amniotic fluid, placenta previa, mixed condition, fetal distress, PE-E&HELLP, multiple fetus, and no main condition.
- Phenotypes like abnormal AF, mixed condition, PE-E&HELLP, and multiple fetus were risk factors for small-for-gestational-age neonates.
- Specific phenotypes were linked to adverse outcomes such as low APGAR scores, intraventricular hemorrhage, and NICU admission; not all neonates benefited from interventions.
Conclusions:
- Different preterm birth phenotypes independently increase the risk of adverse pregnancy outcomes.
- Proposes a paradigm shift towards phenotypical classification of preterm birth.
- Emphasizes the need for multi-center studies to define preterm phenotypes and elucidate underlying mechanisms.
