Creating a placental inflammatory composite index that has a high prognostic relevance to child morbidity

Area of Science:

• Perinatal Medicine
• Pediatric Health
• Pathology

Background:

• Placental inflammation significantly impacts pregnancy and childhood health.
• Current methods for assessing placental inflammation are largely empirical.
• A need exists for a reliable criterion to evaluate placental inflammation's prognostic relevance.

Purpose of the Study:

• To systematically select core inflammation-related placental measures.
• To construct a novel placental inflammatory evaluation criterion.
• To establish a criterion with high prognostic relevance to child morbidity.

Main Methods:

• Utilized data from the US Collaborative Perinatal Project (1959-1976).
• Employed bootstrap resampling, least absolute shrinkage and selection operator (LASSO), and receiver-operator characteristic (ROC) curve analysis.
• Selected top placental pathologic measures associated with child morbidity to form a composite index.

Main Results:

• Ranked 26 candidate placental inflammation measures based on association with adverse neonatal outcomes.
• Identified five key measures: neutrophilic infiltration in umbilical artery, placental weight-birthweight ratio, decidual necrosis, bacterial colonization in amnion epithelium, and membrane/fetal surface opacity.
• A five-measure composite index demonstrated the highest prognostic relevance, with 1-5 lesions correlating to a 1.2- to 4.6-fold increased risk of adverse child outcomes.

Conclusions:

• Developed a simple, evidence-based composite index for evaluating placental inflammation.
• The index possesses significant predictive value for child morbidity.
• Proposed as a novel placental inflammatory evaluation criterion for clinical use.