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Early predictors of mortality in very low birth weight neonates
1Department of Pediatrics, Maulana Azad Medical College, New Delhi 110 002, India. medha@del3.vsnl.net.in
Insights
Early predictors of mortality in very low birth weight (VLBW) neonates include birth weight, shock, and need for mechanical ventilation. These factors, identified within the first 24 hours, help assess mortality risk in VLBW infants.
Area of Science:
- Neonatalogy
- Pediatric Critical Care
- Perinatal Medicine
Background:
- Very low birth weight (VLBW) neonates face significant mortality risks.
- Identifying early predictors is crucial for timely intervention and improved outcomes.
Purpose of the Study:
- To identify early predictors of mortality in hospital-born VLBW neonates (500-1500 g).
- To analyze the predictive value of birth data, physiological alterations, and interventions within the first 24 hours of life.
Main Methods:
- A case-control study design was employed in a teaching hospital setting.
- 115 VLBW newborns were enrolled and followed for 28 days or until death.
- Data analyzed included birth weight, gestation, Apgar scores, respiratory support, shock, hypoxia, acidosis, and the CRIB score.
Main Results:
- Factors significantly associated with early neonatal mortality included low birth weight, low Apgar scores, need for ventilation/oxygen, shock, hypoxia, and acidosis.
- Multivariate analysis identified low birth weight, shock, mechanical ventilation, acidosis, and high alveolar-arterial oxygen gradients as significant predictors.
- Birth weight <1200g was found to be as effective as the CRIB score in predicting mortality risk.
Conclusions:
- Disturbed cardio-pulmonary physiology within the first 24 hours, particularly the need for mechanical ventilation, increases early mortality risk in VLBW neonates.
- Early identification of these physiological derangements is vital for risk stratification and management of VLBW infants.
Objective:
To evaluate early predictors of mortality in very low birth weight neonates.
Setting:
Teaching hospital.
Design:
Case control study.
Methods:
Hospital born very low birth weight newborns (500-1500 g) enrolled for study and followed up till death or 28 days. Infants' birth data and data on physiologic alterations, investigation and interventions in the first 24 hours of life and CRIB score were analyzed for their ability to predict neonatal mortality.
Results:
115 subjects were enrolled into the study of which 47 died in the neonatal period. The factors significantly associated with early neonatal mortality included birth weight, gestation, low Apgar scores, need for assisted ventilation at birth, need for supplemental oxygen and mechanical ventilation in the first 24 hours, presence of shock, hypoxia and acidosis (p < 0.05). The factors associated with late neonatal mortality were birth weight and gestation only. Multivariate analysis of these factors showed that besides low birth weight, shock, need for mechanical ventilation, acidosis and high alveolar-arterial oxygen gradients were significant predictors of neonatal mortality. When compared with the CRIB score, birth weight <1200g proved to be an equally good predictor of mortality risk.
Conclusion:
VLBW neonates with disturbed cardio-pulmonary physiology during the first 24 hours of life, especially those in need of mechanical ventilation, are at an increased risk of early neonatal mortality.