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Duration of hyperventilation and outcome in infants with persistent pulmonary hypertension
1Department of Pediatrics, State University of New York-Health Science Center, Syracuse 13210.
Insights
Prolonged mechanical ventilation for persistent pulmonary hypertension in infants is linked to adverse neurodevelopmental outcomes. Longer hyperventilation duration correlates with poorer outcomes in these vulnerable newborns.
Area of Science:
- Neonatal Medicine
- Pediatric Neurology
- Respiratory Physiology
Background:
- Persistent pulmonary hypertension of the newborn (PPHN) is a critical condition requiring intensive respiratory support.
- Mechanical ventilation, including hyperventilation, is a common strategy for managing PPHN.
- The long-term neurodevelopmental effects of PPHN management strategies require further investigation.
Purpose of the Study:
- To assess the growth and neurologic development of infants diagnosed with PPHN.
- To determine the association between hyperventilation duration and neurodevelopmental outcomes in this cohort.
- To identify risk factors for adverse outcomes in infants with PPHN.
Main Methods:
- Serial assessments of growth and neurologic development were conducted on 21 infants with PPHN up to 12 months corrected age.
- Data on the duration of mechanical ventilation, specifically hyperventilation, were collected.
- Statistical analysis was performed to correlate hyperventilation duration with physical and neurologic outcomes.
Main Results:
- Seven infants (30%) experienced adverse physical outcomes within the first year.
- Four infants (19%) had severe neurologic impairment, while seven had mild to moderate delay.
- Infants with abnormalities required significantly longer hyperventilation (124 +/- 52 hours) compared to those without (60 +/- 53 hours).
Conclusions:
- Prolonged hyperventilation in infants with PPHN is associated with poorer neurodevelopmental outcomes.
- The duration of mechanical ventilation, particularly hyperventilation, is a critical factor influencing long-term neurologic development in PPHN survivors.
- These findings highlight the need for careful management of ventilation strategies in PPHN to optimize infant neurodevelopment.
Abstract:
Twenty-one infants with the diagnosis of persistent pulmonary hypertension had serial assessments of growth and neurologic development through 12 months of corrected age. Seven infants (30%) had one or more adverse physical outcomes during the first year of life. Four infants (19%) had severe neurologic impairment; seven babies had mild to moderate delay, and 11 babies were found to have no abnormality. Adverse outcome was related to significantly to the duration of hyperventilation, such that the infants without and with abnormalities spent 60 +/- 53 hours and 124 +/- 52 hours hyperventilated, respectively (P less than .01). Our results show that the need for prolonged hyperventilation in infants with persistent pulmonary hypertension is associated with poorer neurodevelopmental outcome.