Long term effects of artificial ventilation in neonates

Area of Science:

• Neonatal Medicine
• Pediatric Pulmonology
• Respiratory Physiology

Background:

• Artificial ventilation is crucial for neonates but may have long-term consequences.
• Bronchopulmonary dysplasia (BPD) is a known complication of neonatal respiratory support.

Purpose of the Study:

• To evaluate the long-term respiratory effects of prolonged mechanical ventilation in children.
• To assess the prevalence of airway obstruction and bronchial hyperreactivity at school age.

Main Methods:

• A cohort of 27 children with >5 days of neonatal ventilation was reassessed at school age.
• Pulmonary function tests (PFTs) and bronchial provocation tests with histamine were performed.
• Correlation analysis was used to assess relationships between ventilation duration, birth weight, gestational age, and respiratory outcomes.

Main Results:

• 5 children had a history of bronchopulmonary dysplasia.
• 7 children experienced >10 upper respiratory tract infections annually; 9 had recurrent obstructive airway disease.
• 19% of tested children (n=23) showed airway obstruction, and 43% exhibited bronchial hyperreactivity.
• Bronchial hyperreactivity significantly correlated with the duration of neonatal ventilation (p<0.05).
• Hyperreactivity severity also correlated with lower birth weight and gestational age (p<0.005 and p<0.02, respectively).

Conclusions:

• Prolonged neonatal mechanical ventilation is associated with long-term bronchial hyperreactivity.
• Premature and low birth weight infants are particularly susceptible to these adverse respiratory outcomes.
• These findings highlight the need for careful monitoring of respiratory health in children with a history of extended neonatal ventilation.