Cardiopulmonary function in premature infants with bronchopulmonary dysplasia--a 2-year follow up

Area of Science:

• Neonatology
• Pediatric Pulmonology
• Cardiology

Background:

• Bronchopulmonary dysplasia (BPD) is a chronic lung disease in premature infants.
• Cardiopulmonary function impairment can persist beyond infancy in BPD survivors.

Purpose of the Study:

• To evaluate cardiopulmonary function in infants with BPD and controls at corrected ages of 50 and 120 weeks.
• To identify long-term respiratory and cardiac sequelae in infants with BPD.

Main Methods:

• Longitudinal assessment of respiratory system compliance, resistance, and maximum flow at functional residual capacity (VmaxFRC).
• Doppler echocardiography to assess cardiac involvement.
• Comparison between infants with BPD and premature controls.

Main Results:

• Reduced respiratory compliance and increased resistance improved with age in both groups.
• Severe peripheral pulmonary obstruction (VmaxFRC < 84 ml/s) persisted in 5/13 BPD infants at 120 weeks, compared to none in controls (VmaxFRC < 120 ml/s).
• Cardiac involvement (shortened pulmonary acceleration time) was observed in BPD infants with severe obstruction; BPD infants also had higher pulmonary morbidity, were shorter, and weighed less.

Conclusions:

• Maximum flow at functional residual capacity and cardiac evaluation are essential for monitoring infants with severe BPD.
• Persistent peripheral pulmonary obstruction and cardiac involvement are significant long-term issues in BPD.
• Early identification and management of cardiopulmonary complications are vital for improving outcomes in BPD survivors.