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Developmental sequelae in premature infants undergoing ligation of patent ductus arteriosus
Insights
Surgical ligation of patent ductus arteriosus (PDA) in premature infants is safe and effective short-term. Long-term follow-up shows these infants are not at increased risk for sensorineural handicaps.
Area of Science:
- Neonatal surgery
- Pediatric cardiology
- Developmental pediatrics
Background:
- Patent ductus arteriosus (PDA) is common in premature infants.
- Surgical intervention is sometimes necessary for PDA management.
- Long-term developmental outcomes after PDA ligation require further investigation.
Purpose of the Study:
- To evaluate developmental sequelae in infants following on-unit ligation of PDA.
- To assess the safety and efficacy of PDA ligation in premature infants.
- To determine long-term risks for sensorineural handicaps post-PDA ligation.
Main Methods:
- Retrospective examination of 116 infants undergoing PDA ligation.
- Assessment of motor and mental development, growth, and specific complications.
- Follow-up duration averaged 20.7 months chronological age.
Main Results:
- 65% of survivors showed normal motor and mental development.
- 58% experienced postnatal growth retardation; 15.5% had moderate to severe impairments.
- No left arm dysfunction or PDA recurrence; mild sensorineural handicaps in 20 infants.
Conclusions:
- Surgical PDA ligation is safe and effective in the short term for premature infants.
- Long-term follow-up indicates no increased risk of sensorineural handicaps.
- While most infants develop normally, vigilance for growth and developmental issues is warranted.
Abstract:
One hundred sixteen infants who underwent on-unit ligation of patent ductus arteriosus (PDA) were examined for developmental sequelae. Mean gestational age of the study group was 29.1 weeks; mean birth weight, 1,232 gm; and mean duration of follow-up, 20.7 months (chronological age). Seven infants died of severe bronchopulmonary dysplasia (4) and severe central nervous system dysfunction (3) before they were 3 years old. Sixty-five percent of the remaining infants exhibited normal motor and mental development, although 58% showed some degree of postnatal growth retardation. There was no evidence of left arm dysfunction caused by the thoracic incision; 3 infants had minor problems with nonabsorbed sutures at 3 to 6 months of age. No infant demonstrated recurrence of ductal patency. Mild sensorineural handicaps not expected to be of long-term importance were noted in 20 infants. Eighteen other infants (15.5%) were classified as having moderate to severe impairments, which may have substantial impact on development and ability to function. Surgical ligation of PDA in premature infants has been shown to be safe and effective in the short run. Long-term follow-up suggests that infants who undergo PDA ligation do not appear to be at increased risk for sensorineural handicaps.