Failure of indomethacin to close persistent ductus arteriosus in infants weighing under 1000 grams
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Insights
Extremely preterm infants with persistent ductus arteriosus showed only temporary responses to indomethacin. Surgical ligation may be a safer alternative due to indomethacin
Area of Science:
- Neonatal Medicine
- Pediatric Cardiology
- Pharmacology
Background:
- Persistent ductus arteriosus (PDA) is common in preterm infants.
- Conventional medical management often fails in extremely preterm neonates.
- Pharmacological closure with indomethacin is a common treatment strategy.
Purpose of the Study:
- To evaluate the efficacy and safety of indomethacin for PDA in extremely preterm infants (<1000g).
- To compare indomethacin treatment with surgical ligation in this high-risk population.
Main Methods:
- Retrospective review of six preterm infants (<1000g) with PDA.
- Administration of indomethacin to induce ductal closure.
- Observation of treatment response, side effects, and need for surgical intervention.
Main Results:
- All infants showed a transient response to indomethacin.
- No infant achieved permanent closure with indomethacin, despite multiple doses.
- One infant experienced severe adverse events including anuria, uraemia, and gastrointestinal bleeding.
- Three infants underwent successful surgical ligation after failed indomethacin therapy.
Conclusions:
- Extremely preterm infants may be poor responders to indomethacin for PDA closure.
- Indomethacin carries potentially life-threatening side effects in this population.
- Surgical ligation should be strongly considered as an alternative to indomethacin in extremely preterm infants with PDA.
Abstract:
Six preterm infants with a persistent ductus arteriosus, who failed to improve with conventional medical management, received indomethacin in an attempt to close the duct pharmacologically. All infants weighed less than 1000 g when the drug was administered. All showed a transient response to indomethacin; however, no infant demonstrated a permanent response, even though 5 of the 6 received multiple doses. One of the patients developed a severe episode of anuria, uraemia, and gastrointestinal bleeding. Of the 6 infants, 3 underwent subsequent successful surgical ligation of the ductus. It is suggested that the extremely preterm infant may be a 'poor responder' to indomethacin. Since the side effects of indomethacin may be life-threatening, it may be wise to consider surgical ligation in lieu of indomethacin administration in these infants.
