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Transcatheter management of patent ductus arteriosus in sick ventilated small infants
Bhava R J Kannan1, Sivadasan Radha Anil, Sumanta Shekar Padhi
1Department of Cardiology, Amrita Institute of Medical Sciences and Research Centre, Kochi.
Insights
Transcatheter coil closure effectively treated large patent ductus arteriosus in ventilated infants. This minimally invasive procedure offers a promising alternative to surgery for critically ill neonates.
Area of Science:
- Pediatric Cardiology
- Interventional Cardiology
- Neonatology
Background:
- Large patent ductus arteriosus (PDA) in infants can lead to congestive heart failure and necessitate mechanical ventilation.
- Surgical intervention is the traditional approach for PDA in this vulnerable population.
- This study explores transcatheter coil closure as an alternative treatment for PDA in mechanically ventilated infants.
Observation:
- Five infants (960g-4.1kg, 17 days-3.5 months) with PDA, congestive heart failure, and pneumonia required mechanical ventilation.
- Echocardiography confirmed PDA (1.8-4.2 mm) with adequate ampulla in all cases.
- Coil closure was performed using bioptome-assisted delivery.
Findings:
- Successful PDA closure was achieved in all five infants.
- Two instances of coil embolization occurred but were successfully retrieved and redeployed.
- All infants were weaned off mechanical ventilation within 24-72 hours.
- One preterm infant experienced a transient Doppler gradient, which resolved over time.
- No significant pulmonary artery obstruction was observed, and all infants were asymptomatic at 3-month follow-up.
Implications:
- Transcatheter coil closure is feasible for moderate-to-large PDAs in sick, ventilated infants under 5kg.
- This technique presents a potentially less morbid alternative to surgical PDA closure in selected high-risk neonates.
- Successful coil closure can facilitate faster recovery and extubation in critically ill infants.
Background:
Large patent ductus arteriosus can present in infancy with congestive cardiac failure and superadded pulmonary infection can necessitate mechanical ventilation. Surgical intervention is traditionally indicated for this subset of patients. We present our experience of transcatheter coil closure of the patent ductus arteriosus in such infants.
Methods And Results:
Five infants weighing between 960 gm and 4.1 kg, aged between 17 days and 3 1/2 months were mechanically ventilated because of congestive cardiac failure with pneumonia. Echocardiography showed patient ductus arteriosus with a size of 1.8 to 4.2 mm and adequate ampulla. Bioptome-assisted coil delivery was done and successful patient ductus arteriosus closure was achieved in all. There were two instances of embolization of coils with successful retrieval and redeployment. All infants could be weaned off mechanical ventilation over the next 24-72 hours. A pre-term infant developed a Doppler gradient of 25 mmHg in the descending aorta that decreased to 12 mmHg five months later. There was no significant obstruction to pulmonary artery flow in any child. At three months follow-up, all the five infants were asymptomatic with no residual flow across the patient ductus arteriosus.
Conclusions:
Transcatheter coil closure of moderate to large patent ductus arteriosus is possible in sick ventilated infants weighing below 5 kg. It may be a better alternative to surgery in selected cases in view of minimal morbidity.
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