PDA Device Closure

Patent Ductus arteriosus

• A patent ductus arteriosus is a persistent communication between the two great arteries
  – Aorta and pulmonary artery
• In the mothers womb, developing babies have a blood vessel that called ductus arteriosus
• Ductus arteriosus closes soon after birth

Patent Ductus arteriosus

• PDA occurs when the ductus arteriosus does not close
• It is a common congenital defect
• When the PDA does not close, blood from the aorta flows into the pulmonary artery
• This causes strain on the heart on the lungs
• If untreated, it leads to breathing difficulty, respiratory infections and heart failure

PDA

Timing of Intervention: PDA

• Large PDA with PAH and symptoms: 1-3 months.
• Moderate sized PDA( 3- 4mm) : 6 months.
• Small PDA( < 3mm): 6-12 months.
• Silent PDA : no treatment.

Procedure

• A catheter is inserted into the blood vessel in your childs groin.
• Pressures in the heart and the size of the defect is assessed.
• An appropriate device is placed across the defect using a special catheter.
• The device fills the defect and the defect is closed
• The catheter is removed

Mode of closure: PDA

• 90% can be done in cath lab: coils/ device
• Current indication for surgery:
  Large ( > 4mm) PDA in a very small infant ( < 5 kg)