Patent Ductus Arteriosus (PDA)

Question 1

What is Patent Ductus Arteriosus?

Answer 1

Failure of the Ductus Arteriosus to close after birth

Question 2

When does the Ductus Arteriosus close usually close?

Answer 2

12-14 hours after birth

Question 3

What to things happen if the Ductus Arteriosus remains open?

Answer 3

1. Hyper perfusion of the lung
2. Left side of heart becomes volume overloaded

Question 4

Clinical signs of Patent Ductus Arteriosus

Answer 4

• Puppies may be asymptomatic
• Loud murmur over the left base of the heart
• Exercise intolerance
• Stunted growth

Question 5

Diagnosis of PDA

Answer 5

• Echocardiology
• Radiographs
• ECG

Question 6

Treatment of PDA

Answer 6

Surgical correction