What is Patent Ductus Arteriosus (PDA)?

PDA is a common congenital heart defect in dogs (and less commonly in cats). It involves the persistence of a fetal blood vessel (ductus arteriosus) after birth, allowing abnormal shunting of blood from the aorta to the pulmonary artery.

• Pathophysiology:

  • Normally, the ductus arteriosus closes shortly after birth, becoming the ligamentum arteriosum.
  • In PDA, the ductus remains open, causing continuous left-to-right shunting of blood.
  • Result: Volume overload in the pulmonary circulation and left heart chambers.

• Clinical Signs:

  • Continuous murmur heard over the left base of the heart.
  • Bounding pulses.

• Diagnosis:

  • Echocardiography and angiography confirm PDA.

• Treatment Options:

  • Surgical Ligation: Closure of the ductus via surgery.
  • Interventional Device Occlusion: Minimally invasive technique.

• Post-Op Care:

  • Pain management.
  • Close monitoring during recovery.

• Benefits:

  • Corrects the defect.
  • Excellent outcome if treated promptly.

 

Remember, always consult a veterinarian for personalized advice tailored to your pet’s specific needs.