Patent Ductus Arteriosus
Patent ductus arteriosus is a congenital heart defect where a fetal blood vessel fails to close after birth, leading to abnormal blood flow and potential heart failure.
Detailed Description
The ductus arteriosus is a normal fetal vessel that should close shortly after birth. If it remains open (patent), it allows blood to bypass the lungs, causing volume overload of the left side of the heart and, if untreated, congestive heart failure.
Common Symptoms
- Continuous heart murmur
- Exercise intolerance
- Stunted growth
- Coughing
- Respiratory distress in advanced cases
Management Options
- Surgical ligation or minimally invasive device closure
- Medical management for heart failure if surgery is not possible
Frequently Asked Questions
Is PDA curable?
Yes, surgical or device closure is curative in most cases.
Can affected dogs live normal lives?
Yes, if treated early, most dogs have a normal lifespan.
Should puppies be screened for heart murmurs?
Yes, early detection is critical for successful treatment.
Condition Details
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Typical Age of Onset
Congenital; clinical signs usually appear in puppies under 1 year
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Testing Available
Yes
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Diagnosing Methods
Physical exam (murmur detection); Echocardiogram; Thoracic radiographs
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Preventative Measures
Cardiac screening of breeding stock; Do not breed affected dogs
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Related Conditions
Ventricular septal defect, Other congenital heart defects