Patent Ductus Arteriosus (PDA)
Congenital heart condition in which a normal fetal blood vessel fails to close after birth.
Primary risk age: Newborns and infants; more common in premature babies.
- Urgency
- Moderate
- Typical age
- Newborns and infants; more common in premature babies.
- Body system
- Cardiovascular System
Typical course: Recovery from catheter closure is usually quick, within days; surgical recovery takes a few weeks.
Reviewed against AAP · CDC · WHO · NHS guidance Last reviewed 2026-06-13
1. Summary & Pathophysiology
Congenital heart condition in which a normal fetal blood vessel fails to close after birth.
Pathophysiology (Development Path)
The open vessel lets blood flow from the aorta back into the lung circulation, increasing blood flow to the lungs and workload on the heart; large shunts strain the heart over time.
Primary Causes & Etiology
The ductus arteriosus, which bypasses the lungs before birth, normally closes in the first days of life; in PDA it stays open, more often in premature infants and after congenital rubella.
2. Symptom Continuum
- Early Onset Signs
Often none with a small PDA; a heart murmur may be the only finding.
- Progressive Phase
With a larger PDA: fast breathing, sweating or tiring during feeds, poor weight gain, and frequent chest infections.
- Severe Indicators
Signs of heart failure — marked breathlessness, poor feeding, and failure to thrive — need prompt cardiology care.
3. Clinical Verification
Detection of a characteristic murmur followed by echocardiography, which confirms the diagnosis and measures the size of the shunt.
4. Care & Elements Plan
Primary Care Treatment Plan
Small PDAs may close on their own or simply be monitored. In premature infants, medication may help closure; significant PDAs are closed with a catheter procedure or surgery.
Home Support Elements
Attend cardiology follow-up, support feeding and growth, watch for breathing or feeding difficulty, and keep up with routine vaccines and good dental care.
Generic Active Ingredients (No Brands)
- Ibuprofen or indomethacin (active ingredients used in premature infants to promote ductal closure, under specialist care)
- catheter device closure or surgical ligation (definitive procedures).
Lists active elements only. Never administer self-designed therapies.
5. Doctor Critical Lines
Critical Thresholds: When to See a Doctor
See a doctor for fast breathing, sweating or tiring with feeds, poor weight gain, or any concern raised at newborn checks; attend all cardiology appointments.
6. Vaccine & Prevention
Routine Prophylaxis (Prevention)
Rubella vaccination of future mothers prevents PDA caused by congenital rubella; most PDA is not preventable.
Immunization Context
Routine immunizations are important; some children with heart conditions also receive RSV protection in infancy.
7. Timelines & Outlook
Active Timeline
Recovery from catheter closure is usually quick, within days; surgical recovery takes a few weeks.
Expected Prognosis
Excellent after closure; small PDAs often need only monitoring.
Potential Untreated Complications
Heart failure, recurrent chest infections, poor growth, and a small long-term risk of heart-valve infection (endocarditis).
More in Congenital Structural Heart Defects (CHD)
Moderate Ventricular Septal Defect (VSD)
Congenital Acyanotic Left-to-Right Shunt Heart Malformation
Neonates and Infants (Often detected in the first few weeks of life)
Severe Tetralogy of Fallot (TOF)
Cyanotic Congenital Heart Disease (Right-to-Left Shunt)
Infants and Toddlers (Cyanosis often presents in the first few weeks or months)
Moderate Atrial Septal Defect (ASD)
Congenital opening in the wall between the heart’s two upper chambers.
Present from birth; often detected in childhood or sometimes later.