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Patent Ductus Arteriosus (PDA)

Patent Ductus Arteriosus: What it is, Risk Factors, Diagnosis, Treatments | National Heart Centre Singapore

Patent Ductus Arteriosus (PDA) - What it is

​The ductus arteriosus is present in all fetuses allowing blood to bypass the non-functioning lungs. At birth or shortly after birth as the baby starts to breathe, the ductus arteriosus would normally close permanently. Failure to do so results in patent ductus arteriosus (PDA) which is an open channel allowing blood to flow from the aorta (blood vessel carrying blood from the heart to the rest of the body) to the pulmonary artery (blood vessel supplying the lung). If the PDA is large, the heart will be volume-loaded resulting in heart failure. The PDA also carries a risk of bacterial infection (infective endarteritis). PDA can be closed by inserting a device through the blood vessels in the groin (percutaneous transcatheter approach).

Patent Ductus Arteriosus

Patent Ductus Arteriosus (PDA) - Symptoms

Patent Ductus Arteriosus (PDA) - How to prevent?

Patent Ductus Arteriosus (PDA) - Causes and Risk Factors

Risk factors


Activities 

Activity restrictions are unnecessary unless there are associated problems that you and your cardiologist have discussed. However, after PDA device closure, patients will be advised to refrain from strenuous activity and heavy lifting for at least 6 months. 

Prevention of endarteritis

Antibiotic prophylaxis prior to dental or other surgical procedures is no longer recommended for patients with patent PDA to prevent endarteritis (infection of arteries). After PDA device closure or surgical ligation, antibiotic prophylaxis is still required up to 6 months depending on whether the defect has completely closed.

Pregnancy and family planning

Women with small PDA are able to carry through their pregnancy well. However, it is still important to discuss any concerns on pregnancy with the cardiologist. 

Patent Ductus Arteriosus (PDA) - Diagnosis

Diagnosis normally starts with a physical examination by a doctor, assessing your medical history and routine tests. Other tests recommended may include:

Patent Ductus Arteriosus (PDA) - Treatments

The defect can be closed by a device (see Device Closure for PDA) or surgical ligation depending on the size of the defect and the presence of pulmonary hypertension. Even after the defect is closed, the patient may need regular follow-up with a cardiologist.

Device Closure for Patent Ductus Arteriosus (PDA)

The ductus arteriosus is present in all fetuses allowing blood to bypass the non-functioning lungs. At birth or shortly after birth as the baby starts to breathe, the ductus arteriosus would normally close permanently. Failure to do so results in patent ductus arteriosus (PDA) which is an open channel allowing blood to flow from the aorta (blood vessel carrying blood from the heart to the rest of the body) to the pulmonary artery (blood vessel supplying the lung). If the PDA is large, the heart will be volume-loaded resulting in heart failure. The PDA also carries a risk of bacterial infection (infective endarteritis). PDA can be closed by inserting a device through the blood vessels in the groin (percutaneous transcatheter approach).

Patent Ductus Arteriosus (PDA) - Preparing for surgery

Patent Ductus Arteriosus (PDA) - Post-surgery care

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