A small patent ductus arteriosus might not cause complications. Larger, untreated defects could cause:
- High blood pressure in the lungs (pulmonary hypertension). Too much blood circulating through the heart's main arteries through a patent ductus arteriosus can lead to pulmonary hypertension, which can cause permanent lung damage. A large patent ductus arteriosus can lead to Eisenmenger syndrome, an irreversible type of pulmonary hypertension.
- Heart failure. A patent ductus arteriosus can eventually cause the heart to enlarge and weaken, leading to heart failure, a chronic condition in which the heart can't pump effectively.
- Heart infection (endocarditis). People who have structural heart problems, such as a patent ductus arteriosus, are at a higher risk of an inflammation of the heart's inner lining (infectious endocarditis) than are people who have healthy hearts.
Patent ductus arteriosus and pregnancy
Most women who have a small patent ductus arteriosus can tolerate pregnancy without problems. However, having a larger defect or complications — such as heart failure, arrhythmias or pulmonary hypertension — can increase the risk of complications during pregnancy. If you have Eisenmenger syndrome, pregnancy can be life-threatening.
If you have a heart defect, repaired or not, discuss family planning with your doctor. In some cases, preconception consultations with doctors who specialize in cardiology, genetics and high-risk obstetric care are needed. Some heart medications can cause serious problems for a developing baby, and it might be necessary to stop or adjust the medications before you become pregnant.
Dec. 16, 2014
- What is patent ductus arteriosus? National Heart, Lung, and Blood Institute. http://www.nhlbi.nih.gov/health/health-topics/topics/pda/. Accessed Oct. 20, 2014.
- Patent ductus arteriosus. The Merck Manual Professional Edition. http://www.merckmanuals.com/professional/pediatrics/congenital_cardiovascular_anomalies/patent_ductus_arteriosus_pda.html?qt=patent%20ductus%20arteriosus&alt=sh. Accessed Oct. 20, 2014.
- Doyle T, et al. Clinical manifestations and diagnosis of patent ductus arteriosus. http://www.uptodate.com/home. Accessed Oct. 20, 2014.
- Doyle T, et al. Management of patent ductus arteriosus. http://www.uptodate.com/home. Accessed Oct. 20, 2014.
- Planning for pregnancy. Centers for Disease Control and Prevention. http://www.cdc.gov/preconception/planning.html. Accessed Oct. 22, 2014.
- Riggin EA. Decision Support System. Mayo Clinic, Rochester, Minn. July 10, 2014.