Can patent ductus arteriosus cause shortness of breath?

Written by Jia Qiu Ju
Cardiology
Updated on May 16, 2025
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Patent ductus arteriosus can indeed cause shortness of breath. Patent ductus arteriosus refers to a duct between the aorta and the pulmonary artery that fails to close after birth. This can cause blood from the aorta to shunt into the pulmonary artery, leading to high pressure in the pulmonary artery and causing pulmonary congestion, which can lead to pulmonary edema and symptoms such as difficulty breathing. Therefore, if the pulmonary hypertension is not severe, there might still be an opportunity for surgery. Once patent ductus arteriosus is diagnosed and if the timing is appropriate, it is recommended to perform occlusion or surgical treatment as soon as possible to prevent pulmonary hypertension and potentially inducing heart enlargement, which may trigger heart failure.

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Written by Tang Li
Cardiology
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Why does patent ductus arteriosus cause a decrease in diastolic pressure?

In patients with patent ductus arteriosus, since the aortic pressure is significantly higher than the pulmonary artery pressure throughout the cardiac cycle, there is continuous blood flow from the aorta into the pulmonary artery through the open duct, causing a left-to-right shunt. This increases the blood volume in the pulmonary circulation, causing dilatation of the pulmonary artery and its branches. The blood flow returning to the left heart system also increases, thereby increasing the load on the left heart and causing the left heart to enlarge. Due to the diastolic diversion of blood from the aorta to the pulmonary artery, the peripheral arterial diastolic pressure decreases and the pulse pressure increases.

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Written by Xie Zhi Hong
Cardiology
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Is patent ductus arteriosus related to staying up late during pregnancy?

The arterial duct refers to a continuous duct between the main trunk of the pulmonary artery and the aorta during the embryonic period of the fetus. Through this duct, blood from the placenta can be delivered to the infant's body for tissue oxygenation. Therefore, the arterial duct is originally a normal tissue in the embryo. After the birth of the infant, the majority of arterial ducts will close within a few months. If it has not closed after one year, it can be diagnosed as congenital patent ductus arteriosus. Therefore, there is no relationship between patent ductus arteriosus and staying up late during pregnancy.

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Written by Xie Zhi Hong
Cardiology
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Can patent ductus arteriosus be treated with medication?

The ductus arteriosus is a blood vessel connecting the pulmonary artery to the aorta in the fetal heart, primarily used during the embryonic stage to supply blood from the mother to the heart, thus providing sufficient oxygenated blood for fetal development and growth. Generally, the ductus arteriosus should close automatically within three months after birth. If it remains open for over a year, it may indicate a congenital heart defect known as patent ductus arteriosus. Previously, high doses of aspirin were used to treat this condition, but this treatment was not very effective. Patients with patent ductus arteriosus should instead consider minimally invasive interventional treatments to seal the duct, or surgical ligation can be performed. However, surgical ligation may cause significant trauma or scarring to the patient. The majority of cases with patent ductus arteriosus can be treated using minimally invasive methods.

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Written by Tang Li
Cardiology
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How to treat patent ductus arteriosus?

The arterial duct connects the main pulmonary artery to the descending aorta, serving as the primary channel for blood circulation during the fetal period. After birth, it generally becomes obstructed within a few months due to disuse; if it remains open after one year, it is referred to as patent ductus arteriosus (PDA). The length and diameter of an unclosed arterial duct vary, affecting hemodynamics differently, and consequently, prognoses differ. An unclosed arterial duct can easily induce infectious endocarditis; thus, even if the shunt is small, it is advisable to seek early interventional or surgical treatment. The surgery has a high safety success rate and can be performed at any age. However, surgery is contraindicated for patients who have developed secondary pulmonary artery obstruction and exhibit right-to-left shunting.

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Written by Di Zhi Yong
Cardiology
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The reasons for ventricular enlargement due to patent ductus arteriosus

Patent ductus arteriosus can lead to enlargement of the anterior heart, as it can cause enlargement of the left atrium, left ventricle, or anterior ventricle, potentially leading to heart failure, especially altering heart function. If a patient has a patent ductus arteriosus, I personally recommend getting an ECG at a hospital early and then determining a treatment plan. Currently, surgical treatment is advised to improve the condition of reduced heart function. During this time, it is still important to actively and regularly monitor changes in the patient’s blood pressure, heart rate, and pulse. If the heart rate is too fast or blood pressure is elevated, regular hospital visits are necessary for management.