What are the early warning signs of PDA?

Early Signs of Patent Ductus Arteriosus in Babies

Patent Ductus Arteriosus (PDA) is a heart condition that sometimes affects newborns, especially premature infants. Normally, a blood vessel called the ductus arteriosus closes shortly after birth. When it doesn’t, it can lead to complications depending on the size of the opening.

Many babies with a small PDA may not show any symptoms at all—the condition can be silent and only detected during a routine check-up. However, when the opening is larger, signs start to appear. One of the most common symptoms is fast or labored breathing. You might notice your baby breathing rapidly, flaring their nostrils, or seeming to struggle with each breath, particularly during feeding or activity.

Another red flag is an increased frequency of respiratory infections. Babies with PDA may seem more prone to colds, bronchitis, or other lung-related illnesses because the extra blood flow to the lungs makes them more vulnerable. They might also have trouble gaining weight, tire easily during feeding, or sweat excessively—especially around the head—due to the heart working harder than normal.

Some infants may develop a heart murmur, which a doctor can hear with a stethoscope. While these symptoms can be subtle, early detection is key. If your baby seems to be breathing heavily, frequently ill, or not growing as expected, it’s important to consult a pediatrician. A simple echo or ultrasound can confirm PDA, and treatment—ranging from medication to minimally invasive procedures—can make a big difference.

With timely care, most babies with PDA go on to live healthy, normal lives. Awareness and attention to early signs can help ensure they get the support they need right away.