Could fluid build up in the lungs mean a congenital heart problem?

Yes, fluid buildup in the lungs, also known as pulmonary edema, can be a sign of a congenital heart problem. Congenital heart problems are defects in the structure of the heart and blood vessels that are present at birth. Some congenital heart problems can cause an increased pressure in the blood vessels of the lungs, which can lead to fluid leaking into the lung tissue causing pulmonary edema. This can manifest as shortness of breath, coughing, wheezing, and fatigue. It is important to consult a doctor for evaluation if you or your child experiences persistent fluid buildup in the lungs to determine the underlying cause and receive appropriate treatment.