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A catheter has been used to remove a blood clot from the connection between your pulmonary artery and your aorta.

Major, important blood vessels branch out of the heart. The main artery (aorta), originating from the left lower chamber (ventricle) of the heart, supplies the whole body with oxygen-rich blood. The right ventricle pumps oxygen-poor blood through the pulmonary artery to the lungs, where the blood is then enriched with oxygen. Before a person is born, there is a connection between the pulmonary artery and the aorta. After being born, this connection usually closes up. In your case, the connection is still open.

A catheter is a thin tube. This tube is inserted into a blood vessel in the groin or arm, and pushed further in. Various instruments can be pushed at the front of the tube. X-ray images are taken during the treatment. These show clearly whether the tip of the tube is in the right place. A drug was used to break up the blood clot that you had.