This study looks at a treatment for pulmonary embolism (PE), which is when a blood clot blocks blood flow in the lungs. The study is called PE-TRACT. It tests if using a tube (catheter) to remove the clot along with medicine to thin the blood (anticoagulation) is better than just using medicine alone. The study is for people with submassive PE, which means the clot is big enough to cause some symptoms but not life-threatening right away. You need to be over 18, and your heart needs to be affected in a certain way to join.

• The study involves 500 people and compares two treatments.
• You can't participate if you have severe health issues or are pregnant.
• Participants must be able to agree to join the study (give consent).