An example is transcatheter aortic valve replacement (TAVR). Doctors can use a catheter to remove a narrowed heart valve and replace it with an artificial valve. The placement of the catheter depends on the specific type of heart valve problem. This treatment uses a catheter and a tiny balloon to widen a narrowed heart valve. A mesh tube called a stent is sometimes placed in the artery to keep it open. The catheter is inserted in either the wrist or groin. This treatment uses a catheter and a tiny balloon to open a narrowed artery in or near the heart.
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