Comparing two approaches to clear calcified heart artery blockages

When calcified (hardened) blockages form in heart arteries, doctors sometimes use a procedure called intravascular lithotripsy — essentially sound waves — to break up the calcium. After that, this trial is testing whether it's better to then use a drug-coated balloon or a drug-coated stent (a tiny mesh tube) to keep the artery open. Researchers want to know which approach works better and is safer for people with this type of blockage.

Calcified blockages in heart arteries are particularly tricky to treat because hardened calcium can prevent stents from expanding fully and staying in place properly. This study exists to find out whether the newer approach of using a drug-coated balloon alone might work just as well — or even better — than placing a stent, especially after the calcium has been softened with sound wave therapy.