This observational study is enrolling women only who are undergoing a heart catheterization with planned percutaneous coronary intervention (PCI) using the Shockwave . A heart catheterization is a procedure in which a long thin tube called a catheter is directed through an artery to your heart, to look for blockages in the heart arteries. If there is a blockage that needs opening, a PCI can be performed to open the blockage. This study involves collecting data only from women participants who undergo a heart catheterization and PCI using the Shockwave IVL System. IVL stands for intravascular lithotripsy. The Shockwave IVL System is approved for use and commercial sale by the Food and Drug Administration. (FDA). Participation in this study will take about 3 years. Participants will be seen before the procedure, during the procedure, before hospital discharge following the procedure, and then seen in clinic or contacted by phone at 30 days, 1,2 and 3 years. This study will collect data from each of these visits including demographic data, medical history and medications, lab results, ECG results, procedure details, and any complications if applicable.