Basics of the Cath Lab: Resources for CVPs, Fellows, and the Cath Curious (Coronary Interventions 101)-Coronary Intravascular Lithotripsy (IVL)

Video Transcription

Video Summary

Dr. Huda and Dr. Tushar Mishra review coronary intravascular lithotripsy (IVL), a balloon-based therapy that uses sound waves to fracture both superficial and deep calcium. It is particularly useful for circumferential, nodular, or eccentric calcification and selected under-expanded stents, and can complement other calcium-modification techniques.<br /><br />The system includes a generator, cable, and rapid-exchange catheter. Proper preparation is essential: fully de-air the balloon using a 1:1 saline–contrast mixture, size it to the vessel, and inflate at low pressure—typically 4 atmospheres. Intravascular imaging helps assess calcium before treatment, confirm fractures afterward, and optimize stent deployment.<br /><br />IVL is generally safe, with a short learning curve and usually no need for temporary pacing. Operators should monitor ECG and blood pressure, use shorter pulse sequences when patients may not tolerate balloon occlusion, and take care with eccentric calcium or prior stents. Potential issues include difficult delivery, transient bradycardia, dissection, slow flow, or rare balloon rupture; checking connections and generator charge can resolve equipment problems.

Asset Subtitle

Amit Hooda, MD, FSCAI and Tushar Mishra, MD

Keywords

coronary intravascular lithotripsy

calcium modification

intravascular imaging

balloon-based therapy

stent optimization