Catheterization laboratory, or cath lab, technician is a professional who works in the field of cardiovascular technology. Cath lab techs are vital team members who assist doctors during invasive cardiovascular procedures such as angioplasty, cardiac catheterization, and electrophysiology.

Cardiovascular technologists spend most of their working time in operating rooms. Although many of the procedures they assist with have become routine, cath lab technicians work in high-stress situations due to the fact that should complications arise, the patient can be quickly placed in a life-threatening position. Prior to surgery, the cath lab tech is responsible for ensuring the EKG equipment is in working order, and during the procedure, the technologist will monitor the EKG readouts and keep the doctor apprised of anything considered abnormal. The technologist will also prepare the patient for the procedure by cleaning, shaving, and, in the case of cardiac catheterization for angioplasty, anesthetizing the area of insertion.