I currently work as a bedside/charge nurse in cardiovascular critical care, and we love our students! As already stated, you will have a chance at seeing every type of ICU patient under the sun on CV. Our students love how broad-spectrum our patients are! Open-hearts are the majority of our patient load, some units include heart transplants, lung transplants and VADS. My best advice to you is to tuck that anxiety under your belt and jump in! Check out the different types of machines (CRRT, arctic suns, VADS) and the plethora of lines (Pulmonary Artery caths, SVV monitors, lumbar drains). Enjoy the experience, and use your staff nurse for all the info you could ever need!