The biggest difference between the two units is the level of monitoring. The CVICU has much more extensive monitoring. You have to familiarize yourself with PA, CVP, and arterial lines. You will also monitor patients on the balloon pump. I would begin to get a grasp of all the different lines you will come across and understand exactly how they work as well as what they measure. You will also need to know the various drips patients will have in the CVICU. If you want to get a heads start, look up vasoactive drips and understand exactly what they do. Questions that you need to ask yourself are: does this drug increase or decrease BP, what is the half life of this drug, when should I increase the rate of the drip so as to avoid dose stacking, does the drug affect veins, arteries, or both, is this drug used for ventricular or atrial arrythmias. There are a few more questions you will need to ask yourself. I am sure you get the picture. I can fill you in more if you are interested.