New RN on Cardiac Stepdown...Help with Med resources?

Hi all,

I'm a new grad RN on a SD Cardiac/Vascular Unit. We get alot of s/p caths, pacemakers, AAA, Afib, etc. on our unit. I have become quite familiar with our regular meds and the parameters for those. I have been looking for a resource to summarize my cardiac meds. For example: which ones are typically used for specific diagnosis, prolonged QT intervals, where in the cardiac cycle they work, etc. Any help with this would be greatly appreciated. Thank You!