Our unit sounds very similar to "AlexisRN46". But here goes:
We're a 46 bed cardiac/cardiac surgery unit. Our motto pretty much is: if they've got a heart they can come to us. That said we get pre/post PCI - with Reopro, Integrillin et. al., pull venous and arterial sheaths, pre/post op CABG/valve surgery - usually POD#1 18-24 hours out with chest tubes, external pacers, get the LOLs with A-Fib with RVR (and dementia), CHFers, sternal wound infections, complex post-surgical patients with a need for cardiac monitoring, geri-psych

, rule-out MIs, chest pain admits, pacers and AICD placements, post-EPS patients with/without ablation, dialysis patients, Tikosyn and Sotalol load patients, plus more than our fair share of medical overflow patients. We also run Amiodarone, Cardizem Lasix, Heparin, Nitro, Dopamine, Dobutamine, Integrillin, Reopro, Milrinone, Esmolol, Nisertitide and Natrecor drips, some of which are titratable by nursing based on parameters - nitro, heparin and cardizem.
We're in the process of splitting into 2 sub-units, a tele floor and a cardiac step-down unit. SDU will get the fresh hearts, the intervention patients, the sheaths etc. The tele floor will get everyone else. Days our staffing is 3-4:1 with aides for all 46 beds, very busy with admits and discharges - it's not unheard of for a nurse to discharge all their patients and get a whole new hand in one 12 hour shift. Nights we run 4:1, occ. 5:1 with 2 aides for the entire floor. They're telling us that the SDU will be 3:1 at all times.
We have unit specific teaching, like 12-leads, arrhythmia interpretation, use of the temporary external pacemakers, sheath pulling, and protocols. We're tested every year to make sure we current. Every nurse on the unit is ACLS certified, new grad have up to 6 months (for nights to get certified).
I think that sums it up...

Cheers,
Tom