Every hospital is different, but mine has a cardiac stepdown/progressive unit that sounds similar. Most acute post-cath intervention patients go there if they are stable enough to not need ICU. Nurses there do sheath pulls, drips, BIPAP, etc. All patients are on tele monitoring with bedside and central monitors. The acuity can be high at times. It's a great stepping stone for ICU; many nurses in my cardiac unit have come from there.