I've done tele/medsurg "flexing" up to six patients. It is hard but doable. Drips, PCU level patients, running charge, no breaks, drawing your blood and everyone else's with a full assignment, sounds like an absolute disaster. This is completely unsafe. I would be updating my resume yesterday. I agree you need to run. I do think you sound like a great nurse who should have no problem finding a better job. Good luck!