We have thirteen patients max though we are not always full. We try to keep the ratio at 1:4, so I schedule three nurses a shift. We don't always have CNA in the unit but on high census days we float a CNA to help. We don't always have vent patients, but when I have trouble staffing is when we get vent patients and I am scrambling to get an additional nurse to help out. If I schedule four or five nurses regularly when there are no vent patients, I will run into trouble meeting budget. Any ideas?