they seem to change the icp bolts if they have been in for longer than a week because they found the reading/trace becomes unreliable/inaccurate. however we seldom have to do this as it is rare for the bolts to remain in for much longer in our unit....
Our practice is much the same as RoxanRN2003. We also zero ICP transducers as well as A lines and CVPs at the beginning of each shift. The bolts occassionally get inserted by the Registrar aseptically in the ITU but more often than not they get inse...