In the hopsital where I work, we are no longer allowed to abbreviate Q2Hr, Q4 etc... They are also enforcing this with the docs. They have to write out every 2 hr, etc.. I guess there have been errors associated with this, but I can't get where the confusion would lie.
They've also stated that morphine sulfate should be written out as such, in order to avoid confusion with MSo4. I can understand that one, but the elimination of the Q is still confusing to me.