Pentobarb coma nurse to patient ratio

I recently cared for a patient whom was induced in a pentobarb coma while currently on vec. This was a very sick patient.

I'm curious of other hospitals standards for patients in a pentobarb coma, or a patient with a vec gtt. We have standards of care as to how to induce the coma etc., but I'm curious as to if anyone has standards of patient to nurse ratio?

Does anyone here know the standards of care for ICU patients requiring pentobarb comas? I curious as the general census of other hospital ICUs and how they accomadate nurse to patient ratio.

Thanks