DRUG_EXPOSURE conventions

CDM Builders
13

  1. nystatin.
    mg is predefined as a unit in DRUG_STRENGTH table. In RxNorm there are no any Clinical Drug Components with mg.

  2. bacitracin/ bacitracin zinc.
    mg is predefined as a unit in DRUG_STRENGTH table. In RxNorm there is just only one Clinical Drug Component with mg - bacitracin zinc 0.5 MG/MG which is used just for one single Clinical Drug - bacitracin zinc 0.5 MG/MG / Polymyxin B Sulfate 10 UNT/MG Topical Powder.

  3. Penicillin G (almost the same case like bacitracin).

And rather important that in general clinical practise these drugs are measured mostly (sometimes always) in iU. The main question: what units should we use for figures which would be inserted to the DRUG_EXPOSURE.quantity field? If source data contain all the quantities in iU should we convert them to mg and basically how?