Hi Patient had hip surgery and wound up with c diff. Post surgery hemoglobin and hmeatocrit are low but were not prior to surgery. Potassium is low, calcium low, chloride high.Patient has no mag levels recorded. GFR and creatinine within normal limits Patient takes beta blocker at night exteneded release. only other meds are vitamins Provider ordered mag sulfate Any ideas as to why? thanks! 1 gram in 100 mls IVPB and primary 1000 mls of K/CL 60 mls/hour