I wanted to reach out to see what your IM max volumes are at your institution. We have adjusted to 5mL for deep IM. However, we have seen where some institutions allow for 10 mL and even up to 30 mL (e.g. Fosphenytoin IM).
We are working to standardize administration and develop a tip sheet regarding IM Magnesium Sulfate. We are trying to decide if it should be 5 or 10 mL as that would determine the number of injections received by the patient (4 vs 2 respectively). Also considering adding Lidocaine to reduce pain as well.
Would love to hear back.
Jameika Stuckey, PharmD
Univ of Mississippi Medical Center