Control of blood sugar due steroids

I am undergoing treatment for multiple myeloma. Prescribed Dexa steroids 20 mg once a week. On the day of taking Dexa my sugar level rises to about 365. After  2/3 days it comes to normal 100. 

Shall I take any precautions or ignore it?

I would call my Dr as soon as possible and let him know what the meds are doing to you. Record all your readings. 325 is crazy high! 

Thanks for your contribution dear fran

I think this is expected but I'm not sure what should be done about it, have to consult with your doctors.  If it's once a week, they may just let it go.  I guess there are other things that could be done, but it's way above my grade level to even speculate.

Thanks for your contribution