What Are The Possible Side Effects Of Luminex?

My mother is in the hospital because she is having an irregular heart rythym this has been going on for about 6 days & the cardiologist has ran many tests to see the cause. Right now they don t feel like she needs a pace maker but they want to give her Luminex for the next 5 days. Could you give me some information on this drug & possible side effects..Thank You...