It's really a perplexing question to me why steroids
were administered for a sinus infection
as it has no role in it and that too you had an injection form. On the top, propronolol is regularly taken by you and despite that you get tachycardia
. In this context, you need to undergo a EKG with long strip Lead II and see a cardiologist to rule out that you do not have any dysrhythmia or heart block
. Steroid injection may not be a cause for your tachycardia, as such.