Dexamethasone and CPAP for Pneumonia Patients

I recently completed a call for a patient with suspected pneumonia. We put the patient on CPAP and there was some improvement. We didn’t give the patient any nitro due to her having a fever and recent history of a cough so decided the best course was treating it as pneumonia. We did give the patient 8mg of dexamethasone and when we were talking about the call afterwards, we realized there could be some questioning about our decision to give dex. Our thoughts behind it were that since it was a steroid for breathing issues, pneumonia would be applicable since there can be some constriction with the infection. Her crackles were too coarse to hear any constriction and there was some confusion from staff on scene as to whether the patient had COPD or not so we decided that it would only benefit the patient. In our call review, we realized it probably would have been more prudent to call BHP since it wasn’t a clear cut situation. Just wondering what your thoughts are on this call and how we treated it. Thanks