My mom had a balloon angioplasty. 7 days later she past away. er said she septic and had pneumonia. shouldn't they have seen this during the angio?

My condolences : Sorry for your loss. It may well be that the pneumonia developed after the cath.

Pneumonia post angio: Not necessarily. The angio could have been in the chest, pelvis, or legs. During angio the images being viewed by the docs not at all similar to a chest x-ray, typically used to diagnose pneumonia. Septicemia would not be likely to be identifiable during angio unless the patient was already showing severe symptoms to cause the team to suspect.