I'm having an ep study for ventricular tachycardia with possible icd implant. i also have crohn's disease. how worried should i be about the procedure?

You have asked this: question repeatedly in this forum over the last few weeks. You have been told repeatedly by many different health care providers that there is no additional risk associated with your conditions. In addition, in qualified hands the procedures are low risk as well. Relax! Consider obtaining psychologic counseling to help you deal with your anxiety.

Generally safe: For the most part it shouldn't be an issue. The EP study is fairly safe. The placement of the ICD is a surgery and as long as you don't have an active infection you are safe. It looks like you're not on immunomodulators so you should have minimal risk.