Steroids can be very taxing on the heart. Some steroids will greatly increase your water retention. So they could work in opposition to your medication and cause complications. I’m all for the use of gear, but this is a case where you could really hurt yourself. I would suggest getting your heart back in order and then consider a low dose protocol that will not have an impact on water retention, if you feel you must use gear. It does sound though, like you would be at a higher risk for side effects and potential health issues. It’s something you should really address with a Dr that understands gear and can evaluate your situation. I would be very careful listening to anyone else, including me. I can help people get into incredible shape while minimizing risks but I’m no Dr.