Hi Lewis, I'm not sure if this applies in your case, but I thought I'd let you know about a specialized discipline called cardio-oncology.

Mayo Clinic offers expertise in addressing heart problems (called cardio-oncology), potential or current issues. The Cardio-Oncology Clinic (https://www.mayoclinic.org/departments-centers/cardio-oncology-clinic/overview/ovc-20442193) evaluates people prior to cancer treatment and patients who have experienced side effects due their treatment.

You might also find this Video Q&A with Thomas G. Brott, M.D. a neurologist and clinical researcher at Mayo Clinic in Florida. He talks about stroke awareness, risk factors, treatment options and prevention.
- Video Q&A about Stroke Prevention
https://connect.mayoclinic.org/event/on-facebook-live-lets-talk-stroke-prevention-with-thomas-brott-md/
The video is a few years old, but I found his explanations to be so clear and succinct. It might be a good starting point for preparing your questions for your next appointment. I'd be interested in hearing what you learn.