@pattier, what did you learn from your oncologist? Do you know about cardio-oncology?

Cardio-oncology offers expertise in addressing heart problems, potential or current issues during cancer treatments. At Mayo Clinic for example, 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 inquire if this is available where you get care.