My son is keeping his weight in check with diuretics, but a cardiologist friend suggested he have a complete cardio work up because any virus, especially Covid, can cause damage. I can't push him but hope he pursues the topic at his next doctors visit. I think the dr. Just wanted to get him stabilized first. On another note, I'm noticing the majority of the long Covid symptoms are coming from people who were hit in the early Covid outbreak spring 2020!