What would be the problem if a heart patient with pnemonia whom is allso on a heart transplant list is havingw

what woul be the most serious part of this patients struggle a heart transplant patient with a pace maker in his chest whom is all so on the trans plant list is sick with pneumonia and has had in just two days 13 liters of fluid drained from his chest and is on two courses of antibiotics being given in his IV.