My husband is recovering from heart transplant. He is still in the intensive care unit. The last time I visited, he didn't know where he was. And he said some very strange things. Can transplantation cause dementia or schizophrenia?
What you describe is typical of delirium. It has nothing to do with schizophrenia. Unless a senior doctor tells you otherwise, there is no reason to think that these problems will not resolve. Only in very rare situations, when things go terribly wrong, can dementia result from transplantation. There is nothing that you describe to suggest this.