DO I HAVE A CASE

Difficult, as whether the discharge would have prevented the third stroke will take review of all the records and the medication he was on, and then an expert opinion.  if by way worse he has now permanent serious physical changes and/or coginitive or other brain injury which affects him permanently then you may want to consult a lawyer and get the records.  If your husband cannot sign a medical release for the records, it may be more complicated to obtain unless in going to the hospital he signed a form indiciating that his condition can be shared with you.  In either case, you will need to have a final assessment of his condition to determine the extent of the damage or harm and if permanent.  Too many facts, but if your question is whether there is malpractice, unknown without the records being reviewed and then a medical opinion.