Hang in there Paul. Look on the time in hospital as being an investment in your future. The alternative could have been having no future at all. I know how you feel....... it was bad enough for me after my heart attack having to stay in for an extra 24 hours to enable a check on additional medication to be made, so I can see how you are going stir crazy.
Set your sights on getting well and do a bit of summit planning if you can which will pay dividends in the long term.
Best wishes for a swift and complete recovery,