Having been to the doctors with the wife this morning we were directed back to the hospital CCU for further blood tests.
This time wife had time to get bits together for a stay in hospital including chewing gum, reading material and knitting.

We are now home again after they simply took another armfull of blood and told her they were specifically looking for evidence of a heart attack. We will know the results at 18:00, so now it's just a question of waiting.