Thanks, Brenda and Geeker.
His BP dropped below 200, currently waiting to hear from GP or consultant but didn't need small hours visit to A&E.
Now, 15a: never heard of the 3 letter doc, I think it's "I'm" = "one is", in 2-letter doc! The word is vaguely familiar as in ".... suit". Then with that final letter, and your help, 7d is obvious and brilliant: COD.
But the mysterious 26? I have a slang term for "drunk" but can't parse it, though can find most it but lacking "et" or "te"!