Oops - still ok to walk ... wonder who made the call that a landing was unavoidable. I was on two flights with passengers falling seriously ill where the captain decided not to divert. The most impressive one was a CPH-NRT flight on SK where a pax had an attack and turned blueish, fell unconscious, and his breathing went to almost nothing.
As the flight was full, they search for volunteers to sit next to that pax and we flew on for another 4+ hours until we landed in NRT. But maybe in Siberia the runways and hospitals are sparse ..?