Comment by dr_

Similar experience, although less dramatic circumstances, on a Qatar flight. I was asleep, when my wife awoke my and volunteered me to address the needs of a passenger passing out in the aisle of the plane. I asked for equipment to check his vitals. Bp was on the low side so I asked he remain supine with his legs slightly elevated. There was a lady sitting next to us who criticized my every move (she felt I wasn't getting an accurate pressure because he was laying down, but I was more concerned with maintaining his pressure than having it bottom out further). The passengers were upset he was laying in the aisle. Turns out the lady next to me was a physician as well, but she never volunteered this or assisted in any way. He eventually got better and I allowed him to return to his seat. I checked on him as we landed and left the plane. Medical services came with a wheelchair to take him off. No appreciation from the crew on this, but I guess that doesn't matter at the end of the day. barring the criticism I received for how I was handling it, the situation ended well.