I have a red star ‘next of kin’ symbol against all three of my children in my contacts on my phone ( always have) I think next of kin has the correct meaning
But
Do make sure you give up to date info recently at work a lady didn’t turn up for her shift knowing she’s very reliable we tried phoning, no answer, I knew where she lived, close by, so went round, still no answer, we then got worried and tried the daughter (we all give next of kin info when we join)however the number didn’t work to cut a long day short we eventually through a round about route found a number to use for the daughter and the lady had had a stoke was on the floor and been a few days unable to get to her phone She is now 2/3 months on unable to return to her home if she had been found quickly it could have been a different story
I think your friend is quite correct…. you say if you’re unconscious you just need to call a doctor or ambulance BUT the patient may have some underlying factors that change the way you look after the patient whilst waiting for the GP or ambulance to arrive, that could be hours.
Why not give the information