I think most people think that a DNR note means do not resuscitate in any circumstances.
DH was recommended to sign one after his heart bypass. We didn't because we could think of many circumstances where if he collapsed we would want him resuscitated. It is only recently, 5 years after his operation, that then the true meaning of a DNR note was explained - and he promptly signed it.
When you have pypass surgery they split the centre of the rib cage and the bones should fuse together again after the operation. For complicated reasons his breast bone has never fused and the usual cardiac resuscitation, would kill him instantly as his breast bone and ribs would immediately collapse into his chest cavity.
Starmerās plan to ban under 16ās from social media




