“…This is because it is simply impossible to ask (temporarily) incapacitated patients for informed consent [ 1 , 5 , 23 , 33 , 34 , 36 , 38 , 40 , 43 , 45 , 47 – 95 ]. Patient populations often mentioned in this context are those with acute head or brain injuries [ 5 , 25 , 34 , 38 , 39 , 74 , 96 ], and comatose, unconscious or sedated patients [ 49 , 92 ], although a much wider range of relevant patient populations has also been named [ 40 , 58 , 60 , 63 , 65 , 66 , 97 – 105 ].…”