golden hour
period of time following a traumatic injury during which there is the highest likelihood that prompt medical and surgical treatment will prevent death
en-US/ˈɡoʊldən ˈaʊɚ/
en-GB/ˈɡəʊldən ˈaʊə/
period of time following a traumatic injury during which there is the highest likelihood that prompt medical and surgical treatment will prevent death