Emergency medical consultations share with other emergencies the need for prompt action, potentially without information or tools ordinarily available.
AMA J Ethics. 2016;18(5):479-484. doi:
10.1001/journalofethics.2016.18.5.ecas1-1605.
When a severely ill child comes into the emergency room, assent for emergency care is no more required than is parental permission. Conveying the needed care is the top priority.