English to French Medical Medical (general)

J'ai posé sur le fil Kudoz anglais une question sur la différence entre ces deux termes lorsque l'on parle de procédures opératoires. La réponse fournie par une collègue me convainc pleinement, mais je reste perplexe quant à l'appellation officielle utilisée ici dans les hôpitaux (au Québec). Quelqu'un a-t-il cette info? Des références sont les bienvenues.

Voici la réponse fournie en anglais :

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"We will define emergent as the need to proceed to surgery
immediately (within several hours), once the decision has
been made that surgical intervention is necessary or of
potential benefit. Urgent cases, on the other hand, must be
performed in a timely manner, but there are cases in which
delay until the next day or later is allowable and without
undue risk to the patient."
(books.google.com/books?isbn=0865777691...)
Emergent surgery - Surgery for a condition which is
immediately life-threatening. Surgery must be performed
within a few hours.
Urgent surgery - Surgery for a condition that is
potentially life-threatening. Surgery usually must be
completed within 24 hours.
(http://www.surgeryinfo.org/glossary.html)

Emergent Care
If you have an Emergency Medical Condition such as
difficulty breathing, suspected heart attack, uncontrolled
bleeding, unconsciousness or severe burns, try to use a
contracting hospital emergency room to maximize your
benefits.
Urgent Care
An urgent care situation is an unexpected illness or injury
that needs prompt medical attention, but is not an immediate
threat to your health. Examples include........
(https://www.phsystems.com/Members/Pages/UrgentvsEmergentCare...

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Merci d'avance