The phrase "ambulance bypass" is correct and usable in written English.
It is typically used in medical or emergency services contexts to refer to a situation where ambulances are directed away from a hospital due to capacity issues or other operational reasons.
Example: "Due to the high volume of patients, the hospital has implemented an ambulance bypass protocol to manage incoming emergencies more effectively."
Alternatives: "emergency diversion" or "hospital bypass".
When a former Osasco mayor, Celso Giglio, who built the hospital named for his father, was severely injured in a car accident, the ambulance bypassed Osasco's hospital and took him to Albert Einstein Hospital in São Paulo, a more costly, private institution.
When it was initially announced, there was some concern about the possibility of longer patient transport times, as ambulances bypassed some hospitals to reach those that offered cooling therapy.
In a hub-and-spoke system, a doctor-staffed ambulance can bypass a spoke centre unfit to treat the patient and head straight to a higher-level facility that can provide definitive care, thus sparing valuable time.
Apparently, his legs had been so badly mangled that an ambulance was bypassing the aid station and taking him directly to Erbil.
After a two-month review, the committee concluded that Mr. Monserrate resisted Ms. Giraldo's pleas to call an ambulance that night and bypassed nearby Elmhurst Hospital Center, instead taking her more than 10 miles to Long Island Jewish Medical Center.
Doctors and nurses who continue to staff the near-empty hospital have complained of seeing their medical resources go to waste, as longtime patients sought to be admitted, only to be turned away, and ambulances were forced to bypass the emergency room.
A 41-year-old man suffered hypothermic cardiac arrest after water immersion and was transported to our university hospital by ambulance helicopter for rewarming on cardiopulmonary bypass.
The next morning, my dad was taken to the emergency room by ambulance along a route that has become all too routine after quadruple bypass surgery and several mini-strokes.
The fact that some groups of patients are cared for in separate EDs (children with medical conditions and patients with obstetric/gynecologic, psychiatric, or ophthalmologic complaints) and others bypass the ED in fast tracks (patients with STEMI diagnosed in the ambulance and patients with suspected hip fractures) is important to note when comparing results to other EDs.
