Wirelessly posted (Mozilla/5.0 (BlackBerry; U; BlackBerry 9360; en) AppleWebKit/534.11+ (KHTML, like Gecko) Version/7.1.0.391 Mobile Safari/534.11+)
In laymans terms. A code 3 is when a EMS unit isn't going like crazy to get to. A Code 4 is a serious call, lights and sirens, support vehicles, etc.
When the patient is looked at by paramedics, they assign the patient a numbers, from 1 to 5.
Those are CTAS levels. If the person is in cardiac arrest or horribly mangled in a car accident they are CTAS 1.
A CTAS 2 patient has a stroke, heart attack, is badly injured boarded and collared, it is important to get these patients to the hospital, even if the ER is filled to the brim the EMS unit is allowed to go where a patient is best served.
If you break an ankle playing hockey, tear up your knee, are very ill with a flu you go in CTAS, your ailment isn't life threatening but serious enough to be seen by a doctor.
CTAS 4 is cuts,scrapes, not life threatening. I assume CTAS 5 is for someone who isn't really sick, and will wait for hours to see a doctor, or a nurse.
It depends where you live, in Halton and Hamilton you will hear Code 4-1, 4-2 calls to alert the ER.
In Brant, Norkfolk, Haldimand and I think Niagara, you will hear patches to the ER's for 4-3's.