Identifying and definitional attributes
|Metadata item type:||Data Element|
|Short name:||Emergency department ambulance offload delay time|
|Synonymous names:||Ambulance ramping time|
The amount of time, measured in minutes, between when ambulance crews have waited more than 15 minutes from triage time while having a patient under their care until the time the emergency department takes the responsibility for the care of the patient.
Ambulance offload delay occurs when an ambulance crew and patient arrive at the emergency department and the patient is required to wait and under the care of the ambulance crew for more than 15 minutes until the emergency department has the capacity to accept or treat the patient.
|Data Element Concept:||Emergency department stay—ambulance offload delay|
Value domain attributes
|Maximum character length:||5|
|Unit of measure:||Minute (m)|
Data element attributes
Collection and usage attributes
|Guide for use:|
A patient is considered to have Ambulance Offload Delay (AOD) when they are still under the care of ambulance crew 15 minutes after their arrival to the emergency department. The amount of time spent AOD is set to zero at the 15 minutes mark, consequently a patient under the care of ambulance crew and located at the emergency department for 20 minutes would be considered to have an AOD of 5 minutes.
([StaySegmentEndDateTime] - [ArrivalDateTime]) when > than 15 or 30 minutes* and the [LocationDescription] field is Ambulance waiting.
* an ambulance offload delay time of over 15 minutes being below 15:59 seconds and over 30 minutes being below 30:59 seconds.
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