Can a BLS unit cancel an ALS unit?
In general it is preferred that BLS units not cancel ALS units. It is desirable that the physical assessment and determination of the need for ALS be performed by the senior most care provider. However, if a BLS provider can provide all the patient care potentially needed by a patient (as outlined in the WREMS Adult & Pediatric Advanced Life Support Protocols) he/she may cancel an ALS unit. Additionally, if the ETA of an ALS unit is such that the patient can be transported to the Emergency department in a more timely fashion than ALS can be delivered to the patient, it would be appropriate to cancel the ALS unit and transport the patient to the emergency department. ALS should never be canceled prior to performing a complete physical exam and should never be canceled based on financial or political considerations.
