Final answer:
The statement about pelvic wraps that is not true is that they should only be used if the patient shows signs of shock; they are also indicated for pelvic instability or deformity and based on the mechanism of injury.
Step-by-step explanation:
The statement that is not true concerning a pelvic wrap is: It should not be used unless the patient shows signs of shock. A pelvic wrap, also known as a pelvic binder, is a device that can be applied to a patient who has suffered a traumatic injury to the pelvis. Its main function is to stabilize the pelvis, limit hemorrhage, and minimize pain. The use of a pelvic wrap is generally indicated by the presence of pelvic instability or deformity, often assessed through manual pelvic compression tests or based on the mechanism of injury (MOI). It is not reserved only for patients who exhibit signs of shock, although patients with significant pelvic injuries may develop shock due to internal hemorrhage. Therefore, pelvic stabilization should be considered even without the presence of shock if the injury severity or MOI suggests a pelvic fracture.