What criteria would warrant full spinal motion restriction?

Full spinal motion restriction is warranted when there is a risk of spinal injury, particularly in the context of potential neurological compromise. In the case of patients who are confused and intoxicated, their ability to accurately assess their own condition diminishes, and they may not report any symptoms related to a spinal injury. Intoxication can also lead to motor function impairments and a lack of coordination, increasing the likelihood of an unrecognized cervical or spinal injury.

Due to these factors, full spinal motion restriction is indicated as a precautionary measure to prevent further injury while the patient's condition is assessed. This is particularly critical because, in situations of confusion and intoxication, crucial information that would normally guide the decision-making process regarding spinal injury may not be reliable.

The other options do not indicate the same level of risk. In patients with a GCS of 15, they are awake and alert, and generally would not need spinal motion restriction unless other indicators of injury are present. Similarly, patients with no alteration in sensation or those over three years old with a clear mental status may not present immediate concerns for spinal injury, and therefore full spinal motion restriction is not necessary in those cases.