Which of the following is a criterion for status 1 adult patients?

• A. New onset of GCS less than 13 or 2 less than normal GCS
• B. Respiratory rate less than 10
• C. Acute SpO2 less than 90
• D. Systolic BP less than 90

Answer: (A)

A sudden change in level of consciousness is used to flag the most urgent patients. The Glasgow Coma Scale measures how awake and responsive someone is, with normal brain function scoring a full 15. If a patient newly presents with a GCS below 13, or if their GCS falls by 2 points from their baseline, that signals a meaningful deterioration in brain function and elevates them to status 1, meaning immediate attention is needed.

This neurologic criterion is chosen because a drop in consciousness can occur with life-threatening injuries or illnesses that require rapid intervention, even if other vitals aren’t yet severely abnormal. While a very low respiratory rate, a dangerously low oxygen saturation, or a systolic blood pressure under 90 can indicate instability, they do not define status 1 on their own in this context; the defining trigger here is the recent or new neurologic change reflected by the GCS.