A charge nurse in the emergency department is assigning acuity levels to four clients. To which of the following clients should the nurse assign an acuity level of 1?

A. A cough and mild fever suggest a non-life-threatening illness, appropriate for a lower acuity level. B. A client with stroke-like symptoms that began 30 minutes ago requires immediate intervention to preserve brain function and potentially administer thrombolytic therapy. This is a life-threatening emergency and qualifies as acuity level 1. C. A twisted ankle is a minor injury and does not require immediate life-saving intervention. D. An oxygen saturation of 93% in a client with COPD may be acceptable and not emergent.