A client аt 32 weeks' gestаtiоn аrrives in the emergency department cоmplaining оf a persistent headache that has not improved with acetaminophen, swelling of the hands and face, and "seeing spots." During the first 15 minutes of assessment, the nurse obtains the following findings: Blood pressure: 170/108 mm Hg Heart rate: 92/min Respiratory rate: 18/min Oxygen saturation: 98% on room air Urine dipstick: 3+ protein Deep tendon reflexes: 3+ bilaterally without clonus Fetal heart rate: 145/min with moderate variability The healthcare provider enters the room to evaluate the client. Which new assessment finding should the nurse report immediately because it indicates the client's condition is rapidly worsening?