A nurse is caring for a client in an emergency department (ED). Exhibits Which of the following findings in the client’s medical record requires follow-up by the nurse? Select all that apply

A. ECG: The presence of premature ventricular contractions (PVCs) indicates cardiac irritability, often due to hypokalemia, and requires immediate follow-up to prevent arrhythmias. B. Syncope: Syncope may result from electrolyte imbalance or cardiac dysrhythmia, both of which can be life-threatening in clients with bulimia nervosa. C. Oxygen saturation: SpO₂ is 100% on room air, within normal range. D. Blood pressure: Orthostatic hypotension (92/65 standing) is mild and expected in clients with electrolyte imbalance, but it is not the most critical finding compared to cardiac risks. E. Albumin: Low albumin (2.6 g/dL) indicates malnutrition and poor protein intake, requiring dietary intervention. F. Potassium: Hypokalemia (3 mEq/L) is a critical finding due to increased risk of cardiac dysrhythmias and muscle weakness; immediate replacement is required.