Subject
Adult; Female; Male; Aged; Muscle Weakness; Outpatients; Electrocardiography; Physical Examination; Diagnosis; Differential; Laboratory; Acid-Base Imbalance; Premature Ventricular Contractions; Hypokalemia – Diagnosis; Hypokalemia – Complications; Hypokalemia – Drug Therapy; Hypokalemia – Etiology; Hypokalemia – Physiopathology; Potassium – Administration and Dosage; Potassium – Drug Effects; Potassium – Metabolism