Case: A 56-year-old man comes to the emergency room because he has developed nausea, vomiting, muscle cramps, and weakness for the last three days. Five days ago he started on potassium G for acute pharyngitis and he has been taking it regularly along with his other medications, lisinopril, atorvastatin and spironolactone. On a physical examination, you notice a middle-aged man, who is anxious and distressed. He has difficulty walking; has decreased sensations and decreased reflexes in all four extremities. Laboratory studies are notable for a potassium level of 6.8 mmol/L. An ECG was taken. Q.Which of the following medications can cause this disorder?
