The patient is admitted to the hospital with systemic syphilis infection. The patient is ordered to receive a 14-day course of penicillin G 20 million units/day intravenously. Prior to administering the medication, the nurse checks the patient’s allergies and learns the patient experienced anaphylaxis after receiving ampicillin. Which action does the nurse take?

The patient presents to the emergency department with altered mental status and myoclonic jerking. Although the nurse notes that the patient is flushed and his face is red, his skin and mucous membranes are dry and warm to the touch. The nurse also notes decreased bowel sounds and palpates a distended bladder. Vital signs are significant for a temperature of 39.9°C (103.8°F), heart rate of 122 bpm and a blood pressure of 165/92 mm Hg. The nurse prepares to administer which of the following medications to this patient?

The patient who takes milk of magnesia every day is at risk for which electrolyte imbalance?