a 36-year-old woman presents with numbness of her arms and legs for 2 hours. she is status post total thyroidectomy 3 days prior to presentation and is on thyroid hormone replacement therapy. vital signs are normal and the patient's exam is significant for a clean, well-healing surgical incision on her neck and twitching at the corners of the mouth with tapping at the angle of the jaw. after intravenous repletion of the suspected electrolyte disorder the patient remains persistently low. what is the next step in management?
