This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
[{'content': "You have initiated 'Magpie' regime for a patient with eclampsia. Later you notice that the respiratory rate is 6/minute and the tendon reflexes are not elicitable. What is the next appropriate step? \nSelect and explain. \nA. Inject naloxone at the rate of 0.01 mg/kg over 5 minutes, B. Inject calcium gluconate 10 ml over 10 minutes, C. Inject 0.4 mg Atropine IV, D. Inject 5 mEq/kg sodium bicarbonate IV over 10 minutes", 'role': 'user'}, {'content': 'Answer: B \nExplanation: This is a case of MgSO4 toxicity and so the antidote is IV Calcium gluconate. Respiratory rate <14/minute or absent tendon reflex or urine output of Ref: Oxford Handbook of Clinical Specialities, Edition 8, Page - 49', 'role': 'assistant'}]