A 35-year-old woman with bipolar disorder type I is stable on lithium. She presents with polyuria, tremor and nausea. Lithium level is 1.6 mmol/L (reference 0.6-1.0). Creatinine is mildly elevated. What is the most appropriate immediate management?AContinue lithium at the same dose and review in 6 monthsBCease lithium temporarily, assess for toxicity, correct contributing factors and consider hospital admissionCIncrease lithium dose to maintain mood stabilityDSwitch immediately to valproate without monitoringEIgnore symptoms as lithium levels are rarely clinically significantCheck my answer