The client taking lithium for bipolar disorder participated in a recreational game of basketball in the mental health unit gym. The client is now feeling nauseated and shaky, has blurred vision, and is finding it hard to stand. Considering this information, which action should be taken by the nurse?

A Instruct the client to sit and rest for a while in a cool place. D Alert the emergency team for the client's impending cardiac arrest. C Give the prn prescribed antiemetic with a large glass of cold water. B Call the HCP to request an order for a STAT serum lithium level.