A 45-year-old client with bipolar disorder is admitted to the psychiatric unit for management of manic symptoms. The client has been receiving high-dose haloperidol for the past three days. On assessment, the nurse notes fever, diaphoresis, tachycardia, and lead-pipe rigidity. What would the nurse prioritize in the client's plan of care?
A. Administering a stat dose of dopamine agonist.
B. Preparing for the immediate transfer to the intensive care unit (ICU).
C. Recommending electroconvulsive therapy (ECT) for rapid stabilization.
D. Discontinuing all antipsychotic medications and providing supporting care.