A patient is started on a new antipsychotic medication for his disorder. Three days later he develops altered consciousness, lead-pipe rigidity, diaphoresis and catatonia. Vital signs reveal respiratory rate of 20, temperature of 105.6 degrees F, and pulse oximetry of 95% room air. Which of the following would be the most appropriate initial intervention in this patient?
A. Immediate oral SSRI's and Benadryl
B. Supportive care with fluids and antipyretics
C. IV antibiotics and naloxone
D. Intubation and mechanical ventilation