Problem: You are the respiratory therapist working the 7:00 AM to 7:00 PM shift at a 400-bed urban medical center. You are assigned to provide care for a 38 year-old male patient who was admitted last evening for generalized weakness, blurred vision and difficulty swallowing. The patient is 178 cm (5' 10") tall and weighs 80 kg (176 lb). The physician writes an order for the respiratory therapist to evaluate the patient and report the findings to him. You confirm the order and proceed to the patient's room.