An 80% He:20% O2 mixture is being delivered to an asthmatic patient by a nonrebreather mask through an oxygen flow meter set at 8 L/min. What is the actual flow delivered to the patient?

Which of the following statements shows that an OEC Technician has an accurate understanding of vital signs in relation to geriatric patients?

a. "The typical resting heart rate in geriatric patients is less than 60 beats per minute." b. "Fever tends to be more common and more severe in elderly patients." c. "There is no difference between the vital signs of a geriatric patient and those of a young adult." d. "Respiratory capacity is greatly reduced in geriatric patients."

How much volume is lost in the ventilator circuit when the volume is set at 500 mL, the peak in-spiratory pressure is 40 cm H2O, and the tubing compliance is 3 mL/cm H2O?

a. 380 mL c. 150 mL b. 280 mL d. 120 mL