What are the Centers for Disease Control and Prevention (CDC) guidelines for OR air exchanges per hour?
a. 1015 with 20 fresh outside air
b. 1015 with 90 filtered recirculated air
c. 2025 with 20 fresh outside air
d. 2025 with 90 filtered recirculated air
Question 2
Which type of ventilation system provides a supply of clean air and reduces contaminants and fumes from the OR?
a. negative, bidirectional
b. negative, unidirectional
c. positive, bidirectional
d. positive, unidirectional
