Q The humidity in our ORs recently was more than 70 percent, and we postponed some surgery while we brought it down to the recommended 50 to 60 percent. However, I have yet to find a textbook that states whether it is higher or the lower humidity that should concern us. Should we hold up surgery if humidity levels are either too high or too low?

A Delaying surgery for humidity levels that are extremely high or low can prevent many infection control and safety problems involving healthcare workers and patients.