Which of the following best describes how to determine relative humidity?

Upon inspection you see the letter and number combination of 3AL stamped into an oxygen cylinder’s shoulder. This means:

A heat and moisture exchanger (HME):

A nasal cannula running at 4 L/min delivers approximately what FIO2?

Dry powder inhalers (DPIs):

Which of the following aerosol delivery devices is intended to be used without an artificial airway?I. Briggs adapter (T-piece)II. face tentIII. trach maskIV. aerosol mask

A HAFOE (high air flow with oxygen enrichment) is set at 35%. What is the air-to-oxygen entrainment ratio?

A HAFOE (high air flow with oxygen enrichment) mask is set at 40%, and the oxygen flowmeter is running at 6 L/min. What is the total flow to the patient?

The DE Ecosystem must support both horizontal and vertical scalability. Horizontal scalability refers to: 

A nurse is providing dietary teaching for a client with hypertension. Which of the following food choices by the client indicates an understanding of the DASH (Dietary Approaches to Stop Hypertension) diet?