The patient with chronic airflow limitation (CAL)changed to the use of a simple face mask from a nasal cannula delivery system.The nasal equipment oxygen was set at 3 L/min.The nurse instructs the patient that,with the change in delivery systems,the oxygen should be _____ L/min.

Question

Quizplus · Accepted Answer

When changing to a mask from a nasal cannula,the oxygen should be increased by approximately 100% to get the same concentration.Simple face masks deliver approximately the same range of concentration of oxygen as the nasal cannula.However,the nasal cannula flow rates range from 1 L to 6 L,delivering 24% to 44% oxygen,whereas the simple face mask delivers 35% to 50% oxygen which is achieved with flow rates from 6 L to 12 L.

The Patient with Chronic Airflow Limitation (CAL)changed to the Use