Venturi masks are used to deliver constant, high levels of oxygen to patients, especially when carbon dioxide levels are important, according to ATI Nursing Education. The venturi mask delivers a higher flow of oxygen than a nasal cannula, which is the other primary method of delivering oxygen, states the American Thoracic Society.
Venturi masks deliver a predetermined flow of oxygen that is determined by entrainment ports, which are color-coded, claims ATI Nursing Education. The different ports each allows different concentrations of oxygen flow, even though the oxygen flow from the wall is constant. The standard flow rates are 24 to 40 percent oxygen, according to the American Thoracic Society.
The venturi masks are designed to cover the both the nose and mouth. They have outlet holes at the bottom of the mask, notes ATI Nursing Education. These outlet holes allow the carbon dioxide which the patient exhales to exit, therefore the stale air does not accumulate. This is ideal for patients who are retaining carbon dioxide, such as patients suffering from chronic obstructive pulmonary disease.
The administration of oxygen may increase the life span of patients who suffer from COPD, states Healthline. Patients on oxygen therapy experience other benefits too, which include better-quality sleep and more energy.