Non-rebreathable mask, partially rebreathable mask, and venturi mask are different types of face masks used in medical treatment for administering oxygen to patients.
Non-rebreathable mask is named so because it is designed to prevent mixing of atmospheric air or the air exhaled by the patient with the oxygen. This type of mask allows up to 90% concentration of oxygen to be delivered to the patient. However, too much administration of oxygen can also cause medical problems, hence it is used only when specifically prescribed and with proper medical attention.
Partially rebreathable mask block the intake of the atmospheric air only partially. Use of such masks result in patient breathing about 40% to 60% concentration of oxygen.
Venturi mask is is a mask that uses a mechanical vent that increases the rate of flow of oxygen into the mask. This type of mask increases the supply of total oxygen for breathing, but the concentration of oxygen supplied is about just 24% to 28%
The first two types of masks,partial rebreather mask and a non-rebreather mask, are used in therapy with oxygen and belong to the tank category masks. These devices provide inspiration of the oxygen amounts below the usual amount of about 30 liters per minute.The two types of masks have a similar form, that both possess a pouch reservoir, filled with oxygen, and can provide oxygen concentrations higher than usual masks. The difference between the two masks is the existence of valves in non-rebreather mask, which are placed,one above a reservoir bag, inside the mask, and the other one, outside the mask, their goal being the release of expired CO2 ot of the mask.
Venturi mask it is a disposable mask, also used in oxygen therapy, whose project is based on the Venturi principle(narrowing of the inside diameter of a tube resulting in increased flow of fluid passing through the tube and a pressure difference) and allows administration of precise amounts of oxygen.
A non-rebreathable mask, is a device that requires oxygen therapy used in medical emergencies. A non-rebreathable mask requires that the patient can breathe unassisted, but unlike a nasal cannula, the non-rebreather mask allows for the delivery of higher concentrations of oxygen.
A partial rebreathable mask, is a white plastic mask with thin elastic string that covers half the face. This mask is a hard plastic version of mask and attaches by means of an elastic thread around the head.
The venturi mask, is a respiratory therapy face mask designed to allow inspired air to mix with oxygen, which is supplied through a jet at a fixed concentration. It is also known as an air-entrainment mask, to deliver a knownoxygen concentration to patients on controlled oxygen therapy. Venturi masks are considered high-flow oxygen therapy devices.