Venturi mask how much oxygen

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The clinically clean Venturi oxygen masks are designed to deliver a defined oxygen concentration. Very patient friendly The adjustable nose clip and the under-chin design increase the comfort and acceptance of these masks. Together, their superb fit and excellent seal ensure the best possible provision for patients. Elsevier Clinical Skills covers the principles of this procedure. You must follow local policies and procedures regarding technique, equipment used and documentation.

Figure 1. Oxygen cylinder. Mosby Elsevier, Edinburgh. Figure 2. Figure 3. Mask with venturi system. Learning Objective. Rationale — Oxygen is prescribed when the patient has a need and therefore the patient must be monitored to ensure that it is achieving the goal.

All rights reserved. Venturi connector colour. Oxygen should be reduced or discontinued in stable patients with satisfactory oxygen saturation levels Perry et al. Hypoxemia or hypoxia is a medical emergency and should be treated promptly. Failure to initiate oxygen therapy can result in serious harm to the patient. The essence of oxygen therapy is to provide oxygen according to target saturation rates, and to monitor the saturation rate to keep it within target range.

Although all medications given in the hospital require a prescription, oxygen therapy may be initiated without a physician order in emergency situations. Most hospitals will have a protocol in place to allow health care providers to apply oxygen in emergency situations. The health care provider administering oxygen is responsible for monitoring the patient response and keeping the oxygen saturation levels within the target range.

The most common reasons for initiating oxygen therapy include acute hypoxemia related to pneumonia, shock, asthma, heart failure, pulmonary embolus, myocardial infarction resulting in hypoxemia, post-operative states, pneumonthorax, and abnormalities in the quality and quantity of hemoglobin. There are no contraindications to oxygen therapy if indications for therapy are present Kane et al. There is a wide variety of devices available to provide oxygen support.

Delivery systems are classified as low-flow or high-flow equipment, which provide an uncontrolled or controlled amount of supplemental oxygen to the patient British Thoracic Society, Selection should be based on preventing and treating hypoxemia and preventing complications of hyper-oxygenation.

Factors such as how much oxygen is required, the presence of underlying respiratory disease, age, the environment at home or in the hospital , the presence of an artificial airway, the need for humidity, a tolerance or a compliance problem, or a need for consistent and accurate oxygen must be considered to select the correct oxygen delivery device British Thoracic Society, Table 5.

Most common type of oxygen equipment. It is convenient as patient can talk and eat while receiving oxygen. Easy to use, low cost, and disposable. Limitations: Easily dislodged, not as effective is a patient is a mouth breather or has blocked nostrils or a deviated septum or polyps. Used to provide moderate oxygen concentrations. Readily available on most hospital units. Provides higher oxygen for patients. Disadvantages: Difficult to eat with mask on. Mask may be confining for some patients, who may feel claustrophobic with the mask on.

Flow rate must be high enough to ensure that the reservoir bag remains partially inflated during inspiration. Disadvantages: These masks have a risk of suffocation if the gas flow is interrupted. The bag should never totally deflate.