The patient is in respiratory distress but does not have COPD.The physician wants the patient to receive the highest possible concentration of oxygen.Which of the following would best meet this criterion?

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When used as a nonrebreather,the plastic face mask with a reservoir bag delivers 60% to 100% oxygen at appropriate flow rates.This oxygen mask maintains a high-concentration oxygen supply in the reservoir bag.Frequently inspect the bag to make sure it is inflated.If it is deflated,the patient breathes in large amounts of exhaled carbon dioxide. The simple face mask is used for short-term oxygen therapy.It fits loosely and delivers oxygen concentrations from 40% to 60%.The mask is contraindicated for patients with carbon dioxide retention because it will make the retention worse.A Venturi mask is a cone-shaped device with entrainment ports of various sizes at the base of the mask.The entrainment ports adjust to permit regulation of fractional inspired oxygen pressure difference (FIO₂ from 24% to 60%.This mask is useful because it delivers a more precise concentration of oxygen to the patient.The face tent is a shield-like device that fits under the patient's chin and sweeps around the face.It is used primarily for humidification and for oxygen only when the patient cannot or will not tolerate a tight-fitting mask.

The Patient Is in Respiratory Distress but Does Not Have