Oxygen can be administered to a patient by which method?

Oxygen can indeed be administered through various methods, and the correct answer encompasses multiple delivery systems. Specifically, a catheter, cannula, and tent are all viable methods for oxygen administration.

A nasal cannula is a common device that allows for the delivery of oxygen directly into a patient's nostrils. This method is typically used for patients who require a low flow of oxygen. An oxygen tent is another option, which involves a canopy-like structure that encases the patient, providing a concentrated oxygen environment, useful for children or those who need more extensive oxygenation. A catheter can refer to specialized devices for more precise delivery depending on therapeutic needs.

The other options are limited in scope. For instance, administering oxygen only through a mask excludes the significant alternatives provided by devices like a nasal cannula or tent. Direct injection of oxygen is not plausible as it would not be a safe or effective method of oxygen delivery, while inhalation alone doesn’t recognize other delivery methods such as the aforementioned catheter or cannula system. Thus, recognizing the diversity of equipment available for oxygen delivery illustrates the importance of selecting the suitable method based on patient needs.