National Center for Competency Testing (NCCT) Medical Assistant Practice Test

Oxygen can be administered to a patient by which of the following methods?

1. Intravenous line

2. Cannula, catheter, or tent

3. Oral ingestion

4. Subcutaneous injection

The correct answer is: Cannula, catheter, or tent

Oxygen can be administered to a patient through methods such as a cannula, catheter, or tent because these methods are specifically designed to deliver respiratory gases directly to the patient. A nasal cannula provides a steady flow of oxygen directly into the nostrils, which is comfortable and allows for movement. A catheter can be used for delivering oxygen directly into the trachea if needed. An oxygen tent is a breathable tent or canopy that helps to increase oxygen concentration around the patient, useful for treating conditions that require higher oxygen levels. The other methods listed are not appropriate for oxygen administration. An intravenous line is used for delivering fluids, medications, and nutrients but not for gas exchange. Oral ingestion is for medications or nutrients and does not apply to oxygen, which needs to enter the respiratory system directly. A subcutaneous injection involves injecting substances into the fat layer below the skin and does not facilitate the delivery of oxygen, which must be absorbed through the lungs for systemic use.