Which type of medications is oxygen commonly used as a drive gas to administer?

Oxygen is commonly used as a drive gas in the administration of nebulised medications because the nebulisation process converts liquid medication into a fine mist that can be inhaled directly into the lungs. When nebulised, oxygen can help increase the flow and delivery of medication, ensuring that it reaches the lower airways efficiently. This method is particularly beneficial for patients with respiratory conditions, as it allows for rapid absorption and a targeted therapeutic effect.

In contrast, oral, intravenous, and sublingual medications do not require the use of oxygen as a drive gas. Oral medications are taken by mouth and absorbed through the digestive system, intravenous medications are delivered directly into the bloodstream through a vein, and sublingual medications are absorbed under the tongue. Each of these routes uses different methods of administration that do not involve the nebulisation process or reliance on oxygen as a drive gas.