Insufflation (medicine)

The most common gas used in this manner is carbon dioxide, because it is non-flammable, colorless, and dissolves readily in blood.

Gases can be insufflated into parts of the body to enhance radiological imaging[2] or to gain access to areas for visual inspection (e.g. during colonoscopy).

It is used with patients with neuromuscular disease and muscle weakness due to central nervous system injury.

The time of onset for systemic drugs delivered via nasal administration is generally only marginally slower than if given intravenously.

Nasal administration can also be used for treatment of children or patients who are otherwise alarmed or frightened by needles, or where intravenous (IV) access is unavailable.