Examination of the jugular veins may reveal elevated pressure (jugular venous distention).

They are most commonly found in patients with portal hypertension, or elevated pressure in the portal vein system, which may be a complication of cirrhosis.

When the deflagration begins, a zone of significantly elevated pressure travels outward through both air masses as a compression wave.

When measured for plastics, autoignition temperature can also be measured under elevated pressure and at 100% oxygen concentration.

Special air handlers filter the air and maintain a slightly elevated pressure.