What Is "air in the Urinary Bladder"?

The use of catheters and other medical instruments is the most common cause of air in the urinary bladder, according to the University of Virginia School of Medicine. The condition is also known as intravesical air and can be difficult to detect with traditional medical imaging technologies.

The urinary bladder holds urine until it is disposed of through urination, notes Wikipedia. The organ is located at the bottom of the pelvis.