chapter  4
8 Pages

Monitoring Patients Undergoing CO2 Angiography

WithGrace Peterson, Kyung J. Cho

Carbon dioxide has been used as an angiographic contrast medium for more than five

decades (1-6). The gas is well tolerated when injected intra-arterially or intravenously

in amounts up to 50 cc. CO2 has eliminated the risks of contrast induced renal failure

and hypersensitivity reactions. In a large number of procedures using CO2 as a contrast

agent, no episodes of renal failure or adverse effects of CO2 have been noted. CO2 is

often used as a preferred contrast agent in various angiographic and interventional

procedures because of its unique physical properties including low viscosity and buoy-

ancy. Medical grade CO2 USP should have a CO2 concentration of 99.5%. As the CO2 USP is marked on the CO2 tank provided, we do not identify the purity of the gas

before it is used for angiography.