CO2 uses

1-Laproscopic surgery
2-To minimise the air embolism during cardiac surgery
3-debubbling of cardiopulmonary circuits
4-carbogen/meduna mixture-95%o2+ 5% co2(for treatment of central retinal artery occlusion)
5-to facilitate vasodilatation
6-to prevent hypocapnia during hyperventilation
7-gynec inv-insuflation of fallopian tubes
8-destruction of warts by freezing
9-increases cerebral blood flow
10-stimulate respiration
11-chronic respiratory obstruction
12-increase the depth of anaesthesia
13-to facilitate blind intubation in anaesthesia practice