Nitric oxide delivery devices comprise a chamber (33) carrying a gas transfer member (40). An interior chamber (44) of the gas transfer member (40) is in fluid communication with a gas source (60, 62) and the outer wall surface of the gas transfer member (40) is in fluid communication with blood flowing through the chamber (33). The gas transfer member (40) permits the gas to pass through or diffuse through the member from the interior chamber (44) to the chamber (33) carrying the blood so that the blood becomes infused with the gas. Nitric oxide and oxygen can be diffused through the same gas transfer member. Alternatively, nitric oxide can first be passed through a first gas transfer member and into the blood followed by oxygen being passed through a second gas transfer member and into the blood. Alternatively, oxygen can first be infused into the blood followed by nitric oxide.
