The oxygenator is designed to add oxygen to infused blood and get rid of some of the carbon dioxide from the venous blood. Cardiac surgical treatment became made feasible by way of CPB the use of bubble oxygenators, but membrane oxygenators have supplanted bubble oxygenators for the reason that 1980s. The principal reasons for this are that membrane oxygenators generally tend to generate many fewer micro-bubbles, known as gaseous microemboli, that’s usually considered dangerous to the affected person and decrease damage to blood cells, as compared to bubble oxygenators. More lately, the use of hollow-fiber oxygenators has emerge as more extensive. These derivatives of membrane oxygenators in addition reduce the prevalence of microemboli by using lowering the direct air-blood interface at the same time as concurrently supplying good enough gas trade.
Another form of oxygenator gaining favor lately is the heparin-lined blood oxygenator which is believed to supply much less systemic infection and reduce the propensity for blood to clot within the CPB circuit.