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  • Title: [Present status of IVOX device].
    Author: Terada Y.
    Journal: Rinsho Kyobu Geka; 1994 Dec; 14(6):461-4. PubMed ID: 9423123.
    Abstract:
    IVOX was named as an acronym for intravascular oxygenator. The device does not need a blood pomp like an extracorporeal membrane oxygenator (ECMO), and performs intracorporeal gas exchange to be a small elongated, hollow fiber membrane oxygenator designed to lie within the subject's venae cavae so that circulating venous blood can flow freely over and around the external surfaces of the hollow fibers. The amount of gas exchange in IVOX is less than ECMO, however, the equipment is simple and there is no effect to hemodynamics and body temperature. IVOX has been utilized in the management of 165 clinical trials patients in 31 international critical care centers. Currently the gas transfer rate by means of the IVOX device constitutes 1/4 to 1/3 the total metabolic requirement of adult acute respiratory failure patients. Therefore, intentional hypoventilation to limit airway pressures (mild permissive hypercapnia) is recommended to improve CO2 removal with increasing mixed venous CO2 concentrations. In the future, improvements of design, function, and methods of utilization of IVOX device are expected to increase the amount of gas exchange and to enlarge the indications for its use.
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