Optimising Cardiopulmonary Bypass Utilizing Continuous Oxygen Saturation Monitoring

Proper management of cardiopulmonary bypass requires the analysis of both arterial and venous blood gases at regular intervals, and is most critical during the rewarming phase. 3,4 In some hospitals blood gas results are received as long as 15 to 30 minutes after the sample is drawn. More frequent blood gas analysis or ideally continuous measurement of oxygen saturation allows the perfusionist to make continuous adjustments as the patient’s oxygen requirements change. Two hundred patients were selected for study. One hundred were perfused using regular periodic blood analyses. A second group of one hundred patients were perfused utilizing an in-line saturation meter. The blood flow rate was 6% lower during hypothermia and 5% lower while warm in the group utilizing the saturation meter. The total gas flow rate was reduced by 20% while cold and 16% while warm in the metered group. The CPB arterial and venous pO2 RANGES were reduced with the use of the oxygen saturation meter. The same make of hybrid oxygenator was utilized on all patients in both study groups. Based on the close correlation of the oxygen saturations afforded by the saturation meter and those measured by the blood gas laboratory, we found the Bentley Oxygen Saturation Meter reliable and accurate. It may help protect the patient from extremes in oxygenation and allows the perfusionist to regulate the oxygenator in the most precise and efficient operation

Crack Detection on Composite and Metallic Aerospace Structures - Abstract Only

Peer reviewed: YesNRC publication: Ye

Retrogression and Reaging of Al 7075-T6 SCC Susceptible Parts (RRA_3) Progress Report - January 2000

NRC publication: Ye

Corrosion Fatigue Durability Assessment of Fuselage Skin Splices

Peer reviewed: YesNRC publication: Ye

Corrosion Fatigue Durability Assessment of Fuselage Skin Splices

Peer reviewed: YesNRC publication: Ye