Original Article

Clinical Experience with the Shiley S-100 Disposable Blood Oxygenator

From the Department of Cardiothoracic Surgery, The General Infirmary, Leeds, England

Abstract

The Shiley S-100 oxygenator with an integral heat exchanger is described and data from 180 perfusions in adult patients analyzed. The oxygenator produces satisfactory pO₂ and PCO₂ values with a mean gas flow /blood flow ratio of0.87. The platelet counts following perfusion were reduced by only 40% of the pre-perfusion levels. The mean value of plasma free hemoglobin was 26.2 mg/100 ml/60 minutes of bypass. The performance of the heat exchanger was investigated in 44 patients. The mean cooling and rewarming times (from 36.5 to 29.6°C and from 29.6 to 37°C) were 0.9 and 2.2 minutes for each degree of temperature per m² surface area respectively. There have been neither mechanical-hydraulic problems with this unit during perfusion nor oxygenator related morbidity or mortality in the entire series of patients.