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- W1012102509 abstract "Objective: to justify a comprehensive approach to preventing and correcting pulmonary oxygenizing dysfunction requiring prolonged artificial ventilation in patients operated on under extracorporeal circulation for coronary heart disease. Subjects and methods. One hundred and twenty-three patients aged 55±0.6 years were examined. The study excluded patients with a complicated course of operations (perioperative myocardial infarction, acute cardiovascular insufficiency, hemorrhage, and long extracorporeal circulation). Stimulating spirometry was initiated 2 days before surgery. An alveolar opening maneuver was performed using a continuous dynamic thoracopulmonary compliance monitoring. The parameters of lung oxygenizing function and biomechanics were analyzed. Results. In 78% of the patients, preoperative inspiratory lung capacity was 5—30% lower than the age-related normal values. After extracorporeal circulation, pulmonary oxygenizing dysfunction was diagnosed in 40.9% of cases; at the same time PaO2/FiO2 was associated with an intrapulmonary shunt fraction (Qs/St) (r=-0.53; p=0.002) and Qs/Qt was related to static thoracopulmonary compliance (Cst) (r=-0.39; p=0.03). Preoperative stimulating spirometry provided a considerable increase in intraoperative PaO2/FiO2 values (p<0.05); improved Cst and decreased Qs/Qt. After extracorporeal circulation, the incidence of pulmonary oxygenizing dysfunction was decreased by more than twice (p<0.05). Patients with relative arterial hypoxemia showed a noticeable relationship to the magnitudes of a reduction in Cst and a rise in Qs/Qt (r=0.72; p=0.008), which served as the basis for applying the alveolar opening maneuver. This type of lung support corrected arterial hypoxemia in 67% of cases. Conclusion. In car-diosurgical patients with coronary heart disease, effective prophylaxis and correction of relative arterial hypoxemia caused by the interrelated impairments of pulmonary biomechanical properties and ventilation/perfusion ratio may be ensured via preoperative stimulating spirometry and an alveolar opening maneuver early after extracorporeal circulation if indicated. The comprehensive approach allows a reduction in the incidence of pulmonary oxygenizing dysfunction that prevents early activation in the operating suite from 40 to 5—7%. Key words: early activation, pulmonary oxygenizing function, myocardial revascularization, surgery under extracorporeal circulation, tracheal extubation in the operating-room." @default.
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- W1012102509 date "2009-04-20" @default.
- W1012102509 modified "2023-09-26" @default.
- W1012102509 title "Correction of Pulmonary Oxygenizing Dysfunction in the Early Activation of Cardiosurgical Patients" @default.
- W1012102509 doi "https://doi.org/10.15360/1813-9779-2009-2-37" @default.
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