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BIBTEX RIS

Relationship between pre-extubation positive end-expiratory pressure and oxygenation after coronary artery bypass grafting

2015; Brazilian Society of Cardiovascular Surgery; Linguagem: Inglês

10.5935/1678-9741.20150044

ISSN

1678-9741

Autores

Daniel Lago Borges, Reijane Oliveira Lima, Marina de Albuquerque Gonçalves Costa, Thiago Eduardo Pereira Baldez, Mayara Gabrielle Barbosa e Silva, FELIPE ANDRÉ SILVA SOUSA, Milena de Oliveira Soares, Jivago Gentil Moreira Pinto,

Tópico(s)

Intensive Care Unit Cognitive Disorders

Resumo

Introduction: After removal of endotracheal tube and artificial ventilation, ventilatory support should be continued, offering oxygen supply to ensure an arterial oxygen saturation close to physiological.Objective: The aim of this study was to investigate the effects of positive-end expiratory pressure before extubation on the oxygenation indices of patients undergoing coronary artery bypass grafting.Methods: A randomized clinical trial with seventy-eight patients undergoing coronary artery bypass grafting divided into three groups and ventilated with different positive-end expiratory pressure levels prior to extubation: Group A, 5 cmH 2 O (n=32); Group B, 8 cmH 2 O (n=26); and Group C, 10 cmH 2 O (n=20).Oxygenation index data were obtained from arterial blood gas samples collected at 1, 3, and 6 h after extubation.Patients with chronic pulmonary disease and those who underwent off-pump, emergency, or combined surgeries were excluded.For statistical analysis, we used Shapiro-Wilk, G, Kruskal-Wallis, and analysis of variance tests and set the level of significance at P<0.05.Results: Groups were homogenous with regard to demographic, clinical, and surgical variables.There were no statistically significant differences between groups in the first 6 h after extubation with regard to oxygenation indices and oxygen therapy utilization. Conclusion:In this sample of patients undergoing coronary artery bypass grafting, the use of different positive-end expiratory pressure levels before extubation did not affect gas exchange or oxygen therapy utilization in the first 6 h after endotracheal tube removal.

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