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Prognostic value of the PaO2/FiO2 ratio determined at the end-surgery stage of a double-lung transplantation.
Clinical Transplantation 2019 January 23
INTRODUCTION: We evaluated the prognostic role of the arterial oxygen partial pressure / fractional inspired oxygen ratio (PaO2/FiO2 ratio) measured at the end of double-lung transplantation (DLT).
METHODS: This was a monocentric cohort study of all consecutive DLT patients between January 1st, 2012 and January 1st, 2016 except patients with pre-operative extracorporeal membrane oxygenation (ECMO), intraoperative cardiopulmonary bypass, post-operative ECMO, large patent foramen ovale, redo transplantation during the study period, and multiorgan transplantation.
RESULTS: 164 patients were included in the study; 45 had a PaO2/FiO2 ratio < 200, 39 a ratio in the range 200-300, and 80 a ratio >300. The risk of being in the lower ratio group is positively related to body mass index, preoperative pulmonary hypertension, and fibrosis. It is negatively related to emergency surgery, age and intraoperative institution of ECMO. There was a trend for more grade 3 Pulmonary Graft Dysfunction at day 3 in the worst PaO2/FiO2 ratio group. Mortality at 1000 days was similar for all patients and even after exclusion of patients who had required intraoperative ECMO.
CONCLUSION: PaO2/FiO2 ratio measured at the end of DLT does not forecast 1000-day mortality. This article is protected by copyright. All rights reserved.
METHODS: This was a monocentric cohort study of all consecutive DLT patients between January 1st, 2012 and January 1st, 2016 except patients with pre-operative extracorporeal membrane oxygenation (ECMO), intraoperative cardiopulmonary bypass, post-operative ECMO, large patent foramen ovale, redo transplantation during the study period, and multiorgan transplantation.
RESULTS: 164 patients were included in the study; 45 had a PaO2/FiO2 ratio < 200, 39 a ratio in the range 200-300, and 80 a ratio >300. The risk of being in the lower ratio group is positively related to body mass index, preoperative pulmonary hypertension, and fibrosis. It is negatively related to emergency surgery, age and intraoperative institution of ECMO. There was a trend for more grade 3 Pulmonary Graft Dysfunction at day 3 in the worst PaO2/FiO2 ratio group. Mortality at 1000 days was similar for all patients and even after exclusion of patients who had required intraoperative ECMO.
CONCLUSION: PaO2/FiO2 ratio measured at the end of DLT does not forecast 1000-day mortality. This article is protected by copyright. All rights reserved.
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