Key result
Post-CPB lung injury is linked to ~89% lower odds of extubation after valve surgery.
Why the study?
To determine pulmonary functional changes that predict early clinical outcomes in valve surgery requiring long cardiopulmonary bypass.
Do PaO2/FiO2 and AaDO2/PaO2 measured two hours after cardiopulmonary bypass predict the duration of mechanical ventilation and length of stay in patients undergoing valve surgery?
Population
225 consecutive patients undergoing non-emergency valve surgeries with fast-track cardiac anesthesia
Comparison
Serial blood gas analyses before and 0, 2, 4, 8, and 14 h after CPB
Design
Retrospective study
Authors
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Post-CPB lung injury may aid risk stratification after valve surgery; leaves open whether preventive strategies shorten ventilation time.
Cohort (n=225)
No
Do PaO2/FiO2 and AaDO2/PaO2 measured two hours after cardiopulmonary bypass predict the duration of mechanical ventilation and length of stay in patients undergoing valve surgery?
Hazard Ratio: 0.107 (95% CI 0.023–0.506)
p-value: p=0.005
Pulmonary function parameters (PaO2/FiO2 and AaDO2/PaO2) measured two hours after cardiopulmonary bypass are useful predictors of ventilation time and hospital stay in patients undergoing valve surgery.
Murata et al. (2021) conducted a cohort in Valve surgery requiring cardiopulmonary bypass (n=225). Post-cardiopulmonary bypass lung injury (PCLI) vs. No PCLI was evaluated on Prolonged duration of mechanical ventilation (DMV) (HR 0.107, 95% CI 0.023-0.506, p=0.005). Post-cardiopulmonary bypass lung injury was an independent predictor of prolonged mechanical ventilation (HR 0.107) in patients undergoing valve surgery.
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