Preoperative and intraoperative risk factors for impaired pulmonary oxygenation after cardiopulmonary bypass: a single-center retrospective analysis.

J Cardiothorac Surg · 2026 · PMC13214389 · PMID 42192432

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did not reach statistical significanceno p-value reported

Additionally, known predictors, such as prior pneumonia, transfusion volume, and operative duration, did not reach statistical significance, possibly due to sample size limitations [ 1 , 5 ].

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