Development and validation of a nomogram for circuit lifespan of regional citrate anticoagulation-continuous renal replacement therapy in intensive care patients with acute kidney injury.

The study was done in one centre, so the model may not work in other units. The validation set came from the same centre's collected sessions, not an independent external cohort. The article does not report testing the model in practice, so it does not show that using it reduced unplanned downtime, blood loss, infection or other patient harms. The paper notes a need for further improvement at 36 and 72 hours. The nomogram gives survival probabilities but not a specific circuit lifespan threshold. The paper describes validation set sizes inconsistently, with 72 sessions in the sample-size section and 92 sessions in the results. The study measured circuit lifespan and coagulation, not patient clinical outcomes.

This work was supported by Sichuan Provincial Health Science Research Project, Sichuan Science and Technology Program and China Postdoctoral Science Foundation. The authors declared no competing financial interests or personal relationships.

Do not conclude that this nomogram will reduce unplanned circuit downtime or improve patient outcomes. The study observed CRRT sessions and built a prediction model; it did not test whether nurses using the model changed care or reduced clotting, blood loss, infection or other harms.