Observational studyBMC cardiovascular disorders2026
Association between blood urea nitrogen-to-albumin ratio and postoperative acute kidney injury in patients undergoing off-pump coronary artery bypass grafting: a retrospective observational study.
Observational study in BMC cardiovascular disorders, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
Abstract
backgroundAcute kidney injury (AKI) is a common complication after off-pump coronary artery bypass grafting (OPCABG). Although the blood urea nitrogen-to-albumin ratio (BAR) has shown prognostic value in other settings, its association with postoperative AKI in OPCABG remains unclear.
methodsMultivariable logistic regression was used to evaluate the association between BAR and postoperative AKI. Predictive performance was assessed using receiver operating characteristic (ROC) analysis and calibration, with internal validation by bootstrap resampling. Incremental value was evaluated using net reclassification improvement (NRI), integrated discrimination improvement (IDI) and decision curve analysis (DCA). Inverse probability of treatment weighting (IPTW) and sensitivity analyses were conducted to examine robustness.
resultsBAR was independently associated with postoperative AKI, both as a continuous variable (per 1-standard deviation [SD] increase: odds ratio [OR] 1.90, 95% confidence interval [CI] 1.58–2.27) and as a categorical variable (BAR≥ 0.2 mmol/g: OR 4.56, 95% CI 2.99–6.94). This association remained robust in IPTW and sensitivity analyses. Adding BAR improved discrimination (AUC: 0.754 vs. 0.694; ΔAUC = 0.060, p < 0.001) with stable performance after bootstrap validation. Reclassification and DCA further supported its potential value for early AKI risk stratification.
conclusionsElevated preoperative BAR was independently associated with an increased risk of postoperative AKI and may serve as a useful risk marker in patients undergoing OPCABG.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.