Hemodialysis Prescription and In‐Hospital Cardiac Arrest in Patients With Acute Kidney Injury: A Single‐Center Study
Bibliographic record
Abstract
INTRODUCTION: Cardiac arrest is a common cause of death among patients undergoing maintenance hemodialysis; however, the prevalence and risk factors for cardiac arrest in the setting of acute kidney injury (AKI) are not studied in detail. METHODS: Patients who received hemodialysis for AKI between 2014 and 2024 were classified as those who experienced cardiac arrest during hemodialysis (group A) and patients who had cardiac arrest during hospitalization outside the hemodialysis session (group B). Logistic regression analysis was performed to determine the odds of cardiac arrest during the hemodialysis session versus outside the session. FINDINGS: Among the 1702 patients who received hemodialysis for AKI, 33 (0.02%) experienced cardiac arrest at the time of hemodialysis (group A), and 100 (0.06%) had cardiac arrest outside the session (group B). Previous history of atrial fibrillation was more common in group A (39% vs. 19%, p = 0.017). Groups were comparable in terms of oxygen or vasopressor requirement and baseline mean serum creatinine. Metabolic acidosis was more severe, and serum blood urea nitrogen and calcium levels were higher in group B (p < 0.05). Ultrafiltration rates were higher in group A than in group B (mean 10.6 mL/h/kg vs. 6.2 mL/h/kg, p < 0.001). There were more deaths in group A within the first 24 h following cardiac arrest (79% vs. 48%, p < 0.05); however, spontaneous recirculation and overall in-hospital mortality were comparable. In the multivariate regression model, atrial fibrillation (OR = 4.91, 95% CI 1.35-17.8, p = 0.016), lower pre-dialysis serum calcium levels (OR = 2.66, 95% CI 1.25-5.65, p = 0.011), and higher ultrafiltration volume (OR = 10.9, 95% CI 3.90-30.5, p < 0.001) were independently associated with an increased risk of cardiac arrest during hemodialysis sessions. DISCUSSION: History of atrial fibrillation, lower pre-dialysis serum calcium levels, and higher ultrafiltration volumes are associated with an increased risk of cardiac arrest during hemodialysis than cardiac arrest outside the hemodialysis session in the AKI setting.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".