New Onset Postoperative Atrial Fibrillation is Associated with a Long-Term Risk for Stroke and Death Following Cardiac Surgery
Why this work is in the frame
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Bibliographic record
Abstract
BACKGROUND AND AIM: We sought to evaluate the long-term impact of post-cardiac surgery atrial fibrillation on the risk of stroke and survival. METHODS: Patients undergoing isolated CABG surgery from April 1, 1995 to March 31, 2007 were identified (n = 8058). Long-term stroke data were compiled using Cox modeling adjusted for clinical characteristics comparing patients with new-onset atrial fibrillation (NwAfib) and those without. RESULTS: NwAfib developed in 2214 patients (27.5%). Overall in-hospital mortality was 2.4% and was not different between groups. Unadjusted in-hospital outcomes suggest patients with NwAfib were more likely to suffer a permanent stroke (1% vs 2.5%; p < 0.001) require prolonged mechanical ventilation (p < 0.001) and prolonged stay in hospital (p < 0.001). After discharge patients were followed for a mean of 5.7 years. Stroke was reported in 268 (12.1%) patients in the NwAfib group compared to others (8.4%). After adjustment NwAfib was independently associated with a higher risk for stroke with a hazard ratio of 1.26 (1.08-1.47; p = 0.0034) and a higher risk of death with a hazard ratio of 1.2 (1.08-1.32; p = 0.0007). CONCLUSIONS: Patients with NwAfib perioperatively have increased risk of stroke and early death after discharge independent of other clinical risk factors.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.003 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.002 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 it