Interval From Initiation of Prasugrel to Coronary Angiography in Patients With Non–ST-Segment Elevation Myocardial Infarction
Bibliographic record
Abstract
BACKGROUND: In the ACCOAST (A Comparison of Prasugrel at PCI or Time of Diagnosis of Non-ST Elevation Myocardial Infarction) trial, the prasugrel pre-treatment strategy versus placebo was associated with excess bleeding complications and no improved ischemic outcome in non-ST-segment elevation myocardial infarction (MI). Whether patients with the longest pre-treatment duration had an ischemic benefit is unknown. OBJECTIVES: This pre-specified analysis of the ACCOAST trial aimed to assess the effect of pre-treatment duration with prasugrel (time from randomization to angiography) on outcomes. METHODS: Within the 4,033 patients randomized in the ACCOAST trial, pre-treatment duration was available in 4,001 patients (99.2%). The population of the trial was divided into quartiles of pre-treatment duration (0.1 to 2.5 h, 2.5 to 3.9 h, 3.9 to 13.6 h, and >13.6 h) with an evaluation of the primary efficacy endpoint of cardiovascular death, MI, stroke, urgent revascularization or glycoprotein IIb/IIIa inhibitor bailout use. Secondary efficacy outcomes including cardiovascular death, MI, or stroke; all-cause death; stent thrombosis and safety outcomes (all coronary artery bypass graft [CABG] or non-CABG TIMI [Thrombolysis In Myocardial Infarction] major bleeding) were also evaluated at 7 days. RESULTS: The primary efficacy outcome of cardiovascular death, MI, stroke, urgent revascularization or glycoprotein IIb/IIIa inhibitor bailout use did not differ between the quartiles of pre-treatment duration in the trial population (p = 0.17 for interaction). None of the secondary efficacy outcomes were found to be dependent on pre-treatment duration. The safety outcome of all CABG or non-CABG TIMI major bleeding did not differ between the quartiles of pre-treatment duration (p = 0.37 for interaction). CONCLUSIONS: In non-ST-segment elevation MI patients, the excess risk of bleeding and the absence of ischemic benefit were consistent across the quartiles of increasing duration of prasugrel pre-treatment. (A Comparison of Prasugrel at PCI or Time of Diagnosis of Non-ST Elevation Myocardial Infarction [ACCOAST]; NCT01015287).
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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 | 0.004 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.002 |
| 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".