Abstract 12585: Antianginal Efficacy of Ivabradine in Patients With History of Coronary Revascularization
Bibliographic record
Abstract
Introduction: Coronary revascularization procedures are widely performed for the symptomatic treatment of patients with coronary artery disease (CAD). Even after such procedures, angina symptoms often remain. Hypothesis: To evaluate the antianginal effectiveness and the effect on quality of life of ivabradine co-administered with a β-blocker, during 4-month therapy of CAD patients with a history of coronary revascularization. Methods: This is a post hoc analysis (926 post-revascularization patients) of a Pan-Hellenic, prospective, non interventional study including 2403 patients with CAD and stable angina. Data were recorded at baseline, and at 1 and 4 months after inclusion, while patients’ quality of life was assessed by means of the EQ-5D questionnaire. Results: Of 926 CAD patients who participated in the study, 28 (3%) prematurely discontinued treatment. Addition of ivabradine decreased mean heart rate from 80.3±9.5 bpm (1st visit) to 67.8±7.3 bpm (2nd visit) and 63.9±6.2 bpm (3rd visit) (P<0.001). Mean number of angina attacks and nitroglycerin consumption decreased, respectively, from 2.2±2.3/1.5±2.2 times/week (1st visit) to 0.5±1.0/0.3±0.8 (2nd visit) and 0.3±0.6/0.1±0.4 times times/week (3rd visit) (P<0.001). Moreover, the percentage of patients with angina CCS I (Canadian Cardiovascular Society classification) increased from 36% at baseline to 83% at study completion (P<0.001), while those with angina CCS III-IV decreased from 21% to 2% (P<0.001). All dimensions of the EQ-5D questionnaire were significantly improved after 4 months of treatment with ivabradine (P<0.001) (Table 1). Compliance with ivabradine treatment was high. Throughout the trial, 884 patients (95.5%) were taking their treatment “every day” or “quite often.” Conclusions: These results confirm the antianginal effectiveness as well as the beneficial effect of ivabradine on the quality of life of patients with CAD and a history of coronary revascularization.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| 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".