Abstract 4146681: Effect of Sacubitril/Valsartan on the Right Ventricle after High-Risk Myocardial Infarction: Insights from the PARADISE-MI Trial
Bibliographic record
Abstract
Background: Right ventricular (RV) dysfunction is a common complication after myocardial infarction (MI) and a risk factor for adverse events. Effect of sacubitril/valsartan (S/V) on RV function in patients after MI is unknown. Hypothesis: RV dysfunction is associated with adverse events following high-risk MI and treatment with S/V attenuates adverse RV remodeling and functional impairments in high-risk post-MI patients. Aims: To compare the baseline clinical and echocardiographic parameters by quartiles of RV fractional area change (RVFAC), and to evaluate the effect of S/V (compared to ramipril) on RV size and function from randomization to 8 months in post-MI patients with LVEF≤40% and/or pulmonary congestion. Methods: Among the 5,661 participants in PARADISE-MI trial, 544 were enrolled in the echocardiographic sub-study. Baseline characteristics were assessed across quartiles of RVFAC (N=446). Cox proportional hazards model was used to assess the association between RVFAC and clinical outcomes. Treatment effects of S/V compared to ramipril on were assessed using linear regression. The primary outcome was cardiovascular (CV) death or incident HF (defined as HF hospitalization or outpatient symptomatic HF). Results: Baseline clinical characteristics were similar across quartiles of RVFAC, with the exception that patients with higher RVFAC were more likely to be female (Table 1). Higher RVFAC was associated with higher LVEF, smaller LV chamber size, and lower E/e’ ratios (Table 1). A lower baseline RVFAC was associated with a higher risk of incident HF, but not associated with a higher risk of primary outcome or CV death (Figure 1). Changes of RVFAC, RV end-diastolic area, RV end-systolic area, tricuspid annular S’, and RV outflow tract velocity-time integral from randomization to 8 months were similar in those randomized to S/V compared to ramipril. Baseline RVFAC did not modify the treatment effect of S/V on RV size or RVFAC (p-interaction > 0.16). Conclusion: In high-risk post-MI patients, a lower RVFAC was associated with worse LV systolic and diastolic function and higher risk of incident HF. Compared to ramipril, S/V was not superior in improving RV systolic function.
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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 | 0.002 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 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) | 0.003 | 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".