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Heart failure as an endpoint in heart failure and non-heart failure cardiovascular clinical trials: the need for a
Faiez Zannad1, Wendy Gattis Stough, Bertram Pitt
1Hypertension and Preventive Cardiology Division, Department of Cardiovascular Disease, Centre d'Investigations Cliniques INSERM-CHU, INSERM U684, Hôpital Jeanne d' Arc, 54200 Dommartin-les-Toul, Nancy, France. f.zannad@chu-nancy.fr
Insights
Consistent definitions for heart failure (HF) are lacking in cardiovascular trials, hindering data interpretation. This paper proposes a standardized definition to improve the assessment of HF events and interventions.
Area of Science:
- Cardiology
- Clinical Trials
- Biostatistics
Background:
- Myocardial infarction (MI) and stroke have defined criteria in cardiovascular trials.
- Heart failure (HF) lacks a consistent definition across clinical studies.
- Inconsistent HF definitions complicate data interpretation and intervention assessment.
Purpose of the Study:
- To examine challenges in defining heart failure events in cardiovascular clinical trials.
- To propose a standardized definition for heart failure events.
Main Methods:
- Literature review of existing heart failure definitions in clinical trials.
- Analysis of the impact of definitional variability on trial outcomes.
- Development and proposal of a consistent heart failure event definition.
Main Results:
- Significant variability exists in current heart failure definitions.
- This variability impacts the comparability of trial results.
- A proposed definition aims to standardize heart failure event assessment.
Conclusions:
- A unified definition for heart failure is crucial for cardiovascular research.
- Standardization will enhance the interpretation of trial data and intervention effects.
- The proposed definition addresses the need for consistency in heart failure event reporting.
Abstract:
Specific criteria have been established to define the occurrence of myocardial infarction (MI) and stroke in cardiovascular clinical trials, but there is not a consistent definition for heart failure. Heart failure events appear to occur at a rate that is similar to stroke and MI in trials of hypertension, hyperlipidaemia, diabetes, and coronary heart disease, yet a consistent approach to defining heart failure events has not yet been realized. The wide range of definitions used in clinical trials makes it difficult to interpret new data in the context of existing literature. This inconsistency has led to challenges in determining the incidence of heart failure in cardiovascular studies and the effects of interventions on these endpoints. This paper examines issues related to defining heart failure events in cardiovascular clinical trials and presents a definition to formally address this issue.
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