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New risk prediction models according to heart failure type

Literature - Ho JE et al., Circ Heart Fail. 2016

Ho JE, Enserro D, Brouwers FP, et al.
Circ Heart Fail. 2016;9:e003116


The predicted prevalence of heart failure (HF) approaches 20% of the general population worldwide, and the projected relevant medical costs are expect to double within the next 20 years [1]. Therefore, it is argued that primary prevention of HF should actively focus on high-risk patients [2], which in turn highlights the importance of the accuracy of HF risk prediction models.

Some HF risk prediction models do not take into account HF subtypes, and most of them lack external validation [3]. The differentiation between HF subtypes, namely HF with preserved ejection fraction (HFpEF) and HF with reduced ejection fraction (HFrEF), in HF risk prediction models is important, since different phenotypes, distinct causes, and individual therapeutic approaches have been reported for each type [4,5]. Hence, it is hypothesised that there are also different risk predictors for HFpEF and HFrEF [6,7].

In this study, specific risk profiles by HF subtype were evaluated, in 4 longitudinal community-based cohorts with 22,142 participants, based on which, separate risk prediction models for HFpEF and HFrEF were developed and validated. The Framingham Heart Study (FHS) [8,9], Cardiovascular Health Study (CHS) [10] and Prevention of Renal and Vascular End-stage Disease (PREVEND) [11] were used for derivation and internal validation and the Multi-Ethnic Study of Atherosclerosis (MESA) [12] was used for external validation.

Main results

The final HFpEF-specific risk model included age, sex, systolic blood pressure (SBP), body mass index (BMI), antihypertensive treatment, and previous myocardial infarct (MI).
The relative risk of HFpEF increased by:
  • 90% per 10 years of age (HR: 1.90; 95% CI: 1.74–2.07)
  • 14% per 20 mm Hg SBP (HR: 1.14; 95% CI: 1.05–1.24)
  • 28% per 4 kg/m2 BMI (HR: 1.28; 95% CI: 1.21–1.37)
  • 42% if taking antihypertensive treatment (HR: 1.42; 95% CI: 1.18–1.71)
  • 48% with previous MI (HR: 1.48; 95% CI: 1.12–1.96)
The HFrEF-specific multivariable risk model included age, sex, SBP, BMI, smoking status, antihypertensive treatment, left ventricle hypertrophy, left bundle branch block, diabetes mellitus, and previous MI.
The relative risk of HFrEF increased by:
  • 66% per 10 years of age (HR: 1.66; 95% CI: 1.52–1.80)
  • 84% for men (HR: 1.84; 95% CI: 1.55–2.19)
  • 20% per 20 mm Hg SBP (HR: 1.20; 95% CI: 1.10–1.30)
  • 19% per 4 kg/m2 BMI (HR: 1.19; 95% CI: 1.11–1.28)
  • 41% in current smokers (HR: 1.41; 95% CI: 1.14–1.75)
  • 35% if taking antihypertensive treatment (HR: 1.35; 95% CI: 1.13–1.63)
  • 112% in presence of ECG LV hypertrophy (HR: 2.12; 95% CI: 1.55–2.90)
  • 217% in presence of left bundle branch block (HR: 3.17; 95% CI: 2.11–4.78)
  • 83% with diabetes mellitus (HR: 1.83; 95% CI: 1.48–2.26)
  • 160% with previous MI (HR: 2.60; 95% CI: 2.08–3.25)
Internal performance metrics and validation of HF subtype–specific risk models:
  • c-statistic for the HFpEF model in the derivation sample: 0.80; 95% CI: 0.78–0.82
  • c-statistic for the HFpEF model in the validation sample: 0.79; 95% CI: 0.77–0.82
  • c-statistic for the HFrEF model in the derivation sample: 0.82; 95% CI: 0.80–0.84
  • c-statistic for the HFrEF model in the validation sample: 0.80; 95% CI: 0.78–0.83
External validation of HF subtype–specific risk models using the MESA cohort:
  • c-statistic of HFpEF model: 0.76; 95% CI: 0.71–0.80
  • c-statistic of HFrEF model: 0.76; 95% CI: 0.71–0.80
Differential effects of predictors on HFpEF versus HFrEF:
  • men had a higher risk than women for HFrEF, but not for HFpEF (P for comparison <0.0001)
  • left bundle branch block and previous MI increased the risk more strongly for HFrEF than for HFpEF (P for comparison ≤0.0008 for both)
  • age seemed to have a greater risk associated with HFpEF than HFrEF
  • smoking status and LV hypertrophy were more strongly associated with HFrEF than HFpEF (P for comparison ≤0.02 for all)


Data from 4 cohorts were used to create and validate separate risk prediction models for HFpEF and HFrEF. Many risk factors were in common, however, it was possible to identify specific risk factors for each HF type. These findings may be useful to identify individuals at risk for either HFrEF or HFpEF, and support the selection of appropriate prevention and treatment strategies.

Find this article online at Circ Heart Fail


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