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Published on: July 25, 2019
N-terminal pro-B-type natriuretic peptide is associated with sudden cardiac death risk: the Cardiovascular Health
Kristen K Patton1, Nona Sotoodehnia, Christopher DeFilippi
1Division of Cardiology, University of Washington, Seattle, Washington 98115, USA.
Insights
Elevated N-terminal pro-B-type natriuretic peptide (NT-proBNP) levels are a significant predictor of sudden cardiac death (SCD) risk in older adults. This finding aids in identifying individuals who may benefit from targeted interventions.
Area of Science:
- Cardiology
- Biomarker Research
- Public Health
Background:
- Sudden cardiac death (SCD) causes 250,000-450,000 annual deaths, often without prior diagnosis.
- Elevated B-type natriuretic peptide levels are linked to heart failure, mortality, and sudden death in women.
Purpose of the Study:
- To investigate the association between N-terminal pro-B-type natriuretic peptide (NT-proBNP) and SCD risk.
- Analysis conducted within the Cardiovascular Health Study population.
Main Methods:
- Examined SCD risk in 5,447 participants based on baseline NT-proBNP levels.
- Utilized covariate-adjusted Cox regression models to estimate hazard ratios for SCD.
Main Results:
- Higher NT-proBNP levels strongly correlated with increased SCD risk.
- Unadjusted hazard ratio for the highest NT-proBNP quintile was 4.2 (95% CI [2.9, 6.1]).
- Association persisted after adjusting for clinical characteristics and risk factors (adjusted HR 2.5; 95% CI [1.6, 3.8]).
Conclusions:
- NT-proBNP is a valuable predictor of SCD risk in community-dwelling older adults, beyond traditional factors.
- This biomarker may help identify at-risk individuals for proactive management of underlying conditions.
Background:
Sudden cardiac death (SCD), the cause of 250,000-450,000 deaths per year, is a major public health problem. The majority of those affected do not have a prior cardiovascular diagnosis. Elevated B-type natriuretic peptide levels have been associated with the risk of heart failure and mortality as well as with sudden death in women.
Objective:
The purpose of this study was to examine the relationship between N-terminal pro-B-type natriuretic peptide (NT-proBNP) and SCD in the Cardiovascular Health Study population.
Methods:
The risk of SCD associated with baseline NT-proBNP was examined in 5,447 participants. Covariate-adjusted Cox model regressions were used to estimate the hazard ratios of developing SCD as a function of baseline NT-proBNP.
Results:
Over a median follow-up of 12.5 years (maximum 16), there were 289 cases of SCD. Higher NT-proBNP levels were strongly associated with SCD, with an unadjusted hazard ratio of 4.2 (95% confidence interval [2.9, 6.1]; P <.001) in the highest quintile compared with in the lowest. NT-proBNP remained associated with SCD even after adjustment for numerous clinical characteristics and risk factors (age, sex, race, and other associated conditions), with an adjusted hazard ratio for the fifth versus the first quintile of 2.5 (95% confidence interval [1.6, 3.8]; P <.001).
Conclusion:
NT-proBNP provides information regarding the risk of SCD in a community-based population of older adults, beyond other traditional risk factors. This biomarker may ultimately prove useful in targeting the population at risk with aggressive medical management of comorbid conditions.
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