Heart failure is a global pandemic and there has been a growing effort to enroll patients from different geographical regions in randomized controlled trials. In this review, we examined regional variation in both patient characteristics and outcomes among several of the most recent global heart failure trials RECENT FINDINGS: Retrospective analyses of global heart failure trials have identified marked variations in both baseline characteristics and management of heart failure by region of enrollment. In some trials, this variation has been significant enough to cause differential treatment effects. We summarized key heterogeneity observed in global heart failure clinical trials. Differences in both patient population and organization of these trials abroad pose an important challenge in making interpretations and country-level decisions. As such, we encourage a concerted effort to account for these differences in future research.
Introduction:
The 2014 hypertension (HTN) guidelines liberalized blood pressure (BP) goals for people ≥60 years.
Hypothesis:
Increased systolic and diastolic blood pressure (SBP/DBP) will be associated with a higher risk of mortality and heart failure hospitalization (HFH) across all age groups.
Methods:
We used age-adjusted Kaplan-Meier estimates to calculate the cumulative incidence of mortality and HFH across SBP/DBP categories (Figure) among 5280 participants of the Jackson Heart Study (JHS), an exclusively black population. We used Cox proportional hazards models to investigate associations between baseline visit SBP/DBP and both mortality and HFH. Linearity of associations and differential effects by age were assessed.
Results:
Median age was 56 years (IQR: 46-65); 63% were female; median SBP was 125 mmHg (IQR: 114-137); and median DBP was 79 mmHg (IQR: 72-86). There were 520 deaths over 9 years and 340 HFHs over 7 years. The age-adjusted cumulative incidence of both mortality and HFH increased with SBP, while rates of both outcomes were similar by DBP (Figure). After multivariable adjustment, every 10 mmHg increase in SBP was associated with increased mortality (HR 1.12 95% CI [1.06, 1.17]; p<.001) and HFH (HR 1.07 95% CI [1.00, 1.14]; p=0.05). The mortality risk per 10mmHg increase in SBP was greater in participants <60 years (HR 1.26 95% CI [1.13, 1.42]; p<.001) than ≥ 60 years (HR 1.09 95% CI [1.03, 1.15]; p=.004). DBP was inversely associated with risk of mortality (HR 0.85 95% CI [0.77, 0.94]; p= .002) and not associated with HFH (p=.20).
Conclusions:
In this JHS cohort, SBP was associated with both mortality and HFH, while DBP was inversely associated with mortality. Adults across all age groups were at increased risk of mortality as SBP increased. In the context of new HTN guidelines, these findings have important implications and should be considered when determining BP treatment goals in Black patients.
BackgroundIn 2014, new hypertension guidelines liberalized blood pressure goals for persons 60 years and older. Little is known about the implications for blacks.Methods and ResultsUsing data from 2000 through 2011 for 5280 participants in the Jackson Heart Study, a community‐based black cohort in Jackson, Mississippi, we examined whether higher blood pressure was associated with greater risk of mortality and heart failure hospitalization, and whether the risk was the same across age groups. We investigated associations between baseline blood pressure and both mortality and heart failure hospitalization. We also tested for interactions between age and blood pressure in the mortality model. Median systolic and diastolic blood pressures at baseline were 125 mm Hg (25th–75th percentile, 114–137 mm Hg) and 79 mm Hg (72–86 mm Hg), respectively. Median follow‐up was 9 years for mortality and 7 years for heart failure hospitalization. After multivariable adjustment, every 10 mm Hg increase in systolic blood pressure was associated with greater risks of mortality (hazard ratio, 1.12; 95% CI, 1.06–1.17) and heart failure hospitalization (1.07; 95% CI, 1.00–1.14). The mortality risk per 10 mm Hg increase in systolic blood pressure was greater in participants younger than 60 years (1.26; 95% CI, 1.13–1.42) than among participants 60 years and older (1.09; 95% CI, 1.03–1.15).ConclusionsAdults in all age groups were at greater risk of mortality as systolic blood pressure increased. In the context of the 2014 hypertension guidelines, these findings should be considered when determining treatment goals in black patients.
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