scholarly journals Impact of risk factors for major cardiovascular diseases: a comparison of life-time observational and Mendelian randomisation findings

Open Heart ◽  
2021 ◽  
Vol 8 (2) ◽  
pp. e001735
Author(s):  
Lars Lind ◽  
Martin Ingelsson ◽  
Johan Sundstrom ◽  
Johan Ärnlöv

BackgroundThis study compared the strength and causality of associations between major risk factors for cardiovascular disease (CVD) and the four major CVDs: myocardial infarction, ischaemic stroke, heart failure and atrial fibrillation. Both a long-term follow-up in an observational cohort and Mendelian randomisation (MR) were used for this aim.MethodsIn the Uppsala Longitudinal Study of Adult Men study, 2322 men, all aged 50 years, were assessed for CVD risk factors and then followed for four decades regarding incident CVDs. The two-sample MR part used public available Genome-Wide Association Study (GWAS) data.ResultsIn multivariate analyses, systolic blood pressure was overall by far the most important risk factor, since it was related to all four CVDs, both in observational and MR analyses. Body mass index was the second most overall important risk factor, being linked to all four CVDs, except ischaemic stroke, both in observational and MR analyses. Smoking was an important risk factor for ischaemic stroke and heart failure, both in observational and MR analyses, while low-density lipoprotein-cholesterol mainly was related to myocardial infarction. Diabetes was mainly a causal risk factor for incident myocardial infarction and heart failure. Neither HDL-cholesterol nor triglycerides were of major importance as risk factors in these multivariable models.ConclusionBy combining long-term observational data with genetic data, we show that the impact and causal role of specific established cardiovascular risk factors varies between different major CVDs. Systolic blood pressure was causally related to all four cardiovascular outcomes and was therefore, overall, the most important risk factor.

Author(s):  
Orna Reges ◽  
Hongyan Ning ◽  
John T. Wilkins ◽  
Colin O. Wu ◽  
Xin Tian ◽  
...  

Hypertension is a major risk factor for cardiovascular disease (CVD), but previous studies have mostly been limited to a single exam, a single cohort, a short follow-up period, or a limited number of outcomes. This study aimed to assess the association of 10-year cumulative systolic blood pressure (BP) in middle age with long-term risk of any CVD, coronary heart disease, stroke, heart failure, all-cause mortality, and healthy longevity. Individuals (11 502) from 5 racially/ethnically diverse US community-based cohorts were included in this study once they met all the inclusion criteria: ≥10 year of observation in the included cohort, aged 45 to 60 years, free of CVD, and had ≥3 visits with BP exams over the preceding 10 years. For each participant, systolic BP level was predicted for each year of the 10-year prior inclusion, based on the available exams (median of 4.0; spread over, 9.1 [range, 7.2–10] years). Lower 10-year cumulative systolic BP was associated with 4.1 years longer survival and 5.4 years later onset of CVD, resulting in living longer life with a shorter period with morbidity. Models adjusted for sociodemographic characteristics, cardiovascular risk factors, and index systolic BP demonstrated associations of 10-year cumulative systolic BP (per 130 mm Hg×year change, the threshold for stage-1 hypertension) with CVD (hazard ratio [HR], 1.28 [95% CI, 1.20–1.36]), coronary heart disease (HR, 1.29 [95% CI, 1.19–1.40]), stroke (HR, 1.33 [95% CI, 1.20–1.47]), heart failure (HR, 1.12 [95% CI, 1.02–1.23]), and all-cause mortality (HR, 1.21 [95% CI, 1.14–1.29]). These findings emphasize the importance of 10-year cumulative systolic BP as a risk factor to CVD, above and beyond current systolic BP.


2021 ◽  
Vol 28 (Supplement_1) ◽  
Author(s):  
H Bergum ◽  
I Sandven ◽  
TO Klemsdal

Abstract Funding Acknowledgements Type of funding sources: Public grant(s) – National budget only. Main funding source(s): The Norwegian health department Background The evidence of the long-term effects of multiple lifestyle intervention on cardiovascular risk is uncertain. We aimed to summarize the evidence from randomized clinical trials examining the efficacy of lifestyle intervention on major cardiovascular risk factors in subjects at high cardiovascular risk. Methods  Eligible trials investigated the impact of lifestyle intervention versus usual care with minimum 24 months follow-up, reporting more than one major cardiovascular risk factor. A literature search updated April 15, 2020 identified 12 eligible studies. The results from individual trials were combined using fixed and random effect models, using the standardized mean difference (SMD) to estimate effect sizes. Small-study effect was evaluated, and heterogeneity between studies examined by subgroup and meta-regression analyses considering patient- and study-level variables. Results  Small-study effect was not identified. Lifestyle intervention reduced systolic blood pressure modestly with an estimated SMD of -0.13, 95% confidence interval (CI): -0.21 to -0.04, with moderate heterogeneity (I² = 59%), corresponding to a mean difference of approximately 2 mmHg (MD = -1.86, 95% CI: -3.14 to -0.57, p = 0.0046). This effect disappeared in the subgroup of trials judged at low risk of bias (SMD = 0.02, 95% CI: -0.08 to 0.11). For the outcome total cholesterol SMD was -0.06, 95% CI: -0.13 to 0.00, with no heterogeneity (I² = 0%), indicating no effect of the intervention. Conclusion  Lifestyle intervention resulted in only a modest effect on systolic blood pressure and no effect on total cholesterol after 24 months. Further lifestyle trials should consider the challenge of maintaining larger long-term benefits to ensure impact on cardiovascular outcomes.


2021 ◽  
Author(s):  
Xinghe Huang ◽  
Jiamin Liu ◽  
Shuang Hu ◽  
Lihua Zhang ◽  
Fengyu Miao ◽  
...  

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
H Wienbergen ◽  
A Fach ◽  
S Meyer ◽  
J Schmucker ◽  
R Osteresch ◽  
...  

Abstract Background The effects of an intensive prevention program (IPP) for 12 months following 3-week rehabilitation after myocardial infarction (MI) have been proven by the randomized IPP trial. The present study investigates if the effects of IPP persist one year after termination of the program and if a reintervention after >24 months (“prevention boost”) is effective. Methods In the IPP trial patients were recruited during hospitalization for acute MI and randomly assigned to IPP versus usual care (UC) one month after discharge (after 3-week rehabilitation). IPP was coordinated by non-physician prevention assistants and included intensive group education sessions, telephone calls, telemetric and clinical control of risk factors. Primary study endpoint was the IPP Prevention Score, a sum score evaluating six major risk factors. The score ranges from 0 to 15 points, with a score of 15 points indicating best risk factor control. In the present study the effects of IPP were investigated after 24 months – one year after termination of the program. Thereafter, patients of the IPP study arm with at least one insufficiently controlled risk factor were randomly assigned to a 2-months reintervention (“prevention boost”) vs. no reintervention. Results At long-term follow-up after 24 months, 129 patients of the IPP study arm were compared to 136 patients of the UC study arm. IPP was associated with a significantly better risk factor control compared to UC at 24 months (IPP Prevention Score 10.9±2.3 points in the IPP group vs. 9.4±2.3 points in the UC group, p<0.01). However, in the IPP group a decrease of risk factor control was observed at the 24-months visit compared to the 12-months visit at the end of the prevention program (IPP Prevention Score 10.9±2.3 points at 24 months vs. 11.6±2.2 points at 12 months, p<0.05, Figure 1). A 2-months reintervention (“prevention boost”) was effective to improve risk factor control during long-term course: IPP Prevention Score increased from 10.5±2.1 points to 10.7±1.9 points in the reintervention group, while it decreased from 10.5±2.1 points to 9.7±2.1 points in the group without reintervention (p<0.05 between the groups, Figure 1). Conclusions IPP was associated with a better risk factor control compared to UC during 24 months; however, a deterioration of risk factors after termination of IPP suggests that even a 12-months prevention program is not long enough. The effects of a short reintervention after >24 months (“prevention boost”) indicate the need for prevention concepts that are based on repetitive personal contacts during long-term course after coronary events. Figure 1 Funding Acknowledgement Type of funding source: Foundation. Main funding source(s): Stiftung Bremer Herzen (Bremen Heart Foundation)


BMJ ◽  
2018 ◽  
pp. k4247 ◽  
Author(s):  
Elizabeth R C Millett ◽  
Sanne A E Peters ◽  
Mark Woodward

AbstractObjectivesTo investigate sex differences in risk factors for incident myocardial infarction (MI) and whether they vary with age.DesignProspective population based study.SettingUK Biobank.Participants471 998 participants (56% women; mean age 56.2) with no history of cardiovascular disease.Main outcome measureIncident (fatal and non-fatal) MI.Results5081 participants (1463 (28.8%) of whom were women) had MI over seven years’ mean follow-up, resulting in an incidence per 10 000 person years of 7.76 (95% confidence interval 7.37 to 8.16) for women and 24.35 (23.57 to 25.16) for men. Higher blood pressure indices, smoking intensity, body mass index, and the presence of diabetes were associated with an increased risk of MI in men and women, but associations were attenuated with age. In women, systolic blood pressure and hypertension, smoking status and intensity, and diabetes were associated with higher hazard ratios for MI compared with men: ratio of hazard ratios 1.09 (95% confidence interval 1.02 to 1.16) for systolic blood pressure, 1.55 (1.32 to 1.83) for current smoking, 2.91 (1.56 to 5.45) for type 1 diabetes, and 1.47 (1.16 to 1.87) for type 2 diabetes. There was no evidence that any of these ratios of hazard ratios decreased with age (P>0.2). With the exception of type 1 diabetes, the incidence of MI was higher in men than in women for all risk factors.ConclusionsAlthough the incidence of MI was higher in men than in women, several risk factors were more strongly associated with MI in women compared with men. Sex specific associations between risk factors and MI declined with age, but, where it occurred, the higher relative risk in women remained. As the population ages and the prevalence of lifestyle associated risk factors increase, the incidence of MI in women will likely become more similar to that in men.


Circulation ◽  
2018 ◽  
Vol 137 (suppl_1) ◽  
Author(s):  
Michelle C Odden ◽  
Andreea Rawlings ◽  
Alice Arnold ◽  
Mary Cushman ◽  
Mary Lou Biggs ◽  
...  

Introduction: Cardiovascular disease is the leading cause of mortality in old age, yet there is limited research on the patterns of cardiovascular risk factors that predict survival to 90 years. Hypothesis: The patterns of cardiovascular risk factors that portend longevity will differ from those that confer low cardiovascular risk. Methods: We examined repeated measures of blood pressure, LDL-cholesterol, and BMI from age 67 and survival to 90 years in the Cardiovascular Health Study (CHS). CHS is a prospective study of 5,888 black and white adults in two waves (1989-90 and 1992-93) from Medicare eligibility lists in four counties in the U.S. We restricted to participants aged 67 to 75 years at baseline to control for birth cohort effects and examined repeated measures of cardiovascular risk factors throughout the late-life course. We fit logistic regression models to predict survival to age 90 using generalized estimating equations, and modeled the risk factors as linear, a linear spline, and clinically relevant categories. Models were adjusted for demographics and medication use, and we also examined whether the association of each risk factor with longevity varied by the age of risk factor measurement. Best fit models are presented. Results: Among 3,645 participants in the birth cohort, 1,160 (31.8%) survived to 90 by June 16 th , 2015. Higher systolic blood pressure in early old age was associated with reduced odds for longevity, but there was an interaction with age such that the association crossed the null at 80 years. (Table) Among those with LDL-cholesterol <130 mg/dL, higher LDL-cholesterol was associated with greater longevity; at levels above 130 mg/dL there was no association between LDL-cholesterol and longevity. BMI had a u-shaped association with longevity. Conclusions: In summary, the patterns of risk factors that predict longevity differ from that considered to predict low cardiovascular risk. The risk of high systolic blood pressure appears to depend on the age of blood pressure measurement.


2020 ◽  
Vol 41 (28) ◽  
pp. 2660-2667 ◽  
Author(s):  
Osama Moussa ◽  
Maddalena Ardissino ◽  
Tobias Heaton ◽  
Alice Tang ◽  
Omar Khan ◽  
...  

Abstract Aims  This study aims to evaluate the long-term effect of bariatric surgery on cardiovascular outcomes of patients with obesity. Methods and results  A nested cohort study was carried out within the Clinical Practice Research Datalink. The study cohort included the 3701 patients on the database who had undergone bariatric surgery and 3701 age, gender, and body mass index-matched controls. The primary endpoint was the composite of fatal or non-fatal myocardial infarction and fatal or non-fatal ischaemic stroke. Secondary endpoints included fatal or non-fatal myocardial infarction alone, fatal or non-fatal ischaemic stroke alone, incident heart failure, and mortality. The median follow-up achieved was 11.2 years. Patients who had undergone bariatric surgery had a significantly lower occurrence of major adverse cardiovascular events [hazard ratio (HR) 0.410, 95% confidence interval (CI) 0.274–0.615; P &lt; 0.001]. This was mainly driven by a reduction in myocardial infarction (HR 0.412, 95% CI 0.280–0.606; P &lt; 0.001) and not in acute ischaemic stroke (HR 0.536, 95% CI 0.164–1.748; P = 0.301). A reduction was also observed in new diagnoses of heart failure (HR 0.403, 95% CI 0.181–0.897; P = 0.026) and mortality (HR 0.254, 95% CI 0.183–0.353; P &lt; 0.001). Conclusion  The results of this large, nationwide cohort study support the association of bariatric surgery with lower long-term risk of major cardiovascular events and incident heart failure in patients with obesity.


Hypertension ◽  
2021 ◽  
Vol 78 (5) ◽  
pp. 1241-1247
Author(s):  
Piotr Sobieraj ◽  
Peter M. Nilsson ◽  
Thomas Kahan

SPRINT (Systolic Blood Pressure Intervention Trial) showed that intensive lowering of systolic blood pressure to <120 mm Hg was beneficial, as compared with standard treatment in which systolic blood pressure is lowered to <140 mm Hg. The proposal that the results of SPRINT were mainly driven by the reduction of heart failure events has undermined the main conclusion of the study. Therefore, this study aimed to assess whether the intensive treatment group was also associated with a reduced risk of cardiovascular events when heart failure events were excluded from the primary composite end point. The SPRINT data were analyzed with a redefined composite end point including myocardial infarction, acute coronary syndrome other than myocardial infarction, stroke, and cardiovascular death (excluding heart failure events). The results show that intensive treatment (<120 mm Hg) is associated with a reduced risk for the redefined composite end point (hazard ratio, 0.79 [95% CI, 0.66–0.95]; P =0.012), as compared with the standard treatment (<140 mm Hg), and with results similar to the original SPRINT findings (hazard ratio, 0.75 [95% CI, 0.64–0.89]; P <0.001). Overall, the main results of SPRINT are not driven by a reduction in heart failure events. Moreover, this post hoc analysis supports the use of a more intensive treatment strategy for high-risk hypertensive patients. Graphic Abstract: An online graphic abstract is available for this article.


Sign in / Sign up

Export Citation Format

Share Document