Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Assessing the real risk of heart disease in young people with low short-term risks

28.01.2009
Risk stratification has become central to strategies for the prevention of coronary heart disease, with the implication that priority is given to those at highest risk (ie, those with established heart disease).

However, such stratification using the conventional risk estimation models may not be accurately achieved in individuals without symptoms, especially those in younger age groups whose 10-year “short-term” estimated risk seems low.

For example, while the Framingham Risk Score is acknowledged as “a great advance” in the estimation of risk (and thus in the primary prevention of CHD), most younger individuals and virtually all women are defined as low risk, despite apparent and significant differences in their actual risk factor burden.

Now, a new study reported online by Circulation suggests that many younger individuals defined as low risk by conventional risk stratification methods may not remain at low risk throughout their lives.(1)

The study included 2988 individuals under 50 years of age from the Coronary Artery Risk Development in Young Adults (CARDIA) study and 1076 from the Multi-Ethnic Study of Atherosclerosis (MESA). Short-term (10-year) risk was assessed according to the Framingham Risk Score, but added to this risk assessment model were other factors indicative of a longer lifetime risk.(2) Combination of the two risk assessment models allowed risk stratification in three groups: low 10-year/low lifetime risk; low 10-year/high lifetime risk; and high 10-year risk or diagnosed diabetes mellitus. Baseline levels and change in levels of subclinical atherosclerosis (as represented by coronary artery calcium or carotid intima-media thickness) were then compared across the three risk groups. And results showed that those in the low 10-year/high lifetime risk group had a greater subclinical disease burden and greater incidence of atherosclerotic progression than those in the low 10-year/low lifetime risk group, even at younger ages.

“Thus, long-term risk estimates in younger patients may provide new information regarding risk prediction that is not usually available using only a 10-year risk model,” said the study’s first author Dr Jarrett Berry from UT Southwestern Medical Center, Dallas.

The main weakness of a conventional risk estimation model such as the Framingham Risk Score is the dominance of age, says cardiologist Professor Wolfgang König from the University of Ulm Medical Centre in Germany speaking on behalf of the European Society of Cardiology. “It means that 90 per cent of people of a relatively younger age are defined as low risk. But experience tells us that a low short-term risk in younger subjects may not reflect their true risk. We see many young patients with an apparently low short-term risk who actually have advanced heart disease. That’s why young patients are still a challenge in cardiology.”

Professor König adds that the study raises an attractive concept in risk stratification which may well provide a mechanistic explanation for the discrepancy between “low risk” but advanced disease in young people. In public health terms, such an approach may well allow more precise differentiation between various risk groups. “The earlier we can identify risk, the higher the chance of preventing serious disease,” he says.

1. Berry JD, Liu K, Folsom AR, et al. Multi-Ethnic Study of AtherosclerosisDisease. Prevalence and progression of subclinical atherosclerosis in younger adults with low short-term but high lifetime estimated risk for cardiovascular disease. The Coronary Artery Risk Development in Young Adults Study and Multi-Ethnic Study of Atherosclerosis. Circulation 2009; e-pub ahead of print, DOI: 10.1161/CIRCULATIONAHA.108.800235

2. Lifetime risk was estimated according to five mutually exclusive risk factors – blood pressure, total cholesterol, diabetes, smoking and predicted risk.

ESC Press Office | alfa
Further information:
http://www.escardio.org

More articles from Health and Medicine:

nachricht Satellites, airport visibility readings shed light on troops' exposure to air pollution
09.12.2016 | Veterans Affairs Research Communications

nachricht Oxygen can wake up dormant bacteria for antibiotic attacks
08.12.2016 | Penn State

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Electron highway inside crystal

Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.

Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

Researchers identify potentially druggable mutant p53 proteins that promote cancer growth

09.12.2016 | Life Sciences

Scientists produce a new roadmap for guiding development & conservation in the Amazon

09.12.2016 | Ecology, The Environment and Conservation

Satellites, airport visibility readings shed light on troops' exposure to air pollution

09.12.2016 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>