Latest News: Technology |  Celebrity |  Movies |  Apple |  Cars |  Business |  Sports |  TV Shows |  Geek

Trending

Filed under: News | Technology News

 

25 Year-Blood Pressure Trajectory Predicts Heart Risk

1 Updates
25 Year-Blood Pressure Trajectory  Predicts Heart Risk
 
 

YouTube Videos Comments

Full Story

25 Year-Blood Pressure Trajectory Predicts Heart Risk

Everyone knows that blood pressure is one of the most important measurements of cardiovascular risk. Less well known is that most studies of blood pressure have relied on single or isolated measurements of blood pressure. Few studies have even attempted to examine the significance of blood pressure patterns over a long period of time.

Now, in a paper published in  JAMA, researchers present an analysis of data from 3442 adults who participated in the long-term CARDIA study. Study participants were 18-30 years of age at baseline and had multiple blood pressure measurements over the course of the study. After 25 years, they had a CT scan that measured their coronary artery calcium (CAC) score. A CAC score of 100 or greater was considered to be evidence of subclinical atherosclerosis.  (Although many doubts have been expressed about the role of the CAC score in contemporary medicine, its use as a marker for subclinical atherosclerosis in a study of this sort is probably not controversial. Because of the young age of the participants at the start of the study, the investigators were unable to study differences in actual cardiovascular events.)

The researchers identified five distinct patterns of blood pressure over time:

  • 21.8% of the patients had low blood pressure throughout the study (low-stable). 4% of people in this group had evidence of atherosclerosis on their calcium scan after 25 years.
  • 42.3% had moderate blood pressure levels throughout the study (moderate-stable). 7.9% of people in this group had atherosclerosis.
  • 12.2% had moderate blood pressure at the start and then had a rapid increase in blood pressure (moderate-increasing). 10.1% of people in this group had atherosclerosis.
  • 19.0% had relatively elevated blood pressure levels throughout the study (elevated-stable). 17.4% of people in this group had atherosclerosis.
  • 4.8% had high blood pressure throughout the study (elevated- increasing). 25.4% of people in this group  had atherosclerosis.

After adjustment for other differences in risk factors between the groups, people in the elevated-increasing group were 3- to 4-times more likely to have atherosclerosis than those in the low-stable group.  The investigators note that most of the participants with elevated blood pressures during the study did not meet the definition for actual hypertension but fell within the range of prehypertension (generally defined as a blood pressure between 120/80 mm Hg and 139/89 mm Hg).  African-Americans and smokers were more likely to have a rapid increase in blood pressure in middle age.

The authors conclude that their “findings suggest that an individual’s long-term patterns of change in BP starting in early adulthood may provide additional information about his or her risk of development of coronary calcium. In particular, prehypertension at a young age followed by long-term exposure to BP levels in the prehypertension range or higher was strongly associated with a CAC score of 100 HU or greater.”

Source: Forbes

 

iPad Air Giveaway. Win a free iPad Air.

You Might Also Like

Updates


Sponsored Update


Advertisement


More From the Web

Shopping Deals

 
 
 

<a href="/latest_stories/all/all/31" rel="author">Forbes</a>
Forbes is among the most trusted resources for the world's business and investment leaders, providing them the uncompromising commentary, concise analysis, relevant tools and real-time reporting they need to succeed at work, profit from investing and have fun with the rewards of winning.

 

 

Comments

blog comments powered by Disqus

Latest stories

Nick Cannon Admits He and Wife Mariah Carey are Separated
 
 
JaMarcus Russell Does Dish Network Commercial
JaMarcus Russell Does Dish Network Commercial
Former NFL first overall pick JaMarcus Russell did a commercial for Dish Network along with Matt Leinart, Brian Bosworth and Heath Shuler which was released on Aug. 19.
 
 
Tim Howard Goes on 1-Year Break From USMNT
Tim Howard Goes on 1-Year Break From USMNT
United States goalie Tim Howard announced on Aug. 21 he will take a one-year break from international competition.
 
 
The Crew Preorder 20% Off In Time For Monday&#039;s Beta
The Crew Preorder 20% Off In Time For Monday's Beta
You'll have to preorder The Crew on PC to get access to Monday's new Beta, fortunately there's a 20% off discount if you know where to look.
 
 
 

About the Geek Mind

The “geek mind” is concerned with more than just the latest iPhone rumors, or which company will win the gaming console wars. I4U is concerned with more than just the latest photo shoot or other celebrity gossip.

The “geek mind” is concerned with life, in all its different forms and facets. The geek mind wants to know about societal and financial issues, both abroad and at home. If a Fortune 500 decides to raise their minimum wage, or any high priority news, the geek mind wants to know. The geek mind wants to know the top teams in the National Football League, or who’s likely to win the NBA Finals this coming year. The geek mind wants to know who the hottest new models are, or whether the newest blockbuster movie is worth seeing. The geek mind wants to know. The geek mind wants—needs—knowledge.

Read more about The Geek Mind.