Featured Research

from universities, journals, and other organizations

Asymptomatic Peripheral Artery Disease Prevalence Is Rising

Date:
November 8, 2007
Source:
American Heart Association
Summary:
The prevalence of asymptomatic peripheral artery disease (PAD) is steadily increasing among American adults. PAD occurs when fatty deposits accumulate in the inner linings of artery walls, restricting blood flow and needed oxygen to the legs, feet, arms and other areas of the body. PAD increases the risk of dying from heart disease and stroke.

The prevalence of asymptomatic peripheral artery disease (PAD) is steadily increasing among American adults, researchers reported at the American Heart Association's Scientific Sessions 2007. PAD occurs when fatty deposits accumulate in the inner linings of artery walls, restricting blood flow and needed oxygen to the legs, feet, arms and other areas of the body. PAD increases the risk of dying from heart disease and stroke.

"We were interested in seeing if the prevalence of peripheral artery disease in the general U.S. population is increasing, specifically among people who don't have known coronary artery disease," said Andrew D. Sumner, M.D., lead author of the study and a cardiologist and medical director of the Heart Station and Cardiac Prevention at Lehigh Valley Hospital in Allentown, Pa.

Researchers hypothesized that the prevalence of asymptomatic PAD is increasing and the escalation is associated with a rise in the prevalence of other common cardiovascular risk factors, including diabetes, smoking, obesity and hypertension.

Sumner and colleagues analyzed data from three successive National Health and Nutrition Examination Surveys (NHANES), conducted in two-year increments between 1999 and 2004. They identified PAD prevalence by identifying people with an ankle-brachial index of less than 0.9.

"The ankle-brachial index measures the ratio of the blood pressure in the arms and legs, and if it is less than 0.9, people by definition have PAD," he said.

The researchers then examined the prevalence of associated cardiac risk factors of obesity, diabetes, hypertension and smoking in 5,376 participants, age 40 and older, with no prior history of cardiovascular disease. They found that PAD prevalence among asymptomatic adults 40 years and older significantly increased from 3.7 percent in the 1999-2000 survey to 4.2 percent in the 2001-02 survey and 4.6 percent in the 2003-04 survey.

"PAD prevalence was highest among those age 70 and older," Sumner said. "But there also was an increase in the prevalence in each adult age group, including 40 to 49, 50 to 69 and greater than 70 years." The authors said prevalence of obesity, diabetes, hypertension and smoking also increased over these three surveys.

"PAD is affecting more people in the United States and will continue to do so because the prevalence of this problem increases as we get older, and we have an aging population," Sumner said. "And this increase is associated with an increase in common cardiac risk factors."

Consumers should be aware that while they might not have symptoms, they could have PAD and should discuss risk factors and the possibility of screening with their doctors, Sumner said.

Doctors, on the other hand, should note that PAD prevalence is rising and that many of the accompanying risk factors, such as hypertension, can be treated.

"Doctors need to be looking for PAD in asymptomatic patients," he said. "And we need to more aggressively address the risk factors associated with this increase in prevalence."

The next step, from a public health perspective, is to reassess the protocols and systems that exist for evaluating PAD in asymptomatic people, he said.

Co-authors are Sherrine Eid, M.P.H.; Allison Parks, B.A.; Bree Edris, B.A.; and James F. Reed, III, Ph.D.


Story Source:

The above story is based on materials provided by American Heart Association. Note: Materials may be edited for content and length.


Cite This Page:

American Heart Association. "Asymptomatic Peripheral Artery Disease Prevalence Is Rising." ScienceDaily. ScienceDaily, 8 November 2007. <www.sciencedaily.com/releases/2007/11/071104191558.htm>.
American Heart Association. (2007, November 8). Asymptomatic Peripheral Artery Disease Prevalence Is Rising. ScienceDaily. Retrieved September 1, 2014 from www.sciencedaily.com/releases/2007/11/071104191558.htm
American Heart Association. "Asymptomatic Peripheral Artery Disease Prevalence Is Rising." ScienceDaily. www.sciencedaily.com/releases/2007/11/071104191558.htm (accessed September 1, 2014).

Share This




More Health & Medicine News

Monday, September 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Get on Your Bike! London Cycling Popularity Soars Despite Danger

Get on Your Bike! London Cycling Popularity Soars Despite Danger

AFP (Sep. 1, 2014) Wedged between buses, lorries and cars, cycling in London isn't for the faint hearted. Nevertheless the number of people choosing to bike in the British capital has doubled over the past 15 years. Duration: 02:27 Video provided by AFP
Powered by NewsLook.com
Can You Train Your Brain To Eat Healthy?

Can You Train Your Brain To Eat Healthy?

Newsy (Sep. 1, 2014) New research says if you condition yourself to eat healthy foods, eventually you'll crave them instead of junk food. Video provided by Newsy
Powered by NewsLook.com
We've Got Mites Living In Our Faces And So Do You

We've Got Mites Living In Our Faces And So Do You

Newsy (Aug. 30, 2014) A new study suggests 100 percent of adult humans (those over 18 years of age) have Demodex mites living in their faces. Video provided by Newsy
Powered by NewsLook.com
Liberia Continues Fight Against Ebola

Liberia Continues Fight Against Ebola

AFP (Aug. 30, 2014) Authorities in Liberia try to stem the spread of the Ebola epidemic by raising awareness and setting up sanitation units for people to wash their hands. Duration: 00:41 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins