Featured Research

from universities, journals, and other organizations

EKG can show false positive readings for diagnosing heart condition

Date:
November 17, 2009
Source:
Henry Ford Health System
Summary:
The electrical measurements on the electrocardiogram can often mislead physicians in diagnosing the heart condition left ventricular hypertrophy, causing other screening tests to be ordered before a definitive conclusion can be made, according to a new study.

The electrical measurements on the electrocardiogram can often mislead physicians in diagnosing the heart condition left ventricular hypertrophy, causing other screening tests to be ordered before a definitive conclusion can be made, according to a Henry Ford Hospital study.

The study of 500 patients found a false positive reading between 77 and 82 percent in patients screened by electrocardiogram, and a false negative reading between 6 percent to 7 percent in the same patient population.

The electrocardiogram also showed a high negative predictive reading, which reflects the absence of left ventricular hypertrophy. Physicians rely on several electrocardiogram measurements for diagnosing the heart condition.

Researchers evaluated the electrocardiogram data against coronary CT scans taken of patients. CT scans are considered highly accurate for diagnosing left ventricular hypertrophy, or LVH.

An electrocardiogram, or EKG, measures electrical activity of a heartbeat; a CT scan uses X-rays to take clear, detailed images of the heart.

The study is being presented at the American Heart Association's annual scientific conference Nov. 14-18 in Orlando.

"The EKG criteria for diagnosing left ventricular hypertrophy have a very poor sensitivity," says Mohamad Sinno, M.D., cardiology fellow at Henry Ford Hospital and lead author of the study. "So when the EKG shows left ventricular hypertrophy, it doesn't allow the physician to make an accurate assessment, and further screening tools such as cardiac CT, MRI scan, or an echocardiogram are warranted."

LVH, a condition in which the lower-left chamber of the heart grows abnormally thick, affects more than 16 percent of the adult population in the United States. It is caused by an underlying medical condition, most commonly high blood pressure, but often does not show symptoms until later in the disease process.

If left untreated, LVH has been shown to be an independent predictor for future adverse cardiovascular disease such as heart attacks, strokes, heart failure, arrythmias and death.


Story Source:

The above story is based on materials provided by Henry Ford Health System. Note: Materials may be edited for content and length.


Cite This Page:

Henry Ford Health System. "EKG can show false positive readings for diagnosing heart condition." ScienceDaily. ScienceDaily, 17 November 2009. <www.sciencedaily.com/releases/2009/11/091116103435.htm>.
Henry Ford Health System. (2009, November 17). EKG can show false positive readings for diagnosing heart condition. ScienceDaily. Retrieved September 23, 2014 from www.sciencedaily.com/releases/2009/11/091116103435.htm
Henry Ford Health System. "EKG can show false positive readings for diagnosing heart condition." ScienceDaily. www.sciencedaily.com/releases/2009/11/091116103435.htm (accessed September 23, 2014).

Share This



More Health & Medicine News

Tuesday, September 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola Costs Keep Mounting

Ebola Costs Keep Mounting

Reuters - Business Video Online (Sep. 23, 2014) The WHO has warned up to 20,000 people could be infected with Ebola over the next few weeks. As Sonia Legg reports, the implications for the West African countries suffering from the disease are huge. Video provided by Reuters
Powered by NewsLook.com
Liberia Pleads for Help to Fight Ebola

Liberia Pleads for Help to Fight Ebola

AP (Sep. 22, 2014) Liberia's finance minister is urging the international community to quickly follow through on pledges of cash to battle Ebola. Bodies are piling up in the capital Monrovia as the nation awaits more help. (Sept. 22) Video provided by AP
Powered by NewsLook.com
Ebola Doctor Says Border Controls Critical

Ebola Doctor Says Border Controls Critical

AP (Sep. 22, 2014) A Florida doctor who helped fight the expanding Ebola outbreak in West Africa says the disease can be stopped, but only if nations quickly step up their response and make border control a priority. (Sept. 22) Video provided by AP
Powered by NewsLook.com
Global Ebola Aid Increasing But Critics Say It's Late

Global Ebola Aid Increasing But Critics Say It's Late

Newsy (Sep. 21, 2014) More than 100 tons of medical supplies were sent to West Africa on Saturday, but aid workers say the global response is still sluggish. Video provided by Newsy
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:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

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