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 April 17, 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 April 17, 2014).

Share This



More Health & Medicine News

Thursday, April 17, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Could Even Casual Marijuana Use Alter Your Brain?

Could Even Casual Marijuana Use Alter Your Brain?

Newsy (Apr. 16, 2014) A new study conducted by researchers at Northwestern and Harvard suggests even casual marijuana use can alter your brain. Video provided by Newsy
Powered by NewsLook.com
Thousands Of Vials Of SARS Virus Go Missing

Thousands Of Vials Of SARS Virus Go Missing

Newsy (Apr. 16, 2014) A research institute in Paris somehow misplaced more than 2,000 vials of the deadly SARS virus. Video provided by Newsy
Powered by NewsLook.com
Formerly Conjoined Twins Released From Dallas Hospital

Formerly Conjoined Twins Released From Dallas Hospital

Newsy (Apr. 16, 2014) Conjoined twins Emmett and Owen Ezell were separated by doctors in August. Now, nearly nine months later, they're being released from the hospital. Video provided by Newsy
Powered by NewsLook.com
Ebola Outbreak Now Linked To 121 Deaths

Ebola Outbreak Now Linked To 121 Deaths

Newsy (Apr. 15, 2014) The ebola virus outbreak in West Africa is now linked to 121 deaths. Health officials fear the virus will continue to spread in urban areas. 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:
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