Featured Research

from universities, journals, and other organizations

MRI Scans Following Heart Attack Could Determine Future Health

Date:
March 2, 1998
Source:
Johns Hopkins Medical Institutions
Summary:
Magnetic resonance imaging (MRI) of the heart after a heart attack may help determine which patients do well and which ones will later suffer complications such as recurrent heart attack, congestive heart failure, stroke or death, according to a study led by Johns Hopkins researchers.

Magnetic resonance imaging (MRI) of the heart after a heart attack may help determine which patients do well and which ones will later suffer complications such as recurrent heart attack, congestive heart failure, stroke or death, according to a study led by Johns Hopkins researchers.

"This technology could be a cost-effective means to identify which patients need to be monitored in order to prevent or minimize future cardiac events," says João A.C. Lima, M.D., senior author of the study and an associate professor of medicine at Hopkins.

Patients whose MRI scans showed their hearts' capillaries were partially blocked with dying blood cells and debris following a heart attack were more likely to suffer frequent heart complications within the next two years. Capillaries are the body's narrowest blood vessels and are more easily clogged by such debris than larger vessels -- arteries and veins.

In addition, researchers noted that the more serious the heart attack, the higher the patient's risk of later problems.

"Vascular obstruction shown on the MRI scans accurately predicted long-term outcome in patients who had heart attacks," Lima says. "MRI also helped determine the size of the heart attack and the subsequent risk of developing complications."

Results of the study were published in the March 3 issue of Circulation: Journal of the American Heart Association.

Researchers did MRI scans of 44 patients' hearts an average of 10 days after heart attack. Seventeen of the patients returned six months later for a repeat MRI scan.

Of the 11 patients who had vascular obstruction, five (45 percent) experienced at least one significant post-heart attack complication, such as a second heart attack, congestive heart failure, a stroke or death. In contrast, only three (9 percent) of the 33 without obstruction suffered later complications. Problems occurred an average of 14 months after heart attack.

In addition, researchers noted that the risk of having post-heart attack complications increased with the magnitude of the heart attack. Thirty percent of the patients with small heart attacks suffered later complications, compared to 43 percent of those with medium-sized heart attacks and 71 percent of those with large heart attacks.

Blood vessel blockage also increased the risk of patients' developing heart wall damage. Of the 17 patients who returned for a second MRI scan, five of eight patients who had blocked vessels had a thinner heart wall and scar tissue. In comparison, none of the nine patients without blockage developed scar tissue.

"This is one of the first in an increasing number of clinical studies that show us how MRI is likely to become the dominant method for imaging the heart in the near future," says Elias A. Zerhouni, M.D., a co-author of the paper. Zerhouni, professor and director of radiology at Hopkins, is a developer of the MRI techniques used in this study.

The study was supported by the American Heart Association and the National Heart, Lung and Blood Institute.

The study's other authors were Katherine C. Wu, M.D.; Carlos H. Lugo-Olivieri, M.D.; Lili A. Barouch, M.D.; Steven P. Schulman, M.D.; and Roger S. Blumenthal, M.D., of Hopkins; and Robert M. Judd, Ph.D., of Northwestern University Medical School.


Story Source:

The above story is based on materials provided by Johns Hopkins Medical Institutions. Note: Materials may be edited for content and length.


Cite This Page:

Johns Hopkins Medical Institutions. "MRI Scans Following Heart Attack Could Determine Future Health." ScienceDaily. ScienceDaily, 2 March 1998. <www.sciencedaily.com/releases/1998/03/980302163120.htm>.
Johns Hopkins Medical Institutions. (1998, March 2). MRI Scans Following Heart Attack Could Determine Future Health. ScienceDaily. Retrieved July 22, 2014 from www.sciencedaily.com/releases/1998/03/980302163120.htm
Johns Hopkins Medical Institutions. "MRI Scans Following Heart Attack Could Determine Future Health." ScienceDaily. www.sciencedaily.com/releases/1998/03/980302163120.htm (accessed July 22, 2014).

Share This




More Health & Medicine News

Tuesday, July 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Courts Conflicted Over Healthcare Law

Courts Conflicted Over Healthcare Law

AP (July 22, 2014) — Two federal appeals courts issued conflicting rulings Tuesday on the legality of the federally-run healthcare exchange that operates in 36 states. (July 22) Video provided by AP
Powered by NewsLook.com
Why Do People Believe We Only Use 10 Percent Of Our Brains?

Why Do People Believe We Only Use 10 Percent Of Our Brains?

Newsy (July 22, 2014) — The new sci-fi thriller "Lucy" is making people question whether we really use all our brainpower. But, as scientists have insisted for years, we do. Video provided by Newsy
Powered by NewsLook.com
Scientists Find New Way To Make Human Platelets

Scientists Find New Way To Make Human Platelets

Newsy (July 22, 2014) — Boston scientists have discovered a new way to create fully functioning human platelets using a bioreactor and human stem cells. Video provided by Newsy
Powered by NewsLook.com
Gilead's $1000-a-Pill Drug Could Cure Hep C in HIV-Positive People

Gilead's $1000-a-Pill Drug Could Cure Hep C in HIV-Positive People

TheStreet (July 21, 2014) — New research shows Gilead Science's drug Sovaldi helps in curing hepatitis C in those who suffer from HIV. In a medical study, the combination of Gilead's Hep C drug with anti-viral drug Ribavirin cured 76% of HIV-positive patients suffering from the most common hepatitis C strain. Hepatitis C and related complications have been a top cause of death in HIV-positive patients. Typical medication used to treat the disease, including interferon proteins, tended to react badly with HIV drugs. However, Sovaldi's %1,000-a-pill price tag could limit the number of patients able to access the treatment. TheStreet's Keris Lahiff reports from New York. Video provided by TheStreet
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