Featured Research

from universities, journals, and other organizations

New left-side heart pump improves right-side heart function, study suggests

Date:
May 28, 2010
Source:
Henry Ford Health System
Summary:
A state-of-the-art heart pump, designed to maintain a continuous flow of blood in end-stage cardiac patients with damage to the left side of the heart, also improves function on the right side of the heart, according to new research.

A state-of-the-art heart pump, designed to maintain a continuous flow of blood in end-stage cardiac patients with damage to the left side of the heart, also improves function on the right side of the heart, according to researchers at Henry Ford Hospital's Heart and Vascular Institute.

"Very little has been published regarding the ability of continuous flow pumps to have similar effects on the right ventricle," says study lead author Jeffrey Morgan, M.D., director of Cardiac Surgery Research at Henry Ford Hospital. "So we set out to evaluate its short-term and mid-term effects on central venous pressure and pulmonary artery pressures, on the severity of tricuspid regurgitation, as well as on the functioning of the right ventricle."

The study will be presented May 27 at the American Society for Artificial Internal Organs in Baltimore.

The pump, a left ventricular assist device (LVAD) known as the HeartMate II, was developed by Thoratec Corporation. LVADs are used to treat patients who are not candidates for heart transplant, and offer the advantage of being replaceable.

When implanted just below the heart and connected to a patient's diseased left ventricle -- the heart chamber that pumps blood into the body through the aorta -- it provides a constant, rather than a pulsing, flow. The only moving part in the HeartMate II is a tiny turbine with synthetic ruby bearings, lubricated by the blood itself. It's powered by a battery pack worn outside the body and connected by wires through the chest wall.

An earlier version of the device, which was larger and more complicated, was designed to mimic the heart's natural pulsing, but its size and the intricacies of its mechanism called for a simpler, smaller device that could also be used in more and physically smaller heart patients. Those implanted with the newer device have virtually no pulse because of the continuous blood flow.

Earlier studies showed that the pulsing, left-side version improved pressure in the pulmonary artery, which carries blood to the lungs from the right ventricle; improved function in the right ventricle; and reduced the severity of tricuspid regurgitation, a disorder that causes blood to leak back into the heart's atrium -- the upper chamber on the right side -- through the valve that's supposed to prevent such backward flow.

For the Henry Ford study, researchers monitored 41 patients, who were implanted with the HeartMate II to treat chronic heart failure, from March 2006 to July 2009. The mean age of the study group was just over 52 years.

At the end of the study, they found significant improvements in all of six measures included in the research, similar to published data for the earlier version of the HeartMate.

A companion study from Henry Ford also found that the HeartMate II, which is implanted in a much less invasive surgical procedure than its predecessor, also carried a far smaller risk of infections related to the device.

Funding: Division of Cardiothoracic Surgery, Henry Ford Hospital


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. "New left-side heart pump improves right-side heart function, study suggests." ScienceDaily. ScienceDaily, 28 May 2010. <www.sciencedaily.com/releases/2010/05/100527101043.htm>.
Henry Ford Health System. (2010, May 28). New left-side heart pump improves right-side heart function, study suggests. ScienceDaily. Retrieved July 24, 2014 from www.sciencedaily.com/releases/2010/05/100527101043.htm
Henry Ford Health System. "New left-side heart pump improves right-side heart function, study suggests." ScienceDaily. www.sciencedaily.com/releases/2010/05/100527101043.htm (accessed July 24, 2014).

Share This




More Health & Medicine News

Thursday, July 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

New Painkiller Designed To Discourage Abuse: Will It Work?

New Painkiller Designed To Discourage Abuse: Will It Work?

Newsy (July 24, 2014) The FDA approved Targiniq ER on Wednesday, a painkiller designed to keep users from abusing it. Like any new medication, however, it has doubters. Video provided by Newsy
Powered by NewsLook.com
Doctor At Forefront Of Fighting Ebola Outbreak Gets Ebola

Doctor At Forefront Of Fighting Ebola Outbreak Gets Ebola

Newsy (July 24, 2014) Sheik Umar Khan has treated many of the people infected in the Ebola outbreak, and now he's become one of them. Video provided by Newsy
Powered by NewsLook.com
Condemned Man's US Execution Takes Nearly Two Hours

Condemned Man's US Execution Takes Nearly Two Hours

AFP (July 24, 2014) America's death penalty debate raged Thursday after it took nearly two hours for Arizona to execute a prisoner who lost a Supreme Court battle challenging the experimental lethal drug cocktail. Duration: 00:55 Video provided by AFP
Powered by NewsLook.com
China's Ageing Millions Look Forward to Bleak Future

China's Ageing Millions Look Forward to Bleak Future

AFP (July 24, 2014) China's elderly population is expanding so quickly that children struggle to look after them, pushing them to do something unexpected in Chinese society- move their parents into a nursing home. Duration: 02:07 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