Featured Research

from universities, journals, and other organizations

Clinical Trial Of Nonsurgical Intervention For Aortic Valve Stenosis

Date:
June 20, 2008
Source:
Cedars-Sinai Medical Center
Summary:
On Nov. 26, 2007, doctors at the Cedars-Sinai Heart Institute performed the first "transcatheter" minimally invasive replacement of an aortic heart valve in the western United States, using the Edwards SAPIEN transcatheter aortic heart valve developed by Edwards Lifesciences Corp.

On Nov. 26, 2007, doctors at the Cedars-Sinai Heart Institute performed the first "transcatheter" minimally invasive replacement of an aortic heart valve in the western United States, using the Edwards SAPIEN transcatheter aortic heart valve developed by Edwards Lifesciences Corp. Cedars-Sinai is one of 16 centers participating in a pivotal clinical trial (the PARTNER trial) of the device, and is the only site currently recruiting on the West Coast.

The aortic valve controls blood flow from the heart's main pumping chamber into the body's largest arterial trunk. Stenosis (narrowing) at the valve reduces the outward flow of oxygenated blood and leads to congestive heart failure as the organ stretches to accommodate a greater-than-normal volume of blood.

While replacement mechanical or biological valves can be implanted, this is traditionally done via open-heart surgery. Many patients with aortic stenosis cannot be treated because they are not considered good candidates for surgery.

Transcatheter aortic valve replacement is accomplished in much the way blocked heart arteries are opened with balloon angioplasty and stents. A tube (catheter) containing a compressed balloon is inserted into a blood vessel at the groin and threaded up to the heart. The balloon is placed inside the damaged valve and inflated to open the narrowed area. A "stent valve" consisting of bovine pericardial tissue and a stainless steel frame is then placed on the catheter, threaded up to the heart, put into position and the balloon is inflated to expand the valve and press it into the calcified tissue on the artery wall. The balloon catheter is then removed, leaving the new, functioning valve in place.


Story Source:

The above story is based on materials provided by Cedars-Sinai Medical Center. Note: Materials may be edited for content and length.


Cite This Page:

Cedars-Sinai Medical Center. "Clinical Trial Of Nonsurgical Intervention For Aortic Valve Stenosis." ScienceDaily. ScienceDaily, 20 June 2008. <www.sciencedaily.com/releases/2008/06/080620195515.htm>.
Cedars-Sinai Medical Center. (2008, June 20). Clinical Trial Of Nonsurgical Intervention For Aortic Valve Stenosis. ScienceDaily. Retrieved September 30, 2014 from www.sciencedaily.com/releases/2008/06/080620195515.htm
Cedars-Sinai Medical Center. "Clinical Trial Of Nonsurgical Intervention For Aortic Valve Stenosis." ScienceDaily. www.sciencedaily.com/releases/2008/06/080620195515.htm (accessed September 30, 2014).

Share This



More Health & Medicine News

Tuesday, September 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

How 'Yes Means Yes' Defines Sexual Assault

How 'Yes Means Yes' Defines Sexual Assault

Newsy (Sep. 29, 2014) Aimed at reducing sexual assaults on college campuses, California has adopted a new law changing the standard of consent for sexual activity. Video provided by Newsy
Powered by NewsLook.com
Scientists May Have Found An Early Sign Of Pancreatic Cancer

Scientists May Have Found An Early Sign Of Pancreatic Cancer

Newsy (Sep. 29, 2014) Researchers looked at 1,500 blood samples and determined people who developed pancreatic cancer had more branched chain amino acids. Video provided by Newsy
Powered by NewsLook.com
Colo. Doctors See Cluster of Enterovirus Cases

Colo. Doctors See Cluster of Enterovirus Cases

AP (Sep. 29, 2014) Doctors at the Children's Hospital of Colorado say they have treated over 4,000 children with serious respiratory illnesses since August. Nine of the patients have shown distinct neurological symptoms, including limb weakness. (Sept. 29) Video provided by AP
Powered by NewsLook.com
Dr.'s Unsure of Cause of Fast-Spreading Virus

Dr.'s Unsure of Cause of Fast-Spreading Virus

AP (Sep. 29, 2014) Doctors at the Children's Hospital of Colorado say they have treated over 4,000 children with serious respiratory illnesses since August. Nine of the patients have shown distinct neurological symptoms, including limb weakness. (Sept. 29) Video provided by AP
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