HOME >> BIOLOGY >> NEWS
Laser surgery halts chest pain over the long-term; scientists also looking into non-surgical TMR

In one of the largest studies to date, researchers have shown that transmyocardial revascularization, or TMR - a surgical procedure that uses a laser to drill holes in the heart - can reduce or alleviate angina (chest pain) in a majority of individuals for at least five years, according to research being presented at the American Heart Association's Scientific Sessions 2000.

Meanwhile, another study being presented today may open the door to a non-surgical form of the laser procedure.

TMR uses a carbon dioxide laser to make multiple channels in the heart for blood to flow through. Although no one is sure exactly why or how the procedure helps to reduce chest pain, it has proven to be effective over the short-term. Now the results of a new study indicate that TMR is also effective for longer periods of time. Researchers report that 60 percent of the patients in their study who've undergone TMR have had chest pain relief for at least five years.

"Whatever symptom relief these patients had at one year seems to be holding true out to five years," says Keith Horvath, M.D., lead researcher of the TMR study and assistant professor of cardiovascular surgery, Northwestern University Medical School, Chicago. "We have a significant number of patients who have experienced pain relief for as long as eight to nine years following their TMR surgery."

There are several theories as to why TMR is effective in curbing chest pain. It may be that the laser channels provide a new source of blood to the heart. Another theory is that TMR triggers angiogenesis -- the stimulation of new blood vessel growth. Yet another theory is that nerves in the affected area of the heart are destroyed, numbing the heart and thus relieving chest pain.

Horvath and his colleagues studied 65 patients whose average age was 63. All of them had severe chest pain that was not alleviated through other methods. Sixty-three percent had unstable angina, 75 percent had suffered at l
'"/>

Contact: Karen Hunter or Carole Bullock
504-670-4000
American Heart Association
13-Nov-2000


Page: 1 2 3

Related biology news :

1. Laser technique used to build micro-polymeric structure on a human hair, without harming it
2. Laser technology to map industrial plant gases available through Alberta Research Council
3. Lasers create new possibilities for biological technology
4. Laser micro-scalpel yields biological insights into tissue dynamics
5. Laser-pulse technique could aid drug design
6. Researchers at Vanderbilts Free-Electron Laser Center are developing new forms of laser surgery, improved X-ray technology, and better methods for protein identification
7. Laser technique examines movement in nucleus of living cell
8. Laser treatment reduces scarring after heart attack
9. Lasers to the aid of embryos
10. Laser light from Free-Electron Laser used for first time in human surgery
11. Laser Microscope At Cornell Images Serotonin In Live Cells

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/13/2017)... 2017 According to a new market research report ... Identity Administration, and Authorization), Service, Authentication Type, Deployment Mode, Vertical, and Region ... expected to grow from USD 14.30 Billion in 2017 to USD 31.75 ... ... MarketsandMarkets Logo ...
(Date:4/6/2017)... Forecasts by Product Type (EAC), Biometrics, Card-Based ... & Logistics, Government & Public Sector, Utilities / Energy ... Nuclear Power), Industrial, Retail, Business Organisation (BFSI), Hospitality & ... for a definitive report on the $27.9bn Access Control ... ...
(Date:4/3/2017)... WASHINGTON , April 3, 2017 /PRNewswire-USNewswire/ ... single-cell precision engineering platform, detected a statistically ... cell product prior to treatment and objective ... highlight the potential to predict whether cancer ... prior to treatment, as well as to ...
Breaking Biology News(10 mins):
(Date:10/7/2017)... ... October 06, 2017 , ... ... its ProxiMeta™ Hi-C metagenome deconvolution product, featuring the first commercially available Hi-C ... software to perform Hi-C metagenome deconvolution using their own facilities, supplementing the ...
(Date:10/6/2017)... Boston, Mass. (PRWEB) , ... October 06, 2017 ... ... spotlight female entrepreneurship within the healthcare and technology sector at their fourth annual ... six panels featuring 30 inspiring speakers and the ELEVATE pitch competition showcasing early ...
(Date:10/5/2017)... ... , ... LabRoots , the leading provider of educational and interactive virtual ... to cancer research with a month-long promotion supporting the advancement of breast cancer research ... use promo code PinkRibbon to get 10 percent off their purchase of every the ...
(Date:10/5/2017)... ... October 05, 2017 , ... ... new applications of its Nanobind DNA/RNA extraction technology . Nanobind is a ... on the surface and that can be used for a wide variety of ...
Breaking Biology Technology:
Cached News: