Navigation Links
Visually guided laser may be viable treatment for abnormal heartbeat
Date:5/25/2010

A new treatment known as a visually-guided laser-balloon catheter successfully interrupted abnormal electrical pulses in patients and pigs with intermittent, irregular heartbeats, in a study reported in Circulation: Arrhythmia and Electrophysiology, a journal of the American Heart Association.

Severe cases of irregular heartbeat may require a procedure called ablation, which destroys a group of "misfiring" cells to stop abnormal electrical impulses that cause erratic heartbeats.

Investigators aimed at cells in the pulmonary veins that carry blood from the lungs to the heart. In the clinical part of the study, they ablated the misfiring cells with 100 percent accuracy. In 84 percent of the pulmonary veins treated, electrical pulses ceased after just one set of laser treatments. Three months after treatment, 90 percent of the treated veins remained inactive.

Unlike other catheters that rely on X-rays for visual guidance, in the new treatment doctors use a slender instrument called an endoscope that provides continuous real-time images. This allows investigators to aim the laser at precise locations in the pulmonary veins. The investigators destroyed cells in an overlapping pattern to completely "disconnect" them and prevent new electrical connections from forming later.

The study's clinical component included 27 patients, average age 53, two-thirds male, with diagnosed intermittent, abnormal heartbeat (called paroxysmal atrial fibrillation, or PAF). All patients had tried at least one drug that did not relieve their symptoms.

For the animal model, the scientists examined pigs because their hearts are structured similar to humans. The investigators inactivated abnormally functioning pulmonary veins 97 percent of the time after the first set of laser-energy treatments. Four weeks later, 80 percent of the ablated veins were still inactive.

Additional research is needed to determine long-term safety and effica
'/>"/>

Contact: Maggie Francis
maggie.francis@heart.org
214-706-1382
American Heart Association
Source:Eurekalert

Page: 1 2

Related medicine news :

1. Lighthouse International Introduces a New, Customizable, Low-Vision Simulator That Shows How the World Looks to People Who Are Visually Impaired
2. LaundryView(R) Makes Doing Laundry More Convenient for the Visually Impaired
3. X-ray guided steroid injections effectively treat hamstring tendonitis, study suggests
4. Guided Meditation Made Available to Everyone for Stress Awareness Month
5. Office-based ultrasound-guided FNA superior in diagnosing head and neck lesions
6. Guided Care participants rate quality of health care high
7. NEI Guided Nutrition Program(TM) is Second Entrant in Medical Arsenal for Neuro-Endocrine-Immune Supersystem(C) Product and Testing Protocols
8. Dilon Diagnostics Gamma-Guided Localization System Cleared by FDA
9. Dilon Diagnostics Gamma-Guided Localization System Cleared by FDA
10. Antibody-guided drug shows encouraging activity in metastatic breast cancer
11. Simulated training for ultrasound-guided procedures improves safety without risk to patients
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/22/2014)... 2014 (HealthDay News) -- All sexually active women ... common sexually transmitted infections: chlamydia and gonorrhea, according ... Task Force. The task force noted ... 24 years of age and pregnant women. ... noticeable symptoms. As a result, many infections go ...
(Date:9/22/2014)... HealthDay Reporter MONDAY, Sept. 22, 2014 (HealthDay ... months and older be vaccinated for the upcoming flu season. ... recommendations to advise that the youngest kids should have two ... wants parents of children aged 2 to 8 to consider ... flu shot if it,s readily available. "It,s important to ...
(Date:9/22/2014)... have found that an anticonvulsant drug may help in ... dozens of antibiotics target what bacteria do, their study ... are created, and they found there is a way ... as there is growing concern worldwide about how antibiotic ... World Health Organization has declared that antibiotic resistance is ...
(Date:9/22/2014)... (PRWEB) September 22, 2014 Quincy ... the United States, promotes National Self-Improvement Month ... that all individuals should have access to self-improvement ... aging. , The demand for products that preserve ... than ever before. For over six years, Quincy ...
(Date:9/22/2014)... 22, 2014 (HealthDay News) -- Scans of young ... to read. This finding could potentially allow doctors ... difficulties early on, preliminary research suggests. "Early ... with dyslexia as well as most neurodevelopmental disorders," ... associate professor of child and adolescent psychiatry at ...
Breaking Medicine News(10 mins):Health News:Screen Women for Chlamydia, Gonorrhea, Experts Say 2Health News:Pediatricians Urge Flu Vaccine for All Kids 6 Months and Older 2Health News:Pediatricians Urge Flu Vaccine for All Kids 6 Months and Older 3Health News:Quincy Bioscience Promotes National Self-Improvement Month 2Health News:Can Brain Scans Help Predict Young Children's Reading Abilities? 2
... working at the Swiss Institute for Experimental Cancer Research ... discovered that telomeres, the repeated DNA-protein complexes at the ... cell divides, also contain RNA. This discovery, published online ... understanding of how telomeres function, and may provide a ...
... Success of 2007 National IPF Awareness Week on ... Deadly Lung Disease, SAN JOSE, Calif., Oct. ... announced that the success of its fifth,annual National ... 60,members of Congress about the critical need to ...
... Oct. 4 The following statement was issued,today by ... and Janet,Jenner & Suggs, LLC: Out of public ... million,pound recall of potentially E. coli contaminated ground beef ... & SUGGS, LLC.,have established a registry for victims of ...
... Academy of General,Dentistry (AGD) was extremely disappointed by ... Health Insurance Program (SCHIP),reauthorization bill. The SCHIP bill ... included many important and beneficial dental,provisions intended to ... However, President Bush, who had threatened to veto ...
... provide tobacco cessation services for three more years, ... beBetter,Networks, Inc. (beBetter) has been awarded the West ... Health and Human Resources,for the Bureau for Public ... As the original vendor for the Quitline, beBetter ...
... canola,oil for common dietary fats in the U.S. ... and plant omega-3 fats,noted a modeling study published ... the American Dietetic Association (JADA). The study examined ... oils and canola oil-based,margarine for other margarines and ...
Cached Medicine News:Health News:New telomere discovery could help explain why cancer cells never stop dividing 2Health News:CPF Urges Congress to Increase Funding for IPF Research in 2009 Federal Budget 2Health News:CPF Urges Congress to Increase Funding for IPF Research in 2009 Federal Budget 3Health News:CPF Urges Congress to Increase Funding for IPF Research in 2009 Federal Budget 4Health News:Establishment of Topps Meat Recall Registry for Victims of E. Coli Poisoning 2Health News:Establishment of Topps Meat Recall Registry for Victims of E. Coli Poisoning 3Health News:AGD Concerned With Presidential Veto of SCHIP Reauthorization Bill 2Health News:AGD Concerned With Presidential Veto of SCHIP Reauthorization Bill 3Health News:beBetter Awarded WV Quitline Contract 2Health News:Canola Oil Can Help Americans Meet Dietary Fat Recommendations 2
(Date:9/22/2014)... Ill. , Sept. 22, 2014  AbbVie ... from several clinical studies evaluating potential new medicines ... at the upcoming 2014 European Society of Medical ... Madrid, Spain . Data being presented ... the safety and efficacy of veliparib (ABT-888), a ...
(Date:9/22/2014)... DIEGO , Sept. 22, 2014 Arena Pharmaceuticals, ... company is scheduled to present a corporate overview and ... on Friday, September 26, 2014, at 11:30 a.m. Eastern ... Hotel in New York City . ... will be available under the investor relations section of ...
(Date:9/22/2014)... According to the new ... (Equipment, Media and Reagents), by Source, by type, ... Toxicity Testing, Research, Drug Discovery) - Analysis & ... and studies the major market drivers, threats, opportunities, ... data tables and 64 figures spread through 225 ...
Breaking Medicine Technology:AbbVie to Present Clinical Study Data on Potential New Oncology Medicines at the 2014 European Society of Medical Oncology Annual Meeting 2AbbVie to Present Clinical Study Data on Potential New Oncology Medicines at the 2014 European Society of Medical Oncology Annual Meeting 3AbbVie to Present Clinical Study Data on Potential New Oncology Medicines at the 2014 European Society of Medical Oncology Annual Meeting 4Arena Pharmaceuticals to Present at the NewsMakers in the Biotech Industry Conference 2Arena Pharmaceuticals to Present at the NewsMakers in the Biotech Industry Conference 3Cell Line Development Market Worth $3.96 Billion by 2019 2Cell Line Development Market Worth $3.96 Billion by 2019 3Cell Line Development Market Worth $3.96 Billion by 2019 4
... Safety Knife with BD Xstar Blade includes ... protects the blade in prodedure and handling. ... on a grind-less process for manufacturing surgical ... sharpness and consistency. The arch style, ...
... Knife with BD Xstar Blade includes a ... the blade in prodedure and handling. ... a grind-less process for manufacturing surgical blades. ... and consistency. The arch style, single-bevel ...
... The BD Safety Knife with BD ... retractable shield that protects the blade in ... technology is based on a grind-less process ... process yields outstanding sharpness and consistency. ...
Bio-Rad's Genetic Systems HIV-1/HIV-2 PLUS O EIA is a unique assay that detects the broadest range of HIV....
Medicine Products: