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 efficacy of balloon-guided, laser catheter, researchers said.

Author disclosures are on the manuscript. CardioFocus, Inc., funded the study.


'/>"/>

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

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:2/9/2016)... ... February 09, 2016 , ... URise ... its newest mobility device, the StandUp Walker. Made entirely in the USA, the ... last 50 years. , StandUp Walker’s novel patent-pending design offers 2-in-1 benefits ...
(Date:2/9/2016)... MA (PRWEB) , ... February 09, 2016 , ... ... (WCRI) compares the workers’ compensation fee schedule rates and Medicare rates for a ... services covered in the report, Evaluation of the 2015 Fee Schedule Rates ...
(Date:2/9/2016)... Atlanta, GA (PRWEB) , ... February 09, 2016 ... ... partnered with Transformation Solutions, LLC to help enterprises move workloads to the cloud. ... to directly connect to their cloud without traversing the Internet. Transformation Solutions ...
(Date:2/9/2016)... , ... February 09, 2016 ... ... and e-book publishing software, in partnership with Snowfall4pod Digital, creators of the ... comprehensive book publishing, content management, global distribution and print-on-demand network. , AVALANCHE ...
(Date:2/9/2016)... ... February 09, 2016 , ... BioPlus Specialty Pharmacy (BioPlus), ... the ‘Pay It Forward’ program into 2016. BioPlus partners with several non-profit patient ... , “Since our Pay It Forward program began, we are proud to ...
Breaking Medicine News(10 mins):
(Date:2/9/2016)... 9, 2016   AllCare Plus Pharmacy announced ... Seal of Approval ® for Home Care ... standards. The Gold Seal of Approval ® is ... to providing safe and effective care.  ... underwent a rigorous on-site survey in January 2016. The ...
(Date:2/9/2016)... -- Amarantus BioScience Holdings, Inc. (OTCQB: ... Regenerative Medicine, Neurology and Orphan Diseases, today announced that ... Capital Group,s 2016 Disruptive Growth & Healthcare Conference which ... New York City . The Company,s presentation will ... pm by Gerald E. Commissiong , President & ...
(Date:2/9/2016)... Feb. 9, 2016 The new report "Global Diagnostic Ultrasound ... & Consulting group reveals that global diagnostic ultrasound devices market was ... to US$ 7,466.3 million by 2019 at a CAGR of 6.8% ... global ultrasound market has been analyzed for six geographies of ... Asia-Pacific , Latin America , ...
Breaking Medicine Technology: