Navigation Links
Study Sheds Light on Origins of Sudden Cardiac Death
Date:12/27/2007

New imaging tecniques help researchers probe ventricular fibrillation

THURSDAY, Dec. 27 (HealthDay News) -- New information about a deadly heart rhythm disorder called ventricular fibrillation may help lead to better ways of identifying people at risk of sudden cardiac death and new treatments to help reduce their risk.

The findings are based on a study by a team of researchers from Canada, Spain and the United States.

The study found that the abrupt disruption of electrical activity within the heart muscle is organized into spiral vortices -- also called rotors -- that prevent the heart's blood pumping chambers from working in sync, something that's required for normal heart function.

The researchers looked at a number of different animal species, ranging from mice and guinea pigs to sheep and humans, and found that the frequency of ventricular fibrillation activity can be "scaled" using a universal formula related to body mass. This same method can also be used to determine the size of the core of the spiral vortices, the researchers said.

"The discovery that the rate of fibrillation changes according to body size is exciting, not only because it brings new and interesting knowledge from the point of view of evolutionary biology, but most important because it erases previous concerns in science about the relevance of studies in small animals like mice to understand the most lethal cardiac arrhythmia in people," senior author Dr. Jose Jalife said in a prepared statement.

The study was published Dec. 26 in the journal Proceedings of the National Academy of Sciences.

The scientists said these findings, made using sophisticated imaging techniques they developed, can help improve translation of ventricular fibrillation research results from animals to humans. For example, genetic variations in mice with ventricular fibrillation may also be explored in humans, and research on why
'/>"/>

Copyright©2007 ScoutNews,LLC.
All rights reserved

Page: 1 2

Related medicine news :

1. Penn study finds pro-death proteins required to regulate healthy immune function
2. New study shows promise in reducing surgical risks associated with surgical bleeding
3. Study, meta-analysis examine factors associated with death from heatstroke
4. Study suggests loss of 2 types of neurons -- not just 1 -- triggers Parkinsons symptoms
5. Study says COPD testing is not measuring up
6. Preclinical study suggests organ-transplant drug may aid in lupus fight
7. Ability to cope with stress can increase good cholesterol in older white men, study finds
8. High alcohol consumption increases stroke risk, Tulane study says
9. Mailman School of Public Health study examines link between racial discrimination and substance use
10. Pitt study finds inequality in tobacco advertising
11. Stanford study highlights cost-effective method of lowering heart disease risks
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/9/2014)... in Russia might contribute to HIV transmission and ... researchers from Boston University Schools of Medicine and ... State University, sought to discover the effect police ... cohort of HIV-positive people with lifetime of injection ... police were more likely to share needlesincreasing HIV ...
(Date:7/9/2014)... news release is available in French . ... factors in 14 year old teens, including brain structure and ... 70% accuracy who will go on to develop binge drinking ... of conscientiousness, and other variables such as life events and ... of binge drinking. Whether or not the child had ...
(Date:7/9/2014)... extinctions around the world have been linked to ... research from the National Institute for Mathematical and ... may also contribute. , In a series ... causes severe hemorrhage of internal organs in frogs, ... frogs if they are exposed to the virus ...
(Date:7/9/2014)... Allergy and Infectious Diseases (NIAID), part of the ... clinical trial of CRS3123, an investigational oral antibiotic ... C. difficile ) infection. CRS3123 (previously known as ... difficile growth while sparing normal intestinal bacteria. , ... 30 healthy men and women ages 18 to ...
(Date:7/9/2014)... poor printing on prescription labels handed out by ... errors in taking medication, according to new research ... National Institute for the Blind)., The study, published ... found that labels on prescription medications dispensed by ... for legibility. , By simply following recommended guidelines ...
Breaking Medicine News(10 mins):Health News:BU researchers relate arrests with HIV risk environment 2Health News:What drives a child to abuse alcohol? 2Health News:Study predicts ranavirus as potential new culprit in amphibian extinctions 2Health News:NIH launches Phase I clinical trial of novel drug to treat Clostridium difficile infection 2Health News:Most prescription labels fail to meet guidelines, risking dosage errors 2
... Services Outside of Houston PHOENIX, May 6 ... M. D. Anderson Cancer Center announced they will create the ... Arizona,s leading provider of health care and the nation,s leading ... unprecedented level of cancer care in Arizona.Located at US 60 ...
... May 6 The healthcare industry in ... inequalities in access to care. The public ... of the population, yet accounts for around ... http://www.newscom.com/cgi-bin/prnh/20081117/FSLOGO )Public-private partnerships offer an innovative means ...
... wife Ellen honored for generous contribution to New York University College ... ... Dr. Jan Linhart, D.D.S. and his wife, Ellen Linhart, have established ... Program at Dr. Linhart’s alma mater. In honor of this act ...
... with a humanitarian award at a glittering ceremony in London last night. ... ... of the world,s largest hospital ship charity were honored with a humanitarian ... , , ,The annual Variety Club International Humanitarian Award , whose ...
... Max Muscle Sports Nutrition,s newest product innovation is L-Tox, for advanced ... along with protective and regenerative factors. , ... Anaheim, ... Administration (FDA) www.fda.gov issued a stop product use directive ...
... small non-profit Ohio Biotech firm, has confirmed that they have decoded ... currently reported Swine Flu outbreak. , ... Albany, Ohio ... of infection and the first reported American death from the new ...
Cached Medicine News:Health News:Banner Health, M. D. Anderson Announce Cancer Care Facility for Arizona 2Health News:Banner Health, M. D. Anderson Announce Cancer Care Facility for Arizona 3Health News:South Africa not Gaining the Full Benefit of PPPs in the Healthcare Sector, Says Frost & Sullivan 2Health News:South Africa not Gaining the Full Benefit of PPPs in the Healthcare Sector, Says Frost & Sullivan 3Health News:Manhattan Dentist Inducted Into The Sir Harold Acton Society 2Health News:Mercy Ships Founders Receive Humanitarian of the Year Award From Variety Club 2Health News:Mercy Ships Founders Receive Humanitarian of the Year Award From Variety Club 3Health News:Mercy Ships Founders Receive Humanitarian of the Year Award From Variety Club 4Health News:Max Muscle Sports Nutrition Offers Support for Hydroxycut Recall 2Health News:Max Muscle Sports Nutrition Offers Support for Hydroxycut Recall 3Health News:BioTech Firm Decodes Current Swine Flu BioMarkers 2Health News:BioTech Firm Decodes Current Swine Flu BioMarkers 3
(Date:1/15/2014)... WORTH, Texas , Jan. 15, 2014  Humberto C. ... Dermatology Achievement Award" from the Journal of Drugs ... Aesthetic & Clinical Conference (ODAC). The event is January 17-20, ... Florida . The ODAC ...
(Date:1/15/2014)... MultiCell Technologies, Inc. (OTC Bulletin Board: MCET.OB ... composition of matter, biological targets, mechanism of action, methods ... This patent application describes a novel class ... which interfere with the basic homeostatic cellular processes in ...
(Date:1/15/2014)... , Jan. 15, 2014 Reportlinker.com announces ... available in its catalogue: ... Forecast and Market Analysis to 2022 ... Atopic Dermatitis - India Drug Forecast and ...
Breaking Medicine Technology:Galderma's global leader honored with a "Lifetime in Dermatology Achievement Award" by Journal of Drugs in Dermatology 2Galderma's global leader honored with a "Lifetime in Dermatology Achievement Award" by Journal of Drugs in Dermatology 3Galderma's global leader honored with a "Lifetime in Dermatology Achievement Award" by Journal of Drugs in Dermatology 4MultiCell Technologies Files Patent Application Covering New Class of RNA Therapeutics 2MultiCell Technologies Files Patent Application Covering New Class of RNA Therapeutics 3PharmaPoint: Atopic Dermatitis - India Drug Forecast and Market Analysis to 2022 2PharmaPoint: Atopic Dermatitis - India Drug Forecast and Market Analysis to 2022 3PharmaPoint: Atopic Dermatitis - India Drug Forecast and Market Analysis to 2022 4PharmaPoint: Atopic Dermatitis - India Drug Forecast and Market Analysis to 2022 5
... YORK, Oct. 26, 2011 One week after a ... most serious of skin cancers, which causes 8,000 U.S. ... Skin Association (ASA), a collaboration of patients, families, advocates, ... scientists who have made groundbreaking discoveries and unique contributions ...
... Perrigo Company (Nasdaq: PRGO;TASE) today announced that its ... $0.08 per share, payable on December 13, 2011 ... Perrigo Company is a leading global ... and generic prescription (Rx) pharmaceuticals, infant formulas, nutritional ...
Cached Medicine Technology:American Skin Association Honors Leading Physicians and Scientists; Journalist Deborah Norville 2American Skin Association Honors Leading Physicians and Scientists; Journalist Deborah Norville 3
Full Handle Laseredge Implant Blade Knife, 5.2 mm straight. Blade dimension: 16.5 mm x 5.2 mm x 4.2 mm x 1.6 mm....
Full Handle Laseredge Crescent Blade Knife, angled bevel down. Blade tip dimension: 12.7 mm x 2.0 mm x 3.8 mm....
Full Handle Laseredge Crescent Blade Knife, angled bevel up. Blade tip dimension: 12.7 mm x 2.0 mm x 3.8 mm....
Full Handle Laseredge Stab Blade Knife, 22.5 blade. Blade tip dimension: 10.7 mm x 1.8 mm x 4.2 mm....
Medicine Products: