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 VF begins, and methods of preventing it, can be studied in animals before being applied to humans, the researchers said.

More information

The American Academy of Family Physicians has more about heart rhythm problems.



-- Robert Preidt



SOURCE: University of Michigan Health System, news release, Dec. 20, 2007


'/>"/>
Copyright©2007 ScoutNews,LLC.
All rights reserved

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:10/13/2017)... SAN LUIS OBISPO, Calif. (PRWEB) , ... October 13, 2017 , ... ... with Alzheimer’s or dementia. However, many long-term care insurance companies have a waiver for ... mean is the 90-day elimination period, when the family pays for care, is often ...
(Date:10/13/2017)... ... ... Global Healthcare Management’s 4th Annual Kids Fun Run brought out many kids ... sponsored by Global Healthcare Management’s CEO, Jon Letko, is aimed at getting kids excited ... all ages; it is a non-competitive, non-timed event, which is all about having fun ...
(Date:10/13/2017)... ... 13, 2017 , ... Coveros, a leader in agile coaching ... contract by the Center for Medicare and Medicaid Services (CMS). The Enterprise Agile ... of Agile methodologies in a consistent and high value manner across CMS programs. ...
(Date:10/12/2017)... ... October 12, 2017 , ... First Healthcare ... program management, will showcase a range of technology and learning solutions at the ... Convention and Expo to be held October 14–18, 2017 at the Mandalay Bay ...
(Date:10/12/2017)... ... October 12, 2017 , ... The company has developed ... consumer and regulatory authorities worldwide. From Children’s to Adults 50+, every formula has ... highest standard. , These products are also: Gluten Free, Non-GMO, Vegan, Soy ...
Breaking Medicine News(10 mins):
(Date:10/4/2017)... -- According to the Centers for Disease Control and Prevention (CDC), influenza ... Care is helping communities across Massachusetts , ... no-cost* flu shots through the end of the month. *Some ... ... flu shot is by the end of October, according to the Centers ...
(Date:10/2/2017)... -- Halo Labs announces the European launch of their new low ... MIBio 2017 in Cambridge, U.K on October ... biopharmaceutical samples with unprecedented speed and sensitivity while using far less ... Imaging. ... analysis system ...
(Date:9/27/2017)... YORK , Sept. 27, 2017  DarioHealth Corp. (NASDAQ: DRIO), a ... today announced that its MyDario product is expected to appear on The ... when The Dr. Oz Show airs in your area: http://www.doctoroz.com/page/where-watch-dr-oz-show ... The nine-time Emmy award-winning, The Dr. Oz ... The ...
Breaking Medicine Technology: