HOME >> MEDICINE >> NEWS
Mayo Clinic researchers redefining how heart functions

"Redefining how the heart functions is one of the first steps that could lead to revolutionary approaches to treating patients who have heart failure - 5 million and growing in the U.S. - or better yet, preventing the heart failure from developing," says Bijoy Khandheria, M.D., chair of the Division of Cardiology at Mayo Clinic in Arizona and one of the co-authors of the study.

The heart is often thought as a "piston pump." Contraction (systole) occurs when the heart moves blood from its left ventricular cavity into the body's circulatory system, and relaxation (diastole) is when the heart fills with new blood.

According to Marek Belohlavek, M.D., Ph.D., senior author of the study, "This research focuses on the cardiac left ventricle. Results show that the left ventricle ejects blood into the body's blood vessels through well synchronized electrical and mechanical waves traveling from the heart's tip (apex) towards the base of the heart."

Dr. Belohlavek, a scientist at Mayo Clinic in Rochester, Minn., engaged in more accurately defining how the heart functions, explains, "Relaxation (diastole) is much more important than we previously realized. Diastole is actually comprised of an active and passive expansion phases, which efficiently fill the pumping chamber with blood. The newest discovery is the fact that there is an additional contribution to the active relaxation phase by muscle layers close to the outer surface of the pumping chamber."

Partho Sengupta, M.D., lead author of the study who designed the project under the mentorship of Drs. Belohlavek and Khandheria, notes further: "By a brief shortening, cardiac muscle in these outer layers helps to 'unwrap' the rest of the left ventricle after each twisting contraction. we plan to study whether impairment of this active 'unwrapping' in some heart diseases could contribute to left ventricular failure and, if yes, we hope to find ways to prevent such impairment."


'"/>

Contact: Traci Klein
newsbureau@mayo.edu
507-284-5005
Mayo Clinic
2-Dec-2005


Page: 1

Related medicine news :

1. Clinical data suggest potential versatility of ALIMTA-based regimens in lung cancer
2. Susan G. Komen for the Cure and American Society of Clinical Oncology partner in national initiative
3. Clinical review -- A psychological approach to the management of irritable bowel syndrome
4. NHLBI Asthma Clinical Research Networks and ALA ACRC Network to present at ATS 2007
5. New Mayo Clinic MRI technology enables noninvasive liver diagnoses
6. Clinical trial data for Perforomist Inhalation Solution presented at International ATS Conference
7. Elsevier launches the Clinics on ScienceDirect
8. Clinical guidelines for blood conservation during cardiac procedures developed
9. Clinical trial data for Perforomist Inhalation Solution to be presented at ATS on May 20, 2007
10. Mayo Clinic research in cardiovascular disease presented at Experimental Biology 2007
11. Mayo Clinic study finds heart transplant patients benefit from new approach to immunosuppression

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


(Date:3/30/2020)... ... March 30, 2020 , ... Frontline Public ... the country. In an effort to keep frontline officers and the public safe ... with community members while minimizing direct contact. They are also freeing up 911 ...
(Date:3/28/2020)... (PRWEB) , ... March 27, 2020 , ... ... practice OrthoSC is now offering telemedicine as an alternative approach to ... of the practice’s doctors in the comfort of their own home or office ...
(Date:3/27/2020)... ... March 27, 2020 , ... Justin ... NJ Top Docs. Dr. Kubeck has been approved every year consecutively since 2016. ... specializes in Spinal Surgery. , Dr. Kubeck’s medical education began at Thomas ...
(Date:3/22/2020)... ... 2020 , ... The modular construction industry, led by trade ... been working with state and federal officials on ways to support housing and ... modular construction to address the nation’s affordable housing crisis well before the COVD-19 ...
(Date:3/22/2020)... ... 22, 2020 , ... In times of crisis, like the ... luxury. The world’s focus is on practical matters - on self-isolation, social distancing, ... control in chaos. However, it’s during these times that “self-awareness” is crucial, according ...
Breaking Medicine News(10 mins):
(Date:3/27/2020)... ... 27, 2020 , ... The Haute Beauty Network, well known ... as a leading weight-loss and Body expert representing the Los Angeles Market and ... prominent collective of leading doctors nationwide. The invitation-only exclusive network maintains elite as ...
(Date:3/20/2020)... ... March 20, 2020 , ... Users who have tested positive for COVID-19 ... crowd-sourced database of detailed location information, such as a specific building on campus or ... exposure to the virus. The app will also help people to more easily recall ...
(Date:3/19/2020)... ... March 19, 2020 , ... Combining multiple food allergies into ... immunotherapy, according to research scheduled for presentation at the 2020 American Academy of ... the situation with coronavirus disease 2019 (COVID-19). , A retrospective review was ...
Breaking Medicine Technology:
Cached News: