Aortic valve stenosis occurs when the aortic valve narrows, constricting blood flow from the heart through the artery and to the entire body. In severe cases, it can lead to heart failure. Identifying the condition can be ...
General Physics
Aug 30, 2022
0
93
Anyone who has been on the receiving end of a dog's love and devotion knows these furry friends are nothing if not good for our hearts.
Plants & Animals
Apr 11, 2022
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11
Most people are familiar with turbulence in aviation: certain wind conditions cause a bumpy passenger flight. But even within human blood vessels, blood flow can be turbulent. Turbulence can appear when blood flows along ...
Soft Matter
Jan 13, 2020
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5
Paper is at the heart of an experimental device developed by Rice University bioengineers to study heart disease.
Materials Science
Aug 5, 2019
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39
Scientists at ETH Zurich and the South African company Strait Access Technologies are using 3-D printing to produce custom-made artificial heart valves from silicone. This could help meet an aging population's growing demand ...
Biotechnology
Jul 23, 2019
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236
Open-heart surgery to address the most common cardiorespiratory disease in dogs has been performed for the first time in Australia, at the University of Sydney's Veterinary Teaching Hospital.
Plants & Animals
Nov 15, 2017
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5
Researchers at Cummings School of Veterinary Medicine at Tufts University have discovered important biomarkers in extracellular vesicles in dogs with myxomatous mitral valve disease and congestive heart failure. This is the ...
Cell & Microbiology
Jul 14, 2017
1
263
EPFL mathematician Alfio Quarteroni and his team are building a virtual heart model based on personalized medical images that may one day help cardiologists and cardiac surgeons non-invasively diagnose pathological heart ...
Mathematics
Jun 8, 2017
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7
The human heart beats approximately 35 million times every year, effectively pumping blood into the circulation via four different heart valves. Unfortunately, in over four million people each year, these delicate tissues ...
Materials Science
May 18, 2017
0
93
Microbiologists at Trinity College Dublin have discovered a new way to prevent bacteria from growing on medical devices such as hip replacements or heart valves implanted in the human body. The discovery is a step towards ...
Cell & Microbiology
Mar 20, 2017
0
477
In anatomy, the heart valves maintain the unidirectional flow of blood in the heart by opening and closing depending on the difference in pressure on each side. They are mechanically similar to reed valves.
There are four valves in the heart (not counting the valve of the coronary sinus, and the valve of the inferior vena cava):
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