Cardiology

Family history doubles aortic stenosis risk

The risk of aortic stenosis doubles when a first degree relative had the disease, according to research presented at ESC Congress 2013 today by Dr. Mattis F. Ranthe from Denmark. The study of 4.2 million people from Danish ...

Cardiology

Keyhole may trump robotic surgery for mitral valve repair

Keyhole surgery for heart valve repair may trump robotic surgery, because it is associated with lower rates of subsequent heart flutter and blood transfusions, and a shorter hospital stay, reveals research looking at the ...

Cardiology

Weight-loss drug Belviq seems safe for heart, study finds

For the first time, a drug has been shown to help people lose weight and keep it off for several years without raising their risk for heart problems—a safety milestone that may encourage wider use to help curb the obesity ...

Diseases, Conditions, Syndromes

Bartonellosis: Diagnosing a stealth pathogen

(Medical Xpress)—NC State professor of veterinary internal medicine Ed Breitschwerdt has spent the last couple of decades working with Bartonella, bacteria historically associated with "cat scratch disease." Bartonella ...

Medical research

New polymer heart valve implanted in first patient

Caltech researchers have helped to design a new generation of heart valves that are longer-lasting, cost less to manufacture, and are more biocompatible than options that are currently available to patients. As part of an ...

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Heart valve

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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