JAN 14, 2016 2:32 PM PST

Bioprosthetic Valves Safer than Mechanical Valves for Aortic Valve Replacement Procedures

WRITTEN BY: Kara Marker
The aortic valve regulates blood flow by opening and closing, and when it stops working an aortic valve replacement (AVR) surgery must be done for blood flow to resume like normal, delivering oxygen and nutrients to the body tissues (The Society of Thoracic Surgeons). In an evaluation of 13 studies, scientists from the University of Sydney in Australia determined which replacement was best: mechanical or bioprosthetic valves.
 

Although the researchers found that mechanical valves, made of metal, lasted twice as long as bioprosthetic valves, made of tissue, the bioprosthetic valves were much less likely to cause blood clots. Patients with mechanical valve replacements were also more likely to experience a major bleeding event post-operation.
 
"This is a complex decision that requires up-to-date evidence,” said Paul G. Bannon, PhD. However, the review, published in The Annals of Thoracic Surgery, promoted the bioprosthetic valves as a better choice most of the time.
 
Bannon and his colleagues looked at the condition of AVR recipients 15 years after surgery. From 13 studies, AVR surgery patients were between the ages of 40 and 70 years old. Although there was no reported difference in survival, stroke rate, or rate of endocarditis, the team concluded that a higher risk of a major bleeding incident was more dangerous than a prosthetic valve needing replacement.
 
Additionally, because of the associated risk with blood clots, patients receiving a mechanical valve must be prescribed anticoagulant medication for the duration of their lives.
 
"We hope that our results can give future patients needing AVR more information to help them choose the appropriate replacement valve for their condition,” Bannon said.
 
Source: Elsevier Health Sciences
 
About the Author
  • I am a scientific journalist and enthusiast, especially in the realm of biomedicine. I am passionate about conveying the truth in scientific phenomena and subsequently improving health and public awareness. Sometimes scientific research needs a translator to effectively communicate the scientific jargon present in significant findings. I plan to be that translating communicator, and I hope to decrease the spread of misrepresented scientific phenomena! Check out my science blog: ScienceKara.com.
You May Also Like
MAY 03, 2021
Cardiology
Task Force IDs 7 Costly Medical Procedures With No Benefit
MAY 03, 2021
Task Force IDs 7 Costly Medical Procedures With No Benefit
Researchers have identified a surprising number of health screens that are given to patients who may not need them. Thes ...
JUL 27, 2021
Cardiology
Researchers Advise Those Considering Pregnancy to Check Heart Health
JUL 27, 2021
Researchers Advise Those Considering Pregnancy to Check Heart Health
Scientists have examined the associations between cardiovascular problems before a pregnancy and complications during la ...
AUG 08, 2021
Cardiology
Strong Links Between PTSD and Heart Disease
AUG 08, 2021
Strong Links Between PTSD and Heart Disease
The link between heart disease and stress is well known, but researchers still have a lot to learn about that associatio ...
SEP 07, 2021
Health & Medicine
Vaccines- a Long History of Cost-Benefit Analysis
SEP 07, 2021
Vaccines- a Long History of Cost-Benefit Analysis
Vaccination and new treatments for diseases have remained topics of skepticism since their inception. When it came to an ...
SEP 14, 2021
Health & Medicine
The Magnitude of Cardiovascular Disease- New Insights and Ways Forward
SEP 14, 2021
The Magnitude of Cardiovascular Disease- New Insights and Ways Forward
Among healthcare professionals, it is common knowledge that cardiovascular disease is the leading cause of death in the ...
SEP 28, 2021
Drug Discovery & Development
The FDA approves drug to treat a bad cholesterol in children
SEP 28, 2021
The FDA approves drug to treat a bad cholesterol in children
Familial hypercholesterolemia (FH) is a genetic disorder that afflicts approximately 1 in 250 people. Interestingly, whi ...
Loading Comments...