Cow Valve Replacement Surgery - Bovine Valves
Blog Topic - Surgical Options Including Cow Valve Replacement Surgery (Bovine Heart Valves)
I will never forget my first interview with a heart surgeon.
My cardiologists - Dr. Wyman and Dr. Chaikin - had already confirmed that my aortic valve was suffering from severe stenosis and regurgitation. As they both told me, I needed a new valve and I needed it soon.
That first, surgical interview I held was with Dr. Alfredo Trento, the Director of Cardiothoracic Surgery at Cedars-Sinai Medical Hospital in Los Angeles, California.
Dr. Trento’s office was six stories up and looked across the Hollywood Hills. It was quite impressive.
“I’ve looked at your film Adam,” Dr. Trento said as he sat down in his leather chair, “You definitely need a new valve.” He continued, “Now you have some options. You can select a pig valve. You can select a cow valve. You can select an artificial or mechanical valve. Or, you can opt for your own valve using the Ross Procedure.”
I’ll never forget that moment. I gazed over at my mom who was sitting two feet away from me. “A pig valve? A cow valve?” I questioned Dr. Trento, “You mean I could have a cow valve used to replace my diseased aortic valve?”
Dr. Trento went on to explain that cow valves have been used for many years as valve replacements. By some, strange twist of evolutionary coincidence, our valves and cow valves are similar in tissue physiology. That makes them a frequent choice for heart valve replacement.
While I opted to not use a cow valve (I underwent the Ross Procedure), I was always curious to know more about bovine valves and who manufactures them. It is quite an odd curiosity, I admit, but it exists. Plus, I needed to better research cow valves for my book.
First off, you should know that bovine valves are chemically treated for transplantation from the animal to the human patient. The human body typically responds positively to this procedure because of the similarities in tissue composition.
Second, unlike pig valve replacement, a bovine valve uses the tissue of the cow’s heart NOT the actual structure. I better understood this when I visited Edwards Lifesciences for a heart valve manufacturing tour. Essentially, the cow valve results from a sophisticated manufacturing process in which the pericardial sack (the tough tissue sac that surrounds the heart of a cow) is collected and then processed into proper shape. Very, very, very, very interesting, right?
The disadvantage, however, is that the animal valve is not as durable as a human valve (given the lifespan of a cow) and is more susceptible to calcification on the valve leaflets following a heart valve replacement operation.
The average lifetime of a cow valve is about 10 to 15 years. Although some research suggests that cow valve replacements may last over 20 years. Therefore, younger patients opting to have cow valve replacement surgery may need to have a re-operation at a future time.
I hope this helps better explain cow valve replacement surgery and bovine valve replacement surgery.
Keep on tickin!
About The Author: Adam Pick is a double, heart valve surgery patient and author of The Patient’s Guide To Heart Valve Surgery. This surgeon-recommended book integrates the clinical facts of heart valve surgery with the personal experiences of 135 former valve surgery patients to help patients and their caregivers better understand the opportunities, problems and challenges of heart valve surgery. To learn more about Adam and his heart valve surgery book, click here.
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November 9th, 2009 at 11:06 am
I have had an mechanical artificial heart valve for nine years. I had a saliva stone surgery last week. I have two cracked teeth now. I have been on antibotics for 14 days, Can I have dental work done without taking lovinox shots? I had an epidural for my neck four weeks ago and had to take lovinox and stop the coumadin for four days. It is so expensive and if not necessary I would hope I could have the work done on my teeth without it.I would still be on antibotics. Thanks M. Dodson
February 5th, 2010 at 11:17 am
I had heart surgery in August 4 bypasses and valve replacement with the bovine–shortly after surgery–started with itching and it is steadily getting worse–I have been eliminating medications as I am also diabetic–I am now on Insulin and will be starting on prednisone 40 mg for 1 wk and then 20 for 1 wk–watching blood sugars very closely to regulate insulin. My question is have you ever heard of someone having a reaction to this valve??