Blog Topic - Surgical Options Including Cow Valve Replacement Surgery (Bovine Heart Valves)

I will never forget my first interview with a heart surgeon.

Two cardiologists - Dr. Bad Bedside Manner and Dr. Chaikin - had already confirmed that my aortic valve was suffering from stenosis and regurgitation. As they both told me, I needed a new valve and I needed it soon.

That first, introductory meeting was with [1] Dr. Alfredo Trento, the Director of Cardiothoracic Surgery at Cedars-Sinai Medical Hospital in Los Angeles.

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 [2] 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 struck 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 odd but it exists. And, 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 has shown to respond 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 [3] 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 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,

[4] To learn more about Adam and his heart valve surgery book, click here.