The average living span of a cow ’s valve is 10 to 15 years . agree to the study , those who get their aortal valves replaced with moo-cow ’ valve need to get the substitution done again in about 10 to 15 old age , especially the unseasoned patient . In some case , the cow ’s valve may last up to 20 age .
To know more about the longevity of the cow ’s valve , firstly it is important to know about the use of it . The aorta is the largest stock vessel of the dead body and supplies stock to the whole eubstance . The aortic valve is the valve between the heart ventricle and the aorta , which keep back flow of the blood from the heart to the aorta . When there ’s a flaw in the aortal valve , it does not function properly and this exerts extra press on the heart . This results in the weakening of the heart muscles . Generally two type of aortic flaw are hear :
Aortic Regurgitation : It is a condition in which the valve does not shut decently , so there is a back flow of or outflow of stemma . This results in improper line of descent supply to the whole consistence and special press on the heart and soul .
Aortic Stenosis : In this condition , the aortic valve does not opens properly so the required amount of blood does not reaches the aorta , resulting in increase pressure level on the heart and soul .
Cow Valve Replacement Surgery
Whenever there is any variety of disturbance in the aortal valve , it can not be treated only with medicinal drug . Here get up the need of a valve replacement . There is an option of choose a biological valve or a mechanically skillful or unreal valve . The patient is leave general anesthesia so that there is no pain sensation sensation . The incision of about 20 to 25 cm long is made and breastbone is divided . The heart ’s activity is stopped for sometime so that the valve replacement can be done effectively . During this sentence , the aorta is connect to an stilted ticker to ensure proper blood supply to the whole consistency .
The biologic valve can be made out of human tissue , which is make love as Autograft . Luckily , the tissue physiology of some beast is similar to that of homo , therefore a cow ’s or pig ’s tissue paper are also used for creating valve , know as Xenograft .
A cow ’s valve or a pig ’s tissues is a democratic choice for the aortic valve surrogate . Out of the two , moo-cow ’s valves are more commonly used . They are first treated chemically to make them compatible with the human dead body . loosely after the chemical treatment , the human body react positively because the composition of the tissues becomes compatible .
In case of pig ’s valve the actual valve is used after processing , but in case of cow , the literal valves are not used . The tissues are educe from the pericardial sack of the cow ’s heart using a very sophisticated fabrication procedure . The tissue are then converted to proper shaped valves and used for aortal valve replacement .
Choices for Aortic Valve Replacement
Some people also go for the mechanically skillful or the artificial valve which are made out of fiber or metal . The unreal valve are more perdurable and longer lasting as compared to the biologic valve ( cow ’s or pig ’s valve ) . The cow ’s valve has a life span of only about 10 to 15 years and is more prone to calcification . The mechanical or unreal valve or the other hand have a high longevity and require not to be replaced once they are fitted . It is a good selection for the unseasoned patients .
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