Grafts used in Coronary Bypass surgery.

  • Thread starter Manish7
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In summary, the conversation discusses the use of different grafts for coronary artery bypass, with the great saphenous vein (GSV) being previously used, but now the internal mammary artery (IMA) is the preferred choice due to its lack of atherosclerosis and longer life expectancy of up to 10 years. The speaker raises a question about the reasons for the IMA's resistance to atherosclerosis and if it has any special mechanisms to prevent it. They also mention the tendency for atherosclerosis to occur when the IMA is used as a graft, possibly due to underlying risk factors. The speaker also inquires if this is a homework or coursework question, possibly referring to a previous conversation.
  • #1
Manish7
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Previously graft for coronary artery bypass was great saphenous vein (GSV) still being used,but now Internal mammary artery(IMA) is the graft of choice.
Because IMA doesn't atherosclerose at alland all the vessels of upper limb, and its life is upto 10years.
I need to put up query why it is that it doesn't atherosclerose, is it due to anything related to perfusion or it possesses any mechanism to avoid it which these large arteries such as aorta , coronary doesn't ?
When used as a graft it shows tendency to atherosclerose (as its life expectancy is 10 years), keeping in mind the major risk factors for atherosclerosis present.
 
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  • #2
Is this a homework or coursework question?
 
  • #3
I replied in the previous thread of mine.
 

1. What are the different types of grafts used in coronary bypass surgery?

The most common types of grafts used in coronary bypass surgery are the internal mammary artery (IMA), saphenous vein, and radial artery. Other less frequently used grafts include the gastroepiploic artery and the inferior epigastric artery.

2. How do these grafts differ from each other?

The IMA is a small artery located in the chest that is often used for coronary bypass surgery due to its high success rate and long-term durability. The saphenous vein is a larger vein located in the leg and is often used when the IMA is not available. The radial artery is a smaller artery located in the arm and is becoming more popular due to its similar success rate to the IMA.

3. What factors determine which graft is used in a coronary bypass surgery?

The choice of graft used in a coronary bypass surgery depends on several factors such as the location and severity of the blockage, the patient's overall health, and the surgeon's preference and experience. The goal is to use the most suitable and effective graft for each individual patient.

4. What is the success rate of grafts used in coronary bypass surgery?

The success rate of grafts used in coronary bypass surgery varies depending on the type of graft used, the skill of the surgeon, and the patient's overall health. However, on average, the success rate for coronary bypass surgery is around 90-95%.

5. Are there any risks or complications associated with using grafts in coronary bypass surgery?

Like any surgical procedure, there are potential risks and complications associated with using grafts in coronary bypass surgery. These may include infection, bleeding, blood clots, graft failure, and complications related to anesthesia. However, with proper surgical techniques and post-operative care, these risks can be minimized.

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