Why is PCI not the best choice for moved out coronary artery disease?

It quotes in Hurst's: The Heart that PCI should not be used in left principal coronary artery disease where the distal arteries are not protected by at least one open bypass graft. Why is this?
Answers:
The buzzword(s) at the moment are drug-eluting stents. This is an nouns of ongoing research.
You will find the latest via MEDLINE, not in a textbook.
CABG is superior to PCI in multivessel CAD (two or more diseased arteries) in lingo of death, myocardial infarction and repeat revascularization - regardless of type of stent (bare metal or drug-eluting).
A recent study casts doubt on the usefulness of PCI in non-acute cases. The COURAGE trial concluded that treating near PCI for stable coronary artery disease did not reduce the risk of death, myocardial infarction, or other major cardiovascular events when added to medical psychiatric help. (Wikipedia)
Angioplasty does not cure the cause of the blockage in your arteries. Your arteries may become narrow again. Follow your heart-healthy diet, exercise, stop smoking (if you smoke), and dwindle stress to help lower your chances of having a blocked artery again. Your condition care provider may prescribe medicine to help lower your cholesterol. (MedlinePlus)
CABG surgery is perform to relieve angina in patients whose illness has not responded to medication and are not good candidates for balloon angioplasty. CABG is best performed surrounded by patients with multiple blockages in multiple locations, or when blockages are located in in no doubt arterial segments which are not well-suited for PCI. CABG is often also used in patients who hold failed to attain long-term success following one or more PCI procedures. CABG surgery has be shown to improve long- term survival in patients near significant narrowing of the left main coronary artery, and in patients next to significant narrowing in multiple arteries, especially in those with decrease heart muscle pump function. (MedicineNet)
Of all angiographic procedures, PCI has the highest risk of contrast nephropathy.(Merck) Source(s): http://en.wikipedia.org/wiki/Percutaneou…
http://www.nlm.nih.gov/medlineplus/ency/…
http://www.medicinenet.com/coronary_angi…
http://www.merck.com/mmpe/sec07/ch070/ch…
Yet again the first answerer (a top contrib, no less) misses the point of the press.

Simply put, most patients' hearts get most of their blood supply from the left basic. Even in the best of hands, PCI of the left most important has a disk of abrupt closure or vessel dissection. As a result of this, the heart would suddenly lose its blood supply. A very discouraging thing.

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