query regarding CABG

My father a 67 years old,no history of diabetes or b.p.or cholesterol. but a smoker.On 29/1/2010 he complained of severe chest pain.He had no other complain before that.He is now normaland fully fit to do cycling and other normal activities.Doctors in India made coronary angiogram and the report is as follows:LMCA:normal, LAD:mid segment shows 75% stenosis, Diagonals-D1 origin shows 90% stenosis LCX:non dominant-mid segment shows minor plaques, RCA:dominant-Proximal segment shows 99% stenosis.99% stenosis at the crux extending into origin of PDA and PLV LV:Good LV systolic function with LVEF-=65%,Final diagonosis:Double vessel coronary artery disease with good LV systolic function(on echocardiogram) and recommended for CABG. I want to know whether it needs to be performed immediately or there is any other alternative to CABG for this patient.He is now normal and doctors have prescribed him valsartan,atorvastatin,clopidogrel and aspirin capsules.

[RadioAstronomyObserver]

  Any blockage is bad but when you have blockages everywhere! ?!  Wow!

[cblmn7]

with so many blockages cabg is a good choice and is why the dr recomended it.i had 4 blockages when i had my heart attack and they stented them since then i have had 5 more  stents so sometimes i wish they would of just did the bypass first

[ed34]

But a bypass doesn't prevent further blockages from occurring.

[anandbharti]

My personal experience: Two stents  eight years ago blocked within weeks. Problem solved with CABG. The bypass grafts are still completely open after eight years.
The attractive thing about stenting is you can have it done on a Friday and be at work after a weekend's rest. The bad thing, as I mentioned before, is the higher likelihood of restenosis. The new drug eluting stents have reduced incidences of restenosis but at the cost of having to take blood thinners for longer period of time or for life.
With CABG recovery takes longer and it is  a costlier procedure, however, over the long term that may be a better option.

I wish your father well.