Why could smoking be harmful after heart bypass?

Many reasons. Healing after surgery is markedly impaired by smoking, which constricts the blood vessels that supply us with oxygen and nutrients. Heart bypass is done because of arteriosclerosis, or "hardening of the arteries, " so when you keep smoking, the new vessels in your heart begin the same process of narrowing down until they don't carry blood, resulting in new heart attacks.Also damages lungs&rest of u.
Causes blockages. Smoking increases blockages in the arteries on the heart (as well as the rest of the body). This is at least as true after bypass. Continuing to smoke significantly increases the chance of the grafts failing as well as new blockages and increases the chance you will need another operation.
YES. Yes ! smoking accerates the process of hardening and narrowing of the arteries which is what made the bypass necessary in the first place.

Related Questions

Will smoking after heart bypass harm me?

Yes knock it off. If the scar on the front of your chest doesnt convince you to stop smoking nothing will. Smoking will continue to damage your heart arteries and will also prematurely cause your grafts to fail. Never mind the ongoing risk of lung cancer, stroke, etc. Read more...
Yes. Smoking will cause your bypass grafts to close down prematurely. Studies show that the life span of a bypass is significantly shortened with the smoking (10+ years down to maybe a year or so). Do everything you can to stop smoking. If you can stop before your bypass surgery, even better as it will help in your postop recovery. Read more...

Double heart bypass and on dialysis and is smoking again. Since dying, why not?

Indeed. If you are a competent adult you have exclusive homestead rights over your body. If you decide to continue to harm yourself, in full realiazation that doing so may hasten your demise, then it's on you. This is a charged question, bordering on assisted suicide concerns. Your doctor can rightfully disagree with you, & should, but ultimately it's your life - your decision. Read more...

Smoking cigaretts after open heart sergary my friend had triple bypass open heart segary a year ago. He has continued to smoke 4-6 cigaretts a day. Recently he has been complaing of sever chest pains (similar to pains he experience with heart attach) inab

Absolutely! . Absolutely! tobacco smoke is toxic to arteries, and a major contributer to the formation of cholesterol plaques in heart arteries, cardiac bypass grafts, peripheral arteries in the limbs, and also can cause aneurysms in the aorta. Your friend's tobacco abuse contributed to the severe coronary disease in his native heart arteries, and may now be contributing to the closure of the surgical bypass grafts. The symptoms you describe (classic angina) are very concerning for recurrent blockage(s), and he needs to see his physician immediately. There are new drugs that can be very effective in helping patients stop smoking. It is imperative he quits. Read more...
Whats your ?? If you are asking whether smoking 4-6 cigarettes/d increases his chance of another heart attack or blockage of his bypasses or stents, yes it will (altho not as much as 20 cigs/d). If you are asking what you can do about it, the answer is not much, other than expressing your concern and caring for your friend. Nagging doesnt help, and often makes it worse, because he will avoid you (and others). Read more...