Skip to Content
Home > Wellness Resources > Health Library > Coronary Artery Bypass Surgery
coronary artery bypass, the diseased sections of your coronary arteries are
bypassed with healthy artery or vein grafts to increase blood flow to the heart
muscle tissue. This procedure is also called coronary artery bypass grafting (CABG). Bypass typically requires open-chest surgery.
several newer, less invasive techniques for bypass surgery that can be used
instead of open-chest surgery in some cases. In some procedures, the heart is
slowed with medicine but is still beating during the procedure. For these types
of surgery, a heart-lung bypass machine is not needed. (For open-chest surgery,
a heart-lung machine is needed to circulate the blood and to add oxygen to it.)
Other techniques use keyhole procedures or
minimally invasive procedures instead of open-chest
surgery. Keyhole procedures use several smaller openings in the chest and may
or may not require a heart-lung machine. These techniques are still being
studied and may not be available in all medical centers.
anesthesia before the surgery that will make you
sleep. In most cases, bypass surgery is open-chest surgery. During the surgery,
your chest will be open and your heart exposed. The surgeon makes a large cut,
or incision, in the middle or side of your chest. He or she may cut through your breastbone and
spread apart your rib cage.
The surgeon removes a healthy blood
vessel—often from the leg—and attaches (grafts) it to the narrowed or blocked artery. The
new blood vessel bypasses the diseased artery to increase blood flow to the
heart. You may need just one bypass graft, or you may need more. Some people
have as many as two, three, or even four (double, triple, or quadruple bypass
surgery). How many grafts you need depends on how many arteries are narrowed or blocked and
When the surgery is complete, the doctor may use wire to
put your rib cage back together and stitches to close the incision. The surgery
can take 3 to 6 hours. You will stay in the hospital at least 3 to 8 days after
the surgery. It can take 4 to 6 weeks to recover at home. Most people are able
to return to work within 1 to 2 months after surgery.
After surgery, there will be a short
stay (1 to 2 days if there are no complications) in the intensive care unit
(ICU). In the ICU, you will likely have:
You will typically stay in the hospital from 3 to 8 days
after open-chest bypass surgery. The amount of time you stay varies and will
depend on your health before bypass surgery and whether complications develop
After discharge, recovery at home takes 4 to 6
weeks. Exercise and driving may be resumed after about 2
to 3 weeks. People who are able to return to work can usually do so within 1 to
2 months, depending on the type of work they do.
Some people find that they
experience heightened emotions (such as a greater tendency to cry or otherwise
show emotion in ways that are unusual compared with before the procedure) for
up to a year following surgery.
After your surgery, your doctor may suggest that you attend a
cardiac rehabilitation program. In cardiac rehab, a
team of health professionals provides education and support to help you
recover. Recovery includes physical therapy, respiratory therapy, occupational
therapy, and diet counseling.
The rehab team can help you make new, healthy habits,
such as eating right and getting more exercise.
The success of bypass surgery also depends on you.
You can do things that can help you stay healthy and prevent problems. You will take medicines, and you may need to make lifestyle changes. These things help your bypass grafts last and
stay open longer.
If you smoke and don't quit, you won't get the most benefit from bypass
surgery. You may need to make some other big changes, like eating right,
getting regular exercise, and losing weight. A cardiac rehab program can help you make these lifestyle changes.
You will likely take medicines that prevent blood clots, lower cholesterol, and manage blood pressure. Along with lifestyle changes, these medicines can help you get the
most benefit from bypass surgery.
Bypass surgery is not a cure
for heart disease. That's why medicine and lifestyle changes are so important. Without them, you
raise your risk of getting new places in your arteries that are narrowed or blocked. If this happens, you may need another surgery.
everyone with coronary artery disease needs bypass surgery. Some people can be
angioplasty with stents. Others use medical therapy,
which involves making lifestyle changes and taking medicines. Some people use
both of those treatments. Your doctor is likely to recommend bypass surgery
only if you will benefit from it and if those benefits are greater than the
Your doctor may advise bypass surgery if:
Your choice may depend on the number of arteries that are affected or which arteries are affected. Talk with your doctor
about the best treatment for you. The best treatment for you may also depend on your age, your health, and
how much your angina is affecting your quality of life.
surgery has been done for more than 40 years. In the United States, it is one of the most common major surgeries. But it has some serious risks.
The risks of bypass surgery include:
Other risks include return of angina, problems from
anesthesia, and infections at the site of the chest incision. Some people also
have memory loss and trouble thinking clearly. These problems are most common
in older people and tend to improve several months after surgery.
Your chances of having a serious problem with bypass surgery increase with age. Your risk is also higher if you have other problems such
as diabetes, kidney disease, lung disease, or
peripheral arterial disease. Talk
with your doctor to find out how your health affects your risk.
When bypass surgery is clearly
needed, surgery improves symptoms and in some cases prolongs life. But in
many situations, the reasons for doing bypass surgery instead of other
treatments are less clear.
In each case, the cardiac surgeon or cardiologist should
be able to clearly explain why bypass surgery is preferred over medicine or
angioplasty. Sometimes, a second opinion can be helpful when it is not clear
that surgery needs to be done.
Transmyocardial laser revascularization (TMR) is sometimes used
along with bypass surgery. TMR uses a laser beam to improve blood flow
to the heart and relieve angina. It is not common but may be done to reach areas of the heart
where bypass grafting does not work as well. And it is not the right treatment for everyone.
Complete the surgery information form (PDF)(What is a PDF document?) to help you prepare for this surgery.
Bravata DM, et al. (2007). Systematic review: The comparative effectiveness of percutaneous coronary interventions and coronary artery bypass graft surgery. Annals of Internal Medicine, 147(10): 703–716.
Sabik JF, et al. (2011). Coronary bypass surgery. In V Fuster et al., eds., Hurst's The Heart, 13th ed., vol. 2, pp. 1490–1503. New York: McGraw-Hill.
Gray RJ, Sethna DH (2012). Medical management of the patient undergoing cardiac surgery. In RO Bonow et al., eds., Braunwald’s Heart Disease: A Textbook of Cardiovascular Medicine, 9th ed., vol. 2, pp. 1793–1810. Philadelphia: Saunders.
Morris DC, et al. (2011). Management of the patient after cardiac surgery. In V Fuster et al., eds., Hurst’s The Heart, 13th ed., vol. 2, pp. 1504–1512. New York: McGraw-Hill.
Tarakji KG, et al. (2011). Temporal onset, risk factors, and outcomes associated with stroke after coronary artery bypass grafting. JAMA, 305(4): 381–390.
Other Works Consulted
Fihn SD, et al. (2014). 2014 ACC/AHA/AATS/PCNA/SCAI/STS focused update of the guideline for the diagnosis and management of patients with stable ischemic heart disease. Circulation. DOI: 10.1161/CIR.0000000000000095. Accessed October 13, 2014.
Hillis LD, et al. 2011 ACCF/AHA Guideline for coronary artery bypass graft surgery: A report of the American College of Cardiology Foundation/American Heart Association Task Force on Practice Guidelines. Circulation, 124(23): e652–e735.
Kulik A, et al. (2015). Secondary prevention after coronary artery bypass graft surgery: A scientific statement from the American Heart Association. Circulation, 131(10): 927–964. DOI: 10.1161/CIR.0000000000000182. Accessed April 6, 2015.
ByHealthwise StaffPrimary Medical ReviewerE. Gregory Thompson, MD - Internal MedicineRakesh K. Pai, MD, FACC - Cardiology, ElectrophysiologySpecialist Medical ReviewerJohn A. McPherson, MD, FACC, FSCAI - CardiologyRobert A. Kloner, MD, PhD - Cardiology
Current as ofJanuary 27, 2016
Current as of:
January 27, 2016
E. Gregory Thompson, MD - Internal Medicine & Rakesh K. Pai, MD, FACC - Cardiology, Electrophysiology & John A. McPherson, MD, FACC, FSCAI - Cardiology & Robert A. Kloner, MD, PhD - Cardiology
To learn more about Healthwise, visit Healthwise.org.
© 1995-2016 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.