A coronary bypass reroutes blood around blocked heart arteries using a healthy vessel taken from elsewhere in the body. It is one of the most studied operations in medicine, and for people with widespread or diabetic coronary disease it prolongs life more reliably than stents. India's high-volume cardiac units deliver it with outcomes that match the best, at a fraction of the cost.
In coronary artery disease, the arteries feeding the heart muscle narrow with fatty plaque, starving the heart of blood. A bypass takes a healthy blood vessel — an artery from inside the chest wall, an artery from the arm, or a vein from the leg — and grafts it above and below a blockage, giving blood a new route around it. Several blockages can be bypassed in one operation.
The heart can be temporarily stopped while a heart-lung machine takes over ( on-pump ), or the grafts can be sewn onto a still-beating heart ( off-pump ). More than 60% of bypasses in India are done off-pump, which can mean less stroke and kidney strain and a quicker recovery; at experienced centres the long-term results of the two are similar. 2,3 Arterial grafts, especially the internal mammary artery, stay open longer than vein grafts and are preferred where possible.
Bypass is generally recommended when several arteries are blocked, when the crucial left main artery is involved, or when a person with diabetes has widespread disease — situations where surgery protects the heart better than stents. It is also considered when angina persists despite medication and stents. An angiogram maps the blockages, and a heart team weighs bypass against stenting for each patient.
Bypass versus stents is one of the best-studied questions in cardiology. We give the trial numbers and their context together.
Read the trial with its limits. FREEDOM found bypass reduced death and heart attacks but carried a slightly higher early stroke risk than stents. 1 The right choice is not universal — a single simple blockage is often better stented. This is exactly the kind of decision a second opinion is worth having before you commit.
Bypass is safe in experienced hands but is major surgery. These are what a surgeon discusses at consent.
The angiogram, the recovery time before a long flight, and cardiac rehab are the parts to plan for.
Cardiac outcomes track closely with a unit's volume and its intensive-care backup. These are the accredited centres in our network.
Gurgaon
Mumbai
Bengaluru
Director
Max Super Specialty Hospital Gurgaon
Venkateshwar Hospital, New Delhi
Aakash Healthcare Super Speciality Hospital
Consultant
Apollo Hospital, Bangalore
Director and Head
Sanar International Hospital
It depends on your anatomy. For several blockages, left main disease, or diabetes with multivessel disease, bypass generally protects the heart better; a single accessible blockage is often stented. 1 A heart team weighs both for your case — and it is a good thing to take a second opinion on.
In experienced hands the death rate is similar to on-pump, with somewhat less stroke and kidney strain and a quicker recovery. 3 Not every patient suits it; your surgeon will advise.
At experienced centres the risk of dying is roughly 1–3%, rising with age and other illness. 2 Indian high-volume units report outcomes comparable to the best internationally.
Most patients plan 3–4 weeks in India, and the team confirms when long-haul travel is safe. Flying too soon after open-heart surgery is a real risk.
Arterial grafts, especially the internal mammary artery, tend to stay open for many years; vein grafts can narrow sooner. Medication, diet and follow-up strongly influence how long they last.
Every clinical claim on this page traces to one of these. Where we could not source a figure from peer-reviewed literature, we have left it out rather than estimate it.
This page is written for patients and their families and is not medical advice. Health Route is a facilitator, not a healthcare provider. Whether bypass or stenting is right for you is a decision for a heart team that has examined you and reviewed your angiogram.
Farkouh ME, et al. Strategies for Multivessel Revascularization in Patients with Diabetes (FREEDOM trial).
New England Journal of Medicine, 2012; and 8-year Follow-On, JACC 2019. 5-year death/MI/stroke 26.6% (stents) vs 18.7% (bypass); lower long-term mortality with bypass; slightly higher early stroke.
Early outcomes in patients undergoing off-pump coronary artery bypass grafting.
Indian Journal of Thoracic and Cardiovascular Surgery, 2018. Off-pump used in >60% of Indian CABG; contemporary CABG mortality 1–3% at experienced centres.
Off-pump vs on-pump coronary artery bypass: propensity-matched analysis.
PMC9376244. Similar 30-day mortality; off-pump associated with lower stroke, renal injury and faster recovery in experienced hands.
A cardiac surgeon and cardiologist read them and write back after the treating team completes its review with whether bypass or a stent suits you better, how many grafts are likely, and an itemised price. No charge, and no obligation to travel.