Bypass Surgery (CABG)

Coronary artery bypass grafting (CABG) — commonly called bypass surgery — is a major but well-established procedure that reroutes blood flow around blocked coronary arteries using a healthy blood vessel taken from elsewhere in the body. For patients with extensive coronary artery disease, it often provides more durable relief than angioplasty alone.

Why bypass instead of a stent

Bypass surgery is generally recommended over angioplasty when blockages are widespread — affecting multiple arteries, or a critical section like the left main artery — where placing several stents would be less effective than surgically rerouting blood flow altogether. It's also considered when a patient has diabetes alongside multi-vessel disease, since research consistently shows better long-term outcomes with bypass in that specific combination.

How the procedure works

Surgeons take a section of healthy blood vessel — commonly from the leg, chest wall, or arm — and graft it to reroute blood around the blocked portion of a coronary artery. Depending on how many arteries are affected, a patient may need a single bypass or multiple grafts in the same operation. The surgery is performed under general anesthesia and typically takes three to six hours.

What recovery actually looks like

Recovery happens in stages, and it's worth understanding this upfront rather than expecting a quick turnaround:

1. Hospital stay: typically five to seven days, including time in intensive care immediately after surgery
2. First few weeks at home: focused on wound healing, short walks, and avoiding lifting or driving
3. Cardiac rehabilitation: a structured, supervised exercise and education program that usually begins a few weeks after discharge and continues for several months
4. Return to normal activity: most patients resume light work within six to eight weeks, with full recovery often taking closer to three months

Managing expectations around risk

As with any major surgery, bypass carries real risks, and a thorough pre-surgical evaluation — including a full assessment of overall heart function, kidney function, and other conditions — helps determine whether you're a strong candidate and what precautions matter most in your specific case. This is exactly the kind of conversation worth having directly with a cardiac surgeon rather than researching alone.

Planning your treatment

If bypass surgery has been recommended for you, our cardiology team can help you understand your angiogram results, get a second opinion if you want one, and connect you with an experienced cardiac surgeon at one of our partner hospitals — along with a clear, upfront cost estimate.