Recovery guide Procedures explained
Understanding coronary artery bypass grafting (CABG)
Bypass surgery does something simple in principle: it routes blood around a blocked artery rather than through it. Understanding that makes the recovery instructions make sense.
Posthorax Australia · Reviewed 30 July 2026 · About a 4 minute read
What the operation does
Coronary arteries supply the heart muscle itself. When one narrows enough to limit that supply — causing angina, or risking a heart attack — a bypass creates a new route around the narrowing.
The graft is a length of healthy blood vessel, usually taken from inside the chest wall, from a leg vein, or sometimes from the forearm. Several may be used in one operation, which is where terms like “triple bypass” come from: the number refers to grafted vessels, not to severity in any simple sense.
How it is performed
Most bypass surgery is done through a median sternotomy, often with the heart temporarily stopped and a heart-lung machine taking over circulation, though off-pump and minimally invasive techniques are used in selected cases.
Because the breastbone is divided and wired closed, recovery is governed by bone: six to eight weeks, with lifting limits and chest support during that window.
What recovery involves
The chest is not the only wound. If a leg or arm vein was used, that site needs care too and can swell or ache for weeks — elevate it when sitting and mention any increasing redness or swelling.
Otherwise the pattern is the standard sternotomy recovery: walk little and often, do the breathing exercises, take pain relief on schedule, brace the chest when coughing, and get into cardiac rehabilitation. See the recovery guide for the full picture.
What happens afterwards matters most
A bypass treats a blockage; it does not treat the process that caused it. Medications, blood pressure and cholesterol control, activity, diet and smoking cessation are what protect the grafts.
This is the part cardiac rehabilitation is really for, and why the education sessions are worth attending even when you feel physically fine.
Questions patients ask
+What is coronary artery bypass grafting?
An operation that uses a healthy blood vessel from elsewhere in the body to carry blood around a narrowed or blocked coronary artery, restoring supply to the heart muscle.
+Where do the bypass grafts come from?
Usually an artery from inside the chest wall, a vein from the leg, or sometimes a vessel from the forearm. Several grafts may be used in one operation.
+How long is recovery after bypass surgery?
Because it is usually performed through the breastbone, the sternum takes six to eight weeks to heal and restrictions apply during that time. Energy and stamina commonly take three to six months.
Who writes this, and what it is not
Written by Posthorax Australia, the Australian distributor of the POSTHORAX® range, for patients and families after cardiac surgery. General recovery guidance reflects standard postoperative practice; claims about the device come from the trials cited on our clinical evidence page.
We are not your treating team and this is not medical advice. Where anything here conflicts with your surgeon, GP, physiotherapist or cardiac rehabilitation service, follow them.
Reviewed 30 July 2026 · Corrections: sales@posthorax.com.au