How does blood sugar control after CABG surgery affect long-term survival?

A study assessed the long-term survival and health-related quality of life of people based on their glucose control following first-time isolated coronary artery bypass grafting (CABG) surgery.

Researchers found that survival after heart bypass surgery was not affected by the level of blood sugar control in the hospital while recovering from surgery, as long as blood sugar was kept below 180 milligrams per deciliter (mg/dL). The study also found that health-related quality of life significantly improved in all people from baseline to six months, whether or not they had strict blood sugar control.

These results may encourage more hospitals to consider a less strict control of blood sugar in all people after heart bypass surgery, which could reduce the chances for hypoglycemic (low blood sugar) events in hospital, as well as secondary complications from drops in blood sugar. 

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