In the August 2007 edition of The Lancet, Argentinian researcher Dr. Diego Lowenstein reported that the higher your A1c, the higher your risk of major complications after heart bypass surgery.
Examination of 56 diabetic patients revealed that for every percentage point increase in A1c, there was a 1.7-fold increase in risk of major post-surgery complications such as stroke or death. Given his findings, Dr. Lowenstein advises that any patient whose A1c is over 7% should delay bypass surgery until the A1c is brought down below 7%.
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Source: Reuters Health