“…Poor preoperative glycaemic control, as measured by elevated HbA1c concentrations, has been associated with poor surgical outcomes for emergency and elective patients in many surgical specialities [6,[13][14][15][16][17]18 & ]. These include increased rates of postoperative complications such as surgical site infection, systemic infections, urinary tract infection and lower respiratory tract infection, acute kidney injury, acute coronary syndrome, pneumonia, admission to intensive care, prolonged length of stay, and death.…”