Eur J Endocrinol
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DOI: 10.1530/eje.1.02321
European Journal of Endocrinology, Vol 156, Issue 1, 137-142
Copyright © 2007 by European Society of Endocrinology
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CLINICAL STUDY

Increased preoperative glucose levels are associated with perioperative mortality in patients undergoing noncardiac, nonvascular surgery

Peter G Noordzij, Eric Boersma2, Frodo Schreiner, Miklos D Kertai1, Harm H H Feringa, Martin Dunkelgrun1, Jeroen J Bax3, Jan Klein and Don Poldermans

Departments of Anesthesiology, 1 Vascular Surgery, and 2 Cardiology, Erasmus Medical Center, Dr Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands and 3 Department of Cardiology, University Hospital Leiden, Leiden, The Netherlands

(Correspondence should be addressed to D Poldermans; Email: d.poldermans{at}erasmusmc.nl)

Objective: To determine the relationship between preoperative glucose levels and perioperative mortality in noncardiac, nonvascular surgery.

Research design and methods: We performed a case–control study in a cohort of 108 593 patients who underwent noncardiac surgery at the Erasmus MC during 1991–2001. Cases were 989 patients who underwent elective noncardiac, nonvascular surgery and died within 30 days during hospital stay. From the remaining patients, 1879 matched controls (age, sex, calendar year, and type of surgery) were selected. Information was obtained regarding the presence of cardiac risk factors, medication, and preoperative laboratory results. Preoperative random glucose levels <5.6 mmol/l (110 mg/dl) were normal. Impaired glucose levels in the range of 5.6–11.1 mmol/l were prediabetes. Glucose levels ≥11.1 mmol/l (200 mg/dl) were diabetes.

Results: Preoperative glucose levels were available in 904 cases and 1247 controls. A cardiovascular complication was the primary cause of death in 207 (23%) cases. Prediabetes glucose levels were associated with a 1.7-fold increased mortality risk compared with normoglycemic levels (adjusted odds ratio (OR) 1.7 and 95% confidence interval (CI) 1.4–2.1; P<0.001). Diabetes glucose levels were associated with a 2.1-fold increased risk (adjusted OR 2.1 and 95% CI 1.3–3.5; P<0.001). In cases with cardiovascular death, prediabetes glucose levels had a threefold increased cardiovascular mortality risk (adjusted OR 3.0 and 95% CI 1.7–5.1) and diabetes glucose levels had a fourfold increased cardiovascular mortality risk (OR 4.0 and 95% CI 1.3–12).

Conclusions: Preoperative hyperglycemia is associated with increased (cardiovascular) mortality in patients undergoing noncardiac, nonvascular surgery.




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