Glycemic instability of non-diabetic patients after spine surgery: a prospective cohort study.

Abstract

Blood glucose (BG) dysregulation is a well-known condition for patients sustaining medical adverse events, such as sepsis or myocardial infarction. However, it has never been described following spine surgery. Our purpose was to assess postoperative glycemic dysregulation of non-diabetic patients undergoing spine surgery and determine if this is related to any complications within a 3-month postoperative period. All the non-diabetic patients undergoing spine surgery in our center were prospectively included over a 6-month period. BG capillary measures were collected from the preoperative fasting period to the end of postoperative Day 3, six times a day. Patients were followed for 3 months after surgery. Data collected from 75 patients were eventually analyzed. A significant increase of BG level was observed from the preoperative to the second postoperative hour (P < 0.0001), remaining significantly elevated until Day 3 (P < 0.0001). Significant correlations were found between perioperative factors (age, smoking, revision status, instrumentation, operation time, blood loss and transfusion) and glycemic parameters. Day 2 mean BG level was found significantly higher for patients surgically revised than those not revised (P = 0.04). Non-diabetic patients experience a statistically significant increase in BG levels in the first 3 days following a spine surgery. This increase in BG might be correlated with postsurgical complications.