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Continuous glucose monitoring in patients undergoing cardiac surgery

Boaz Kalmovich1, Yosefa Bar-Dayan, Mona Boaz

  • 1Surgery Department, Wolfson Medical Center, Holon, Israel.

Diabetes Technology & Therapeutics
|January 13, 2012
PubMed

Insights

Continuous glucose monitoring systems (CGMS) aid blood sugar control in cardiac surgery patients. However, CGMS accuracy is limited during surgery and early recovery due to false hypoglycemia readings.

Area of Science:

  • Cardiology
  • Endocrinology
  • Medical Devices

Background:

  • Hyperglycemia is common in patients undergoing major stress, such as cardiac surgery.
  • Effective glucose management is crucial for patient outcomes in this population.

Purpose of the Study:

  • To assess the implementation and effectiveness of a continuous glucose monitoring system (CGMS) for glucose management in patients undergoing cardiac surgery.

Main Methods:

  • Fifty-nine patients undergoing cardiac surgery were monitored using CGMS.
  • Evaluated glucose levels, insulin requirements, and hemodynamic parameters.
  • Patients were categorized into diabetic, non-diabetic with hyperglycemia, and non-hyperglycemic groups.

Main Results:

  • Hyperglycemia was most prevalent in the postoperative period.
  • Hyperglycemic patients required significantly more insulin (81±40 units vs. 34±37 units, P=0.005).
  • CGMS showed unreliable readings, falsely detecting hypoglycemia in about one-third of patients during late operative and early postoperative phases.

Conclusions:

  • CGMS can facilitate close glucose monitoring and control in cardiac surgery patients.
  • The reliability of CGMS is compromised during the surgical phase and early postoperative period due to inaccurate hypoglycemia detection.
Abstract

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