A hospital-wide blind control program for bedside glucose meters.

Area of Science:

• Clinical Chemistry
• Nursing Quality Improvement
• Point-of-Care Testing

Background:

• Proficiency testing is crucial for maintaining accuracy in medical diagnostics.
• Nursing personnel frequently operate point-of-care glucose monitoring instruments.
• Standardized quality control is essential for reliable patient glucose level measurements.

Purpose of the Study:

• To implement and evaluate a hospital-wide proficiency testing program for nursing staff operating glucose meters.
• To assess the impact of testing frequency on glucose monitoring accuracy.
• To establish uniform quality control procedures for non-laboratory personnel.

Main Methods:

• Distribution of whole blood samples with known glucose levels biweekly to all nursing units.
• Comparison of nurse-obtained glucose meter measurements against true glucose levels.
• Identification of performance discrepancies and implementation of corrective actions.

Main Results:

• Daily glucose meter users exhibited a mean absolute variation of 12.7% from true glucose levels.
• Intermittent users showed a higher mean absolute variation of 15.3%.
• 36.9% of all paired determinations differed from true glucose by over 15%.

Conclusions:

• The proficiency testing program successfully established uniform quality control for glucose monitoring by nursing personnel.
• Daily use of glucose meters correlated with improved measurement accuracy compared to intermittent use.
• The initiative enhanced the reliability of point-of-care glucose testing in a hospital setting.