Influence of Pharmacist Intervention on Re-Elevation of Glycated Hemoglobin for Diabetic Outpatients

Purpose: The effect of pharmacist intervention on blood sugar control in diabetic outpatients in a pharmacist-managed clinic was studied by focusing on the re-elevation of the glycated hemoglobin (A1c) level defined as a continuous variable. Methods: A retrospective chart review was performed at the Mizushima Kyodo Hospital from April 2014 to March 2016. Of the 221 diabetic outpatients who were provided guidance by nurses and nutritional managers, 62 further consulted the pharmacist-managed clinic. The remaining 159 patients were enrolled in a nonintervention group. Finally, the data of 115 patients with A1c level of ≥7.5% and A1c re-elevation were extracted. Intergroup comparison was performed between the pharmacist intervention (n = 26) and nonintervention (n = 89) groups. In both the groups, the starting point (baseline) was the time when the A1c level of ≥7.5% was observed. Subsequent monitoring was performed once in every 3 months. The average cumulative level of A1c re-elevation (CARE) was compared between groups. Patients with A1c level of ≥8.0% and A1c level between 7.5% and 8.0%, and male and female patients were also compared. Furthermore, the number of days until the re-elevation of the A1c level from the baseline was also compared. Results: The CARE values were 0.89 ± 0.86% and 1.51 ± 1.25% in the pharmacist intervention and nonintervention groups, respectively, showing a significant difference (P = .0195). There were no significant differences between patients with A1c level of ≥8.0% and A1c level between 7.5% and 8.0%, or between males and females. The number of days until the re-elevation of A1c level from the baseline also showed no significant difference. Conclusion: Pharmacist intervention for diabetic outpatients in pharmacist-managed clinics significantly suppressed CARE when compared with effects of no intervention, and this could be useful for preventing the exacerbation of diabetes.