Comparison of clinical pharmacy specialists and usual care in outpatient management of hyperglycemia in Veterans Affairs medical centers

Abstract

Purpose: The results of a study to assess the effectiveness and safety of hyperglycemia management provided by clinical pharmacy specialists (CPSs) versus usual care in outpatients with diabetes from 53 Veterans Affairs (VA) medical centers are reported.

Methods: An historical cohort study of outpatients with baseline glycosylated hemoglobin (HbA1c) values of >9% who were referred to a CPS for management of hyperglycemia and primary care patients who were not referred to a CPS was conducted. The primary outcomes were change in HbA1c over time and time to reach an HbA1c value of <8%. Secondary outcomes included the number of visits to achieve an HbA1c value of <8%, proportion of patients with an HbA1c value of <6% who were receiving secretagogues, and proportion of patients with serious hypoglycemia.

Results: After propensity score matching by baseline characteristics, there were 12,327 patients in each group. The mean ± S.D. number of visits to reach an HbA1c value of <8% was 2.46 ± 1.58 in the pharmacist-managed group and 1.82 ± 1.27 with usual care (p < 0.001). The proportion of patients with an HbA1c value of <6% who were receiving secretagogues was 39.9% with pharmacist-managed care and 38.6% with usual care (p = 0.73). Serious hypoglycemia was noted in 4.3% of pharmacist-managed patients and 3.1% of usual care patients (p < 0.001).

Conclusion: Data from 53 VA medical centers revealed that CPSs managed the care of ambulatory care patients with hyperglycemia as well as primary care providers.

Keywords: clinical pharmacist; clinical pharmacy practice; diabetes.