Atypical antipsychotic use may result in metabolic abnormalities, such as hyperglycemia, dyslipidemia, weight gain, and metabolic syndrome. These adverse effects (AEs) can cause progression to type 2 diabetes mellitus (T2DM) as well as increased risk of cardiovascular disease and cardiac mortality. Individuals diagnosed with T2DM have medical expenses that are about 2.3 times higher than individuals without diabetes.1,2 The risk of experiencing metabolic abnormalities is likely elevated for patients who were antipsychotic-naïve prior to initiation.3
In response to an increased awareness of atypical antipsychotic-related AEs, the American Diabetes Association (ADA) and American Psychiatric Association (APA) released a consensus statement in 2004 with a metabolic monitoring protocol for patients initiating or changing to a new antipsychotic medication.4 Within the first year after initiation, the ADA/APA consensus statements recommends that clinicians acquire a personal and family history, weight, body mass index (BMI), waist circumference, blood pressure (BP), fasting plasma glucose, and fasting lipid profile at the initial patient visit. Patient weight is recommended to be collected at 4 weeks and again 8 weeks later. Twelve weeks after the initial visit, weight, BMI, BP, fasting plasma glucose and a fasting lipid profile are recommended to be collected and assessed for abnormalities. Weight is then recommended to be assessed every 3 months thereafter. Review of personal and family history, waist circumference, BP, and a fasting plasma glucose is recommended to occur annually. Finally, a fasting lipid profile is to be collected every 5 years.
Since the initial consensus statement release, metabolic monitoring of patients prescribed antipsychotic medications has been found to be inadequate within several large health care organizations.5,6 Mittal and colleagues reviewed metabolic monitoring practices occurring in 32 facilities within the Veterans Health Administration (VHA) and found that monitoring practices in the first 90 days after antipsychotic initiation were largely nonadherent to the ADA/APA consensus statement recommendations.6 Medical staff in Veterans Integrated Service Network 21 (VISN 21) currently serve about 268,000 veterans actively receiving care across California, Nevada, and the Pacific Islands.To support veteran care in the fields of mental health and medication safety, the VISN 21 pharmacy benefits manager office created a clinical dashboard that identifies veterans who are currently prescribed an antipsychotic and have not completed at least 1 annual blood glucose test. While this dashboard is a valuable tool for tracking patient care for those who have been prescribed an antipsychotic > 1 year, it does not consider the ADA/APA recommendations for more frequent monitoring in the first year after initiation. A literature review found no citations of a systematic evaluation of adherence to ADA/APA monitoring recommendations or patient progression to T2DM in the first year after antipsychotic initiation for an antipsychotic-naïve veteran population. The goal of this quality improvement project is to assess VHA health care provider and patient adherence to the 2004 consensus statement recommendations within the first year after initiation for previously antipsychotic-naïve patients receiving an atypical antipsychotic and determine rate of progression to T2DM.