Continuous Subcutaneous Insulin Infusion Therapy Resulting in Improved Glycemic Control in Patient With Low Health Literacy

Introduction: According to White et al., health literacy is defined as ‘the degree to which individuals can obtain, process, understand, and communicate about health-related information needed to make informed health decisions. Nearly 36 percent of adults in the United State have low health literacy. Low health literacy not only affects the individual and the communities but also puts a lot of burden on healthcare resulting in high healthcare costs. It has adversely influenced diabetes care due to lack of use of preventive services, poor physician-patient communication, poor comprehension of medical instructions, and errors in medication dosing, and timing. Continuous subcutaneous insulin infusion (CSII), also known as insulin pump therapy, and continuous glucose monitors (CGM) are commonly indicated in patients with inadequate glycemic control, high glucose variability, unpredictable hypoglycemia, patients with an erratic schedule or varied work shifts. We present a case of uncontrolled diabetes mellitus in a patient with low health literacy, with significant improvement in glycemic control after starting CSII with CGM. Case: A 59-year-old female with a 13-year history of Latent Autoimmune Diabetes in Adults, on Insulin and Semaglutide, presented for evaluation in the clinic. She was struggling with insulin dosing and blood glucose control with multiple hospital admissions for hypo- and hyperglycemia. Her home blood glucose levels ranged from 92 to 536 mg/dl. Her HbA1C was between 12 and 18% in the past years. She had developed microvascular complications like diabetic nephropathy, neuropathy, and had a cerebrovascular accident in the past. Her current insulin dose was Glargine 50 units daily at nighttime and Lispro 25 units with each meal. Her most recent HbA1c was 14.5. She was not compliant with diet and has difficulty exercising due to residual weakness from CVA. The patient was struggling with insulin injection with errors in the dosing and timing of insulin due to difficulty in understanding medical instructions. Considering all the struggles and uncontrolled diabetes, CSII with CGM was initiated, with a simple protocol for her, one-click, or two clicks depending on the meal size. Within two months there was a significant improvement in her glycemic control. Her recent HbA1C was 9.5%. Conclusion: CSII can be considered as a viable treatment option in patients with low health literacy with uncontrolled diabetes mellitus like in our patient.