Blood Pressure Is Associated with Receiving Intravitreal Anti-Vascular Endothelial Growth Factor Treatment in Patients with Diabetes.

Ophthalmol Retina

Department of Ophthalmology, Kellogg Eye Center, and Michigan Medicine, Ann Arbor, Michigan; Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan; Department of Metabolism, Endocrinology, and Diabetes, Michigan Medicine, Ann Arbor, Michigan.

Published: May 2019

Purpose: Intravitreal anti-vascular endothelial growth factor (VEGF) injections are used commonly in the treatment of diabetic retinopathy (DR), but the need for treatment and frequency of administration vary considerably among patients. There is no way to predict which patients will require treatment and how frequently injections will be needed. This study aimed to identify factors associated with receiving anti-VEGF injections and the number of treatments received in an 18-month period in patients with diabetes.

Design: Retrospective cohort study.

Participants: Two thousand nine hundred sixteen patients with diabetes treated at the Kellogg Eye Center Retina Clinic from June 1, 2016, through December 31, 2017.

Methods: Retrospective analysis was performed with institutional review board approval using data collected from diabetic patients treated at the retina clinic at the Kellogg Eye Center. Logistic regression was used to identify demographic and medical factors associated with receiving at least 1 injection. Negative binomial regression was used to model the number of anti-VEGF injections.

Main Outcome Measures: Receiving at least 1 anti-VEGF injection and the number of anti-VEGF injections received during the study period.

Results: Systolic blood pressure and a diagnosis of DR were associated significantly with receiving an injection. A history of kidney disease was associated positively with the number of injections received. Type 1 diabetes was associated negatively with receiving an injection and the number of injections. Current hemoglobin A1c level was not associated with either receiving an injection or the number of injections.

Conclusions: Elevated blood pressure is associated significantly with the need for treatment with anti-VEGF injections in patients with diabetes, and a diagnosis of type 1 diabetes is associated negatively with both receiving treatment and the number of injections. Of note, current glycemic control is not associated significantly with either outcome measure. To our knowledge, these associations have not been previously reported, and imply that factors that confer risk for DR development may not be the same that confer risk for treatment.

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http://dx.doi.org/10.1016/j.oret.2019.01.019DOI Listing

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