Abstract
Objectives
Introduction: Biliopancreatic diversion (BPD) is a surgical procedure that causes weight loss via volume restriction and malabsorption. It is now rarely performed due to the risk of severe nutritional deficiencies including Vitamin A (1).
Methods
Case Description: A 68-year-old female status-post BPD in 1987 was referred for vitamin A deficiency. She initially had diminished night vision that progressed to left eye blindness by the time of her diagnosis in 2013. She was treated with oral vitamin A 100,000 IU daily; however, levels did not normalize, and her retinopathy progressed. She was later treated with intramuscular vitamin A and developed injection site rashes (Figure 1) thought to be due to an injection site reaction versus type IV hypersensitivity. Over time her vitamin A levels improved but her vision did not.
Results
Vitamin A deficiency is a preventable complication of BPD and can lead to permanent vision loss. A study of 376 BPD patients found that 1 year after surgery vitamin A levels were low in 52% and 4 years this increased to 69% despite supplementation compliance (2). Vitamin A injection site rashes have been reported in one case series of 3 patients (3), and skin testing revealed sensitivity to polysorbate 80. This is an emulsifier found in injectable vitamin A palmitate, other parental medications and some vaccines (3).
Conclusions
Vitamin screening is important in post-bariatric surgery patients. Rash following intramuscular vitamin A is uncommon and should be closely monitored for progressive allergic reaction and potential for reactions to other medications that contain similar components.
Funding Sources
None.
Supporting Tables, Images and/or Graphs