ROSH Gastrointestinal Practice Exam

What is the role of Vitamin B1 in a patient with Wernicke's encephalopathy?

1. Prevents oxidative stress

2. Facilitates carbohydrate metabolism

3. Stimulates red blood cell production

4. Supports nerve function

The correct answer is: Facilitates carbohydrate metabolism

Vitamin B1, also known as thiamine, plays a crucial role in carbohydrate metabolism, which is particularly relevant in the context of Wernicke's encephalopathy. This neurological condition is often associated with thiamine deficiency, primarily seen in patients with chronic alcohol consumption or malnutrition. Thiamine functions as a coenzyme in the conversion of carbohydrates into energy, helping to facilitate glucose metabolism. In instances where thiamine is deficient, the brain, which relies heavily on glucose for energy, cannot metabolize carbohydrates efficiently. This impaired metabolism results in neuronal damage, which underlies the symptoms of Wernicke's encephalopathy, such as confusion, ophthalmoplegia, and ataxia. Understanding the role of thiamine in carbohydrate metabolism highlights the importance of thiamine supplementation in the treatment and prevention of Wernicke's encephalopathy in at-risk populations. This supportive measure can help restore energy availability in the brain, thereby mitigating the neurological symptoms associated with this condition.