Wernicke encephalopathy in non-alcoholic patients following gastrointestinal procedures: a systematic review
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By
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Hala Abu-Qasem
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Husna Irfan Thalib
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Zainab Shoeb Ghazi
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Reem Tageldin
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Yara Alras
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Hanin Faisal
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Laiba Khan
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Abderrahman Ouban
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Mounzer Yassin-Kassab
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June 30, 2026
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Clinical Scorecard: Wernicke Encephalopathy in Non-Alcoholic Individuals After Gastrointestinal Surgeries: A Comprehensive Review
At a Glance
| Category | Detail |
|---|
| Condition | Wernicke Encephalopathy |
| Key Mechanisms | Thiamine deficiency due to malabsorption, dietary restriction, and increased metabolic demand post-surgery. |
| Target Population | Non-alcoholic adults following gastrointestinal procedures. |
| Care Setting | Postoperative care in gastrointestinal surgery patients. |
Key Highlights
- WE can occur in non-alcoholic individuals, particularly after GI surgeries.
- Classical triad of symptoms is present in only about 10% of cases.
- Early intravenous thiamine treatment is associated with better outcomes.
- Vomiting is the most common precipitating factor for WE.
- MRI findings are critical for diagnosis, especially in atypical cases.
Guideline-Based Recommendations
Diagnosis
- Diagnosis is primarily clinical, supported by MRI and Caine criteria.
Management
- Initiate empirical intravenous thiamine whenever WE is suspected.
Monitoring & Follow-up
- Monitor for symptoms of WE in high-risk postoperative patients.
Risks
- Higher risk of WE in patients with malnutrition, prolonged fasting, or persistent vomiting.
Patient & Prescribing Data
Non-alcoholic adults post gastrointestinal surgery.
Prophylactic thiamine supplementation should be considered in high-risk patients.
Clinical Best Practices
- Use MRI for diagnosis, especially in atypical cases.
- Consider thiamine supplementation in patients with vomiting or malnutrition.
- Recognize that classical symptoms may not be present in non-alcoholic cases.
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