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Major imbalance of thyroid function after laparoscopic sleeve gastrectomy
Laurent Brutus1,2, Armelle Poupard1,2, Clément Le Glatin1,2
1Pôle de Santé du Marais, Sallertaine, France.
BMJ Case Reports
|August 12, 2019
Summary
Laparoscopic sleeve gastrectomy can disrupt thyroid balance in patients with hypothyroidism. Careful management, including medication form and understanding feedback mechanisms, is crucial for stabilizing thyroid stimulating hormone (TSH) levels post-surgery.
Area of Science:
- Endocrinology
- Bariatric Surgery
- Pharmacology
Background:
- Hypothyroidism requires lifelong hormone replacement therapy.
- Laparoscopic sleeve gastrectomy (LSG) is a common bariatric procedure impacting physiological processes.
- LSG may affect thyroid hormone balance through weight changes and altered drug absorption.
Observation:
- A 58-year-old female with hypothyroidism experienced significant thyroid imbalance post-LSG.
- Thyroid stimulating hormone (TSH) levels fluctuated dramatically.
- Switching from oral tablets to liquid thyroid hormone medication did not resolve the TSH imbalance.
Findings:
- Post-LSG thyroid dysfunction is multifactorial, involving weight fluctuations and drug bioavailability.
- Altered gastrointestinal absorption significantly impacts thyroid hormone replacement efficacy.
- Standard TSH monitoring may require adjusted interpretation in post-LSG patients.
Implications:
- Emphasizes the need for a comprehensive understanding of hypothalamic-pituitary-thyroid axis regulation.
- Highlights the importance of appropriate pharmaceutical formulation (galenic choice) for hormone therapy.
- Underscores the necessity of managing comorbidities and excluding other TSH variation causes in hypothyroid patients after LSG.
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