Diagnosis and Treatment > Intervention > Counselling
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Search for other papers by Marcela Rodríguez Flores in
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Search for other papers by Ruth Carmina Cruz Soto in
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Search for other papers by Verónica Vázquez Velázquez in
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Search for other papers by Reina Ruth Soriano Cortés in
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Endocrinology and Metabolism Department, Instituto Tecnológico de Estudios Superiores de Monterrey Tec Salud, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
Search for other papers by Carlos Aguilar Salinas in
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Search for other papers by Eduardo García García in
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Summary
In patients with gastric bypass (GB), high glucose variability (GV) and hypoglycemia have been demonstrated, which could impact the metabolic status and eating behavior. We describe the glucose patterns determined through continuous glucose monitoring (CGM) in two patients with >5 years follow-up after GB and significant weight recovery, who reported hypoglycemic symptoms that interfered with daily activities, and their response to a nutritional and psycho-educative prescription. Case 1: A 40-year-old woman without pre-surgical type 2 diabetes (T2DM) and normal HbA1c, in whom CGM showed high GV and hypoglycemic episodes that did not correlate with the time of hypoglycemic symptoms. Her GV reduced after prescription of a diet with low glycemic index and modification of meal patterns. Case 2: A 48-year-old male with pre-surgical diagnosis of T2DM and current normal HbA1c, reported skipping meals. The CGM showed high GV, 15% of time in hypoglycemia and hyperglycemic spikes. After prescription of a low glycemic index diet, his GV increased and time in hypoglycemia decreased. Through the detailed self-monitoring needed for CGM, we discovered severe anxiety symptoms, consumption of simple carbohydrates and lack of meal structure. He was referred for more intensive psychological counseling. In conclusion, CGM can detect disorders in glucose homeostasis derived both from the mechanisms of bariatric surgery, as well as the patient’s behaviors and mental health, improving decision-making during follow-up.
Learning points:
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High glycemic variability is frequent in patients operated with gastric bypass.
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Diverse eating patterns, such as prolonged fasting and simple carbohydrate ingestion, and mental health disorders, including anxiety, can promote and be confused with worsened hypoglycemia.
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CGM requires a detailed record of food ingested that can be accompanied by associated factors (circumstances, eating patterns, emotional symptoms). This allows the detection of particular behaviors and amount of dietary simple carbohydrates to guide recommendations provided within clinical care of these patients.
Search for other papers by Yang Timothy Du in
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Search for other papers by Angus Rutter in
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Search for other papers by Jui T Ho in
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Summary
A 40-year-old man with achondroplasia presented with symptoms of hypogonadism, low libido and gynaecomastia. He was found to have hypergonadotropic hypogonadism, and karyotype and fluorescent in situ hybridisation analysis showed SRY-positive 46, XX disorder of sex development (DSD). He was tested to have the common activating mutation of the FGFR3 gene implicated in achondroplasia, indicating that he had the two rare conditions independently, with an extremely low incidence of 1 in 400 million. This, to the best of our knowledge, is the first report of an individual having these two rare conditions concurrently. This case highlights that individuals with achondroplasia should have normal sexual development, and in those presenting with incomplete sexual maturation or symptoms of hypogonadism should prompt further evaluation. We also propose a plausible link between achondroplasia and 46, XX DSD through the intricate interactions between the SRY, SOX9 and FGFR9 gene pathways.
Learning points:
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The SOX9 and FGF9 genes, which are upregulated by the SRY gene, are important in both sex determination in the embryo, as well as endochondral bone growth.
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Patients with achondroplasia should have normal sexual development and function in the absence of other confounding factors.
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Patients with achondroplasia who present with symptoms and signs of abnormal sexual development and/or hypogonadism should be appropriately investigated for other causes.
Search for other papers by Adam R Puchalski in
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Search for other papers by Inder J Chopra in
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Summary
Radioiodine (131I) is a critical component in the treatment of differentiated thyroid cancer. We recently saw a patient with thyroid cancer who was hesitant to take 131I treatment because he had previously encountered an allergic reaction to administration of iodine-containing radiocontrast agent for computed tomography (CT) scanning. We were able to administer 131I treatment after discussion that his anaphylactic reaction was not due to iodine and that radioiodine (131I) treatment is unlikely to cause a reaction in the patient.
Learning points
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An allergy to iodine itself does not exist.
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When patients claim that they have an ‘iodine allergy’, ask them what substances they are allergic to and what kind of reaction occurred during use of such substances.
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Radioactive iodine is not a contraindication for patients who claim an ‘allergy to iodine’.
