Background: Diagnostics of thyroid disorders (TD) are frequently based on the measurements of thyroid stimulating hormone (TSH) concentration only. If TSH is outside the reference range, the diagnostic procedure used in patients with TD isintroduced. Observations indicate that in a considerable number of these patients, TD is not confirmed. The aim of the study was to assess the incidence of transient hyperthyrotropinemia in healthy children during acute infections of the respiratory system.
Patients And Methods: The study included consecutive children (49 boys and 45 girls), aged 2.2-17.3 years, who visited one General Practitioner (GP) due to respiratory tract infections. The tests: complete blood count (CBC), C-reactive protein (CRP), TSH and FT4 were run on the next day after the visit at the physician's (initial visit) and ≥2 weeks after recovery.
Results: Among these children, elevated TSH values were found in about 10% of patients, and they went back to normal values after recovery. A prospective analysis showed a reduction of TSH values in approx. 65% of all groups and TSH at the follow-up visit was significantly lower.
Conclusions: Transient hyperthyrotropinemia was observed in about 10% of children with acute respiratory tract infection. This preliminary finding remains unexplained.
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http://dx.doi.org/10.3390/ijerph18084115 | DOI Listing |
J ASEAN Fed Endocr Soc
December 2024
Department of Pediatrics, Maulana Azad Medical College and Lok Nayak Hospital, New Delhi, India.
Objective: This study aims to determine the effect of iodine excess in pregnant mothers on thyroid function, growth and neurodevelopment in the neonates when assessed at 12 weeks of age.
Methodology: This prospective study enrolled term neonates with birth weight >2500 gm of mothers having urine iodine concentration (UIC) ≥500 µg/L documented in the third trimester of the peripartum period. Neonatal TSH was collected by heel prick on dried blood spots within 24-72 hours of age and measured by time-resolved fluroimmunoassay.
J Pediatr Endocrinol Metab
November 2024
Department of Pediatric Endocrinology, Chair of Pediatrics, Medical School of Firat University, Elazig, Türkiye.
Objectives: It was aimed to investigate the outcomes of babies referred to a tertiary health center in Turkey for evaluation primary congenital hypothyroidism (CH) through newborn screening.
Methods: The hospital files of 328 newborns who were referred for CH from newborn screening between June 2013 and June 2020 were retrospectively reviewed. The newborns were evaluated with their clinical characteristics at admission, as well as their follow-up data and final diagnoses.
J Clin Res Pediatr Endocrinol
October 2024
University of Health Sciences, Izmir Faculty of Medicine, Department of Pediatric Endocrinology, İzmir, Türkiye.
Lowering of thyroid-stimulating hormone (TSH) cutoffs in newborn screening programs has created a management dilemma by leading to more frequent detection of neonates with elevated TSH concentrations due to false-positive results, transient neonatal hyperthyrotropinemia (NHT), and milder forms of congenital hypothyroidism. Current consensus guidelines recommend starting treatment if the venous TSH level is >20 mU/l in the face of a normal free thyroxin (FT4) level, which is an arbitrary threshold for treatment decisions. In countries such as Türkiye, where transient NHT may be more common due to iodine deficiency and/or overload, putting this recommendation into daily practice may lead to unnecessary and over treatments, long-term follow-ups, and increased workload and costs.
View Article and Find Full Text PDFJ Pediatr Endocrinol Metab
June 2024
Division of Neonatology, Health Science University, Ankara Bilkent City Hospital, Ankara, Türkiye.
Objectives: Transient hyperthyrotropinemia/transient hypothyroxinaemia and congenital hypothyroidism (CH) have completely different treatment and clinical outcomes. However, a powerful, highly sensitive and cost-effective marker for the differentiation of these clinical entities in the early postnatal period is not available. Therefore, we aimed to test the potential, early predictive, diagnostic power of the thyroid-stimulating hormone (TSH)/free thyroxine (fT4) ratio for differentiation of the two clinical entities in the early period of life.
View Article and Find Full Text PDFEur Thyroid J
June 2023
Department of Pediatric Endocrinology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey.
Objective: Guidelines on congenital hypothyroidism (CH) recommend that genetic testing should aim to improve diagnosis, treatment or prognosis, but it is unclear which patients would benefit most from the genetic investigation. We aimed to investigate the genetic etiology of transient CH (TCH) and permanent CH (PCH) in a well-characterized cohort, and thereby evaluate the impact of genetic testing on the management and prognosis of children with CH.
Methods: A total of 48 CH patients with normal, goitrous (n 5) or hypoplastic thyroid (n 5) were studied by high-throughput sequencing using a custom-designed 23-gene panel.
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