Frequency of thyroid dysfunction in pediatric patients with congenital heart disease exposed to iodinated contrast media – a long-term observational study
-
Rouven Kubicki
,
Jochen Grohmann
Abstract
Background
The thyroid gland of patients with congenital heart disease may be exposed to large doses of iodine from various sources. We assessed the thyroid response after iodine exposure during conventional angiography in cardiac catheterization and angiographic computer tomography in childhood.
Methods
Retrospective mid- to long-term follow-up of 104 individuals (24% neonates, 51% infants, 25% children) with a median age and body weight of 104 days [0–8 years] and 5.3 kg [1.6–20]. Serum levels of thyroid-stimulating hormone, free triiodthyronine and free thyroxine were evaluated at baseline and after excess iodine. We also assessed risk factors that may affect thyroid dysfunction.
Results
Baseline thyroidal levels were within normal range in all patients. The mean cumulative iodinate contrast load was 6.6 ± 1.6 mL/kg. In fact, 75% had experienced more than one event involving iodine exposure, whose median frequency was three times per patient [1–12]. During the median three years follow-up period [0.5–10], the incidence of thyroid dysfunction was 15.4% (n=16). Those patients developed acquired hypothyroidism (transient n=14, long-lasting n=2 [both died]) with 10 of them requiring temporary replacement therapy for transient thyroid dysfunction, while four patients recovered spontaneously. 88 individuals (84.6%) remained euthyroid. Repeated cardiac interventions, use of drugs that interfere with the thyroid and treatment in the intensive care unit at the index date were strong predictors for acquired thyroid dysfunction.
Conclusions
The incidence of acquired hypothyroidism after iodine excess was 15.4%. However, most patients developed only transient hypothyroidism. Systemic iodine exposure seems to be clinically and metabolically well tolerated during long-term follow-up.
Acknowledgments
We are grateful to Carole Cürten for language editing.
Research funding: This research group received no specific grant from funding agencies in the public, commercial, or not-for-profit sectors.
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Competing interests: The authors declare that they have no conflict of interest.
Informed consent: Informed consent was obtained from all individuals included in this study.
Ethical Approval: The research related to human use has been complied with all the relevant national regulations, institutional policies and in accordance the tenets of the Helsinki Declaration, and has been approved by the authors’ institutional ethical committee.
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© 2020 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Review Article
- The influence of growth hormone therapy on the cardiovascular system in Turner syndrome
- Original Articles
- Clinical utility of urinary gonadotrophins in hypergonadotrophic states as Turner syndrome
- Sclerostin and osteoprotegerin: new markers of chronic kidney disease mediated mineral and bone disease in children
- Monthly intravenous alendronate treatment can maintain bone strength in osteogenesis imperfecta patients following cyclical pamidronate treatment
- Mechanisms and early patterns of dyslipidemia in pediatric type 1 and type 2 diabetes
- Frequency of thyroid dysfunction in pediatric patients with congenital heart disease exposed to iodinated contrast media – a long-term observational study
- Effect of growth hormone therapy on thyroid function in isolated growth hormone deficient and short small for gestational age children: a two-year study, including on assessment of the usefulness of the thyrotropin-releasing hormone (TRH) stimulation test
- Clinical relevance of T lymphocyte subsets in pediatric Graves’ disease
- Long-term follow-up of differentiated thyroid carcinoma in children and adolescents
- A quality improvement project for managing hypocalcemia after pediatric total thyroidectomy
- Pubertal development and adult height in patients with congenital hypothyroidism detected by neonatal screening in southern Brazil
- Clinical characteristics, surgical approach, BRAFV600E mutation and sodium iodine symporter expression in pediatric patients with thyroid carcinoma
- BRAFV600E and TERT promoter mutations in paediatric and young adult papillary thyroid cancer and clinicopathological correlation
- Case Reports
- Pseudohypoparathyroidism type 1B (PHP1B), a rare disorder encountered in adolescence
- Impaired glucose homeostasis and a novel HLCS pathogenic variant in holocarboxylase synthetase deficiency: a report of two cases and brief review
- Transcobalamin II deficiency in twins with a novel variant in the TCN2 gene: case report and review of literature
- Aldosterone deficiency with a hormone profile mimicking pseudohypoaldosteronism
- Non-classical lipoid adrenal hyperplasia presenting as hypoglycemic seizures
Artikel in diesem Heft
- Frontmatter
- Review Article
- The influence of growth hormone therapy on the cardiovascular system in Turner syndrome
- Original Articles
- Clinical utility of urinary gonadotrophins in hypergonadotrophic states as Turner syndrome
- Sclerostin and osteoprotegerin: new markers of chronic kidney disease mediated mineral and bone disease in children
- Monthly intravenous alendronate treatment can maintain bone strength in osteogenesis imperfecta patients following cyclical pamidronate treatment
- Mechanisms and early patterns of dyslipidemia in pediatric type 1 and type 2 diabetes
- Frequency of thyroid dysfunction in pediatric patients with congenital heart disease exposed to iodinated contrast media – a long-term observational study
- Effect of growth hormone therapy on thyroid function in isolated growth hormone deficient and short small for gestational age children: a two-year study, including on assessment of the usefulness of the thyrotropin-releasing hormone (TRH) stimulation test
- Clinical relevance of T lymphocyte subsets in pediatric Graves’ disease
- Long-term follow-up of differentiated thyroid carcinoma in children and adolescents
- A quality improvement project for managing hypocalcemia after pediatric total thyroidectomy
- Pubertal development and adult height in patients with congenital hypothyroidism detected by neonatal screening in southern Brazil
- Clinical characteristics, surgical approach, BRAFV600E mutation and sodium iodine symporter expression in pediatric patients with thyroid carcinoma
- BRAFV600E and TERT promoter mutations in paediatric and young adult papillary thyroid cancer and clinicopathological correlation
- Case Reports
- Pseudohypoparathyroidism type 1B (PHP1B), a rare disorder encountered in adolescence
- Impaired glucose homeostasis and a novel HLCS pathogenic variant in holocarboxylase synthetase deficiency: a report of two cases and brief review
- Transcobalamin II deficiency in twins with a novel variant in the TCN2 gene: case report and review of literature
- Aldosterone deficiency with a hormone profile mimicking pseudohypoaldosteronism
- Non-classical lipoid adrenal hyperplasia presenting as hypoglycemic seizures
