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Published on: June 6, 2014
Growth pattern of childhood thyrotoxicosis: longitudinal follow-up to final height
Somchit Jaruratanasirikul1, Hutcha Sriplung
1Department of Pediatrics, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand. somchit.j@psu.ac.th
Insights
Children with thyrotoxicosis experienced normal growth patterns, achieving final heights greater than their genetic potential. This final height increase may be attributed to the secular trend, not the condition itself.
Area of Science:
- Pediatric Endocrinology
- Growth and Development
- Thyroid Disorders
Background:
- Thyrotoxicosis, a condition of excess thyroid hormones, can impact childhood growth.
- Understanding the long-term growth trajectory in children with thyrotoxicosis is crucial for clinical management.
Purpose of the Study:
- To investigate the growth patterns and final height outcomes in children diagnosed with thyrotoxicosis during prepuberty or early puberty.
Main Methods:
- Retrospective analysis of growth data from 40 pediatric patients with thyrotoxicosis.
- Height and weight measurements were recorded every 3-6 months and converted to standard deviation scores (SDS).
Main Results:
- Patients were initially underweight but became relatively overweight after one year of treatment.
- Final height SDS averaged -0.04, comparable to the general population.
- Patients achieved an average final height 2.85 cm greater than their target height (p < 0.01).
Conclusions:
- Childhood thyrotoxicosis does not inherently alter growth patterns compared to the general population.
- The observed increase in final height above genetic potential may be influenced by secular trends rather than thyrotoxicosis itself.
Objective:
To study the growth pattern of children affected with thyrotoxicosis.
Material And Method:
A retrospective study of growth data of 40 patients with thyrotoxicosis diagnosed at prepuberty or at early puberty was conducted. All patients were evaluated for height and weight every 3-6 months. Height and weight were transformed to standard deviation score (SDS) to account for differences of age and sex.
Results:
At the time of diagnosis, the patients were slightly underweight for height (weight SDS -0.27 +/- 1.24, height SDS -0.06 +/- 1.26). After 1 year of treatment, the average weight gain of the patients was 4.9 +/- 3.1 kg, resulting in becoming relatively overweight for height (weight SDS +0. 32 +/- 1.42, height SDS +0.02 +/- 1.32). At the time of reaching their final height, the patients had an appropriate weight for height (weight SDS +0.06 +/- 0.21, height SDS -0.04 +/- 1.01). The average final height SDS of the patients was -0.04 +/- 1.01. This was at the average of the general population, but was +0.57 +/- 0.48 SDS or +2.85 +/- 1.0 cm greater than their target height (p < 0.01).
Conclusion:
Growth of patients with thyrotoxicosis showed the same pattern as in the general population. The final height of thyrotoxicosis patients was averagely +0.57 SDS or +2.85 cm greater than their genetic potential. This could be from the result of secular trend in the general population rather than being the effect of thyrotoxicosis.
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