Clinical and Experimental Pediatrics

The Korean Pediatric Society (대한소아청소년과학회)
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Final height of Korean patients with early treated congenital hypothyroidism

  • Lee, Jiyun (Department of Pediatrics, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine) ;
  • Lee, Jeongho (Department of Pediatrics, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine) ;
  • Lee, Dong Hwan (Department of Pediatrics, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine)
  • Received : 2017.09.19
  • Accepted : 2017.11.03
  • Published : 2018.07.15
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Abstract

Purpose: Congenital hypothyroidism (CH) is the most common endocrine disorder in children. Thyroid hormone deprivation results not only in mental retardation but also growth retardation. This study investigates the final height (FH) in Korean patients with CH detected by newborn screening and examines factors that may affect the FH. Methods: The medical records of Korean CH patients (n=45) were reviewed. The FH was examined and target height (TH) was calculated based on mid-parental height. The FH z score (FHZ) and TH z score (THZ) were computed using the 2007 Korean National Growth Chart. The FHZ and THZ were compared with a Student t test. The impact of the etiology of CH (athyreosis, dyshormonogenesis, ectopic thyoid, hypoplastic thyroid), initial serum thyroid stimulating hormone (TSH) level, initial free thyroxine (T4) level, and time of therapy initiation based on FH was assessed. Results: The mean FHZ was $0.10{\pm}1.01$ for male patients and $-0.11{\pm}1.09$ for female patients. There were no significant differences between FHZ and THZ for both female (P=0.356) and male patients (P=0.237). No significant relationship was found between FH and the etiology of CH, initial TSH level, initial free T4 level, and the time of therapy initiation. Conclusion: Early intervention and satisfactory management do not appear to impede growth in Korean patients with CH. Thus, early detection and proper management of patients with CH detected by newborn screening program are necessary.

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References

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