ISSN: 1308-5727 | E-ISSN: 1308-5735
Volume : 16 Issue : 4 Year : 2024
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Turkish Society for Pediatric Endocrinology and Diabetes
Electrocardiographic Findings in Children Treated with Leuprolide Acetate for Precocious Puberty: Does it Cause Prolonged QT? [J Clin Res Pediatr Endocrinol]
J Clin Res Pediatr Endocrinol. 2024; 16(4): 426-430 | DOI: 10.4274/jcrpe.galenos.2024.2024-2-8

Electrocardiographic Findings in Children Treated with Leuprolide Acetate for Precocious Puberty: Does it Cause Prolonged QT?

Esma Ebru Altun, Ayşe Yaşar, Fatma Dursun, Gülcan Seymen, Heves Kırmızıbekmez
University of Health Sciences Turkey, Ümraniye Training and Research Hospital, Clinic of Pediatric Endocrinology, İstanbul, Turkey

INTRODUCTION: Central precocious puberty (CPP) is treated with long-acting gonadotropin releasing hormone (GnRH) analogues (GnRHa). Some adult patients undergoing GnRHa treatment experienced prolonged QT syndrome, which is associated with an increased risk of serious cardiac events, such as myocardial infarction, stroke, arrhythmias, and sudden cardiac death.
METHODS: Seventy-four patients, aged between 5 and 11 years and diagnosed with CPP but with no other concomitant disease or medication use, underwent electrocardiogram (ECG) assessment. They had been receiving 3.75 mg leuprolide acetate (Lucrin® Depot) injections every 28 days for at least three months.
RESULTS: The ECGs of all patients showed a corrected QT (QTc) interval within normal limits, consistent with the data for healthy Turkish children of the same age and gender. No other pathological physical examination or ECG findings were observed. Furthermore, there was no significant difference in QTc interval when adjusted for age, anthropometric data, or the duration or cumulative dose of the treatment.
DISCUSSION AND CONCLUSION: The study found no correlation between QTc interval values and age, treatment duration, total cumulative dose, and anthropometric data. These findings suggest that cardiovascular adverse events associated with GnRHa treatment may be related to age and other underlying physiopathological conditions in adults rather than being directly due to the drug.

Keywords: Precocious puberty, leuprolide acetate, children, ECG, prolonged QT

Corresponding Author: Heves Kırmızıbekmez, Türkiye
Manuscript Language: English
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Altun, E. E., Yaşar, A., Dursun, F., Seymen, G., & Kırmızıbekmez, H. (2024). Electrocardiographic Findings in Children Treated with Leuprolide Acetate for Precocious Puberty: Does it Cause Prolonged QT?. J Clin Res Pediatr Endocrinol, 16(4), 426-430. https://doi.org/10.4274/jcrpe.galenos.2024.2024-2-8.
Altun EE, Yaşar A, Dursun F, Seymen G, Kırmızıbekmez H. Electrocardiographic Findings in Children Treated with Leuprolide Acetate for Precocious Puberty: Does it Cause Prolonged QT?. J Clin Res Pediatr Endocrinol. 2024 ;16(4):426-430. doi:10.4274/jcrpe.galenos.2024.2024-2-8.
Altun EE, Yaşar A, Dursun F, et al. Electrocardiographic Findings in Children Treated with Leuprolide Acetate for Precocious Puberty: Does it Cause Prolonged QT?. J Clin Res Pediatr Endocrinol. 2024;16(4):426-430. doi:10.4274/jcrpe.galenos.2024.2024-2-8.
Altun, Esma Ebru et al. "Electrocardiographic Findings in Children Treated with Leuprolide Acetate for Precocious Puberty: Does it Cause Prolonged QT?." J Clin Res Pediatr Endocrinol vol. 16,4 (2024): 426-430. doi:10.4274/jcrpe.galenos.2024.2024-2-8.
Altun, Esma Ebru, Ayşe Yaşar, Fatma Dursun, Gülcan Seymen and Heves Kırmızıbekmez "Electrocardiographic Findings in Children Treated with Leuprolide Acetate for Precocious Puberty: Does it Cause Prolonged QT?." J Clin Res Pediatr Endocrinol 16, no. 4 (2024): 426-430. https://doi.org/10.4274/jcrpe.galenos.2024.2024-2-8.
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