Cited by 13Cardiac electrophysiology and arrhythmiasGenetic and Clinical Aspects of Sex Determination and Chromosomal AbnormalitiesSexual Differentiation and Disorders

No QTc prolongation in girls and women with Turner syndrome

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Noordman, Iris D, Duijnhouwer, Anthonie L, Coert, Misty, Bos, Melanie, Kempers, Marlies, Timmers, Henri J L M, Fejzic, Zina, van der Velden, Janiëlle A E M +1 more·2020·The Journal of Clinical Endocrinology & Metabolism

Abstract

CONTEXT: Turner syndrome (TS) is a genetic condition that is reported to be associated with a prolonged rate-corrected QT (QTc) interval. OBJECTIVES: To evaluate the prevalence of QTc prolongation in patients with TS, to compare their QTc intervals with healthy controls, and to investigate whether QTc prolongation is associated with a monosomy 45,X karyotype. METHOD: Girls (n = 101) and women (n = 251) with TS visiting our center from 2004-2018 were included in this cross-sectional study. QT intervals of 12-leaded electrocardiograms were measured manually, using Bazett's and Hodges formulas to correct for heart rate. A QTc interval of >450 ms for girls and >460 ms for women was considered prolonged. Corrected QT (QTc) intervals of patients with TS were compared to the QTc intervals of healthy girls and women from the same age groups derived from the literature. RESULTS: In total, 5% of the population with TS had a prolonged QTc interval using Bazett's formula and 0% using Hodges formula. Mean QTc intervals of these patients were not prolonged compared with the QTc interval of healthy individuals from the literature. Girls showed shorter mean QTc intervals compared with women. We found no association between monosomy 45,X and prolongation of the QTc interval. CONCLUSIONS: This study shows that the QTc interval in girls and women with TS is not prolonged compared with the general population derived from the literature, using both Bazett's and Hodges formulas. Furthermore, girls show shorter QTc intervals compared with women, and a monosomy 45,X karyotype is not associated with QTc prolongation.

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  1. [13]Bazett HC. An analysis of the time-relations of electrocardiograms. Heart 1920; 7: 353– 370.

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Authors
Noordman, I. D., Duijnhouwer, A. L., Coert, M., Bos, M., Kempers, M., Timmers, H. J. L. M., Fejzic, Z., van der Velden, J. A. E. M., & Kapusta, L.
Affiliations
  • Radboud University Medical Center (NL)
  • Leiden University Medical Center (NL)
  • Department of Pediatric Endocrinology, Amalia Children’s Hospital, Radboud University Medical Center, Nijmegen, The Netherlands
  • Tel Aviv University (IL)
Corresponding author
Noordman, Iris D
Venue
The Journal of Clinical Endocrinology & Metabolism
Published
2020-08-24
Volume
105
Issue
11
Pages
e4148-e4156
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
OpenAlex
W3080704704
Cited by
13
References
35
Citations by year
2026: 1 · 2025: 4 · 2024: 1 · 2023: 2 · 2022: 2 · 2021: 2 · 2020: 1
FWCI
1.08
Type
journal article
Language
en
Open access
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Radboud Repository (Radboud University) (submittedVersion)
  • Radboud Repository (Radboud University) (submittedVersion, other-oa)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac electrophysiology and arrhythmias
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Sexual Differentiation and Disorders
Keywords
Turner syndrome, QTc prolongation, sex differences, Bazett formula, Hodges formula, electrocardiogram, cardiac repolarization
MeSH terms
Adolescent, Adult, Aged, Child, Child, Preschool, Cross-Sectional Studies, Electrocardiography, Female, Heart Rate, Humans, Infant, Long QT Syndrome, Middle Aged, Turner Syndrome, Comorbidity, Prevalence, Young Adult

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