Cited by 90Heart Rate Variability and Autonomic ControlGenetic and Clinical Aspects of Sex Determination and Chromosomal AbnormalitiesBlood Pressure and Hypertension Studies

Nocturnal hypertension and impaired sympathovagal tone in Turner syndrome

Gravholt, Claus Højbjerg, Hansen, Klavs Würgler, Erlandsen, Mogens, Ebbehøj, Eva, Christiansen, Jens Sandahl·2006·Journal of Hypertension

Abstract

OBJECTIVE: Increased blood pressure (BP), night: day BP ratio, and heart rate is seen in Turner syndrome (TS), and an increased risk of ischaemic heart disease and type 2 diabetes, as well as aortic dilatation and dissection. We hypothesized that altered heart rate variability is present in TS in comparison with controls, and can be influenced by hormonal replacement therapy (HRT). MATERIAL AND METHODS: We examined the impact of HRT on sympathovagal control of heart rate variability. Patients (n = 8, aged 29.5 +/- 5.3 years; no treatment or HRT) and controls (n = 8, aged 28.5 +/- 4.2 years; no treatment) were examined by short-term spectral analysis (supine-standing), bedside neuropathy tests, and 24-h ambulatory BP. N-terminal pro-brain natriuretic peptide (BNP), renin, aldosterone and urinary albumin excretion was determined. The interaction between position and status (TS or control) was examined for data from spectral analysis. RESULTS: Low-frequency (LF) power, coefficient of component variation of LF (both measures of sympathetic and vagal activity), and the LF: high-frequency (HF) power ratio (a measure of sympathovagal balance) were diminished in TS compared with controls, especially during standing. Systolic and diastolic night ambulatory BP (both P = 0.03), and systolic and diastolic night: day ratio (P = 0.01; P = 0.004) was increased in TS. During HRT diastolic day (P = 0.05) and 24-h diastolic ambulatory BP (P = 0.08) decreased. N-terminal pro-BNP was elevated in TS. CONCLUSION: Decreased sympathovagal balance or tone and nocturnal hypertension is present in TS, and N-terminal pro-BNP is elevated. HRT did not modulate the sympathovagal tone, but decreased BP. These changes may be linked to the increased cardiovascular risk and possibly the increased risk of aortic dilatation in TS.

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Crossref · 10.1097/01.hjh.0000200509.17947.0f

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Authors
Gravholt, C. H., Hansen, K. W., Erlandsen, M., Ebbehøj, E., & Christiansen, J. S.
Affiliations
  • Aarhus University Hospital (DK)
  • Regionshospitalet Silkeborg (DK)
  • Aarhus University (DK)
Corresponding author
Gravholt, Claus Højbjerg
Venue
Journal of Hypertension
Published
2006-02
Volume
24
Issue
2
Pages
353-360
ISSN
0263-6352 (ISSN-L)
OpenAlex
W2048818063
Cited by
90
References
50
Citations by year
2026: 1 · 2025: 2 · 2024: 5 · 2022: 4 · 2021: 2 · 2020: 3 · 2019: 3 · 2018: 7 · 2017: 3 · 2016: 3 · 2015: 7 · 2014: 7 · 2013: 7 · 2012: 4
FWCI
6.13
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Hypertension (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Heart Rate Variability and Autonomic Control
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Blood Pressure and Hypertension Studies
Keywords
Turner syndrome, nocturnal hypertension, sympathovagal balance, heart rate variability, hormone replacement therapy, natriuretic peptides, ambulatory blood pressure, autonomic nervous system, aortic dilatation, cardiovascular risk
MeSH terms
Adult, Circadian Rhythm, Female, Heart Rate, Humans, Hypertension, Peptide Fragments, Posture, Sympathetic Nervous System, Turner Syndrome, Vagus Nerve, Cross-Over Studies, Blood Pressure Monitoring, Ambulatory, Natriuretic Peptide, Brain, Hormone Replacement Therapy

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