ArticleIndian journal of endocrinology and metabolism
Cardiac autonomic function and vascular profile in subclinical hypothyroidism: Increased beat-to-beat QT variability.
Article in Indian journal of endocrinology and metabolism. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.
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Who cites it
5 citing papers in PubMed, 1 synthesis or guideline pooled it, 10 citations in OpenAlex.
- Non-invasive markers of cardiovascular risk in patients with subclinical hypothyroidism: A systematic review and meta-analysis of 27 case control studies.Scientific reports · 2018Pooled it
- Beat-to-beat cardiac repolarization lability increases during hypoxemia and arousals in obstructive sleep apnea patients.American journal of physiology. Heart and circulatory physiology · 2024Article
- Acute Effects of a Single-Session of Full-Body Foam Rolling on Heart Rate Variability.International journal of therapeutic massage & bodywork · 2022Article
- Neuropsychological Impairments in Young Patients With Subclinical Hypothyroidism: A Case Control Study.Annals of neurosciences · 2020Article
- Effect of levothyroxine on cardiac function in children with subclinical hypothyroidism: A quasi-experimental study.Caspian journal of internal medicine · 2019Article
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundPatients with subclinical hypothyroidism (SH) may have higher incidence of coronary heart disease and autonomic dysfunction. DESIGN OF THE STUDY: Prospective case control study. AIM AND
objectivesTo evaluate beat-to-beat QT variability and vascular stiffness in patients with SH compared to normal controls. MATERIALS AND
methodsWe compared linear and nonlinear measures of cardiac repolarization liability using beat-to-beat QT intervals derived from the surface electrocardiogram during supine posture and vascular indices including pulse wave velocity and ankle-brachial index (ABI) during supine posture between female patients with SH and age- and sex-matched normal controls. Spectral analysis was done at very low frequency (LF) (0.003-0.04 Hz), Low frequency (LF) (0.04-0.15 Hz), and high frequency (HF) (0.15-0.4 Hz). The HF represents vagal regulation (parasympathetic) and LF represents both parasympathetic and sympathetic regulation.
resultsWe recruited 58 women with a mean age of 31.83 ± 8.9 years and 49 controls with mean age of 32.4 ± 9.9 years (
conclusionsThe cases had lower parasympathetic activity as compared to controls, and there was a predominance of sympathetic activity in cases. QTvi may be an important noninvasive tool in this group of patients to study the risk of cardiovascular mortality.
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