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January 13, 2018Bioscience ReportsOpen Access

Increased sympathovagal imbalance evaluated by heart rate variability is associated with decreased T2* MRI and left ventricular function in transfusion-dependent thalassemia patients

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Why the study?

Can heart rate variability be used as a screening method for iron overload cardiomyopathy in transfusion-dependent thalassemia patients?

Population

Patients with transfusion-dependent thalassemia (TDT)

Comparison

Heart rate variability evaluated by 24-h Holter… vs Patients without a cardiac iron overload condition

Design

Cross-sectional

Authors

SPSintip PattanakuharAPArintaya PhrommintikulATAdisak Tantiworawit

Discussion

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Overview

HRV LF/HF ratio was associated with CMR-T2* and LVEF; leaves open its utility for screening iron overload cardiomyopathy pending prospective validation.

Structured PICO

Can heart rate variability be used as a screening method for iron overload cardiomyopathy in transfusion-dependent thalassemia patients?

P
Population
Patients with transfusion-dependent thalassemia (TDT)
I
Intervention
Heart rate variability (HRV) evaluated by 24-h Holter monitoring
C
Comparator
Patients without a cardiac iron overload condition
O
Outcome
Correlation of HRV (LF/HF ratio) with CMR-T2* and left ventricular ejection fraction (LVEF)surrogate

Heart rate variability, specifically the LF/HF ratio, correlates with CMR-T2* and LVEF, suggesting it may serve as an accessible early screening tool for cardiac iron overload in transfusion-dependent thalassemia patients.

Limitations

  • Small sample size of TDT patients with cardiac iron overload

Cite This Study

Pattanakuhar et al. (2018) studied this question.

synapsesocial.com/papers/6a821a3fe282fcaf79c69ea6https://doi.org/10.1042/bsr20171266
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Heart Rate Variability as an Alternative Indicator for Identifying Cardiac Iron Status in Non-Transfusion Dependent Thalassemia Patients2015 · 21 citations
  2. 2Heart Rate Variability for Early Detection of Cardiac Iron Deposition in Patients with Transfusion-Dependent Thalassemia2016 · 21 citations
  3. 3Heart Rate Variability for Early Detection of Iron Overload Cardiomyopathy inβ-Thalassemia Patients2015 · 10 citations
  4. 4The Association between Serum Ferritin Level, Tissue Doppler Echocardiography, Cardiac T2* MRI, and Heart Rate Recovery in Patients with Beta Thalassemia Major.2016 · 23 citations
  5. 5Evaluation of the Relationship Between T2*CMR and Cardiac Depolarization and Repolarization Parameters in Beta-Thalassemia Patients2024