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January 1, 1970Journal of Bangladesh Society of PhysiologistOpen Access

Heart Rate Variability in Hyperthyroidism

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Why the study?

Does hyperthyroidism alter heart rate variability parameters compared to treated hyperthyroid and euthyroid states?

Population

80 subjects aged 30-50 years, comprising 60 hyperthyroid patients and 20 age and sex-matched healthy…

Comparison

Untreated hyperthyroidism vs Treated hyperthyroidism and healthy euthyroid…

Design

Cross-sectional

Authors

MKMd Rasel KabirNBNoorzahan BegumSFSultana Ferdousi

Discussion

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Overview

Untreated hyperthyroidism is associated with decreased vagal modulation on heart rate, which appears to be restored following adequate antithyroid treatment.

Structured PICO

Does hyperthyroidism alter heart rate variability parameters compared to treated hyperthyroid and euthyroid states?

P
Population
80 subjects aged 30-50 years, comprising 60 hyperthyroid patients (30 untreated newly diagnosed, 30 treated with antithyroid drugs for at least 2 months) and 20 age and sex-matched healthy euthyroid controls.
I
Intervention
Untreated hyperthyroidism
C
Comparator
Treated hyperthyroidism (antithyroid drugs for ≥2 months) and healthy euthyroid controls
O
Outcome
Time domain measures of HRV (mean R-R interval, mean heart rate, SDNN, RMSSD) assessed from 5 minute ECG recordingsurrogate

Untreated hyperthyroidism is associated with decreased vagal modulation on heart rate, which appears to be restored following adequate antithyroid treatment.

Cite This Study

Kabir et al. (1970) studied this question.

synapsesocial.com/papers/6a9925f813e19562d9f0d475https://doi.org/10.3329/jbsp.v4i2.4172
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