E-ISSN 2231-3206 | ISSN 2320-4672
 

Original Research 


A comparative study of cardiac autonomic function tests in hypothyroid patients and euthyroid subjects

Rajesh Kumar Paul, Subodh Pandey, Sachin Chittawar, Kirtika Shrivastav.

Abstract
Background: Thyroid hormone has very deep effects on the heart and can cause sympathovagal imbalance. Sympathovagal imbalance can lead to cardiac autonomic neuropathy (CAN) in hypothyroid patients.

Aims and objectives: The study aimed to assess the CAN in hypothyroidism and compare CAN in hypothyroid patients and euthyroid subjects.

Materials and Methods: Fifty hypothyroid patients and 50 euthyroid subjects were selected for the study after satisfying the inclusion and exclusion criteria. Autonomic function tests were performed as per Ewing’s and Clarke criterion including three parasympathetic (deep breathing test, 30:15 ratio, and Valsalva ratio [VR]) and two (sustained handgrip and postural hypotension test) sympathetic tests.

Results: On comparing the mean of the test between euthyroid and hypothyroid patient, VR in parasympathetic and both sympathetic tests were statistically significant.

Conclusion: There is an increased prevalence of CAN in hypothyroidism in comparison to the controls.

Key words: Cardiac Autonomic Neuropathy; Deep Breathing Test; Valsalva Ratio; Sustained Handgrip; Postural Hypotension Test


 
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How to Cite this Article
Pubmed Style

Paul RK, Pandey S, Chittawar S, Shrivastav K. A comparative study of cardiac autonomic function tests in hypothyroid patients and euthyroid subjects. doi:10.5455/njppp.2021.10.08223202026082020


Web Style

Paul RK, Pandey S, Chittawar S, Shrivastav K. A comparative study of cardiac autonomic function tests in hypothyroid patients and euthyroid subjects. http://www.njppp.com/?mno=125891 [Access: December 03, 2020]. doi:10.5455/njppp.2021.10.08223202026082020


AMA (American Medical Association) Style

Paul RK, Pandey S, Chittawar S, Shrivastav K. A comparative study of cardiac autonomic function tests in hypothyroid patients and euthyroid subjects. doi:10.5455/njppp.2021.10.08223202026082020



Vancouver/ICMJE Style

Paul RK, Pandey S, Chittawar S, Shrivastav K. A comparative study of cardiac autonomic function tests in hypothyroid patients and euthyroid subjects. doi:10.5455/njppp.2021.10.08223202026082020



Harvard Style

Paul, R. K., Pandey, . S., Chittawar, . S. & Shrivastav, . K. (2021) A comparative study of cardiac autonomic function tests in hypothyroid patients and euthyroid subjects. doi:10.5455/njppp.2021.10.08223202026082020



Turabian Style

Paul, Rajesh Kumar, Subodh Pandey, Sachin Chittawar, and Kirtika Shrivastav. 2021. A comparative study of cardiac autonomic function tests in hypothyroid patients and euthyroid subjects. doi:10.5455/njppp.2021.10.08223202026082020



Chicago Style

Paul, Rajesh Kumar, Subodh Pandey, Sachin Chittawar, and Kirtika Shrivastav. "A comparative study of cardiac autonomic function tests in hypothyroid patients and euthyroid subjects." doi:10.5455/njppp.2021.10.08223202026082020



MLA (The Modern Language Association) Style

Paul, Rajesh Kumar, Subodh Pandey, Sachin Chittawar, and Kirtika Shrivastav. "A comparative study of cardiac autonomic function tests in hypothyroid patients and euthyroid subjects." doi:10.5455/njppp.2021.10.08223202026082020



APA (American Psychological Association) Style

Paul, R. K., Pandey, . S., Chittawar, . S. & Shrivastav, . K. (2021) A comparative study of cardiac autonomic function tests in hypothyroid patients and euthyroid subjects. doi:10.5455/njppp.2021.10.08223202026082020