Early Abnormalities of Left Ventricular Myocardial Characteristics Associated with Subclinical Hyperthyroidism

Overview

Journal J Endocrinol Invest

Publisher Springer

Specialty Endocrinology

Date 2007 Sep 13

PMID 17848839

Citations 4

Authors

V Di Bello

F Aghini-Lombardi

F Monzani

E Talini

L Antonangeli

C Palagi

A Di Cori

N Caraccio

M G Delle Donne

A Dardano

A Pinchera

M Mariani

Affiliations

Soon will be listed here.

Abstract

The aim of the present study was to analyze heart function in subclinical hyperthyroidism (sHT) in otherwise healthy subjects by new methods using intramyocardial ultrasonic techniques. Twenty-four newly diagnosed and untreated sHT patients (20 women, 4 men; mean age: 42+/-4 yr) and 24 sex- and age-matched healthy volunteers were studied. All subjects were submitted to conventional 2D color-Doppler echocardiography, pulsed wave tissue Doppler imaging (PWTDI) for the analysis of diastolic function, color Doppler myocardial imaging (CDMI) for the analysis of regional strain and strain rate (SR) expression of regional myocardial deformability, and to integrated backscatter (IBS) for the evaluation of intrinsic contractility and tissue characterization. Regional myocardial systolic strain findings were significantly higher in sHT patients when compared with controls (p<0.001). Considering diastolic SR, the early phase of diastolic SR was compromised in sHT subjects as compared with controls (p<0.001). Cyclic variation index (CVI), expression of intrinsic contractility, was significantly higher in sHT subjects in comparison with controls (p<0.0001). IBS values were comparable between the 2 study groups. In conclusion, the present study suggests that in patients with sHT early systolic hyperdeformability and hypercontractility are present, together with impairment of both active and passive phases of diastole. On the contrary, no left ventricular hypertrophy or other structural alterations are documented.

Citing Articles

Evaluation of diastolic function in newly diagnosed hyperthyroid patients with preserved left ventricular systolic function.

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Speckle tracking echocardiographic assessment of left ventricular longitudinal strain in female patients with subclinical hyperthyroidism.

Abdelrazk R, El-Sehrawy A, Ghoniem M, Amer M Cardiovasc Endocrinol Metab. 2021; 10(3):182-185.

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Intra-left ventricular systolic asynchrony in patients with overt hyperthyroidism.

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Subclinical hyperthyroidism and sport eligibility: an exploratory study on cardiovascular pre-participation screening in subjects treated with levothyroxine for multinodular goiter.

Di Luigi L, Parisi A, Quaranta F, Romanelli F, Tranchita E, Sgro P J Endocrinol Invest. 2009; 32(10):825-31.

PMID: 19609103 DOI: 10.1007/BF03345753.

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