Document Detail

New echocardiographic techniques in the evaluation of left ventricular mechanics in subclinical thyroid dysfunction.
MedLine Citation:
PMID:  19594818     Owner:  NLM     Status:  MEDLINE    
The new echocardiographic techniques for the study of physiopathological intramyocardial phenomena include video densitometry (VD), integrated backscatter (IBS), and color Doppler myocardial imaging (CDMI). Being more independent from cardiac load and from rotational and translational heart motion, these new sensible, noninvasive techniques such as CDMI and IBS show a real incremental value in comparison with conventional echocardiography and allow to detect subtle functional and textural abnormalities of intramural myocardium, partially undetectable by conventional two-dimensional Doppler echocardiography. Subclinical thyroid dysfunction (STD), both in its hypo- and hyperthyroidism form, has a relatively high prevalence in general population (9-15% with a lower percentage of adult males), hence it could be very useful to study more deeply heart involvement in these physiopathological conditions and understand the complex relationship between thyroid and heart. The use of these new ultrasonic techniques in subclinical hypothyroidism helps to detect the early simultaneous involvement of both cardiac cycle phases, which causes a decrease of intramyocardial contractility and an impairment of both active and passive phases of diastole. In subclinical hyperthyroidism, these new ultrasonic techniques permitted to discover more complex and different early cardiac abnormalities of both systolic and diastolic phases.
Vitantonio Di Bello; Enrica Talini; Maria Grazia Delle Donne; Fabrizio Aghini-Lombardi; Fabio Monzani; Salvatore La Carrubba; Francesco Antonini-Canterin; Frank Lloyd Dini; Giovanni Di Salvo; Scipione Carerj; Mario Marzilli;
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Echocardiography (Mount Kisco, N.Y.)     Volume:  26     ISSN:  1540-8175     ISO Abbreviation:  Echocardiography     Publication Date:  2009 Jul 
Date Detail:
Created Date:  2009-07-14     Completed Date:  2009-09-30     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8511187     Medline TA:  Echocardiography     Country:  United States    
Other Details:
Languages:  eng     Pagination:  711-9     Citation Subset:  IM    
Cardiac Thoracic and Vascular Department, University of Pisa, Pisa, Italy.
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MeSH Terms
Echocardiography / methods*,  trends*
Thyroid Diseases / complications*,  ultrasonography*
Ventricular Dysfunction, Left / etiology*,  ultrasonography*

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