Assessment of Diastolic Function in Hypertrophic Cardiomyopathy by Computed Tomography-Derived Analysis of Left Ventricular Filling.
J Comput Assist Tomogr
; 41(3): 339-343, 2017.
Article
em En
| MEDLINE
| ID: mdl-27798446
ABSTRACT
OBJECTIVES:
Hypertrophic cardiomyopathy (HCM) is characterized by diastolic dysfunction, which is difficult to assess by noninvasive methods. We hypothesized that measurement of simultaneous left ventricular (LV) and left atrial (LA) volume changes by cardiac computed tomography would be useful in the assessment of diastolic function in HCM.METHODS:
We studied 21 patients with HCM and 21 age-matched controls. The LA and LV volumes were calculated and early and late diastolic volume changes derived.RESULTS:
The HCM patients had significantly larger LA volumes and reduced LA total emptying fraction (30 ± 7% vs 42 ± 6%; P < 0.0001). Conduit volume was increased (30 ± 6 vs 22 ± 4 mL/m; P < 0.0001) and contributed a significantly higher proportion of total LV diastolic filling, suggesting that passive filling of the LV compensates for LA dysfunction, but at the expense of increased pulmonary filling pressure.CONCLUSIONS:
This study suggests that simultaneous depiction of computed tomography-derived LV and LA volume changes can characterize diastolic dysfunction in HCM.
Texto completo:
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Bases de dados:
MEDLINE
Assunto principal:
Cardiomiopatia Hipertrófica
/
Tomografia Computadorizada por Raios X
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Disfunção Ventricular Esquerda
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Diástole
Tipo de estudo:
Observational_studies
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Risk_factors_studies
Limite:
Adult
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Aged
/
Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
J Comput Assist Tomogr
Ano de publicação:
2017
Tipo de documento:
Article