SciELO - Scientific Electronic Library Online

 
vol.92 número4Clasificación de Killip-Kimball en octogenarios con síndrome coronario agudo: 11 años de experienciaTAVI en IA pura de válvula nativa: cuando indicaciones fuera de guías cumplen los requerimientos del paciente índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

  • Não possue artigos similaresSimilares em SciELO

Compartilhar


Archivos de cardiología de México

versão On-line ISSN 1665-1731versão impressa ISSN 1405-9940

Resumo

YAROSLAV, Ashikhmin  e  OXANA, Drapkina. Atrial contractile function and fibrosis in patients with paroxysmal atrial fibrillation in sinus rhythm. Arch. Cardiol. Méx. [online]. 2022, vol.92, n.4, pp.431-437.  Epub 09-Dez-2022. ISSN 1665-1731.  https://doi.org/10.24875/acm.21000135.

Objectives:

The aim of the study was to investigate atrial contractile function in patients with paroxysmal atrial fibrillation (AF) in sinus rhythm using transthoracic echocardiography (EchoCG).

Methods and results:

Thirty-five patients with paroxysmal AF and arterial hypertension (mean age 62 ± 10 years, 43% male) in sinus rhythm were enrolled in the study. The control group was composed of comparable patients with arterial hypertension without heart rhythm disturbances. EchoCG was performed during sinus rhythm according to an extended protocol, which included the ejection fraction (EF) of the left atrium (LA) and tissue Doppler measurements. Myocardial fibrosis was assessed quantitatively by videodensitometry in intraventricular and intraatrial (IAS) septa using an original image post-processing algorithm. We found a significant decrease in the left atrial contraction function during sinus rhythm in patients with AF when compared to controls. LA EF (34 ± 14 vs. 54 ± 17, p = 0.03) and A’ velocity (0.17 ± 0.04 vs. 0.22 ± 0.04, p = 0.008) decreased while A/A’ ratio (2.7 ± 0.2 vs. 1.9 ± 0.1, p = 0.006) increased. Peak A velocity was not affected. Videodensitometric analysis revealed a 2.3-fold increase in IAS fibrosis fraction in AF patients compared with controls (p = 0.01).

Conclusion:

Patients with AF in sinus rhythm have markedly depressed atrial contractile function. Videodensitometry of IAS has the potential to be used as inexpensive method of atrial fibrosis assessment in patients with AF.

Palavras-chave : Atrial contractile function; Atrial fibrosis; Videodensitometry.

        · resumo em Espanhol     · texto em Inglês     · Inglês ( pdf )