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Revista Uruguaya de Cardiología

versión impresa ISSN 0797-0048versión On-line ISSN 1688-0420

Resumen

AMERICO, Carlos et al. Left atrium strain by speckle tracking: evaluation of its global and segmental reproducibility. Rev.Urug.Cardiol. [online]. 2019, vol.34, n.3, pp.49-72.  Epub 01-Dic-2019. ISSN 0797-0048.  http://dx.doi.org/10.29277/cardio.34.3.7.

Objective:

to evaluate intra and inter-observer reproducibility of speckle tracking left atrial strain reservoir function using a protocol for its global and segmental analysis.

Methods:

a protocol for acquisition and measurement of left atrial strain was created (bull’s-eye type), for its global and segmental analysis. Reproducibility was assessed using intraclass correlation coefficient in twenty participants from the GEnotipo, Fenotipo y Ambiente de la HiperTensión arterial en el UruguaY cohort. For global assessment intra-observer reproducibility graded excellent (0.92 (IC: 0.81-0.97)) while inter-observer reached good reproducibility (0.82 (IC: 0.59-0.92)). Left atrial strain segmental analysis was not reproducible. Mean (±SD) left atrial strain was 31.0±7.5% for 4 chamber view, 34.6±9.9% for 2 chamber view and 36.8±13.9% for 3 chamber view. Global left atrial strain considering three views was 34.1±7.8%, and 32.8±6.5% considering 4 and 2 chamber views.

Conclusion:

left atrial strain acquisition and analysis protocol for reservoir function was reproducible for its global but not for its segmental analysis.

Palabras clave : Left atrial strain; Speckle-Tracking Echocardiography; Population study.

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