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Archivos de cardiología de México

versión On-line ISSN 1665-1731versión impresa ISSN 1405-9940

Resumen

GARCIA-LOPEZ, Zaira Y.  y  VARGAS-BARRON, Jesús. Evaluation of the global longitudinal strain and segmental strain of the right ventricle with two-dimensional speckle-tracking echocardiography with elevation of the legs. Arch. Cardiol. Méx. [online]. 2019, vol.89, n.1, pp.20-24.  Epub 15-Oct-2019. ISSN 1665-1731.  http://dx.doi.org/10.24875/acme.m19000003.

Introduction:

Speckle-tracking echocardiography has shown its usefulness in the evaluation of the right ventricle (RV) in healthy subjects and in pulmonary hypertension. It is unknown whether this technique could be sensitive to assess healthy RV with increases in preload.

Methods:

Consecutive subjects were studied without evidence of cardiopulmonary disease. They underwent speckle-tracking echocardiography in General Electric Vivid 7® equipment. The "segmental longitudinal strain" (SLS) and "global longitudinal strain" (GLS) of the RV was determined at rest and with an increase in the preload through elevation the legs to 45°.

Results:

We analyzed 31 subjects, 16 men and 15 women, aged 16-53 years, in which were measured SLS and GLS. Basal of the RV free wall: —29.1 ± 3.3 versus −32.7 ± 5.5%, p = 0.0002. Mid of the RV free wall: —28.6 ± 6.4 versus —31.5 ± 4.9 %, p = 0.001. Apical of the free wall of the RV: —21.9 ± 6.5 versus —23.3 ± 6.1 %, p = 0.118. Basal inferoseptum: —19.40 ± 3.2 versus —18.9 ± 3.0 %, p = 0.204. Mid inferoseptum: —19.3 ± 3.2 versus —19 ± 3.1 %, p = 0.249. Apical septum: —17.1 ± 5.1 versus —17 ± 5.4 %, p = 0.457. GLS of the RV: —23.06 ± 3.4 versus —24.5 ± 2.9 %, p = 0.002. ICC: 0.773, 95 % CI: 0.534-0.890, p < 0.001.

Conclusions:

This method was sensitive to detect differences in the GLS and SLS basal and mid of the RV free wall.

Palabras llave : Speckle-tracking echocardiography; Segmental longitudinal strain; Right ventricle; Preload; Global longitudinal strain; Elevation of the legs; Mexico.

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