Usefulness of vector velocity imaging in the descending thoracic aorta.

Abstract

Objective: To evaluate the Speckle Tracking values in the descending thoracic aorta (DTA) of a healthy population.

Desing: This is an observational study.

Setting: Hospital Universitario de Jaén.

Participants: Our study included 242 healthy people (102 women) with a mean age of 42.35±16.37 years.

Interventions: Evaluation of Speckle Tracking in DTA.

Main variables of interest: Strain, velocity and displacement values in the DTA were evaluated.

Results: The DAT rotational velocity was 55.91±0.22º/s, the DTA radial velocity was 0.98±0.28cm/s, the circumferential strain of the DTA was -8.98±0.87%, while the circumferential strain rate was -0.96±0.15/s. The rotational displacement of the DTA was determined at 8.87±0.36º, while radial displacement was 0.82±0.11mm. Logistic regression found an association between the rotational values of the aorta and the longitudinal strain of both ventricles. In thirty people, strain, rotational velocity and displacement were also evaluated in the apical 4-chamber views and in the parasternal long-axis view. Both projections showed similar values.

Conclusion: Speckle Tracking could be used to study the descending thoracic aorta, and its values could suggest or rule out the presence of cardiovascular pathology.