Abstract
Aortic stiffness is an important risk factor for cardiovascular events and morbidity. Increased aortic stiffness is associated with an increase in cardiac and vascular hypertension-related organ damage. To evaluate the biomechanical properties of the ascending aorta (AA) in patients with arterial hypertension (AH) by velocity vector imaging (VVI). Ninety-five patients with AH and 53 normal healthy control participants were prospectively enrolled. AA biomechanical properties, i.e., ascending aortic global longitudinal strain (ALS), ascending aortic global circumferential strain (ACS), and fractional area change (FAC), were evaluated by VVI. Relative wall thickness (RWT) and left ventricular mass (LVM) were calculated. Pulsed Doppler early transmitral peak flow velocity (E), early diastolic mitral annular velocity (e′), left ventricular global longitudinal strain (GLS), distensibility (D) and stiffness index (SI) of AA were also obtained. The ALS, ACS and FAC were significantly lower in the AH patients, especially in those with ascending aorta dilatation (AAD), than in the normal healthy control subjects. The patients with AAD had a higher E/e′ ratio, RWT, LVM and SI and a lower GLS and D than patients without AAD and normal healthy volunteers (p < 0.05). There were significant associations between biomechanical properties and D, SI, E/e′ and GLS (ALS and D: r = 0.606, ALS and SI: r = − 0.645, ALS and E/e′: r = − 0.489, ALS and GLS: r = 0.466, ACS and D: r = 0.564, ACS and SI: r = − 0.567, ACS and E/e′: r = − 0.313, ACS and GLS: r = 0.320, FAC and D: r = 0.649, FAC and SI: r = − 0.601, FAC and E/e′: r = − 0.504, FAC and GLS: r = 0.524, respectively, p < 0.05). The biomechanical properties of AA were impaired in patients with AH, especially patients with ascending aorta dilatation. Hypertension is associated with a high prevalence of diastolic and systolic dysfunction and increased arterial stiffness. Further study is needed to evaluate the clinical application of AA biomechanical properties by VVI.
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Abbreviations
- AA:
-
Ascending aorta
- AH:
-
Arterial hypertension
- VVI:
-
Velocity vector imaging
- ALS:
-
Ascending aortic global longitudinal strain
- ACS:
-
Ascending aortic global circumferential strain
- FAC:
-
Fractional area change
- PP:
-
Pulse pressure
- E:
-
Pulsed Doppler early transmitral peak flow velocity
- e′:
-
Early diastolic mitral annular velocity
- D:
-
Distensibility
- SI:
-
Stiffness index
- SBP:
-
Systolic blood pressure
- DBP:
-
Diastolic blood pressure
- LAD:
-
Left atrial diameter
- LVEDD:
-
LV end-diastolic diameter
- RWT:
-
Relative wall thickness
- LVM:
-
Left ventricular mass
- HR:
-
Heart rate
- EF:
-
Ejection fraction
- SOV:
-
Sinus of valsalva
- ASCs:
-
Ascending aorta
- GLS:
-
The global longitudinal strain
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Acknowledgements
We thank all the patients and control subjects for their participation in this study.
Funding
This work was supported by the State Natural Sciences Foundation of China (Nos. 81871372 and 81801721) and the Natural Science Foundation of Hunan Province (Nos. 2019JJ40425 and 2019JJ50880).
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GQ, X and ZR, Y collected general clinical data of the patients and measured blood pressure. SZ and LY consulted the relevant literature. LY performed ultrasound ex-amination and analyzed the patient data. LY was the main contributor to the manuscripts. All authors reviewed the manuscript.
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10554_2023_3003_MOESM1_ESM.jpg
In figure A, the velocity vector image of the traced ascending aorta is shown in the parasternal long-axis view. In figure B, green and white represent the anterior wall of the ascending aorta, and blue and yellow represent the posterior wall of the ascending aorta. In figure C, the velocity vector image of the traced ascending aorta is shown in the great artery short-axis view. In figure D, green represents the anterior wall of the ascending aorta, white represents the left lateral wall of the ascending aorta, blue represents the posterior wall of the ascending aorta, and purple represents the right lateral wall of the ascending aorta. Supplementary material 1 (JPG 8124.7 kb)
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Yu, L., Xu, G., Zhou, Q. et al. Biomechanical properties of the ascending aorta in patients with arterial hypertension by velocity vector imaging. Int J Cardiovasc Imaging 40, 397–405 (2024). https://doi.org/10.1007/s10554-023-03003-9
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DOI: https://doi.org/10.1007/s10554-023-03003-9