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Carotid artery stiffness evaluated early by wave intensity in normal left ventricular function in post-radiotherapy patients with nasopharyngeal carcinoma

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Abstract

Purpose

This study aims to assess carotid elasticity early in normal left ventricular function in post-radiotherapy patients with nasopharyngeal carcinoma (NPC) by wave intensity.

Methods

Sixty-seven post-radiotherapy patients all with normal left ventricular function were classified into group NPC1 and group NPC2 based on their carotid intima-media thickness. Thirty age- and sex-matched NPC patients without any history of irradiation and chemotherapy were included as a control group. Carotid parameters, including stiffness constant (β), pressure–strain elastic modulus (Ep), arterial compliance (AC), stiffness constant pulse wave velocity (PWVβ), and wave intensity pulse wave velocity (PWVWI) were measured.

Results

There were no significant differences in conventional echocardiographic variables among the three groups. In comparison with the control group, β, Ep, PWVβ, and PWVWI were significantly increased, while AC was significantly decreased in the NPC1 and NPC2 groups, and there were differences between the NPC1 group and NPC2 group (all P < 0.05).

Conclusion

This study suggested that carotid artery stiffness increased with reduced carotid compliance in post-RT with NPC.

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Acknowledgements

Thanks to Jie Li, Juan Li, and Jingbin Shi from the Department of Radiation Oncology, the Second Affiliated Hospital of Dalian Medical University, China for helping in collection of the cases.

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Correspondence to Guangsen Li.

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Ethical statements

All participants provided their written consent for participation in this study. The design proposal and methods of data collection and analysis in this study were approved by the Ethics Committee of the Hospital.

Conflict of interest

There are no financial or other relations that could lead to a conflict of interest.

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Zhang, Z., Luo, R., Tan, B. et al. Carotid artery stiffness evaluated early by wave intensity in normal left ventricular function in post-radiotherapy patients with nasopharyngeal carcinoma. J Med Ultrasonics 45, 301–306 (2018). https://doi.org/10.1007/s10396-017-0817-2

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  • DOI: https://doi.org/10.1007/s10396-017-0817-2

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