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Review Article | Volume 26 Issue 1 (, 2021) | Pages 37 - 44
Assessment of Contributors of Aortopathy and Subclinical Left Ventricular Dysfunction in Normally Functioning Bicuspid Aortic Valves
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1
Karşıyaka State Hospital, Department of Cardiology, Izmir, Turkey. Electronic correspondence: kamiltuluce@gmail.com.
2
Izmir Katip Çelebi University, Atatürk Training and Research Hospital, Department of Cardiology, Izmir, Turkey.
Under a Creative Commons license
PMID : -28544830
Published
Jan. 9, 2017
Abstract

Background: Left ventricular (LV) function and the dimensions of aortic valves from normally functioning bicuspid aortic valve (BAV) patients were compared with those of healthy control patients. A comparison between patients with antero-posterior BAV (BAV-AP) or right-left BAV (BAV-RL) was also performed, and the determinants of aortopathy and LV function were investigated.

Methods: Sixty-eight patients with aortic velocities <2 m/s and trivial or mild aortic regurgitation were included in the study. All patients underwent transesophageal echocardiography to diagnose BAV and identify associated phenotypes. Twodimensional (2D), Doppler echocardiographic evaluation, and strain imaging were also performed, and the results compared with those obtained from 55 age- and gender-matched healthy controls.

Results: The LV ejection fractions were similar between BAV patients and healthy controls, while LV global longitudinal strain (LVGLS) (p = 0.03) and LV global circumferential strain (LVGCS) (p = 0.02) were significantly lower among BAV patients. Aortic velocities and aortic dimensions at theannulus, sinus of Valsalva and sinotubular junction were significantly greater in BAV patients (all p <0.001). The diameter of the tubular ascending aorta (AA) was correlated with age (r = 0.55, p <0.001), septal E/e' (r = 0.4, p = 0.003), and LV mass index (r = 0.29, p = 0.024). Multivariate analyses revealed that the primary determinant of the AA diameter in BAV patients was age (β = 0.38, p = 0.04), and enlargement of the AA was independent of the diastolic properties of the left ventricle and LVGLS. No significant differences were observed among the 2D or Doppler echocardiography parameters, nor among strain measurements, between BAV-AP (n = 47) and BAV-RL (n = 21) phenotypes.

Conclusions: Subclinical myocardial dysfunction was observed in BAV patients with normal aortic valve function. LV dysfunction was independent of age, aortic velocity and AA diameter, which suggested the presence of intrinsic myocardial disease. Aging contributes to aortic dilatation in normally functioning BAV.

 

 

 

How to cite: Tuluce, K., Yakar Tuluce, S., Cagri Simsek, E., Bayata, S., & Nazli, C. (2017). Assessment of Contributors of Aortopathy and Subclinical Left Ventricular Dysfunction in Normally Functioning Bicuspid Aortic Valves. The Journal of heart valve disease26(1), 37–44.

 
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