Journal of Cardiovascular Imaging

Korean Society of Echocardiography (한국심초음파학회)
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REDUCED LONGITUDINAL FUNCTION IN CHRONIC AORTIC REGURGITATION

  • Lavine, Steven J. (Division of Cardiology, Department of Internal Medicine, Quillen College of Medicine, East Tennessee State University) ;
  • Al Balbissi, Kais A. (Division of Cardiology, Department of Internal Medicine, Quillen College of Medicine, East Tennessee State University)
  • Received : 2015.06.09
  • Accepted : 2015.11.18
  • Published : 2015.12.27
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Abstract

BACKGROUND: Chronic aortic regurgitation (AR) patients demonstrate left ventricular (LV) remodeling with increased LV mass and volume but may have a preserved LV ejection fraction (EF). We hypothesize that in chronic AR, global longitudinal systolic and diastolic function will be reduced despite a preserved LV EF. METHODS: We studied with Doppler echocardiography 27 normal subjects, 87 patients with chronic AR with a LV EF > 50% (AR + PEF), 66 patients with an EF < 50% [AR + reduced LV ejection fraction (REF)] and 82 patients with hypertensive heart disease. LV volume, transmitral spectral and tissue Doppler were obtained. Myocardial velocities and their timing and longitudinal strain of the proximal and mid wall of each of the 3 apical views were obtained. RESULTS: As compared to normals, global longitudinal strain was reduced in AR + PEF ($13.8{\pm}4.0%$) and AR + REF ($11.4{\pm}4.7%$) vs. normals ($18.4{\pm}3.6%$, both p < 0.001). As an additional comparison group for AR + PEF, global longitudinal strain was reduced as compared to patients with hypertensive heart disease (p = 0.032). The average peak diastolic annular velocity (e') was decreased in AR + PEF ($6.9{\pm}3.3cm/s$ vs. $13.4{\pm}2.6cm/s$, p < 0.001) and AR + REF ($4.8{\pm}2.1cm/s$, p < 0.001). Peak rapid filling velocity/e' (E/e') was increased in both AR + PEF ($14.4{\pm}6.2$ vs. $6.2{\pm}1.3$, p < 0.001) and AR + REF ($18.8{\pm}6.4$, p < 0.001 vs. normals). Independent correlates of global longitudinal strain (r = 0.6416, p < 0.001) included EF (p < 0.0001), E/e' (p < 0.0001), and tricuspid regurgitation velocity (p = 0.0176). CONCLUSION: With chronic AR, there is impaired longitudinal function despite preserved EF. Moreover, global longitudinal strain was well correlated with noninvasive estimated LV filling pressures and pulmonary systolic arterial pressures.

Keywords

References

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