Can Left Atrial Strain and Strain Rate Imaging Be Used to Assess Left Atrial Appendage Function?


Arslan S., Simsek Z., Gundogdu F., Aksakal E., Kalkan M. E. , Gurlertop Y., et al.

CARDIOLOGY, cilt.121, ss.255-260, 2012 (SCI İndekslerine Giren Dergi) identifier

  • Cilt numarası: 121 Konu: 4
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1159/000337291
  • Dergi Adı: CARDIOLOGY
  • Sayfa Sayısı: ss.255-260

Özet

Background: The aim of this study was to evaluate the efficiency of left atrial strain (S) and strain rate (SR) imaging in assessing left atrial appendage (LAA) function. Methods: We studied 78 consecutive patients (35 females and 43 males; mean age 38 +/- 15 years) referred for transesophageal echocardiography (TEE). LAA late emptying velocity (LAA-EV) was calculated. Real-time color Doppler myocardial velocity imaging (MVI) data were recorded from the LAA by TEE and the lateral wall of the left atrium (LA) by transthoracic echocardiography. Longitudinal S and SR were measured in the mid portion of the lateral LA wall and lateral LAA wall during the contractile period. LAA late systolic velocity (LSV) and LA-LSV were obtained from Doppler analysis. Results: A significant positive correlation was detected between LAA-EV and MVI parameters (for LAA-S, r = 0.88, p < 0.001; for LAA-SR, r = 0.84, p < 0.001; for LAA-LSV, r = 0.83, p < 0.001; for LA-S, r = 0.84, p < 0.001; for LA-SR, r = 0.79, p < 0.001, and for LA-LSV, r = 0.70, p < 0.001). In addition, a significant positive correlation was detected between LAA-S and LA-S (r = 0.85, p < 0.001). Conclusion: We suggest that LA-S and LA-SR imaging is a beneficial method to evaluate LAA functions non-invasively. Copyright (C) 2012 S. Karger AG, Basel