In:
Cardiology, S. Karger AG, Vol. 121, No. 4 ( 2012), p. 255-260
Abstract:
〈 b 〉 〈 i 〉 Background: 〈 /i 〉 〈 /b 〉 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. 〈 b 〉 〈 i 〉 Methods: 〈 /i 〉 〈 /b 〉 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. 〈 b 〉 〈 i 〉 Results: 〈 /i 〉 〈 /b 〉 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). 〈 b 〉 〈 i 〉 Conclusion: 〈 /i 〉 〈 /b 〉 We suggest that LA-S and LA-SR imaging is a beneficial method to evaluate LAA functions noninvasively.
Type of Medium:
Online Resource
ISSN:
0008-6312
,
1421-9751
Language:
English
Publisher:
S. Karger AG
Publication Date:
2012
detail.hit.zdb_id:
1482041-9
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