Clinical Study
Novel Models for the Prediction of Left Atrial Appendage Thrombus in Patients with Chronic Nonvalvular Atrial Fibrillation
Table 2
Left atrial strain and strain rate parameters in patients with nonvalvular atrial fibrillation.
| LA parameter on TTE | With LAAT (n = 35) | Without LAAT (n = 109) | value |
| Diameter, cm | 6.49 ± 0.59 | 6.13 ± 0.77 | 0.015 | Area in two-chamber view (cm2) | 28.51 ± 4.17 | 24.33 ± 5.54 | <0.001 | Area in four-chamber view (cm2) | 30.0 ± 5.32 | 26.35 ± 5.43 | 0.001 | Volume (mL) | 111.79 ± 30.42 | 88.33 ± 29.02 | <0.001 | Volume index (mL/m2) | 69.59 ± 21.17 | 55.78 ± 20.16 | 0.001 | Positive strain in two-chamber view (%) | 5.68 ± 1.91 | 10.61 ± 6.92 | <0.001 | Positive strain in four-chamber view (%) | 5.28 ± 2.54 | 10.47 ± 5.31 | <0.001 | Positive strain rate in two-chamber view (s−1) | 0.52 ± 0.16 | 0.7 ± 0.31 | <0.001 | Positive strain rate in four-chamber view (s−1) | 0.51 ± 0.15 | 0.69 ± 0.26 | <0.001 | Negative strain rate in two-chamber view (s−1) | −0.63 ± 0.19 | −0.91 ± 0.45 | <0.001 | Negative strain rate in four-chamber view (s−1) | −0.57 ± 0.18 | −0.98 ± 0.41 | <0.001 |
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Data represent mean ± standard deviation. LA: left atrial; LAAT: left atrial appendage thrombus; TEE: transthoracic echocardiography.
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