Table 2.
Echocardiographic and strain variables of patients with atrial fibrillation (AF) as compared to the control group
| Echo variables | AF (n=41) | Controls (n=41) | P value | |||
|---|---|---|---|---|---|---|
| LVIDd, mm |
50.2 ± 2.6 |
44.8 ± 1.8 |
<0.01 |
|||
| LVIDs, mm |
35.6 ± 3.2 |
28.0 ± 1.8 |
<0.01 |
|||
| STd, mm |
10 ± 0.6 |
8.9 ± 0.6 |
<0.01 |
|||
| PWTd, mm |
10 ± 0.6 |
8.1 ± 0.6 |
<0.01 |
|||
| LVEF (%) |
54.0 ± 3.6 |
65.1 ± 1.0 |
<0.01 |
|||
| LAD, mm |
45.9 ± 4.0 |
33.4 ± 2.0 |
<0.01 |
|||
| LAVI, ml/M2 |
34.7 ± 4.0 |
23.4 ± 3.2 |
<0.01 |
|||
| E/E’ |
10.7 ± 1.8 |
7.6 ± 0.8 |
<0.01 |
|||
| |
Pre- CV |
Post- CV |
P value |
|
|
|
| 2CLAS, % |
12.7 (10.2 – 15.2) |
16.5 (13.2 – 19.9) |
0.01 |
38.3 (33.1 – 43.5) |
<0.01 |
|
| 4CLAS, % |
11.0 (8.6 – 13.5) |
15.2 (12.4 – 18.0) |
<0.01 |
33.1 (29.6 – 36.6) |
<0.01 |
|
| LAS, % |
11.9 (9.8 – 13.9) |
15.9 (13.1 – 18.7) |
<0.01 |
35.7 (32.1 – 39.3) |
<0.01 |
|
| 2CLASt |
1.06 (0.81 – 1.32) |
1.25 (0.16 – 2.33) |
0.67 |
0.24 (0.19 – 0.28) |
<0.01 |
|
| 4CLASt |
1.57 (1.04 – 2.10) |
0.85 (0.61 – 1.09) |
0.02 |
0.24 (0.20 – 0.28) |
<0.01 |
|
| LASt | 1.32 (0.97 – 1.67) | 1.05 (0.44 – 1.66) | 0.62 | 0.23 (0.19 – 0.27) | <0.01 | |
LVIDd – Left ventricular internal diameter at end- diastole, LVIDs – Left ventricular internal diameter at end- systole, STd – Interventricular septum thickness at end-diastole, PWTd – Left ventricular posterior wall thickness at end-diastole, LVEF – Left ventricular ejection fraction, LAD – Left atrial diameter, LAVI – Left atrial volume index, E = early filling velocity of transmitral Doppler flow, E’ = Average early diastolic velocity of medial and lateral mitral annulus, 2CLAS - 2 chamber average peak systolic strain, 4CLAS - 4 chamber average peak systolic strain, LAS – Mean peak systolic strain of 2C and 4C, 2CLASt - 2 chamber left atrial stiffness, 4CLASt – 4 chamber left atrial stiffness, LASt – Mean left atrial stiffness of 2C and 4C.