TABLE 2.
Left Atrial Parameters by Inappropriate ICD Shocks
| No Inappropriate ICD Shock (N = 136) |
Inappropriate ICD Shocks (N = 26) |
P Value | |
|---|---|---|---|
| LAVImin, mL/m2 | 25.3 (17.9 – 38.9) | 35.8 (18.0 – 59.5) | 0.16 |
| LAVImax, mL/m2 | 42.5 (32.7 – 57.2) | 49.2 (30.2 – 68.7) | 0.39 |
| LAVIpreA, mL/m2 | 38.5 (28.3 – 53.0) | 42.5 (28.3 –67.4) | 0.31 |
| LASVI, mL/m2 | 16.0 ± 6.1 | 13.6 ± 5.8 | 0.09 |
| LA total EF, % | 38.0 (25.0 – 48.9) | 31.0 (16.7 – 43.5) | 0.049 |
| LA passive EF, % | 10.1 (4.9 – 16.2) | 9.6 (4.3 – 15.2) | 0.83 |
| LA active EF, % | 30.7 (16.6 – 39.8) | 25.7 (9.1 – 33.4) | 0.027 |
| LASmax, % | 20.4 (10.9 – 27.9) | 13.2 (6.5 – 21.0) | 0.014 |
| LASpreA, % | 12.9 (6.4 – 18.6) | 8.8 (2.8 – 14.0) | 0.006 |
| LASRs, 1/s | 0.78 (0.47 – 1.05) | 0.60 (0.29 – 0.94) | 0.051 |
| LASRe, 1/s | −0.46 (−0.75 – −0.29) | −0.45 (−0.64 – −0.21) | 0.44 |
| LASRa, 1/s | −1.1 (−1.64 – −0.64) | −0.79 (−1.1 – −0.25) | 0.004 |
Data are presented as median (interquartile range), or mean ± standard deviation.
EF = emptying fraction; LA = left atrium; Smax = maximum strain; SpreA = pre-atrial contraction strain; SRa = strain rate at atrial contraction; SRe = strain rate at left ventricular early diastole; SRs = maximum strain rate; SVI = stroke volume index; VImax = maximum indexed volume; VImin = minimum indexed volume; VIpreA = pre-atrial contraction indexed volume; Abbreviations as in Table 1.