Table 1 Right and left atrial dynamics
Left atrium | Right atrium | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Exam A | Exam B | Exam C | P value a | Exam A | Exam B | Exam C | P value a | ||
Atrial function | Volumetric index (%) | ||||||||
Reservoir; global | EF Total | 66.3 ± 7.5 | 64.8 ± 5.8 | 68.8 ± 8.4 | 0.09 | 55.0 ± 9.6 | 54.5 ± 9.6 | 54.4 ± 6.3 | 0.68 |
Conduit | EF Passive | 45.8 ± 7.5 | 45.2 ± 7.7 | 46.7 ± 9.8 | 0.62 | 34.2 ± 8.6 | 32.2 ± 8.3 | 30.9 ± 5.6 | 0.16 |
Booster pump | EF Booster | 38.3 ± 7.5 | 35.6 ± 7.9 | 41.9 ± 7.6 | 0.40 | 32.4 ± 8.5 | 33.3 ± 9.1 | 34.0 ± 7.6 | 0.26 |
Strain (%) | |||||||||
Reservoir | εs | 31.8 ± 5.4 | 31.5 ± 5.3 | 31.3 ± 4.8 | 0.16 | 34.0 ± 9.5 | 34.6 ± 7.9 | 33.9 ± 6.7 | 0.41 |
Conduit | εe | 24.2 ± 5.6 | 23.7 ± 5.2 | 23.3 ± 4.9 | 0.16 | 22.2 ± 6.8 | 22.8 ± 5.3 | 22.6 ± 4.4 | 0.78 |
Booster pump | εa | 7.6 ± 3.1 | 7.7 ± 3.0 | 7.9 ± 2.7 | 0.77 | 11.8 ± 4.4 | 11.8 ± 4.4 | 11.3 ± 4.0 | 0.40 |
Strain Rate (s −1 ) | |||||||||
Reservoir | SRs | 1.2 ± 0.2 | 1.2 ± 0.3 | 1.3 ± 0.3 | 0.91 | 1.3 ± 0.4 | 1.3 ± 0.3 | 1.4 ± 0.5 | 0.67 |
Conduit | SRe | −1.6 ± 0.4 | −1.4 ± 0.3 | −1.4 ± 0.3 | 0.06 | −0.9 ± 0.3 | −0.9 ± 0.3 | −1.1 ± 0.4 | 0.18 |
Booster pump | SRa | −0.9 ± 0.4 | −0.9 ± 0.4 | −1.0 ± 0.4 | 0.56 | −1.2 ± 0.7 | −1.1 ± 0.6 | −1.2 ± 0.7 | 0.98 |
Atrial volume (ml) | |||||||||
Maximum | 66.0 ± 16.2 | 67.0 ± 15.4 | 64.9 ± 17.8 | 0.55 | 80.0 ± 23.1 | 80.9 ± 24.3 | 78.7 ± 23.1 | 0.79 | |
Minimum | 22.6 ± 8.6 | 23.8 ± 7.6 | 21.2 ± 11.1 | 0.03b | 37.1 ± 15.5 | 37.9 ± 16.3 | 36.5 ± 13.2 | 0.68 | |
Prior to atrial contraction | 36.1 ± 11.4 | 36.9 ± 10.7 | 35.8 ± 15.8 | 0.46 | 53.7 ± 19.8 | 55.6 ± 21.2 | 54.4 ± 17.0 | 0.42 | |