Table 3.
Comparison of global left atrial function between the NOHCM and control groups
| NOHCM | Healthy control | P-value | |
|---|---|---|---|
| n = 33 | n = 28 | ||
| LADI-AP (mm/m2) | 14.4 ± 2.3 | 14.1 ± 2.5 | 0.85 |
| LAVI (ml/m2) | |||
| LAVImax | 32.6 ± 7.9 | 31.1 ± 5.5 | 0.41 |
| LAVIpre-a | 23.3 ± 6.2 | 19.7 ± 4.9 | 0.02 |
| LAVImin | 13.6 ± 3.5 | 11.3 ± 2.9 | < 0.01 |
| Reservoir function | |||
| LA total EF (%) | 57.6 ± 8.2 | 63.9 ± 6.4 | < 0.01 |
| εs (%) | 35.0 ± 12.0 | 41.5 ± 11.2 | 0.03 |
| SRs (s− 1) | 1.3 ± 0.4 | 1.5 ± 0.4 | 0.02 |
| Conduit function | |||
| LA passive EF (%) | 28.7 ± 9.1 | 37.1 ± 10.0 | < 0.01 |
| εe (%) | 18.7 ± 7.9 | 25.9 ± 10.0 | < 0.01 |
| SRe (s−1) | −0.8 ± 0.3 | − 1.1 ± 0.4 | < 0.01 |
| Booster pump function | |||
| LA active EF (%) | 40.3 ± 10.1 | 42.1 ± 9.2 | 0.49 |
| εa (%) | 16.3 ± 6.5 | 15.6 ± 6.3 | 0.67 |
| SRa (s−1) | − 1.1 ± 0.5 | −1.0 ± 0.4 | 0.49 |
Data are expressed as mean ± SD
LADI-AP left atrial anteroposterior diameter index, LAEF left atrial emptying fraction, LAVImax left atrial maximum volume index, LAVIpre-a left atrial pre-atrial contraction volume index, LAVImin left atrial minimum volume index, εs total strain, εe passive strain, εa active strain, SRs peak positive strain rate, SRe peak early negative strain rate, SRa peak late negative strain rate