Table 3.
Right atrial strain means measured by different echocardiography strain software in age, sex, and echocardiography scanner vendor subgroups in healthy subjects
| Strain vendor software | TomTec | EchoPAC | VVI | Epsilon |
|---|---|---|---|---|
| Number of subjects | 100 | 50 (GE scans only) | 100 | 100 |
| RASr (%) | ||||
| Overall (n = 100) | 41.2 ± 0.9 | 35.9 ± 0.7 | 44.8 ± 1.3 | 38.9 ± 1.1 |
| Age group (years) | ||||
| 18–29 (n = 20) | 44.4 ± 1.9 | 36.1 ± 3.9 | 51.4 ± 3.8 | 43.6 ± 1.9 |
| 30–39 (n = 20) | 38.6 ± 2.0 | 38.2 ± 3.0 | 45.3 ± 2.4 | 37.0 ± 2.9 |
| 40–49 (n = 20) | 43.1 ± 1.6 | 35.3 ± 1.7 | 42.4 ± 2.8 | 38.4 ± 3.1 |
| 50–59 (n = 20) | 43.0 ± 2.4 | 33.0 ± 1.3 | 41.7 ± 2.2 | 37.9 ± 2.3 |
| 60 + (n = 20) | 37.2 ± 1.8 | 32.3 ± 1.6 | 43.1 ± 2.3 | 37.4 ± 1.7 |
| Sex | ||||
| Male (n = 50) | 41.0 ± 1.3 | 33.0 ± 2.0 | 43.8 ± 1.7 | 36.9 ± 1.6 |
| Female (n = 50) | 41.5 ± 1.2 | 37.3 ± 1.5 | 45.7 ± 1.9 | 40.8 ± 1.5 |
| Scanner | ||||
| GE (n = 50) | 41.4 ± 1.2 | 35.1 ± 1.3 | 46.3 ± 1.9 | 36.6 ± 1.3 |
| Philips (n = 50) | 41.1 ± 1.3 | Non-measurable | 43.3 ± 1.7 | 41.2 ± 1.8 |
| RAScd (%) | ||||
| Overall (n = 100) | −25.9 ± 0.8 | −22.9 ± 0.7 | −27.6 ± 1.1 | −24.5 ± 1.0 |
| Age group (years) | ||||
| 18–29 (n = 20) | −30.2 ± 1.9 | −27.4 ± 2.9 | −36.3 ± 3.3 | −29.2 ± 1.9 |
| 30–39 (n = 20) | −24.3 ± 1.8 | −26.0 ± 2.3 | −24.9 ± 1.8 | −24.3 ± 2.6 |
| 40–49 (n = 20) | −27.8 ± 1.7 | −21.8 ± 1.6− | −28.8 ± 2.4 | −25.4 ± 2.8 |
| 50–59 (n = 20) | −25.5 ± 1.9 | −18.4 ± 1.4 | −24.0 ± 1.9 | −23.4 ± 1.9 |
| 60 + (n = 20) | −21.9 ± 1.4 | −19.9 ± 2.0 | −24.0 ± 1.6 | −20.1 ± 1.6 |
| Sex | ||||
| Male (n = 50) | −25.9 ± 1.2 | −20.6 ± 1.5 | −26.1 ± 1.4 | −23.1 ± 1.5 |
| Female (n = 50) | −26.0 ± 1.1 | −25.1 ± 1.3 | −29.1 ± 1.7 | −25.8 ± 1.3 |
| Scanner | ||||
| GE (n = 50) | −26.1 ± 1.2 | −22.8 ± 1.0 | −28.7 ± 1.8 | −22.3 ± 1.1 |
| Philips (n = 50) | −25.8 ± 1.1 | Non-measurable | −26.6 ± 1.3 | −26.7 ± 1.6 |
| RASct (%) | ||||
| Overall (n = 100) | −15.3 ± 0.5 | −12.4 ± 0.5 | −17.1 ± 0.8 | −14.3 ± 0.4 |
| Age group (years) | ||||
| 18–29 (n = 20) | −14.2 ± 1.0 | −13.6 ± 1.3 | −14.4 ± 1.8 | −14.5 ± 3.9 |
| 30–39 (n = 20) | −14.2 ± 0.8 | −12.0 ± 1.2 | −20.4 ± 1.9 | −12.7 ± 1.0 |
| 40–49 (n = 20) | −15.3 ± 0.8 | −13.6 ± 1.0 | −13.6 ± 0.9 | −13.3 ± 1.0 |
| 50–59 (n = 20) | −17.5 ± 1.3 | −10.3 ± 3.0 | −17.8 ± 2.1 | −14.5 ± 0.9 |
| 60 + (n = 20) | −15.3 ± 1.0 | −12.2 ± 0.9 | −19.1 ± 1.7 | −16.9 ± 0.9 |
| Sex | ||||
| Male (n = 50) | −15.1 ± 0.6 | −13.9 ± 0.7 | −17.4 ± 1.3 | −13.7 ± 0.6 |
| Female (n = 50) | −15.5 ± 0.6 | −10.9 ± 1.4 | −16.7 ± 0.9 | −15.0 ± 0.7 |
| Scanner | ||||
| GE (n = 50) | −15.3 ± 0.6 | −12.4 ± 0.8 | −17.4 ± 1.0 | −14.2 ± 0.6 |
| Philips (n = 50) | −15.3 ± 0.7 | Non-measurable | −16.7 ± 1.2 | −14.5 ± 0.7 |
Means ± standard errors. RASr right atrial reservoir strain, RAScd right atrial conduit strain, RASct right atrial contractile strain, VVI velocity vector imaging