Table 2.
Comparison of pulmonary arterial pressures estimated by echocardiography versus catheterization
| N | Echo | Cath | Bias | SD of bias | limits of agreement | r | p value | coefficient of variation | |
|---|---|---|---|---|---|---|---|---|---|
|
|
|||||||||
| PASP at rest | |||||||||
| Overall | 65 | 25.1 ± 9.9 | 23.7 ± 13.6 | −1.5 | 10.8 | −22.7 – 19.7 | 0.62 | <0.001 | 0.44 |
| A | 44 | 25.2 ± 9.8 | 22.2 ± 11.4 | −2.9 | 8.0 | −18.6 – 12.7 | 0.72 | <0.001 | 0.34 |
| B | 17 | 25.7 ± 9.8 | 27.4 ± 18.9 | 1.7 | 15.8 | −29.3 – 32.7 | 0.55 | 0.02 | 0.60 |
| C | 4 | 22.7 ± 14.7 | 23.8 ± 10.2 | 1.1 | 12.6 | −23.6 – 25.7 | 0.54 | 0.46 | 0.54 |
| PASP at peak | |||||||||
| Overall | 65 | 40.4 ± 15.6 | 42.3 ± 19.0 | 1.9 | 16.3 | −30.1 – 33.9 | 0.57 | <0.001 | 0.39 |
| A | 22 | 48.8 ± 19.6 | 46.9 ± 23.5 | −1.9 | 15.6 | −32.3 – 28.6 | 0.75 | <0.001 | 0.33 |
| B | 28 | 38.2 ± 12.0 | 41.2 ± 15.6 | 3.0 | 15.1 | −26.7 – 32.6 | 0.42 | 0.03 | 0.38 |
| C | 15 | 32.1 ± 8.5 | 37.5 ± 17.0 | 5.4 | 19.3 | −32.5 – 43.3 | −0.05 | 0.87 | 0.55 |
| Δ PASP | |||||||||
| Overall | 65 | 15.3 ± 12.6 | 18.6 ± 10.1 | 3.4 | 11.1 | −18.4 – 25.2 | 0.54 | <0.001 | 0.66 |
| A | 22 | 19.6 ± 15.2 | 19.6 ± 11.9 | 0.0 | 11.0 | −21.5 – 21.5 | 0.70 | <0.001 | 0.56 |
| B | 28 | 15.0 ± 10.5 | 19.9 ± 10.0 | 4.9 | 11.4 | −17.5 – 27.3 | 0.38 | 0.05 | 0.65 |
| C | 15 | 9.2 ± 9.8 | 14.7 ± 6.8 | 5.5 | 10.3 | −14.6 – 25.6 | 0.28 | 0.32 | 0.86 |
| MPAP rest | |||||||||
| Overall | 62 | 16.1 ± 6.3 | 18.0 ± 10.0 | 2.1 | 8.2 | −13.9 – 18.1 | 0.59 | <0.001 | 0.48 |
| A | 44 | 16.2 ± 6.3 | 17.4 ± 9.5 | 1.3 | 7.6 | −13.6 – 16.1 | 0.61 | <0.001 | 0.45 |
| B | 16 | 16.2 ± 6.5 | 19.4 ± 11.8 | 3.7 | 9.8 | −15.5 – 22.9 | 0.58 | 0.02 | 0.56 |
| C | 2 | 14.9 ± 9.5 | 19.0 ± 7.0 | 8.6 | 1.7 | 5.2 – 12.0 | - | - | 0.10 |
| MPAP peak | |||||||||
| Overall | 55 | 26.3 ± 11.0 | 31.8 ± 14.1 | 6.1 | 12.0 | −17.4 – 29.6 | 0.59 | <0.001 | 0.41 |
| A | 22 | 31.2 ± 13.8 | 35.2 ± 17.7 | 4.0 | 11.3 | −18.2 – 26.2 | 0.77 | <0.001 | 0.34 |
| B | 24 | 24.3 ± 7.8 | 30.9 ± 12.0 | 6.4 | 12.4 | −17.8 – 30.6 | 0.24 | 0.25 | 0.44 |
| C | 9 | 19.5 ± 2.9 | 28.4 ± 11.4 | 10.6 | 12.6 | −14.0 – 35.3 | 0.35 | 0.35 | 0.50 |
| Δ MPAP | |||||||||
| Overall | 53 | 10.0 ± 8.1 | 13.7 ± 7.6 | 3.9 | 7.0 | −9.8 – 17.7 | 0.61 | <0.001 | 0.58 |
| A | 22 | 12.5 ± 9.3 | 14.9 ± 10.0 | 2.4 | 6.9 | −11.0 – 15.8 | 0.75 | <0.001 | 0.50 |
| B | 22 | 9.6 ± 7.2 | 14.2 ± 6.8 | 4.6 | 8.1 | −11.3 – 20.4 | 0.24 | 0.29 | 0.65 |
| C | 9 | 4.6 ± 3.9 | 11.2 ± 3.9 | 6.2 | 3.3 | −0.2 – 12.6 | 0.66 | 0.06 | 0.35 |
Values are presented as mean ± SD. Correlation (r) is based on Pearson correlation. P-values represent results of a test of whether the correlation is significantly different from 0.
A - Quality A tricuspid regurgitation (TR) envelope; B - Quality B TR envelope; C - Quality C TR envelope; Cath - catheterization; Echo - echocardiography; MPAP - mean pulmonary arterial pressure; PASP - systolic pulmonary arterial pressure; SD - standard deviation.