Table 5.
Right ventricular characteristics assessed by echocardiography
| Right ventricle | COPD (n=49) | Controls (n=36) | P-value |
|---|---|---|---|
| End-diastolic diameter (mm) | 35.2±5.2 | 33.4±4.1 | ns |
| End-systolic diameter (mm) | 25.2±4.7 | 24.1±3.9 | ns |
| Trasversal diameter (mm) | 36.8±6.5 | 36.3±5.1 | ns |
| Longitudinal diameter (mm) | 65.7±8.7 | 65.2±7.2 | ns |
| DTE S pv (cm/s) | 15.4±4.2 | 16.1±4.2 | ns |
| DTE S tvi (cm) | 2.9±0.9 | 3.2±0.7 | <0.05 |
| Tricuspid E pv (cm/s) | 40.9±8.9 | 40.9±8.7 | ns |
| Tricuspid E tvi (cm) | 6.6±2.2 | 7.7±2.1 | <0.05 |
| Tricuspid A pv (cm/s) | 42.5±9.5 | 40.1±7.1 | ns |
| Tricuspid A tvi (cm) | 5.0±1.5 | 5.1±1.4 | ns |
| DTE E′ pv (cm/s) | 13.1±4.0 | 14.6±3.7 | ns |
| DTE E′ tvi (cm) | 2.1±0.8 | 2.5±0.7 | 0.01 |
| DTE A′ pv (cm/s) | 18.3±4.3 | 18.5±4.2 | ns |
| DTE A′ tvi (cm) | 1.9±0.5 | 1.9±0.5 | ns |
| Tricuspid E/A pv | 1.0±0.2 | 1.0±0.3 | ns |
| Tricuspid E/A tvi | 1.4±0.5 | 1.6±0.5 | ns |
| DTE E′/A′ pv | 0.7±0.2 | 0.8±0.2 | ns |
| DTE E′/A′ tvi | 1.1±0.4 | 1.3±0.3 | <0.05 |
| Pulmonary pressure (mmHg) | 30.9±8.2 | 25.8±3.4 | <0.01 |
| AT on pulmonary flow (ms) | 119±29 | 144±22 | <0.001 |
Note: Data are mean ± standard deviation.
Abbreviations: A′, end-diastolic myocardial wave; AT, acceleration time; DTE, Doppler tissue echocardiography; E′, proto-diastolic myocardial wave; pv, peak velocity; tvi, time velocity integral; S, systolic myocardial wave.