Echocardiographic features supporting pulmonary hypertension
| Right atrial dilation (area > 18 cm2) |
| Elevated right atrial pressure based on inferior vena cava (IVC) assessment (IVC > 21 mm and collapses < 50% with inspiratory sniff) |
| Ratio of right ventricle to left ventricle basal diameter > 1 |
| Interventricular septal flattening or bowing towards the left ventricle |
| A “mid-systolic notch” across the right ventricular outflow tract |
| Reduced right ventricular outflow Doppler acceleration time < 105 msec |
| Increased early diastolic pulmonary regurgitation velocity > 2.2 m/sec |
| Pulmonary artery diameter > 25 mm |
Based on information in Galiè et al, reference 1.