Arbitrary criteria for estimating the presence of pulmonary hypertension(PH) based on tricuspid regurgitation peak velocity and Doppler-calculated pulmonary arterial (PA) systolic pressure at rest (assuming a normal right atrial pressure of 5 mmHg) and on additional echocardiographic variables suggestive of PH
| Class# | Level¶ | |
| Echocardiographic diagnosis: PH unlikely | ||
| Tricuspid regurgitation velocity ≤2.8 m·s−1, PA systolic pressure ≤36 mmHg and no additional echocardiographic variables suggestive of PH | I | B |
| Echocardiographic diagnosis: PH possible | ||
| Tricuspid regurgitation velocity ≤2.8 m·s−1, PA systolic pressure ≤36 mmHg, but presence of additional echocardiographic variables suggestive of PH | IIa | C |
| Tricuspid regurgitation velocity 2.9–3.4 m·s−1, PA systolic pressure 37–50 mmHg with/without additional echocardiographic variables suggestive of PH | IIa | C |
| Echocardiographic diagnosis: PH likely | ||
| Tricuspid regurgitation velocity >3.4 m·s−1, PA systolic pressure >50 mmHg, with/without additional echocardiographic variables suggestive of PH | I | B |
| Exercise Doppler echocardiography is not recommended for screening of PH | III | C |
#: class of recommendation; ¶: level of evidence.