Table 2– Arbitrary criteria for estimating the likelihood of pulmonary hypertension (PH) based on tricuspid regurgitation peak velocity, correspondent Doppler-calculated pulmonary arterial systolic pressure at rest (assuming a normal right atrial pressure of 5 mmHg) and additional echocardiographic variables suggestive of PH
PH present?Peak tricuspid regurgitant velocity m·s−1Pulmonary artery systolic pressure mmHgAdditional echocardiographic signs of PH
Unlikely≤2.8≤35No
Possible≤2.8≤35Yes
2.9–3.436–50No/yes
Likely>3.4>50No/yes