| Parameter | [Ref.] | Normal | Intermediate | Abnormal |
| Pra mmHg | [8] | <5 | 5–10 | >10 |
| TRV m·s−1 | [13] | <2.6 | ≥2.6 ≥2.8 in obese subjects ≥2.9 in patients >60 yrs | |
| RVSP mmHg | [13] | <37 | ≥37 ≥40 in obese subjects ≥44 in patients >60 yrs | |
| RVOT acceleration time ms | [8, 15, 16] | >110 | 105–110 | <105 |
| RA volume index mL·m−2 | [8] | ≤34 in males and ≤27 in females | >34 in males >27 in females | |
| RV fractional area change % | [8, 21, 22] | 32–60 | ≤32 | |
| LV eccentricity index | [8, 44, 45] | 1 | >1 at end-diastole indicates volume loading of the RV >1 at end-systole indicates pressure loading of the RV | |
| RV MPI (Tei index) | [8, 25–27] | <0.28 | 0.28–0.32 | >0.32 |
| S' wave of tricuspid annulus cm·s−1 | [33, 35] | >12 | 11.5–12 | <11.5 |
| IVRT s | [6, 8, 31, 32] | <75 | ≥75 | |
| TAPSE ms | [8, 28–30] | ≥20 | 16–20 | <16 |
| Estimated PVR Wood units | [46, 47] | <1 | 1–3 | >3 |
Pra: right atrial pressure; TRV: tricuspid regurgitant velocity; RVSP: right ventricular systolic pressure; RVOT: right ventricular outflow tract; RA: right atrium; RV: right ventricle; LV: left ventricle; MPI: myocardial performance index; S' wave: systolic wave; IVRT: isovolumic relaxation time; TAPSE: tricuspid annular plane systolic exertion; PVR: pulmonary vascular resistance.