Table 2.
Hemodynamic measurements and calculation by quartiles (Q1-Q4).
| Variables | PAPi Q1 (<3.7) | PAPi Q2 (3.7–5.8) | PAPi Q3 (5.9–9.2) | PAPi Q4 (>9.2) | P-Value |
|---|---|---|---|---|---|
| Directly measured hemodynamics | |||||
| Mean PAP (mmHg) | 58 (48–67) | 56 (48–64) | 54 (44–65) | 55 (48–65) | 0.75 |
| PCWP (mmHg) | 10 (7–13) | 9 (6–11) | 8 (6–10) | 5 (4–8) | <0.0001 |
| PASP (mmHg) | 84 (70–95) | 85 (72–100) | 85 (70–103) | 90 (76–104) | 0.40 |
| PADP (mmHg) | 43 (33–50) | 40 (34–46) | 36 (30–45) | 35 (30–43) | 0.01 |
| Mean RAP (mmHg) | 17 (13–21) | 10 (38–12) | 7 (5–8) | 3 (2–5) | <0.0001 |
| Calculated hemodynamics | |||||
| TPG (mmHg) | 46 (38–55) | 46 (36–57) | 45 (36–57) | 50 (42–59) | 0.38 |
| PVR (Wood units) | 15 (10–19) | 12 (8–19) | 12 (9–17) | 12 (9–19) | 0.28 |
| PA pulse pressure (mmHg) | 40 (30–53) | 45 (37–55) | 50 (38–58) | 53 (44–60) | <0.0001 |
| PA capacitance (ml/mmHg) | 0.8 (0.6–1.2) | 1.0 (0.7–1.7) | 0.9 (0.5–1.5) | 0.9 (0.6–1.3) | 0.62 |
| RVSWI (g/m2) | 10 (8–14) | 16 (12–20) | 20 (13–25) | 24 (15–28) | <0.0001 |
| PA elastance (mmHg/ml) | 2.6 (2–3) | 1.9 (1–3) | 1.8 (1–3) | 2.0 (1–3) | 0.10 |
| CI (L/min/m2) | 1.8 (1–2) | 2.1 (2–3) | 2.2 (2–3) | 2.5 (2–3) | <0.0001 |
CI, Cardiac Index; PA, pulmonary artery; PAP, pulmonary artery pressure; PADP, pulmonary artery diastolic pressure; PASP, pulmonary artery systolic pressure; PCWP, pulmonary capillary wedge pressure; PVR, pulmonary vascular resistance; RAP, right atrial pressure; RVSWI, right ventricle stroke work index; TGP, transpulmonary gradient.