Table 2.
Correlations between RC measurements and hemodynamic variables
| RCFIT (n) | RCSL (n) | RCEST (n) | ||
|---|---|---|---|---|
| Entire Cohort | RCFIT | 0.65** (138) | 0.69** (164) | |
| RCSL | 0.65** (138) | 0.86** (156) | ||
| RCEST | 0.69** (164) | 0.86** (156) | ||
| PVR | 0.36** (164) | 0.61** (156) | 0.61** (182) | |
| DPG | 0.48** (164) | 0.76** (156) | 0.76** (182) | |
| PAWP | -0.35** (141) | -0.34** (135) | -0.49** (157) | |
| HR | -0.25** (164) | -0.16* (156) | -0.14 (182) | |
| PAPD | 0.14 (164) | 0.50** (156) | 0.46** (182) | |
| CO | -0.16* (164) | -0.18* (156) | -0.08 (182) | |
| LHD-PH | 0.58** (107) | 0.61** (132) | ||
| 0.58** (107) | 0.75** (112) | |||
| 0.61** (132) | 0.75** (112) | |||
| PVR | 0.31** (132) | 0.37** (112) | 0.48** (137) | |
| DPG | 0.46** (132) | 0.68** (112) | 0.73** (137) | |
| PAWP | -0.28** (109) | -0.11 (92) | -0.32** (113) | |
| HR | -0.13 (132) | -0.25** (112) | -0.20* (137) | |
| 0.13 (132) | 0.33** (112) | 0.32** (137) | ||
| CO | -0.25** (132) | -0.15 (112) | -0.06 (137) | |
| PAH | 0.83** (22) | 0.89** (22) | ||
| 0.83** (22) | 0.92** (35) | |||
| 0.89** (22) | 0.92** (35) | |||
| PVR | 0.19 (22) | 0.60** (35) | 0.44** (35) | |
| DPG | 0.22 (22) | 0.67** (35) | 0.59** (35) | |
| PAWP | -0.33 (22) | -0.35* (34) | -0.35* (34) | |
| HR | -0.78** (22) | -0.19 (35) | -0.22 (35) | |
| 0.06 (22) | 0.59** (35) | 0.50** (35) | ||
| CO | 0.06 (22) | -0.31 (35) | -0.1 (35) | |
| Non-PH | 0.33 (9) | 0.53 (10) | ||
| 0.33 (9) | 0.76* (9) | |||
| 0.53 (10) | 0.76* (9) | |||
| PVR | 0.18 (10) | 0.35 (9) | 0.74* (10) | |
| DPG | 0.35 (10) | 0.88** (9) | 0.84** (10) | |
| PAWP | -0.92** (10) | -0.48 (9) | -0.55 (10) | |
| HR | -0.51 (10) | -0.45 (9) | -0.78** (10) | |
| -0.47 (10) | 0.3 (9) | 0.32 (10) | ||
| CO | 0.53 (10) | -0.15 (9) | -0.21 (10) |
RCEST denotes RC-derived using the empirical approach, RCSL RC derived from the semilogarithmic equation, RCFIT RC derived from the curve fit analysis, PVR Pulmonary vascular resistance, DPG Diastolic pressure gradient, PAWP Pulmonary artery wedge pressure, HR Heart rate, PAPD Diastolic pulmonary artery pressure, CO Cardiac output, PH-LHD Pulmonary hypertension in left heart disease, PAH Pulmonary arterial hypertension, Non-PH No pulmonary hypertension
*signifies a significant difference at a level of p < 0.05
**signifies a significant difference at a level of p < 0.001