Table 3.
Baseline haemodynamic and cardiac MRI parameters of patients undergoing isolated tricuspid valve surgery according to the presence of the primary outcome, a composite of 1-year mortality or congestive heart failure (CHF)
| No mortality or CHF (N=44) |
Mortality or CHF (N=16) |
P value* | |
| Right heart catheter data | |||
| Central venous pressure, mean (SD) | 13.2 (7.1) | 17.7 (8.2) | 0.058 |
| Mean arterial pressure, mean (SD) | 14.8 (7.1) | 18.0 (5.0) | 0.19 |
| RV systolic pressure (mm Hg), mean (SD) | 32.8 (9.9) | 42.2 (13.2) | 0.009 |
| RV diastolic pressure (mm Hg), mean (SD) | 10.1 (9.0) | 15.1 (8.3) | 0.078 |
| RV systolic work index (mm Hg mL/m2), mean (SD) | 4.8 (6.2) | 4.9 (1.6) | 0.96 |
| PA systolic pressure (mm Hg), mean (SD) | 32.5 (11.7) | 41.7 (14.6) | 0.023 |
| PA diastolic pressure (mm Hg), mean (SD) | 15.9 (6.9) | 21.5 (9.5) | 0.024 |
| PA mean pressure (mm Hg), mean (SD) | 22.2 (8.1) | 30.8 (11.0) | 0.006 |
| Pulmonary pulse pressure (mm Hg), mean (SD) | 16.6 (7.5) | 20.2 (7.6) | 0.13 |
| Pulmonary arterial elastance (mm Hg/mL), mean (SD) | 0.5 (0.2) | 0.7 (0.4) | 0.041 |
| Pulmonary arterial compliance (mL/mm Hg), mean (SD) | 4.6 (2.1) | 3.5 (1.9) | 0.13 |
| Pulmonary artery pulsatility index, mean (SD) | 1.7 (1.4) | 1.3 (0.6) | 0.31 |
| PCWP (mm Hg), mean (SD) | 13.9 (5.6) | 18.5 (8.7) | 0.030 |
| Transpulmonary gradient (mm Hg), mean (SD) | 7.9 (4.6) | 11.2 (4.4) | 0.030 |
| Pulmonary vascular resistance (Dynes·s/cm5), mean (SD) | 147.3 (101.7) | 215.5 (113.7) | 0.063 |
| Systemic elastance (mm Hg/mL), mean (SD) | 0.3 (0.2) | 0.5 (0.2) | 0.052 |
| Stroke volume index (mL/m2), mean (SD) | 38.4 (26.2) | 32.7 (9.9) | 0.51 |
| Cardiac index (L/min/m2), mean (SD) | 2.5 (0.7) | 2.3 (0.6) | 0.23 |
| Cardiac power output, mean (SD) | 35.4 (17.9) | 40.9 (12.7) | 0.39 |
| Cardiac MRI | |||
| RA area (cm2), mean (SD) | 38.3 (10.0) | 46.0 (14.8) | 0.38 |
| RV ejection fraction (%), mean (SD) | 50.5 (7.3) | 51.2 (9.5) | 0.76 |
| RV end-diastolic volume index (mL/m2), mean (SD) | 123.8 (35.8) | 129.4 (49.2) | 0.65 |
| RV end-systolic volume index (mL/m2), mean (SD) | 63.0 (19.7) | 67.7 (34.6) | 0.53 |
| RV stroke volume index (mL/m2), mean (SD) | 64.1 (22.0) | 61.8 (18.9) | 0.73 |
| PA net forward volume (mL), mean (SD) | 68.1 (24.3) | 58.4 (23.6) | 0.25 |
| TR regurgitant volume index (mL), mean (SD) | 55.5 (33.8) | 47.8 (32.6) | 0.44 |
| TR regurgitant fraction index (%), mean (SD) | 41.8 (16.5) | 37.0 (11.5) | 0.29 |
| LV end-diastolic volume (mL/m2), mean (SD) | 69.8 (22.3) | 75.0 (16.6) | 0.40 |
| LV end-systolic volume (mL/m2), mean (SD) | 31.5 (15.6) | 33.6 (14.2) | 0.64 |
| Stroke volume index (L/m2), mean (SD) | 38.6 (13.6) | 43.7 (7.4) | 0.16 |
| Cardiac index (L/min/m2), mean (SD) | 3.3 (3.8) | 2.8 (0.6) | 0.57 |
| LV ejection fraction (%), mean (SD) | 56.0 (8.5) | 58.5 (9.6) | 0.34 |
*P values for continuous variables were calculated using t-tests and for categorical variables using χ2.
LV, left ventricular; PA, pulmonary artery; PCWP, pulmonary capillary wedge pressure; RA, right atrial; RV, right ventricular; TR, tricuspid regurgitation.