Table 3.
Within-subject association between right ventricular function and measures of afterload. POD2, postoperative Day 2; RVEF, right ventricular ejection fraction; RVFWLS, right ventricular free-wall longitudinal strain; RVGLS, right ventricular global longitudinal strain; WRI, wave reflection index. Analysis of covariance with patient as a factor. Significant results (P<0.05) are highlighted in italic.
| Parameter | Pulmonary artery | RVEF (%) | RVGLS (%) | RVFWLS (%) | |
|---|---|---|---|---|---|
| Change between preoperative and POD2 | |||||
| WRI (%) | Operative | r | –0.480 | 0.015 | –0.174 |
| P | 0.028 | 0.952 | 0.518 | ||
| Non-operative | r | –0.024 | 0.337 | 0.311 | |
| P | 0.920 | 0.186 | 0.124 | ||
| Blood flow distribution (%) | Non-operative | r | –0.545 | 0.313 | –0.087 |
| P | 0.011 | 0.237 | 0.748 | ||
| Change between preoperative and 2 months | |||||
| WRI (%) | Operative | r | –0.070 | 0.450 | 0.487 |
| P | 0.763 | 0.053 | 0.035 | ||
| Non-operative | r | –0.268 | 0.702 | 0.745 | |
| P | 0.240 | 0.001 | <0.001 | ||
| Blood flow distribution (%) | Non-operative | r | –0.634 | 0.471 | 0.540 |
| P | 0.002 | 0.042 | 0.017 | ||