Table 3. Right-side heart function on the echocardiography in the four pneumonectomy patients.
| Echocardiographic finding | Case 1* | Case 2 | Case 3 | Case 4 |
|---|---|---|---|---|
| Preoperative evaluation | ||||
| TR | Mild | – | Mild | – |
| TR-PG (mmHg) | 44 | NA | 21 | NA |
| PR | NA | – | – | Mild |
| IVC diameter (mm) | 10 | 6 | 6 | 10 |
| Respiratory variation in IVC diameter | + | – | + | + |
| Postoperative evaluation | ||||
| Time after surgery | 3 weeks | 35 months | 1 month | |
| TR | Mild | Mild | Trivial | |
| TR-PG (mmHg) | 39 | 40 | 21 | |
| PR | – | Mild | – | |
| AcT/ET | 0.28 | 0.27 | NA | |
| IVC diameter (mm) | 15 | NA | 20 | |
| Respiratory variation in IVC diameter | ± | + | + |
*, hospital mortality case; +, yes; −, no. TR, tricuspid regurgitation; TR-PG, tricuspid regurgitation pressure gradient; PR, pulmonic regurgitation; IVC, inferior vena cave; AcT, acceleration time; ET, ejection time; NA, not available.