Table 3.
SHAPE in the RV compared with the manometer catheter
| Catheter | SHAPE | Absolute Error | Percent Error | |
|---|---|---|---|---|
| Canine 1 | ||||
| RVSP (mmHg) | 22.2 ± 1.1 | 24.5 ± 1.1 | −2.3 | 10.4 |
| RVDmin pressure (mmHg) | 4.5 ± 1.0 | 5.4 ± 0.9 | −0.9 | 20.0 |
| RV relaxation (mmHg/s) | −154.1 | −155.2 | 1.2 | 0.8 |
| Canine 2 | ||||
| RVSP (mmHg) | 21.3 ± 0.6 | 21.3 ± 1.0 | 0.0 | 0.0 |
| RVDmin pressure (mmHg) | 4.2 ± 1.0 | 5.0 ± 0.7 | −0.8 | 19.0 |
| RV relaxation (mmHg/s) | −162.5 | −161.0 | −1.5 | 0.9 |
| Canine 3 | ||||
| RVSP (mmHg) | 20.2 ± 0.9 | 23.6 ± 0.6 | −3.4 | 16.8 |
| RVDmin pressure (mmHg) | 5.0 ± 0.1 | 5.3 ± 1.2 | −0.3 | 6.0 |
| RV relaxation (mmHg/s) | −113.1 | −118.6 | 5.5 | 4.9 |
| Canine 4 | ||||
| RVSP (mmHg) | 18.1 ± 0.3 | 21.2 ± 0.6 | −3.1 | 17.1 |
| RVDmin pressure (mmHg) | 3.5 ± 0.2 | 3.6 ± 1.2 | −0.1 | 2.9 |
| RV relaxation (mmHg/s) | −71.5 | −75.4 | 3.9 | 5.5 |
| Canine 5 | ||||
| RVSP (mmHg) | 30.2 ± 3.6 | 32.8 ± 2.8 | −2.6 | 8.6 |
| RVDmin pressure (mmHg) | 6.4 ± 0.9 | 8.2 ± 1.8 | −1.8 | 28.1 |
| RV relaxation (mmHg/s) | −162.2 | −168.1 | 5.9 | 3.6 |
Values are means ± 1 SD. RV relaxation corresponds to the late peak minus derivative of change in pressure over time. Errors are indicated as catheter values-subharmonic aided pressure estimation (SHAPE) values. Percent errors are calculated with respect to the catheter pressure values.