PEEP (cmH2O) | PEEP 0 | PEEP 5 | PEEP 10 | PEEP 15 | PEEP 20 | PEEP 25 | PEEP 30 |
|---|
RV EDA (cm2) | 11 ± 3 | 11 ± 2 | 11 ± 1 | 10 ± 2 | 10 ± 1 | 13 ± 2 | 13 ± 1 |
RV FAC (%) | 44 ± 6 | 42 ± 7 | 36 ± 6 | 32 ± 7 | 26 ± 7*⌘ | 22 ± 4*⌘ | 20 ± 9*⌘ |
RVfwS (%) | −21.5 ± 3 | −18.2 ± 3 | −13.7 ± 4* | −11.3 ± 3*⌘ | −9.0 ± 4*⌘ | −7.8 ± 4*⌘ | −6.9 ± 3*⌘ |
RVfwSR (−1) | −1.6 ± 0.3 | −1.3 ± 0.2 | −1.0 ± 0.2* | −0.9 ± 0.2* | −0.8 ± 0.3*⌘ | −0.6 ± 0.3*⌘ | −0.7 ± 0.2*⌘ |
RVfwSRe (−1) | 1.7 ± 0.2 | 1.3 ± 0.3 | 1.2 ± 0.3* | 0.9 ± 0.3* | 0.7 ± 0.3*⌘ | 0.5 ± 0.2*⌘§ | 0.6 ± 0.2*⌘§ |
- RV: right ventricle; EDA: end-diastolic area; FAC: fractional area change; RVfwS: right ventricle free wall longitudinal strain; RVfwSR: right ventricle free wall longitudinal free wall strain rate; RVfwSRe: right ventricle free wall longitudinal early strain rate relaxation. NB: RVfwS and RVfwSR are systolic function parameters and are expressed as negative values: the less negative a value, the better the function. RVfwSRe is a diastolic function parameter and expressed as a positive value: the more positive, the better the relaxation function. *indicates significant difference (p < 0.002) compared with PEEP 0 cmH2O. ⌘indicates significant difference compared with PEEP 5 cmH2O. §indicates significant difference compared with PEEP 10 cmH2O.
