Feasibility, reproducibility and diagnostic usefulness of right ventricular strain by 2-dimensional speckle-tracking echocardiography in ARDS patients: the ARD strain study

Annals of Intensive Care

Table 2 Echocardiography parameters in ARDS patients

Parameters	ARDS cohort (n = 48)	D28 ARDS survivors (n = 36)	D28 ARDS Non-survivors (n = 12)	Comparison survivors vs non-survivors
RV STE-derived parameters
RV inferior LSS%	− 19.2 ± 7.0	− 19.1 ± 6.6	− 19.8 ± 8.2	0.76
RV lateral LSS%	− 19.9 ± 6.4	− 20.3 ± 6.1	− 18.7 ± 7.5	0.49
RV septal LSS%	− 13.9 ± 4.1	− 13.9 ± 3.6	− 13.6 ± 5.3	0.80
RV global LSS%	− 17.7 ± 4.9	− 17.7 ± 4.5	− 17.4 ± 6.0	0.82
RV global LSR s⁻¹	− 1.37 ± 0.46	− 1.36 ± 0.45	− 1.39 ± 0.52	0.87
RV conventional parameters
TAPSE mm	18.7 ± 5.0	19.6 ± 4.7	15.8 ± 5.0	0.02
RV FAC%	39.5 ± 9.2	39.5 ± 9.0	39.4 ± 9.6	0.98
S’ cm s⁻¹	12.7 ± 5.4	13.2 ± 5.9	11.1 ± 3.3	0.13
LV parameters
LVEF (Simpson’s method)%	55.2 ± 11.6	56.8 ± 11.5	50.0 ± 10.7	0.09
Cardiac output l min⁻¹	5.7 ± 1.8	5.8 ± 1.5	5.4 ± 2.7	0.61
E/e’	8.2 ± 2.9	8.2 ± 2.7	8.1 ± 3.5	0.97

Mean ± standard deviation
Italic font indicates significant difference (p < 0.05)
RV/LV right/left ventricle, STE speckle-tracking echocardiography, LSS longitudinal systolic strain, LSR longitudinal systolic strain rate, TAPSE tricuspid annular plane systolic excursion, FAC fractional area change, S′ peak systolic velocity of tricuspid annulus by pulsed wave Doppler tissue imaging, EF ejection fraction, E/e′ ratio between early mitral inflow velocity and mitral annular early diastolic velocity