Table 7. Correlation coefficients between interleukin-6 levels and right-sided echocardiographic parameters.

Parameters	Whole study group	Controls	GH	PE	GH + PE
Ind RA volume	0.133	0.024	0.253	0.178	0.199
EDA	0.071	0.097	-0.121	0.110	-0.001
ESA	0.120	0.286*	-0.058	-0.046	-0.066
Ind EDA	-0.058	-0.249	-0.106	0.203	0.067
Ind ESA	-0.004	0.022	-0.010	-0.036	-0.029
FAC	-0.139	-0.389*	-0.146	0.325*	0.072
TAPSE	0.021	-0.046	0.008	0.255	0.114
TV E	-0.020	0.010	0.136	-0.248	-0.050
TV E-DT	-0.046	0.031	-0.313	0.002	-0.152
TV E/A	-0.034	0.001	0.134	-0.159	0.007
TV e'	-0.033	-0.052	0.157	0.125	0.112
TV E/e'	-0.021	-0.010	-0.007	-0.367*	-0.168
TV e'la'	-0.018	0.049	0.023	-0.020	-0.024
TV S wave	-0.052	0.057	0.049	-0.122	-0.026
RV GLS	0.147	0.139	0.078	-0.094	-0.019
AT of PV	-0.016	-0.074	0.106	-0.052	0.040

*p < 0.05, **p < 0.01, ***p < 0.001,

GH: gestational hypertension; PE: pre-eclampsia; Ind: indexed to BSA; RA: right atrial; EDA: end-diastolic area of the right ventricle; ESA: end-systolic area of the right ventricle; FAC: fractional area change of the right ventricle; TAPSE: tricuspid annular plane systolic excursion; TV E: peak velocity of early tricuspid inflow wave; TV E.DT: deceleration time of the E wave; TV E/A: the ratio between the peak velocities of the early and late tricuspid inflow waves; TV E–DT: peak early diastolic velocity of the tricuspid annulus; TV E/A: the ratio of the E wave of the tricuspid flow and the e′of the tricuspid annulus; TV e′/a′: the ratio between the peak velocities of the early and late velocities of the tricuspid annulus; TV S wave: peak systolic velocity of the tricuspid annulus; RV GLS: global longitudinal strain of the right ventricle (free wall); AT of PV: acceleration time of the pulmonary valve.