Table 4.

Linear regression of transverse and longitudinal parameters, and RVEF in PH patients.

	level	R2
Transverse movements
fractional-SFD	apex-1	0.30*
	2	0.39*
	3	0.55*
	mid-4	0.70*
	5	0.66*
	6	0.51*
	base-7	0.32*
SFD	apex-1	0.30*
	2	0.35*
	3	0.48*
	mid-4	0.62*
	5	0.55*
	6	0.37*
	base-7	0.17*
Longitudinal movements
fractional-TAAD	-	0.27*
TAPSE	-	0.21*
RV area change
AC	-	0.25*
fractional-AC	-	0.76*

Data are determined in PH patients only. Values are mean. RV area change (AC) and fractional AC are determined in 4-chamber view.

* Significantly lower compared to control subjects (P < 0.001).