Speckle tracking echocardiography-determined measures of global and regional left ventricular function correlate with functional capacity in patients with and without preserved ejection fraction

Table 2 Correlation of speckle tracking echocardiography (STE) measures of global left ventricular function with DASI score of functional status

STE variable	Correlation of STE variable with DASI	P value	N	Correlation of EF with DASI in same subjects	P value
Global Circ. Strain	–0.48	0.002	39	0.51	0.001
Global Rad. Strain	0.68	<0.001	32	0.58	0.001
Global Long. Strain	–0.57	0.002	26	0.51	0.008
LV Twist	0.33	0.07	31	0.66	<0.001

Abbreviations: Circ. circumferential; DASI Duke Activity Status Index, EF ejection fraction, Long. longitudinal, LV left ventricular, Rad. radial, STE speckle tracking echocardiography.

ISSN: 1476-7120