Time-Dependent Regional Myocardial Strains in Patients with Heart Failure with a Preserved Ejection Fraction

Table 5

Time to reach peak systole (entire cardiac cycle length 1.0 as in Figure 6, e.g.). At each location, the normalized control was compared with HFpEF.

	Base		Mid		Apex
	% cardiac cycle ± std. dev.	value	% cardiac cycle ± std. dev.	value	% cardiac cycle ± std. dev.	value
Longitud. strain
Endo
Normalized control	0.450 ± 0.014	<0.001	0.404 ± 0.013	<0.001	0.404 ± 0.013	<0.001
HFpEF	0.525 ± 0.012		0.442 ± 0.013		0.442 ± 0.013
Epi
Normalized control	0.451 ± 0.014	<0.001	0.403 ± 0.013	<0.001	0.403 ± 0.013	<0.001
HFpEF	0.485 ± 0.012		0.485 ± 0.012		0.495 ± 0.012
Circumfer. strain
Endo
Normalized control	0.404 ± 0.013	0.604	0.403 ± 0.014	0.739	0.404 ± 0.014	0.507
HFpEF	0.401 ± 0.013		0.401 ± 0.013		0.400 ± 0.013
Epi
Normalized control	0.404 ± 0.013	0.604	0.350 ± 0.010	<0.001	0.404 ± 0.014	0.507
HFpEF	0.401 ± 0.013		0.401 ± 0.013		0.400 ± 0.013
Rotation
Endo
Normalized control	0.399 ± 0.107	0.001	0.439 ± 0.097	0.260	0.390 ± 0.084	0.007
HFpEF	0.591 ± 0.125		0.493 ± 0.116		0.565 ± 0.171
Epi
Normalized control	0.436 ± 0.079	0.014	0.443 ± 0.101	0.483	0.408 ± 0.096	0.017
HFpEF	0.556 ± 0.122		0.473 ± 0.090		0.564 ± 0.171