Impact of the left anterior descending artery wrapping around the left ventricular apex on cardiac mechanics in patients with normal coronary angiography

The Egyptian Heart Journal

Table 2 Circumferential strain and strain rate at LV basal and apical segments

LV basal	LAD wrapping	LAD non-wrapping	P value	LV apex	LAD wrapping	LAD non-wrapping	P value
Circ ε_sys%
Mean basal	− 13.87 ± 4.0	− 13.5 ± 3.2	0.721	Mean apical	− 15.92 ± 4.5	− 13.78 ± 0.3	0.02
Circ SR_sys(s^-1)
Mean basal	− 1.14 ± 1.83	−0 .87 ± .19	0.533	Mean apical	− 1.25 ± 1.85	− 0.84 ± .13	0.000
Circ SR_e(s^-1)
Mean basal	0.96 ± .44	0.90 ± .25	0.564	Mean apical	1.09 ± 0.49	0.88 ± .18	0.000
Circ SR_a(s-¹)
Basal septum	0.49 ± .15	0.38 ± .082	0.005	Apical anterior	0.56 ± .27	0.44 ± .14	0.053
Basal anterior	0.52 ± .25	0.41 ± .19	0.067	Apico septal	0.58 ± .30	0.37 ± .10	0.005
Basal lateral	0.54 ± .23	0.38 ± .13	0.005	Apical lateral	0.5635 ± .29	0.39 ± .10	0.017
Basal inferior	0.53 ± .19	0.36 ± .09	0.000	Apical infer	0.64 ± .43	0.36 ± .073	0.007
Mean basal	0.74 ± 1.14	0.38 ± .08	0.0121	Mean apical	0.58 ± .52	0.39 ± .062	0.000

ɛ_sys peak systolic strain, SR_sys peak systolic strain rat, SR_e early diastolic strain rate, SR_a late diastolic strain rate