New concept of myocardial longitudinal strain reserve assessed by a dipyridamole infusion using 2D-strain echocardiography: the impact of diabetes and age, and the prognostic value

Table 4 Echocardiographic parameters according to diabetic status

Echocardiographic parameters	All patients (n=63)	Diabetic (n=28)	Non-diabetic (n=35)	*p-value*
Rest
LVEF (%)	50.7±14.4	49.8±13.0	51.4±15.5	0.66
EDV (ml)	103.7±46.9	106.7±46.6	101.2±47.6	0.65
ESV (ml)	53.7±39.4	56.6±36.7	51.3±41.8	0.60
TVI LVOT (cm)	22.7±6.0	19.3±5.0	19.3±5.5	0.96
GLS (%)	−14.5±4.2	−13.9±3.7	−15.0±4.5	0.30
Longitudinal Strain rate (s^-1)	−1.19±0.35	−1.15±0.26	−1.22±0.40	0.43
E (cm.s^-1)	77±25	78±26	75±25	0.60
A (cm.s^-1)	81±29	79±28	82±29	0.77
E/A (cm.s^-1)	1.07±0.58	1.14±0.57	1.01±0.59	0.41
DT (s)	205±86	197±88	210±85	0.56
Stress
LVEF (%)	54.6±13.9	54.3±14.0	54.9±13.9	0.89
EDV (ml)	98.8±41.6	98.8±36.3	98.9±45.9	0.99
ESV (ml)	48.8±35.6	48.6±31.6	48.9±38.9	0.97
TVI LVOT (cm)	22.7±6.0	23.0±5.0	22.5±6.8	0.76
GLS (%)	−16.8±4.5	−17.2±4.2	−16.5±4.8	0.55
Longitudinal Strain rate (s^-1)	−1.34±0.44	−1.33±0.52	−1.35±0.37	0.86
E (cm.s^-1)	84±23	83±23	85±23	0.75
A (cm.s^-1)	89±33	88±32	89±35	0.85
E/A (cm.s^-1)	1.13±0.77	1.15±0.61	1.10±0.89	0.83
DT (s)	179±73	177±76	180±71	0.87
∆ (stress – rest)
∆ LVEF (%)	3.9±8.4	4.6±9.8	3.5±7.2	0.60
∆ EDV (ml)	−4.8±25.3	−7.9±30.0	−2.3±20.9	0.39
∆ ESV (ml)	−4.9±20.5	−8.0±24.1	−2.4±17.0	0.28
∆ TVI LVOT (cm)	3.4±2.5	3.7±2.6	3.2±2.3	0.39
LSR (%)	−2.28±2.19	−3.27±1.93	−1.49±2.08	*0.001*
LSRR (s^-1)	−0.15±0.34	−0.17±0.43	−0.12±0.26	0.57

LVEF = left ventricle ejection fraction; EDV = end diastolic volume; ESV = end systolic volume, TVI LVOT = time-velocity integral in the left ventricular outflow tract, GLS = global longitudinal strain; DT = mitral deceleration time, LSR = longitudinal strain reserve; LSRR = longitudinal strain rate reserve.

ISSN: 1475-2840