Quantification of left ventricular trabeculae using fractal analysis

Table 1 Clinical characteristics of the 135 subjects, by population studied

Variable	LVNC Cases	Healthy whites	Healthy blacks
Variable	(n 30= , ± s.d.)	(n= 75, ± s.d.)	(n= 30, ± s.d.)
Age (yrs)	41 ± 13	46 ± 16 (p = NS)	40 ± 11 (p = NS)
Male/Female	16/14	36/39 (p = NS)	15/15 (p = NS)
Weight (Kg)	80 ± 14	77 ± 14 (p = NS)	78 ± 19 (p = NS)
Height (cm)	172 ± 6	171 ± 11(p = NS)	169 ± 9 (p = NS)
BSA (m²)	1.9 ± 0.04	1.9 ± 0.03 (p = NS)	1.9 ± 0.05 (p = NS)
BMI (kg/m²)	27 ± 4	26 ± 4 (p = NS)	27 ± 6 (p = NS)
LVEDVi (mls/m²)	104 ± 49	74 ± 16 (p < 0.01)	73 ± 13 (p < 0.01)
EF (%)	52 ± 17	69 ± 4 (p < 0.001)	72 ± 8 (p < 0.001)
Max. Apical FD	1.392 ± 0.053	1.235 ± 0.03 (p < 0.00001*)	1.253 ± 0.025 (p < 0.00001†)
Variable	LVNC Cases	Healthy Whites	Healthy Blacks
Variable	(n = 20, ± s.d.)	(n = 20, ± s.d.)	(n = 20, ± s.d.)
NC/C Ratio‡	2.87 ± 0.94	1.37 ± 0.40 (p < 0.00001)	1.38 ± 0.48 (p < 0.00001)
Trab. Mass (% LV)§	33.35 ± 8.83	18.12 ± 5.72 (p < 0.00001)	20.05 ± 7.43 (p < 0.00001)

* Two-tailed p value for t, comparing FD between LVNC cases and healthy whites.
† Two-tailed p value for t, comparing FD between LVNC cases and healthy blacks.
‡ Results from the Petersen analysis. Two-tailed p value for t, comparing end-diastolic NC/C ratios between healthy volunteers and LVNC.
§ Results from the Jacquier analysis. Two-tailed p value for t, comparing trabeculated mass (% of LV) between healthy volunteers and LVNC.
BSA = body-surface area; BMI = body-mass index; C = compacted; EF = ejection fraction; FD = fractal dimension; LVEDi = left ventricular end-diastolic volume indexed to BSA; LVNC = left ventricular noncompaction; max. = maximal; NC = noncompacted; NS = not significant (after comparison with LVNC cases); s.d. = standard deviation; Trab. = trabeculated; Yrs = years.

ISSN: 1532-429X