Table 1.

M-mode Measurements for Parasternal Short Axis Protocol

	Age (months)	IVS/d (mm)	LVID/d (mm)	LV PW/d (mm)	IVS/s (mm)	LVID/s (mm)	LV PW/s (mm)	% EF	% FS
NTG	3.5	0.764±0.017	4.20±0.08	0.635±0.019	1.165±0.040	2.72±0.10	1.000±0.035	64.5±1.5	35.0±1.1
PQ19	3.5	0.743±0.026	4.12±0.12	0.633±0.025	1.113±0.051‡	2.62±0.09	0.965±0.030	66.1±1.1	36.1±0.8
PQ83	3.5	0.714±0.018	4.24±0.09	0.603±0.019	1.081±0.040	2.76±0.09	0.910±0.045	64.4±1.4	34.9±1.0
NTG	5	0.776±0.035	4.10±0.08	0.684±0.029	1.234±0.043	2.58±0.07	1.016±0.019	67.3±1.1	37.0±0.8
PQ19	5	0.767±0.058	4.25±0.11	0.707±0.018	1.182±0.091	2.67±0.03	1.037±0.029	67.1±1.3	37.0±1.1
PQ83	5	0.836±0.039‡	4.30±0.08	0.701±0.035	1.238±0.047	2.97±0.12*	0.994±0.036	58.6±2.8*	31.3±1.8
NTG	6.5	0.801±0.037	4.11±0.08	0.650±0.016	1.189±0.054	2.58±0.07	1.004±0.016	67.6±1.3	37.3±1.0
PQ19	6.5	0.766±0.032	4.09±0.12	0.616±0.028	1.206±0.017	2.44±0.19	0.986±0.047	71.3±3.9	40.6±3.0
PQ83	6.5	0.706±0.033§	4.89±0.15*†‡§	0.530±0.019*†§	1.045±0.046§	3.98±0.17*†‡§	0.666±0.032*†‡§	37.3±5.2*†‡§	18.5±2.9*†‡§

M-mode measurements of the left ventricle from a parasternal long-axis view. Data are presented as the mean value±standard error. IVS/d = interventricular septal thickness during diastole; LVID/d = left ventricular internal dimension during diastole; LV PW/d = posterior wall thickness during diastole; IVS/s = interventricular septal thickness during systole; LVID/s = left ventricular dimension during systole; LV PW/s = posterior wall thickness during systole; %EF = ejection fraction; %FS = fractional shortening.

^*, significant difference vs NTG (P<0.05).

^†, significant difference vs PQ19 (P<0.05),

^‡, significant difference vs 3.5 months PQ83 (P<0.05),

^§, significant difference vs 5 months PQ83 (P<0.05) by two-way ANOVA with repeated measures.