Systolic Function

The Left Ventricular

Each echocardiogram is an evaluation of the LV dimensions, wall thicknesses and function.

There has to be conducted several (read: different) measurements to be a good estimate of LV function.

Left ventricular systolic function

Left ventricular function

	Women				Men
	Reference range	Mildly abnormal	Moderately abnormal	Severely abnormal	Reference range	Mildly abnormal	Moderately abnormal	Severely abnormal
Linear method
Wallmotion score index	1.0	1.0-1.5	1.5-2.0	<2.0	1.0	1.0-1.5	1.5-2.0	<2.0
Endocardial fractional shortening, %	27-45	22-26	17-21	≤16	25-43	20-24	15-19	≤14
Midwall fractional shortening, %	15-23	13-14	11-12	≤10	14-22	12-13	10-11	≤10
2D Method
Ejection fraction, %	≥55	45–54	30–44	<30	≥55	45–54	30–44	<30
Doppler Method
Myocard performance index	<0.40				<0.40
dP/dt	>1100			<500	>1100			<500
Bold values: Recommended and best validated.1 Click here for ejection fraction determination by Teichholz 'formula Click here for calculating dP/dt Click here for calculation myocardial performance index Click here to calculate fractional shortening.

References

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1. 1 pmid=16458610
2. 2 pmid=19356538

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