Comparability of M mode echocardiographic long axis and short axis left ventricular function derivatives.


M mode echocardiographic anteroposterior indexes of left ventricular function derived from long and short axis parasternal planes were compared in one hundred cases. In all the disease groups studied the paired values were within acceptable statistical limits of comparability and interchangeability; that is they were within two standard deviations of the mean difference in both directions. Values from either plane can usually be considered as being representative of the expected values for the individual.

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