VECTORCARDIOGRAPHIC STUDIES ON PREGNANT WOMEN WITH SPECIAL REFERENCE TO THE EFFECT OF POSTURAL CHANGES

Abstract

Frank lead vectorcardiograms (VCGs) were recorded in 81 women between the age of 21 and 35 years during the course of uncomplicated pregnancy. No consistent changes were observed in the VCGs recorded in 6th and 8th month as compared with those recorded in 4th month. The changes of the VCGs following the postural changes during pregnancy were almost the same as in nonpregnant cases except a slightly greater lengthening of the maximum T vectors in left lateral position in 8th month. Brody effect was thought not to be playing important roles in postural changes of VCGs.