Assessment of fetal left ventricular function in pregnancies with Anti-Ro/SSA or Anti-La/SSB antibodies using velocity vector imaging

Figures

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  Fig. 1. Left ventricular diastolic velocity vector imaging of a fetus in the control group. Control group: An equal number of fetuses from the control group were selected based on statistical matching of gestational age with those in the study group

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  Fig. 2. Bar chart showing comparison of global systolic and diastolic peak velocities of left ventricle between the study group and control group As seen in the figure, the systolic and diastolic peak velocities of left ventricle in the study group were lower than those in the control group (P < 0.05)

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  Fig. 3. Bar chart showing comparison of peak strain of left ventricle between the study group and control group As seen in the figure, the peak strain of left ventricle in the study group was lower than that in the control group (P < 0.05)

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  Fig. 4. Bar chart showing comparison of systolic and diastolic peak strain rates of left ventricle between the study group and control group As seen in the figure, systolic and diastolic peak strain rates of left ventricle in the study group were lower than those in the control group (P < 0.05)

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  Fig. 5. Scatter diagram of the relationship between the global peak velocities of left ventricle in systolic period (A) and diastolic period (B) and the gestational weeks in the study group. As seen in (A), the global peak systolic velocity of left ventricle in the study group was correlated with gestational weeks (P < 0.05), the correlation coefficient r = 0.312, and the regression equation is: global systolic velocity of left ventricle = 0.349 + (0.023 × gestational weeks); as seen in (B), the global peak diastolic velocity of left ventricle in the study group was correlated with gestational weeks (P < 0.05), the correlation coefficient r = 0.329, and the regression equation is: global diastolic velocity of left ventricle = -0.245 + (-0.027 × gestational weeks)

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  Fig. 6. Scatter diagram of the relationship between the global peak velocities of left ventricle in systolic period (A) and diastolic period (B) and the gestational weeks in the control group. As seen in (A), the global peak systolic velocity of left ventricle in the control group was correlated with gestational weeks (P < 0.05), the correlation coefficient r = 0.328, and the regression equation was: global systolic velocity of left ventricle = 0.547 + (0.019 × gestational weeks); as seen in (B), the global peak diastolic velocity of left ventricle in the control group was correlated with gestational weeks (P < 0.05), the correlation coefficient r = 0.337, and the regression equation was: global diastolic velocity of left ventricle = -0.3 + (-0.031 × gestational weeks)