Assessments of M-mode color echocardiography on fetal right ventricular diastolic function with umbilical cord around neck

OBJECTIVE: To investigate the fetal right ventricular diastolic function under the condition of umbilical cord around neck (UCAN), and analyze the changes of the right ventricular propagation velocity (Vp), then discuss the clinical value of the color M-mode echocardiography in the evaluation of fetal ventricular diastolic function quantitatively.

PATIENTS AND METHODS: All patients enrolled were with singleton pregnancy from Cangzhou Central Hospital from December 2013 to December 2015 as the experimental group. The control group consisted of normal fetuses without UCAN and the experimental group consisted of the fetuses with UCAN. Besides, this paper analyzed values of Tei index of the left and right ventricle as well as Vp of the right ventricle diastole using color M-mode echocardiography.

RESULTS: The Vp values of the experimental group were significantly lower than those of the control group (p < 0.05); the Tei index of the right ventricle of the experimental group was significantly higher than that of the control group (p < 0.05); the Tei indexes of the left and right ventricles of the experimental group had no statistical difference (p > 0.05). The heart function and the right ventricular diastolic function were reduced in fetuses with UCAN; however, the effect of the left and the right ventricular diastolic function had no significant changes in fetuses with UCAN.

CONCLUSIONS: It had great significance to select the appropriate index of cardiac function for estimating the right ventricular diastolic function and the whole heart function of UCAN, and it is of huge practical application value in clinical practice.

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