Concordância entre a percepção materna dos movimentos fetais e a visualização pela ultrassonografia

Abstract

PURPOSE: To determine the agreement between maternal perception of fetal movements and the movements recorded simultaneously by ultrasound in low-risk pregnancies. METHODS: Twenty pregnant women were evaluated with the following inclusion criteria: single pregnancy, alive fetus, maternal age between 18 and 35 years; between 36 and 40 weeks gestation; normal fetal morphology at ultrasound, and absence of maternal comorbidities. The pregnant women were evaluated for 10 minutes, during which cardiotocography was used to record fetal movements triggered with the event marker, with the paper speed set at 3 cm/min. At the same time, fetal movements were observed by ultrasonography. RESULTS: The kappa index for interobserver agreement analysis was 0.62, showing good agreement (95%CI 0.45-0.79). The intraclass correlation coefficient was 0.82 (95%CI 0.61-0.92). Analysis by the Bland & Altman graph indicated good agreement. A linear regression analysis showed a significant correlation between maternal perception (x) and ultrasound (y) observation (r 2=0.71, p<0.001; equation: y=5.31+0.66x). CONCLUSIONS: The agreement between ultrasound and maternal perception of fetal movement is good, allowing the use of fetal movement counting in the assessment of fetal wellbeing.