Key result
Maternal body mass index and crown-rump length did not significantly interfere with fetal cardiac assessment in the first trimester, except for a higher failure rate in vaginal assessment using B mode with color Doppler associated with larger crown-rump length (p<0.01).
Why the study?
Do crown-rump length and maternal body mass index influence the success of fetal heart sonographic assessment in the first trimester?
Cross-Sectional (n=53)
Yes
Do crown-rump length and maternal body mass index influence the success of fetal heart sonographic assessment in the first trimester?
p-value: p=<0.01
Maternal body mass index and fetal crown-rump length do not interfere with the success of sonographic fetal cardiac assessment in the first trimester.
Maternal BMI and CRL largely do not affect first-trimester fetal cardiac assessment success; leaves open technical factors in vaginal B-mode Doppler for larger fetuses.
OBJECTIVE: To evaluate the influence of the crown-rump length and body mass index on sonographic evaluation of the fetal heart using abdominal and vaginal routes in the first trimester of pregnancy. METHODS: We conducted a cross-sectional study with 57 pregnant women between 12-14 weeks (CRL< 84 mm). We evaluated the following fetal cardiac plans using the abdominal and vaginal routes: four-chamber view, right ventricle outflow tract, left ventricle outflow tract and aortic arch. We used the B-mode, color Doppler and four-dimensional ultrasonography (spatio-temporal image correlation). To evaluate the influence of crown-rump length and body mass index in the assessment of fetal cardiac planes, we used the t test unpaired. RESULTS: There were no statistically significant differences in the rates of success and failure between abdominal and vaginal routes in relation to body mass index, however, there was a higher failure rate in vaginal assessment using B mode associated with color Doppler (P<0.01). CONCLUSION: The crown-rump length and body mass index had no interference in fetal cardiac assessment in the first trimester of pregnancy.
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Pares et al. (2013) conducted a cross-sectional in Healthy pregnancy (n=53). Maternal body mass index and crown-rump length was evaluated on Influence of crown-rump length and body mass index on the success of sonographic evaluation of the fetal heart (p=<0.01). Maternal body mass index and crown-rump length did not significantly interfere with fetal cardiac assessment in the first trimester, except for a higher failure rate in vaginal assessment using B mode with color Doppler associated with larger crown-rump length (p<0.01).
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