First Trimester Scan: “Pyramid of Priorities” of the Brazilian Reality - Revista Brasileira de Ginecologia e Obstetrícia

The assessment of nuchal translucency (NT) and other markers for chromosomal disorders in the first trimester scan has been overvalued in Brazil, while the assessment of the crown-rump length (CRL) and early morphology are not given the same attention. The contribution of these markers to the antenatal care routine is evident. Similarly, the contribution of the inverted “pyramid” of care proposed by Nicolaides has been valuable in prenatal care, demonstrating the importance of ultrasound parameters in the first trimester of pregnancy.

Parallel to the pyramid proposed by Nicolaides, we propose a new “pyramid of priorities” including ultrasound for morphological findings in the first trimester ().

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