Cadernos de Saúde Pública | |
Validity of pre and post-term birth rates based on the date of last menstrual period compared to early obstetric ultrasonography | |
Maria Nilza Lima Medeiros1  Nádia Carenina Nunes Cavalcante1  Fabrício José Alencar Mesquita1  Rosângela Lucena Fernandes Batista1  Vanda Maria Ferreira Simões1  Ricardo De Carvalho Cavalli1  Viviane Cunha Cardoso1  Heloisa Bettiol1  Marco Antonio Barbieri1  Antônio Augusto Moura Da Silva1  | |
关键词: Premature Birth; Gestational Age; Prenatal Ultrasonography; Menstruation; Nascimento Prematuro; Idade Gestacional; Ultrassonografia Prenatal; Menstruação; Nacimiento Prematuro; Edad Gestacional; Ultrasonografia Prenatal; Mestruación; | |
DOI : 10.1590/0102-311X00121514 | |
来源: SciELO | |
【 摘 要 】
The aim of this study was to assess the validity of the last menstrual period (LMP) estimate in determining pre and post-term birth rates, in a prenatal cohort from two Brazilian cities, São Luís and Ribeirão Preto. Pregnant women with a single fetus and less than 20 weeks' gestation by obstetric ultrasonography who received prenatal care in 2010 and 2011 were included. The LMP was obtained on two occasions (at 22-25 weeks gestation and after birth). The sensitivity of LMP obtained prenatally to estimate the preterm birth rate was 65.6% in São Luís and 78.7% in Ribeirão Preto and the positive predictive value was 57.3% in São Luís and 73.3% in Ribeirão Preto. LMP errors in identifying preterm birth were lower in the more developed city, Ribeirão Preto. The sensitivity and positive predictive value of LMP for the estimate of the post-term birth rate was very low and tended to overestimate it. LMP can be used with some errors to identify the preterm birth rate when obstetric ultrasonography is not available, but is not suitable for predicting post-term birth.
【 授权许可】
CC BY
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
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RO202005130091943ZK.pdf | 70KB | download |