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      Single pre-delivery symphysis-fundal height measurement as a predictor of birthweight and multiple pregnancy.

      British journal of obstetrics and gynaecology
      Adolescent, Adult, Birth Weight, Body Height, False Positive Reactions, Female, Humans, Maternal Mortality, Middle Aged, Pelvimetry, methods, Pregnancy, Pregnancy, Multiple, Pubic Symphysis, anatomy & histology, Twins

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          Abstract

          To compare the value of different pre-delivery maternal indices for predicting birthweight, and to examine the usefulness of a single pre-delivery symphysis-fundal height measurement for the detection of low birthweight and twin pregnancy or macrosomia. Symphysis-fundal height measurements were gathered from 1509 women who had both a singleton delivery and available data of pre-delivery weight, height and mid-upper arm circumference, and from 73 women who had a twin delivery. A district hospital in rural Tanzania. Symphysis-fundal height, pre-delivery weight and mid-upper arm circumference, respectively, explain 41%, 13% and 4% of the observed variation in birthweight. At a cut-off level of 30 cm for symphysis-fundal height, the detection rate for birthweight below 2500 g and 2000 g was 66% and 68%, respectively, and the false positive rate was 9% and 14%, respectively. At a cut-off level of 38 cm for symphysis-fundal height the detection rate for twin pregnancy or birthweight > or = 4000 g was 76%, and the false positive rate was 4%. Symphysis-fundal height was a better predictor of birthweight than maternal height, pre-delivery weight or mid-upper arm circumference. It seems justified to investigate the value of a simple tricoloured symphysis-fundal height measuring tape for use in antenatal care in developing countries at village level.

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