<P> Fundal height , or McDonald 's rule , is a measure of the size of the uterus used to assess fetal growth and development during pregnancy . It is measured from the top of the mother 's uterus to the top of the mother 's pubic symphysis . Fundal height , when expressed in centimeters , roughly corresponds to gestational age in weeks between 16 and 36 weeks for a vertex fetus . When a tape measure is unavailable , finger widths are used to estimate centimeter ( week ) distances from a corresponding anatomical landmark . However , landmark distances from the pubic symphysis are highly variable depending on body type . In clinical practice , recording the actual fundal height measurement from the palpable top of the uterus to the superior edge of the pubic symphysis is standard practice beginning around 20 weeks gestation . </P>
<P> Fundal height , or McDonald 's rule , is a measure of the size of the uterus used to assess fetal growth and development during pregnancy . It is measured from the top of the mother 's uterus to the top of the mother 's pubic symphysis . Fundal height , when expressed in centimeters , roughly corresponds to gestational age in weeks between 16 and 36 weeks for a vertex fetus . When a tape measure is unavailable , finger widths are used to estimate centimeter ( week ) distances from a corresponding anatomical landmark . However , landmark distances from the pubic symphysis are highly variable depending on body type . In clinical practice , recording the actual fundal height measurement from the palpable top of the uterus to the superior edge of the pubic symphysis is standard practice beginning around 20 weeks gestation . </P>
when does fundal height correlate with gestational age
when does fundal height correlate with gestational age
between 16 and 36 weeks
between 16 and 36 weeks