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Fundal height

Fundal height, or MacDonald's rule, is a measure of the size of the uterus used to assess fetal growth and development. It is measured from the top of the pubic bone to the top of the uterus in centimeters. It should match the fetus' gestational age in weeks within 1 to 3 cm, e.g., a pregnant woman's uterus at 22 weeks should measure 19 to 25 cm.

A shorter measure can happen for one of the following reasons:

On the other side, a longer measure can be caused by:

As a pregnancy approaches its end, the fundal height will become less accurate.

It is very important that the patient's fundal height be measured and properly recorded by their OB/GYNE or midwife on every prenatal visit. Measuring the fundal height is an indicator of proper fetal growth and amniotic fluid development.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Fundal_height". A list of authors is available in Wikipedia.
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