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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.
An ultrasound showing an embryo measured to have a crown-rump length of 1.67 cm and estimated to have a gestational age of 8 weeks and 1 day. Crown-rump length (CRL) is the measurement of the length of human embryos and fetuses from the top of the head (crown) to the bottom of the buttocks (rump).
Here's the formula to calculate your Estimated Due Date using Naegele's rule : Date of Last Menstrual Period + 7 Days + 9 Calendar Months = Date of Estimated Date of Delivery. Example: LMP = 8 May 2020 +1 year = 8 May 2021 −3 months = 8 February 2021 +7 days = 15 February 2021
Illustration of fundal height at various points during pregnancy Some degree of weight gain is expected during pregnancy. The enlarging uterus, growing fetus, placenta , amniotic fluid , normal increase in body fat, and increase in water retention all contribute weight gain during pregnancy.
After the 20th week of pregnancy, the mother would need to visit the doctor for the measurement of fundal height, which is the length from the top portion of the uterus to the pubic bone. [24] The length measured in centimeters should correspond to the number of weeks that the mother has been pregnant. [24]
On every prenatal visit, the obstetrician, gynaecologist or midwife should measure the patient's fundal height with a tape measure. It is important that the fundal height be measured and properly recorded to track proper fetal growth and the increasing development of amniotic fluid.
The mean pregnancy length has been estimated to be 283.4 days of gestational age as timed from the first day of the last menstrual period and 280.6 days when retrospectively estimated by obstetric ultrasound measurement of the fetal biparietal diameter (BPD) in the second trimester. [12]
The postpartum period can be divided into three distinct stages; the initial or acute phase, 8–19 hours after childbirth; subacute postpartum period, which lasts two to six weeks, and the delayed postpartum period, which can last up to six months. [5] In the subacute postpartum period, 87% to 94% of women report at least one health problem.