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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.
[1] [2] [3] Macrosomia is a similar term that describes excessive birth weight, but refers to an absolute measurement, regardless of gestational age. [4] Typically the threshold for diagnosing macrosomia is a body weight between 4,000 and 4,500 grams (8 lb 13 oz and 9 lb 15 oz), or more, measured at birth, but there are difficulties reaching a ...
Peak uterine pressure amplitudes were 50 mmHg; during the 10 minute period of measurement 3 contractions occurred; subtract the resting tone from the peak intensity of the contraction; add the 3 contractions together to get the MVUs; Montevideo units are calculated by obtaining the peak uterine pressure amplitude and subtracting the resting tone.
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).
The most drastic change in the uterus is the contraction from an organ weighing one kilogram and a volume of about 10 litres down to a 60 gram organ that only contains 5 ml of fluid. [7] Immediately after delivery, the fundus of the uterus begins to contract.
The uterus is located in the middle of the pelvic cavity, in the frontal plane (due to the broad ligament of the uterus). The fundus does not extend above the linea terminalis, while the vaginal part of the cervix does not extend below the interspinal line. The uterus is mobile and moves posteriorly under the pressure of a full bladder, or ...
The midwife does regular assessments for uterine contraction, fundal height, [17] and vaginal bleeding. [18] Throughout labor and delivery the mother's vital signs (temperature, blood pressure, and pulse) are closely monitored and her fluid intake and output are measured. The midwife also monitors the baby's pulse rate, palpates the mother's ...
Normal weight at term delivery is 2,500–4,200 g (5 lb 8 oz – 9 lb 4 oz). [citation needed] SGA is not a synonym of low birth weight, very low birth weight, or extremely low birth weight. For example, with a 35-week gestational age delivery, a weight of 2,250 g (4 lb 15 oz) is appropriate for gestational age but is still low birth weight.