A nurse in a prenatal clinic is caring for a client who is pregnant and asks the nurse for her estimated date of birth (EDB). The client's last menstrual period began on July 27. What is the client's EDB? (State the date in MMDD format. For example, July 27 is 0727.)
The Correct Answer is ["0504"]
To calculate the estimated date of birth (EDB), also known as the due date, we use Naegele's Rule, which involves adding one year, subtracting three months, and adding seven days to the first day of the last menstrual period (LMP). Using this rule, if the LMP was on July 27, the EDB would be:
- Add one year: July 27, 2024
- Subtract three months: April 27, 2024
- Add seven days: May 4, 2024
Therefore, the EDB in MMDD format is 0504.
Reason:
Naegele's Rule is a standard way of calculating the due date for a pregnancy. The rule estimates the expected date of delivery (EDD) by adding one year, subtracting three months, and adding seven days to the date of a woman's last menstrual period (LMP). This calculation assumes a regular menstrual cycle of 28 days and ovulation occurring on the 14th day of the cycle. The EDB is typically set at 40 weeks from the LMP, which is approximately 280 days. While this method provides an estimate, only about 4% of births occur on the exact due date, and most births occur within a range of two weeks before or after the estimated due date.
It's important to note that the EDB is an estimate and can be influenced by factors such as the length of menstrual cycles, the exact day of ovulation, and the date of conception. Ultrasounds and other prenatal tests can provide additional information to refine the due date estimate as the pregnancy progresses.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice a reason:
Slightly below the umbilicus is not the expected location for the fundus at 22 weeks of gestation. Typically, the fundus is located at the level of the umbilicus at 20 weeks and rises about 1 cm above the umbilicus each week thereafter.
Choice b reason:
3 cm above the umbilicus would be more consistent with a gestational age of approximately 23 weeks, as the fundus rises approximately 1 cm per week after reaching the level of the umbilicus at 20 weeks.
Choice C rationale: At 22 weeks of gestation, the fundus is typically located slightly above the umbilicus. The uterus has grown sufficiently by this stage to reach this position, aligning with the expected fundal height measurements. This corresponds with normal pregnancy progression, as fundal height in centimeters is expected to approximate the gestational age in weeks.
Choice D rationale: By 22 weeks of gestation, the fundus has already risen above the umbilicus, so palpating the fundus 3 cm below the umbilicus is inconsistent with normal pregnancy progression. Earlier in pregnancy, such as around 16 to 18 weeks, the fundus might be found below the umbilicus, but this does not apply at 22 weeks.
Correct Answer is B
Explanation
Choice A reason:
Initiating pushing in a client with suspected placenta previa is contraindicated. Placenta previa is a condition where the placenta covers the cervix, and pushing could lead to severe bleeding and compromise both the mother and the fetus. The normal labor process involves pushing only after full cervical dilation, and in the case of placenta previa, this could exacerbate the condition.
Choice B reason:
Preparation for cesarean birth is the correct action when placenta previa is suspected. With placenta previa, vaginal delivery could cause significant hemorrhage due to the placenta's position over the cervical opening. A cesarean birth bypasses the cervix, thereby avoiding disruption of the placenta and preventing excessive bleeding.
Choice C reason:
Magnesium sulfate is used in obstetrics to prevent seizures in preeclampsia and to delay preterm labor, not for placenta previa. While it is important to manage the client's overall condition, magnesium sulfate would not address the immediate concern of potential hemorrhage due to placenta previa.
Choice D reason:
An examination to determine cervical status in the presence of placenta previa should be avoided unless absolutely necessary and performed under controlled conditions, such as in an operating room where a cesarean delivery can be performed if needed. Digital cervical examinations can dislodge the placenta and cause bleeding.
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