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 B
Explanation
Choice A reason:
Covering the cord with a sterile, moist saline dressing can help to maintain the cord's viability by preventing drying and possible infection. However, this action does not address the immediate concern of relieving pressure on the cord to restore fetal circulation.
Choice B reason:
Placing the client in the knee-chest position is the most immediate and critical action to take. This position helps to relieve pressure on the prolapsed cord, which is vital to prevent compression of the cord and maintain blood flow to the fetus. It is a recommended emergency intervention for umbilical cord prolapse.
Choice C reason:
Inserting a gloved hand into the vagina to relieve pressure on the cord is a measure that may be taken by a healthcare provider in the event of a cord prolapse. However, it is not the first action to be performed. The initial step is to change the mother's position to relieve pressure on the cord.
Choice D reason:
Preparing the client for an immediate birth is necessary because umbilical cord prolapse is an obstetric emergency that requires prompt delivery, often by cesarean section, to prevent fetal hypoxia. However, the very first action is to relieve pressure on the cord to restore fetal oxygenation while preparations for delivery are made.
Correct Answer is D
Explanation
Choice a reason:
The pattern of contractions can be a sign of true labor when they are regular, frequent, and increase in intensity and duration over time. In true labor, contractions do not subside with rest or hydration and become progressively more organized. However, contractions alone can be misleading, as Braxton Hicks contractions may also present a pattern but do not lead to cervical changes.
Choice b reason:
The station of the presenting part refers to the position of the baby's head (or presenting part) in relation to the ischial spines of the mother's pelvis. While the station can indicate how far labor has progressed, it is not a definitive sign of true labor. The station changes as labor progresses, but it can also be affected by other factors such as the baby's position.
Choice c reason:
Rupture of the membranes, commonly known as water breaking, can occur before or during labor. While it is a sign that labor may be imminent, it does not confirm true labor. Some women may experience premature rupture of membranes without contractions or cervical changes.
Choice d reason:
Changes in the cervix, including effacement (thinning) and dilation (opening), are the most reliable signs of true labor. Effacement is measured in percentages, and dilation is measured in centimeters. The cervix must be 100% effaced and dilated to 10 centimeters for childbirth to occur. These changes are a direct result of true labor contractions and indicate that the body is preparing for delivery.
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