A woman arrives at the clinic for a pregnancy test. Her last menstrual period (LMP) was March 14, 2024. What is the client's expected date of birth (EDB)?
December 7, 2025
December 21, 2024
December 17, 2024
November 17, 2024
The Correct Answer is B
A. December 7, 2025: This date is over a year late, likely due to miscalculation in applying Naegele’s Rule.
B. To calculate the expected date of birth (EDB), use Naegele’s Rule, which estimates a 40-week gestation from the first day of the last menstrual period:
- Start with the LMP: March 14, 2024
- Add 1 year: March 14, 2025
- Subtract 3 months: December 14, 2024
- Add 7 days: December 21, 2024
This calculation assumes a 28-day menstrual cycle and provides a standard method for estimating the due date.
C. December 17, 2024: This is four days early, possibly due to an arithmetic error in adding 7 days.
D. November 17, 2024: This is too early, likely due to subtracting months incorrectly or misinterpreting the rule.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. This is the highest priority intervention. The scenario describes a prolapsed umbilical cord, a life-threatening obstetric emergency. When the cord is compressed between the fetus and the maternal pelvis, blood flow through the umbilical cord is reduced, leading to fetal hypoxia, acidosis, or even fetal death if not corrected immediately. The nurse must insert a sterile gloved hand into the vagina and gently lift or hold the presenting part off the cord to relieve pressure. This action restores oxygenated blood flow to the fetus while preparing for emergency delivery, typically via cesarean section.
B. This is dangerous and contraindicated. Ambulation or movement would increase pressure on the prolapsed cord, worsening cord compression and accelerating fetal hypoxia. The client should remain immobilized and positioned to relieve pressure on the cord.
C. While maternal positioning is important to reduce cord compression, placing the client supine alone is insufficient. Evidence-based positions include knee-chest or Trendelenburg, which use gravity to reduce pressure on the cord. However, the manual elevation of the presenting part is the immediate priority, with positioning as an adjunct.
D. This is inappropriate in this scenario. Oxytocin stimulates uterine contractions, which would increase pressure on the prolapsed cord, worsening fetal oxygen deprivation. Administering oxytocin before relieving cord compression is dangerous and could precipitate severe fetal compromise.
Correct Answer is B
Explanation
A. December 7, 2025: This date is over a year late, likely due to miscalculation in applying Naegele’s Rule.
B. To calculate the expected date of birth (EDB), use Naegele’s Rule, which estimates a 40-week gestation from the first day of the last menstrual period:
- Start with the LMP: March 14, 2024
- Add 1 year: March 14, 2025
- Subtract 3 months: December 14, 2024
- Add 7 days: December 21, 2024
This calculation assumes a 28-day menstrual cycle and provides a standard method for estimating the due date.
C. December 17, 2024: This is four days early, possibly due to an arithmetic error in adding 7 days.
D. November 17, 2024: This is too early, likely due to subtracting months incorrectly or misinterpreting the rule.
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