A nurse is conducting an in-service program for a group of nurses working at the women's health facility about the causes of spontaneous abortion. The nurse determines that the teaching was successful when the group identifies which condition as the most common cause of first trimester abortions?
Cervical insufficiency
Uterine fibroids
Fetal genetic abnormalities
Maternal disease
The Correct Answer is C
Choice A Reason: This is incorrect because cervical insufficiency is a condition where the cervix dilates prematurely and painlessly during pregnancy, leading to preterm delivery or second trimester abortion. It is not a common cause of first trimester abortion, which occurs before 12 weeks of gestation.
Choice B Reason: This is incorrect because uterine fibroids are benign tumors that grow in or on the uterus. They may cause heavy bleeding, pain, or infertility, but they are not a common cause of first trimester abortion. They may increase the risk of miscarriage in later stages of pregnancy.
Choice C Reason: This is correct because fetal genetic abnormalities are the most common cause of first trimester abortion, accounting for up to 70% of cases. Fetal genetic abnormalities are errors in the number or structure of chromosomes that occur during fertilization or cell division. They can cause developmental defects or fetal demise that result in spontaneous abortion.
Choice D Reason: This is incorrect because maternal disease is not a common cause of first trimester abortion. Maternal disease refers to any medical condition that affects the mother's health or pregnancy outcome, such as diabetes, hypertension, thyroid disorders, or infections. Maternal disease may increase the risk of miscarriage in later stages of pregnancy or cause other complications such as preterm labor or preeclampsia.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A Reason: Nagele's rule is a formula that estimates the due date by subtracting three months from the first day of the last menstrual period and adding seven days. However, this method assumes a regular 28-day cycle and may not be accurate for women with irregular cycles or who are unsure of their last menstrual period.
Choice B Reason: Ultrasound is the most accurate method of determining the estimated due date, especially in the first trimester. Ultrasound uses sound waves to create an image of the fetus and measure its size and development. Ultrasound can also detect any abnormalities or complications that may affect the pregnancy.
Choice C Reason: Gestation wheel is a circular calendar that estimates the due date by aligning the first day of the last menstrual period with a corresponding date on the wheel. However, this method also assumes a regular 28-day cycle and may not account for variations in ovulation or implantation.
Choice D Reason: Birth calculator is an online tool that estimates the due date based on various factors such as the last menstrual period, cycle length, ovulation date, conception date, or ultrasound date. However, this method may not be reliable as it depends on the accuracy of the input data and the algorithm used by the calculator.
Correct Answer is A
Explanation
Choice A Reason: This is correct because this description accurately reflects one of the main functions of amniotic fluid, which is to act as a shock absorber and buffer against external forces or movements that could harm the fetus. Amniotic fluid also allows the fetus to move freely and develop its muscles and bones.
Choice B Reason: This is incorrect because this description is false. The amount of amniotic fluid changes throughout the pregnancy, depending on the stage of fetal development and other factors. The normal range of amniotic fluid volume is between 500 and 1000 mL at term. Too much or too little amniotic fluid can indicate a problem with the fetus or the placenta.
Choice C Reason: This is incorrect because this description is false. The fluid is not mostly protein, but mostly water (about 98%). The water comes from the mother's blood plasma and the fetal urine. The remaining 2% of amniotic fluid consists of various substances, such as electrolytes, hormones, enzymes, antibodies, and fetal cells. Amniotic fluid does not provide nourishment to the fetus, but rather protects it from infection and helps regulate its temperature.
Choice D Reason: This is incorrect because this description is false. Amniotic fluid does not act as a transport mechanism for oxygen and nutrients, but rather as a barrier that prevents them from reaching the fetus directly. Oxygen and nutrients are delivered to the fetus through the placenta and the umbilical cord, which are connected to the maternal blood circulation.
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