A nurse is caring for a client who is at 37 weeks of gestation and reports a slow trickle of vaginal fluid for the past 12 hours.
Which of the following diagnostic tests should the nurse anticipate?
Speculum exam to test for fetal fibronectin.
Vaginal swab for nitrazine testing.
Urinalysis to determine protein content.
Amniocentesis to determine fetal lung maturity.
The Correct Answer is B
Choice A rationale
A speculum exam to test for fetal fibronectin is primarily used to predict the risk of preterm labor in symptomatic women between 22 and 34 weeks of gestation. Since the client is at 37 weeks of gestation (term) and the concern is a slow trickle of fluid suggesting rupture of membranes (ROM), this test is not appropriate for the current clinical presentation or gestational age.
Choice B rationale
Nitrazine testing is a rapid, non-invasive method used to determine if the fluid leaking from the vagina is amniotic fluid. Amniotic fluid is alkaline (pH of 7.0 to 7.5) and will turn the yellow-to-orange nitrazine paper to a characteristic deep blue color, which helps confirm the diagnosis of premature rupture of membranes (PROM), a likely cause of the reported fluid trickle.
Choice C rationale
A urinalysis determines components like protein, glucose, and ketones, and is mainly used to screen for conditions such as preeclampsia (indicated by proteinuria) or urinary tract infection (UTI). While part of routine prenatal care, it is not the diagnostic test for confirming ruptured membranes, which is the primary concern given the client's report of a slow trickle of vaginal fluid.
Choice D rationale
Amniocentesis is an invasive procedure used to aspirate amniotic fluid, typically to assess fetal lung maturity (L/S ratio) or for genetic testing. Since the client is at 37 weeks and the suspicion is ruptured membranes, which warrants immediate action due to infection risk, the risks and benefits of an amniocentesis for lung maturity are not justified.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
Subconjunctival hemorrhage is a common, generally benign finding in newborns, often resulting from increased intraocular pressure during the birthing process, causing rupture of superficial capillaries in the sclera. It presents as a bright red patch under the conjunctiva and usually resolves spontaneously within a few weeks without intervention, thus it does not warrant immediate, priority assessment.
Choice B rationale
Rust-stained urine, or pink-tinged urine, in a newborn is typically due to the presence of uric acid crystals (urates) in the urine, a normal finding related to concentrated urine and the immaturity of the newborn kidney's ability to concentrate urine fully. This is a common, non-pathological observation in the first few days of life, indicating mild dehydration, but it is not an acute, high-priority concern.
Choice C rationale
Nasal flaring is a significant sign of respiratory distress in a newborn, indicating the infant is attempting to increase the diameter of the nasal passages to decrease airway resistance and enhance the intake of oxygen. This compensatory mechanism suggests compromised gas exchange and potential hypoxemia, requiring immediate assessment and intervention to prevent further respiratory compromise.
Choice D rationale
Overlapping suture lines, also known as molding, occurs when the cranial bones shift and overlap during passage through the narrow birth canal. This is a normal, expected finding, especially after a vaginal delivery, and the shape of the head typically returns to normal within a few days to a week, posing no immediate threat to the newborn.
Correct Answer is C
Explanation
Step 1 is: Start with the first day of the last menstrual period (LMP): July 21st.
Step 2 is: Subtract 3 months: July minus 3 months is April.
Step 3 is: Add 7 days to the LMP day: 21 plus 7 days is the 28th.
Step 4 is: Add 1 year: April 28th of the following year. Final calculated answer: April 28th.
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