The most common cause of decreased variability in the FHR that lasts 20 minutes or less is:
Fetal sleep cycles.
Head compression during contractions.
Fetal hypoxemia.
Umbilical cord compression.
The Correct Answer is A
Choice A rationale
Fetal sleep cycles cause temporary decreased variability in FHR, typically lasting 20 minutes or less. FHR baseline remains normal. Normal FHR variability is 6-25 bpm.
Choice B rationale
Head compression during contractions leads to early decelerations in FHR, not decreased variability. Early decelerations are a normal response to pressure on the fetal head.
Choice C rationale
Fetal hypoxemia causes decreased variability but usually persists for longer than 20 minutes. It indicates compromised oxygen supply, requiring immediate intervention.
Choice D rationale
Umbilical cord compression leads to variable decelerations in FHR rather than decreased variability. These decelerations vary in onset, duration, and intensity.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
Metal detectors at airport security checkpoints are considered safe and do not pose any risk of harm to the fetus.
Choice B rationale
Seat belts and shoulder restraints should always be used as they provide essential protection for both the mother and the fetus during travel.
Choice C rationale
Pregnant women are advised to walk around every hour during long periods of sitting to improve circulation and prevent blood clots, enhancing fetal health.
Choice D rationale
Prolonged sitting and crossing legs can impede circulation and increase the risk of venous thromboembolism, making it essential to avoid such practices.
Correct Answer is A
Explanation
Choice A rationale
Strong rectal pressure indicates advanced labor and potential imminent delivery, requiring immediate assessment of cervical dilation to ensure appropriate intervention and prevent complications.
Choice B rationale
Encouraging the patient to push without confirming cervical dilation could lead to cervical trauma or delivery complications if dilation is not complete, making this action inappropriate.
Choice C rationale
Notifying the MD without first assessing cervical dilation may cause unnecessary delay in intervention, potentially leading to complications during labor and delivery if the patient is fully dilated.
Choice D rationale
Offering the patient the bedpan when she feels strong rectal pressure can increase the risk of delivering the baby in an inappropriate setting, as the rectal pressure suggests imminent birth.
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