The labor and delivery nurse is caring for a client in active labor.
The nurse notes the fetal heart rate baseline is 175 bpm, moderate variability.
Accelerations are absent and no decelerations noted.
How should the nurse describe this tracing to the medical provider?
Category I.
Category II.
Category III.
Category IV.
The Correct Answer is B
Choice A rationale
Category I tracings are normal and indicate no fetal hypoxia or acidemia. They include a baseline heart rate of 110-160 bpm, moderate variability, and no late or variable decelerations.
Choice B rationale
Category II tracings are indeterminate and include any of the following: baseline heart rate changes, minimal or marked variability, absence of accelerations, or periodic decelerations. A baseline heart rate of 175 bpm with moderate variability and absent accelerations fits this category.
Choice C rationale
Category III tracings are abnormal and indicate possible fetal hypoxia or acidemia. They include absent variability with recurrent late or variable decelerations, bradycardia, or a sinusoidal pattern.
Choice D rationale
Category IV is not a standard classification in fetal heart rate monitoring. The correct categories are I, II, and III6.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
Breech presentation means the fetus’s buttocks or feet are positioned to be delivered first. Fetal heart tones are often heard above the umbilicus in this position.
Choice B rationale
Transverse lie means the fetus is lying horizontally in the uterus. Fetal heart tones would typically be heard at the sides of the abdomen.
Choice C rationale
Cephalic presentation means the fetus’s head is positioned to be delivered first. Fetal heart tones are usually heard below the umbilicus in this position.
Choice D rationale
Oblique lie means the fetus is positioned diagonally in the uterus. Fetal heart tones can be variable depending on the exact position.
Correct Answer is B
Explanation
Choice A rationale
Early decelerations are characterized by a gradual decrease and return to baseline of the fetal heart rate that coincides with the peak of a contraction. They are typically benign and related to fetal head compression.
Choice B rationale
Late decelerations are characterized by a gradual decrease and return to baseline of the fetal heart rate that occurs after the peak of a contraction. They are associated with uteroplacental insufficiency and require prompt intervention to improve fetal oxygenation.
Choice C rationale
Variable decelerations are characterized by an abrupt decrease in fetal heart rate that varies in duration, intensity, and timing relative to contractions. They are often caused by umbilical cord compression and may require interventions to relieve the compression.
Choice D rationale
Prolonged decelerations are characterized by a decrease in fetal heart rate that lasts longer than 2 minutes but less than 10 minutes. They indicate a more severe and sustained disruption in fetal oxygenation and require immediate intervention.
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