When interpreting a fetal monitoring tracing, which of the following findings would require the nurse to intervene?
Presence of late decelerations.
Variability in fetal heart rate of 12 bpm.
Accelerations in fetal heart rate.
Baseline fetal heart rate of 140 bpm.
The Correct Answer is A
Choice A rationale
Late decelerations are a sign of uteroplacental insufficiency and fetal hypoxia. They occur after the peak of a contraction and indicate that the fetus is not receiving enough oxygen. This requires immediate intervention to improve fetal oxygenation and prevent fetal distress.
Choice B rationale
Variability in fetal heart rate of 12 bpm is considered moderate variability, which is a reassuring sign of fetal well-being. It indicates that the fetus has a healthy autonomic nervous system and is not in distress.
Choice C rationale
Accelerations in fetal heart rate are also a reassuring sign. They indicate that the fetus is well-oxygenated and responding appropriately to stimuli. No intervention is needed for accelerations.
Choice D rationale
A baseline fetal heart rate of 140 bpm is within the normal range (110-160 bpm) and does not indicate any immediate concern. It is a sign of a healthy, well-oxygenated fetus.
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View 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
Variable decelerations are not related to the use of narcotic analgesics. Narcotic analgesics can cause other fetal heart rate changes, such as decreased variability, but they do not cause variable decelerations.
Choice B rationale
Variable decelerations are due to umbilical cord compression. This is the correct interpretation. Umbilical cord compression can lead to transient decreases in fetal blood flow and oxygenation, resulting in variable decelerations on the fetal monitor tracing.
Choice C rationale
Variable decelerations are not caused by maternal hypotension. Maternal hypotension can lead to late decelerations due to uteroplacental insufficiency, but it does not cause variable decelerations.
Choice D rationale
Variable decelerations are not indicative of fetal hypoxia. While severe and persistent variable decelerations can lead to fetal hypoxia, the primary cause of variable decelerations is umbilical cord compression.