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 considered normal and are associated with a well-oxygenated, non-acidotic fetus with a normal fetal heart rate baseline, moderate variability, and no late or variable decelerations. However, a baseline heart rate of 175 bpm is considered tachycardia, which does not fit the criteria for Category I.
Choice B rationale
Category II tracings are indeterminate and include any fetal heart rate pattern that does not fit into Category I or III. A baseline heart rate of 175 bpm with moderate variability and no accelerations or decelerations fits into this category. This indicates that the fetus may be experiencing some stress but is not in immediate danger.
Choice C rationale
Category III tracings are abnormal and are associated with an increased risk of fetal acidemia. These tracings include absent baseline variability with recurrent late or variable decelerations, bradycardia, or a sinusoidal pattern. The given tracing does not meet these criteria as it shows moderate variability and no decelerations.
Choice D rationale
There is no Category IV in the classification of fetal heart rate tracings. The standard classification includes only Categories I, II, and III.
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Correct Answer is A
Explanation
Choice A rationale
A reactive non-stress test (NST) indicates that the fetal heart rate increases appropriately with fetal movements, suggesting good fetal oxygenation and neurological function. This is the desired outcome for an NST4.
Choice B rationale
A non-reactive NST means the fetal heart rate did not increase with movements, which could indicate fetal hypoxia or other issues. Further testing would be needed to assess fetal well-being.
Choice C rationale
An inconclusive NST means the test did not provide enough information to determine fetal well-being, possibly due to fetal sleep cycles or maternal factors. Additional testing would be required.
Choice D rationale
A positive NST is not a standard term used in fetal monitoring. The correct terms are reactive or non-reactive.
Correct Answer is B
Explanation
Choice A rationale
Monitoring the patient’s vocalizations and facial expressions can provide some information about the intensity of contractions, but it is subjective and not a reliable method for accurately assessing contraction intensity.
Choice B rationale
Palpating the maternal abdomen during a contraction is the best method for determining the intensity of contractions. By feeling the firmness of the uterus, the nurse can assess whether the contractions are mild, moderate, or strong. This method provides a more objective measure of contraction intensity compared to other methods.
Choice C rationale
Timing the amount of time between the ending of one contraction and the beginning of the next provides information about the frequency of contractions, not their intensity. This choice does not address the question of how to determine contraction intensity.
Choice D rationale
Palpating the maternal abdomen right after a contraction does not provide information about the intensity of the contraction that just occurred. The uterus will be relaxed after the contraction, making it difficult to assess the strength of the previous contraction.