A nurse is assessing a client who is in active labor and notes that the presenting part is at 0 station. Which of the following is the correct interpretation of this clinical finding?
The lowermost portion of the fetus is at the level of the ischial spines.
The largest fetal diameter has passed through the pelvic outlet.
The posterior fontanel is palpable.
The fetal head is in the left occiput posterior positions
The Correct Answer is A
A. The lowermost portion of the fetus is at the level of the ischial spines.
A. The lowermost portion of the fetus being at the level of the ischial spines is the correct interpretation of 0 station. In the station system, when the presenting part is at the level of the ischial spines, it is referred to as 0 station.
B. The largest fetal diameter passing through the pelvic outlet is generally represented by the complete passage of the fetus through the birth canal. This is more indicative of full cervical dilation (10 cm) rather than a specific station.
C. The posterior fontanel being palpable is not directly related to the concept of station. Fontanel palpation is more associated with determining fetal head position.
D. The fetal head being in the left occiput posterior position is related to fetal position, not station. The station describes the descent of the presenting part in relation to the ischial spines.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A Reason:
Left upper quadrant is incorrect. The left upper quadrant is less likely to be the area where the point of maximum intensity of the fetal heart is heard when the fetal position is left occipital anterior.
Choice B Reason:
Right upper quadrant is incorrect. The right upper quadrant is not the typical location for assessing fetal heart tones when the fetal position is left occipital anterior. The heart tones are generally heard more towards the left side.
Choice C Reason:
Left lower quadrant is correct. Placing the ultrasound transducer in the left lower quadrant is likely to provide the best detection of the fetal heart tones in the described fetal position.
Choice D Reason:
Right lower quadrant is incorrect. Similar to the right upper quadrant, the right lower quadrant is not the optimal location for assessing the fetal heart when the fetal position is left occipital anterior. The left side is typically where the point of maximum intensity is found.
Correct Answer is D
Explanation
A. The cervix being effaced is not represented by the -1 notation in a vaginal examination. Effacement is usually expressed as a percentage.
B. The -1 notation does not represent cervical dilation. Dilation is measured in centimeters.
C. The presenting part being 1 cm below the ischial spines is not correct. In the station system, if the presenting part is above the ischial spines, it is represented by a negative number. A -1 station indicates that the presenting part is 1 cm above the ischial spines.
D. The presenting part is 1 cm above the ischial spines is the correct interpretation.
In the station system, if the presenting part is above the ischial spines, it is represented by a negative number. A -1 station indicates that the presenting part is 1 cm above the ischial spines.
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