A nurse is reviewing the results of a biophysical profile for a client who is at 37 weeks of gestation.
Which of the following findings indicates fetal well-being?
Nonreactive nonstress test.
The fetus had four limb movements in 30 minutes.
The fetus had 20 seconds of sustained breathing movements in 30 minutes.
Amniotic fluid index of 1 cm.
The Correct Answer is B
Choice A rationale
A nonreactive nonstress test (NST), defined by having fewer than two accelerations of at least 15 beats per minute (BPM) above baseline, lasting at least 15 seconds, within a 20-minute window, indicates potential fetal compromise or sleep state, leading to a maximum score of 0 on this component, thus not indicating well-being.
Choice B rationale
The biophysical profile (BPP) scores fetal movement with a maximum of 2 points for three or more discrete body or limb movements within a 30-minute period. The finding of four limb movements clearly meets this criterion and earns the full 2 points, reflecting an intact central nervous system and adequate fetal oxygenation, which is a sign of fetal well-being.
Choice C rationale
The BPP criterion for fetal breathing movements requires at least one episode of sustained movements for 30 seconds within the 30-minute observation period to score 2 points. The finding of 20 seconds is insufficient to meet this 30-second threshold, resulting in a score of 0 points for this component and thus not indicating full well-being.
Choice D rationale
The amniotic fluid index (AFI) measures the sum of the deepest vertical pockets of amniotic fluid in the four quadrants of the uterus. An AFI of 1 cm is significantly below the normal range of 5 cm to 25 cm, indicating oligohydramnios (low fluid). This finding scores 0 points on the BPP and suggests potential chronic fetal compromise or renal issues.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale: Trendelenburg position, where the client is placed with the head lower than the feet, is not appropriate in this scenario. This position is typically used for procedures requiring pelvic exposure or in cases of air embolism. It does not optimize uteroplacental perfusion and may actually compromise maternal respiratory function in late pregnancy due to diaphragmatic pressure from the gravid uterus. Therefore, it is not the correct position following prostaglandin insertion.
Choice B rationale: Knee-chest position is used in obstetric emergencies such as umbilical cord prolapse to relieve pressure on the cord and improve fetal oxygenation. It is not indicated for cervical ripening or for optimizing uteroplacental perfusion. Maintaining this position would be uncomfortable and unnecessary for the client, and it does not aid in medication absorption. Thus, it is not the correct intervention in this context.
Choice C rationale: Lateral tilt, specifically left lateral or side-lying tilt, is the correct position. This position reduces compression of the inferior vena cava by the gravid uterus, thereby improving venous return, cardiac output, and uteroplacental perfusion. It also facilitates optimal absorption of the vaginal prostaglandin insert by keeping the medication in place. This is the evidence-based nursing intervention following prostaglandin administration for cervical ripening.
Choice D rationale: Lithotomy position is used primarily for vaginal examinations, procedures, or delivery. It is not appropriate for maintaining medication absorption or optimizing uteroplacental perfusion. Prolonged lithotomy positioning increases maternal discomfort and risk of venous stasis. Since the client is not undergoing delivery or a procedure requiring pelvic exposure, this position is not indicated after prostaglandin insertion.
Correct Answer is B
Explanation
Choice A rationale
Erb-Duchenne palsy, a form of brachial plexus injury (C5-C6), primarily affects the nerves controlling the shoulder and upper arm muscles. It generally does not affect cranial nerves (such as IX and X, which control swallowing) or the muscles of the mouth, thus typically preserving the ability to suck and swallow.
Choice B rationale
The Moro (startle) reflex involves symmetrical extension and abduction of the arms followed by adduction and flexion. An injury to the brachial plexus on one side impairs the motor function of that arm, resulting in the characteristic absence of the reflex in the affected extremity, which is a key diagnostic finding.
Choice C rationale
The Babinski reflex is a normal neurological finding in infants up to about 2 years old, reflecting immature corticospinal tracts. It is a foot reflex and is unrelated to a brachial plexus injury in the neck and shoulder area; thus, its presence is not a specific finding for Erb-Duchenne palsy.
Choice D rationale
Cleft palate is a congenital craniofacial malformation resulting from incomplete fusion of the palatine shelves during fetal development. It is a structural anomaly of the mouth and is not a finding or complication associated with Erb-Duchenne palsy, which is a neuromuscular injury sustained, most commonly, during birth.
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