When the mother's membranes rupture during active labor, the fetal heart rate should be observed for the occurrence of which periodic pattern?
Increase in baseline variability.
Non-periodic accelerations.
Early decelerations.
Variable decelerations.
The Correct Answer is D
Choice A rationale
An increase in baseline variability is generally considered a reassuring sign of fetal well-being, indicating a responsive central nervous system and adequate oxygenation. While important to monitor, it is not a specific periodic pattern to observe immediately following membrane rupture due to potential cord compression. Normal baseline variability ranges from 6 to 25 beats per minute.
Choice B rationale
Non-periodic accelerations are abrupt increases in fetal heart rate above the baseline, typically lasting less than 30 seconds. They are usually a reassuring sign, often occurring with fetal movement or stimulation. While their presence is noted, they are not the primary periodic pattern to observe immediately after membrane rupture for potential complications.
Choice C rationale
Early decelerations are gradual decreases in fetal heart rate that mirror the uterine contractions. They are thought to be caused by fetal head compression and are generally considered benign. While their presence is documented, they are not the most concerning pattern immediately after membrane rupture, which raises the risk of cord issues.
Choice D rationale
Variable decelerations are abrupt decreases in fetal heart rate that are variable in timing and shape in relation to uterine contractions. They are often caused by umbilical cord compression, which is a significant risk factor immediately following the rupture of membranes, as the fluid cushion around the cord is reduced. Prompt identification is crucial for intervention.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
A reactive nonstress test demonstrates at least two accelerations in fetal heart rate, defined as an increase of 15 beats per minute above the baseline lasting for 15 seconds, within a 20-minute period. These accelerations indicate adequate fetal oxygenation and a healthy fetal autonomic nervous system response to movement.
Choice B rationale
Drawing blood to evaluate the baby's risk of genetic problems is typically performed through procedures like amniocentesis or chorionic villus sampling, not during a nonstress test. A nonstress test assesses fetal well-being based on heart rate patterns in response to fetal movement.
Choice C rationale
While fetal movement is an indicator of fetal well-being, the nonstress test specifically evaluates the fetal heart rate response to that movement. The number of movements within a specific time frame is a component of a biophysical profile, not the sole indicator in a nonstress test.
Choice D rationale
Ultrasound is used to visualize fetal anatomy and assess for congenital anomalies, which is a component of a fetal anatomy scan typically performed around 18-20 weeks of gestation. A nonstress test primarily monitors fetal heart rate and its reactivity.
Correct Answer is B
Explanation
Choice A rationale
Elevating the mother's legs may help with venous return and circulation, but it does not directly address a soft and boggy uterus, which indicates uterine atony and a risk for hemorrhage. The immediate priority is to promote uterine contraction.
Choice B rationale
A soft and boggy uterus indicates uterine atony, a primary cause of postpartum hemorrhage. Massaging the fundus stimulates the uterine muscles to contract, which helps to compress the blood vessels at the placental site and reduce bleeding. This is the most appropriate initial intervention to address uterine atony.
Choice C rationale
Encouraging the mother to void is important in the postpartum period as a full bladder can displace the uterus and interfere with its ability to contract. However, in the presence of a soft and boggy uterus, the immediate priority is to directly stimulate uterine contraction through fundal massage before addressing bladder emptying.
Choice D rationale
Pushing on the uterus to express clots without first ensuring the uterus is firm is contraindicated. A soft, atonic uterus is more susceptible to inversion if pressure is applied. Fundal massage should be performed first to encourage uterine contraction and firmness before attempting to express any clots.
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