One side effect of oxytocin stimulation is hypertonic contractions. This can be detrimental to the fetus because
It produces a prolapsed cord.
It increases maternal renal blood flow.
It decreases maternal blood pressure.
There is a reduction of placental blood flow.
The Correct Answer is D
Choice A reason:
A prolapsed umbilical cord occurs when the cord slips ahead of the presenting fetal part, potentially leading to cord compression and compromised fetal oxygenation. However, hypertonic contractions do not directly cause a prolapsed cord. Instead, factors such as premature rupture of membranes, abnormal fetal positioning, or excessive amniotic fluid (polyhydramnios) are more likely contributors to cord prolapse. Hypertonic contractions primarily affect uteroplacental circulation rather than fetal positioning.
Choice B reason:
One side effect of oxytocin stimulation is hypertonic contractions. This can be detrimental to the fetus because it produces a prolapsed cord. This is incorrect because a prolapsed cord is not caused by hypertonic contractions, but by other factors such as a low-lying placenta, a premature rupture of membranes, a small or preterm fetus, or an abnormal presentation. A prolapsed cord occurs when the umbilical cord slips through the cervix and into the vagina before or during delivery. This can compress the cord and cut off the blood supply to the fetus, resulting in fetal bradycardia and possible death.
Choice C reason:
One side effect of oxytocin stimulation is hypertonic contractions. This can be detrimental to the fetus because it increases maternal renal blood flow. This is incorrect because hypertonic contractions do not affect maternal renal blood flow directly. Maternal renal blood flow is influenced by factors such as maternal blood pressure, hydration, cardiac output, and renal function. Hypertonic contractions may cause maternal dehydration, which can reduce renal blood flow, but this is not a direct effect of oxytocin stimulation.
Choice D reason:
Hypertonic contractions reduce placental blood flow by limiting the relaxation phase between contractions. Normally, uterine contractions intermittently compress the spiral arteries supplying the placenta, but prolonged or excessively frequent contractions prevent adequate placental perfusion. This can lead to fetal hypoxia, acidosis, and distress, making it the most detrimental effect of oxytocin-induced hypertonic contractions.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason:
The tonic neck reflex, also called the fencing posture, occurs when a baby's head is turned to one side. The arm and leg on that side stretch out, while the opposite arm and leg bend up at the elbow. This reflex lasts until the baby is about 5 to 7 months old. This reflex matches the description of the question.
Choice B reason:
The Moro reflex, also called the startle reflex, is the baby's reaction to being startled. The cause is often a loud sound, a sudden movement, or even their own cry. As an adult, you may jump or gasp when you are startled. A baby will throw back their head, extend their arms and legs, cry, then pull their arms and legs back in. This reflex does not match the description of the question.
Choice C reason:
The startled reflex is not a distinct reflex in newborns. It is another name for the Moro reflex, which is explained.
Correct Answer is C
Explanation
Choice A reason:
Occasional uterine cramping when the infant nurses is a normal phenomenon that occurs as the uterus contracts and returns to its pre-pregnancy size. This is not a sign of infection or complication and does not need to be reported.
Choice B reason:
Descent of the fundus one fingerbreadth each day is also a normal finding that indicates the uterus is involuting properly. The fundus is the top of the uterus that can be felt through the abdomen. It should be at the level of the umbilicus immediately after delivery and then descend about one fingerbreadth (or 1 cm) each day until it reaches the pelvic brim by 10 days postpartum.
Choice C reason:
Reappearance of red lochia after it changes to serous is an abnormal sign that may indicate uterine atony, subinvolution, or retained placental fragments. Lochia is the vaginal discharge that occurs after childbirth, consisting of blood, mucus, and tissue. It usually changes from red to pink to brown to yellow-white over a period of several weeks. If it becomes red again, it may mean that there is bleeding from the uterus or infection in the endometrium. This should be reported to a health care provider as soon as possible.
Choice D reason:
Oral temperature that is 37.2 C (99 F) in the morning is within the normal range and does not indicate fever or infection. A slight elevation in temperature may occur due to dehydration, breast engorgement, or hormonal changes. This does not need to be reported unless it exceeds 38 C (100.4 F) or persists for more than 24 hours.
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