A patient in labor arrives at labor and delivery complaining of intense pain with contractions in her lower abdomen and perineal area.
What does the nurse suspect?
The baby's head may be facing in the wrong direction.
The patient is most likely in the first stage of labor.
The patient is most likely in or nearing the second stage of labor.
The baby is distressed.
The Correct Answer is C
Choice A rationale
While a baby’s head facing the wrong direction, such as an occiput posterior position, can cause back labor pain, it typically manifests as intense back pain, not just lower abdominal and perineal pain. The intense pain in the lower abdomen and perineal area is characteristic of the baby's head descending and applying pressure on the pelvic floor and surrounding tissues.
Choice B rationale
The first stage of labor is characterized by cervical changes (dilation and effacement) with pain typically felt in the uterine fundus and radiating to the lower back and abdomen. Intense pain specifically in the lower abdomen and perineal area, as described, suggests significant fetal head descent, which is more characteristic of the second stage of labor.
Choice C rationale
The second stage of labor begins when the cervix is fully dilated and ends with the birth of the baby. During this stage, the fetus's head descends into the pelvis, causing intense pressure and pain in the lower abdomen and perineal area as it presses on the pelvic floor, nerves, and surrounding structures. The patient's pain description strongly aligns with this process.
Choice D rationale
While fetal distress can cause changes in fetal heart rate and may be a concern during labor, it is not directly associated with the specific location of the patient's pain. Fetal distress is primarily a fetal issue, and its signs are seen in fetal monitoring, such as late decelerations or a non-reassuring fetal heart rate pattern, rather than in the specific location of the mother's pain.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["C","D"]
Explanation
Choice A rationale
Uterine contractions are governed by complex hormonal and mechanical pathways involving oxytocin and prostaglandins. Walking and position changes primarily influence fetal positioning and maternal comfort, not the frequency or duration of contractions. In fact, these activities can sometimes strengthen contractions by utilizing gravity to increase pressure on the cervix.
Choice B rationale
The primary goal of walking and frequent position changes is to reduce pain and increase comfort. By changing positions, the mother can alleviate pressure on specific areas, optimize blood flow, and distract herself from the pain, which scientifically reduces the perception of pain and increases the body's natural endorphin release.
Choice C rationale
Frequent changes in position and ambulation during labor can increase comfort by reducing pressure on the sacrum and perineum, improving blood flow, and allowing the mother to find a more tolerable position. This scientifically reduces pain perception and enhances the mother's coping mechanisms, making the labor process more manageable.
Choice D rationale
Walking and position changes utilize gravity to help the fetus descend into the pelvis and rotate into an optimal position for birth. This can improve the fit of the fetal head in the maternal pelvis, promoting efficient labor progression and helping the fetus navigate the curves of the birth canal more effectively.
Correct Answer is C
Explanation
Choice A rationale
Tocolytic drugs, such as beta-adrenergic agonists (e.g., terbutaline) or magnesium sulfate, work by inhibiting uterine contractions. They do not possess any antimicrobial properties or mechanisms to protect the fetus from infection. Prophylactic antibiotics, not tocolytics, are administered to prevent or treat infections, especially in cases of prolonged rupture of membranes. The primary action is solely on smooth muscle relaxation, not immune response.
Choice B rationale
Tocolytic drugs function as uterine relaxants, suppressing uterine muscle contractions to delay preterm birth. Tying the cervix closed, a procedure known as a cerclage, is a surgical intervention used to prevent miscarriage or preterm birth in women with cervical insufficiency. This is a structural solution, completely different from the pharmacological mechanism of tocolytics which acts on smooth muscle cells.
Choice C rationale
Tocolytic medications delay labor, providing a crucial window to administer antenatal corticosteroids like betamethasone or dexamethasone. These corticosteroids require 24 to 48 hours to be effective, crossing the placenta to accelerate fetal lung maturity by stimulating surfactant production. This reduces the risk of respiratory distress syndrome, intraventricular hemorrhage, and necrotizing enterocolitis in the preterm infant.
Choice D rationale
Tocolytic drugs do not prevent the rupture of membranes. The rupture of membranes, known as amniorrhexis, is a physical event caused by the breakdown of the amniotic sac. Tocolytics act on the uterine muscle to inhibit contractions, which is a different physiological process. They can sometimes be used after membranes have ruptured to delay delivery, but they don't prevent the rupture itself.
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