A nurse is caring for a client who is 39 weeks gestation and having contractions.
Which of the following should the nurse recognize as a sign of true labor?
Uterine contractions that cause variable decelerations.
Regular uterine contractions that cause cervical change.
Station of the presenting part.
Rupture of the membranes resulting in uterine contractions.
The Correct Answer is B
Choice A rationale
Uterine contractions that cause variable decelerations are not specific to true labor. Variable decelerations are typically associated with umbilical cord compression and can occur during both true and false labor.
Choice B rationale
Regular uterine contractions that cause cervical change are a definitive sign of true labor. True labor is characterized by contractions that become progressively stronger, more frequent, and more regular, leading to cervical dilation and effacement. This process indicates that the body is preparing for childbirth.
Choice C rationale
The station of the presenting part refers to the position of the fetus in relation to the ischial spines of the pelvis. While it is an important aspect of labor progression, it is not a definitive sign of true labor.
Choice D rationale
Rupture of the membranes, or the breaking of the water, can occur before true labor begins. While it often indicates that labor is imminent, it is not a definitive sign of true labor on its own.
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Correct Answer is B
Explanation
Choice A rationale
Encouraging the client to continue pushing is not appropriate at this stage. The client is 9 cm dilated, which indicates that she is in the transition phase of labor, not yet fully dilated and ready to push. Pushing at this stage could cause cervical swelling and delay progress.
Choice B rationale
Preparing the client for delivery is the most appropriate action. The client is in the transition phase of labor, with 9 cm dilation, 100% effacement, and +1 station. This indicates that delivery is imminent, and the nurse should prepare for the birth process.
Choice C rationale
Administering pain relief as prescribed may be considered, but it is not the priority action at this stage. The client is in the transition phase, and administering pain relief could interfere with the natural progression of labor. Non-pharmacological support may be more appropriate.
Choice D rationale
Reassuring the client and providing emotional support is important, but it is not the primary action at this stage. The nurse should focus on preparing for delivery while also providing support and reassurance.
Correct Answer is A
Explanation
Choice A rationale
Terbutaline is a beta-adrenergic agonist that works by relaxing the smooth muscles of the uterus, thereby reducing uterine contractions. It is commonly used in cases of tachysystole and recurrent late decelerations to decrease uterine activity and improve fetal oxygenation. Terbutaline’s mechanism of action involves stimulating beta-2 adrenergic receptors, which leads to an increase in cyclic AMP and subsequent relaxation of uterine smooth muscle.
Choice B rationale
Oxytocin is a hormone that stimulates uterine contractions and is typically used to induce or augment labor. Administering oxytocin in a situation where there is already tachysystole and recurrent late decelerations would exacerbate the problem by increasing uterine contractions, potentially leading to further fetal distress.
Choice C rationale
Misoprostol is a prostaglandin analog used to ripen the cervix and induce labor. Similar to oxytocin, it would not be appropriate in this scenario as it would increase uterine contractions, worsening the tachysystole and late decelerations.
Choice D rationale
Magnesium sulfate is primarily used as a tocolytic to prevent preterm labor and as a neuroprotective agent for the fetus in cases of preeclampsia. While it has some uterine relaxation properties, it is not the first-line treatment for reducing uterine activity in the context of tachysystole and late decelerations.