What is the primary purpose of using terbutaline in labor for intrauterine resuscitation?
To stimulate uterine contractions
To improve placental blood flow
To decrease fetal heart rate variability
To prevent preterm labor
The Correct Answer is B
A. To stimulate uterine contractions: Terbutaline is a tocolytic (a medication that relaxes the uterus), not a uterotonic. It is not used to stimulate contractions.
B. To improve placental blood flow: Terbutaline relaxes uterine muscles, decreasing contraction frequency and intensity, thereby improving placental blood flow. It is often used in intrauterine resuscitation when there is uteroplacental insufficiency and fetal distress due to excessive contractions (tachysystole).
C. To decrease fetal heart rate variability: Terbutaline does not directly affect fetal heart rate variability. It is used to reduce uterine contractions, which can secondarily improve fetal oxygenation.
D. To prevent preterm labor: While terbutaline can be used to delay preterm labor, in this context, it is being used for intrauterine resuscitation, not for preventing labor.
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Related Questions
Correct Answer is C
Explanation
A. Late decelerations: Late decelerations are associated with uteroplacental insufficiency, not umbilical cord issues. They indicate decreased oxygenation to the fetus.
B. Accelerations: Accelerations are reassuring signs of fetal well-being and do not indicate any umbilical cord problems.
C. Variable decelerations: Variable decelerations are caused by umbilical cord compression, leading to abrupt drops in fetal heart rate. They can be mild or severe, requiring interventions such as maternal position changes or oxygen administration.
D. Early decelerations: Early decelerations are benign and occur due to fetal head compression during contractions. They are not associated with umbilical cord issues.
Correct Answer is D
Explanation
A. Increase the client's IV fluid infusion rate. While increasing IV fluids can improve placental perfusion, the priority intervention for late decelerations is repositioning the client to relieve uteroplacental insufficiency.
B. Palpate the client's uterus. Uterine palpation helps assess for tachysystole (excessive contractions), which could contribute to late decelerations. However, this is not the priority intervention.
C. Administer oxygen to the client. Oxygen administration (8-10 L/min via face mask) improves fetal oxygenation, but repositioning the client should be done first to relieve pressure on the placenta.
D. Turn the client onto her side. Repositioning the client to the left or right lateral position improves uteroplacental circulation and reduces compression of the inferior vena cava, increasing blood flow to the fetus.
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