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. Maternal bradycardia: Late decelerations are caused by uteroplacental insufficiency, not maternal heart rate changes.
B. Fetal head compression: Fetal head compression causes early decelerations, which are benign and mirror contractions. Late decelerations occur after contractions and indicate a more serious issue.
C. Uteroplacental insufficiency: Late decelerations occur due to decreased oxygenation from poor placental perfusion (uteroplacental insufficiency). Common causes include maternal hypotension, post-term pregnancy, uterine tachysystole, and placental abruption.
D. Umbilical cord compression: Umbilical cord compression causes variable decelerations, not late decelerations.
Correct Answer is A
Explanation
A. Excessive carbohydrate intake: Many vegetarian protein sources (e.g., legumes, whole grains, fruits) are also high in carbohydrates, making blood sugar control more challenging for clients with gestational diabetes.
B. Difficulty managing blood sugar levels: While managing blood sugar can be a challenge, the root cause is often excessive carbohydrate intake rather than inherent difficulty in regulation.
C. Limited protein sources: While vegetarian diets limit animal protein, many plant-based protein sources (e.g., tofu, lentils, nuts) are available, making this less of a concern.
D. Lack of essential vitamins and minerals: A well-balanced vegetarian diet can provide all essential nutrients with proper planning. However, vegetarians should monitor vitamin B12, iron, and omega-3 intake, but this is not the biggest challenge specific to gestational diabetes.
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