The principal risk factor predictive of preterm birth is:
History of preterm birth.
Low prepregnancy weight.
Smoking during pregnancy.
Obesity.
The Correct Answer is A
Choice A rationale
History of preterm birth is the principal risk factor for predicting preterm birth. Previous preterm births significantly increase the likelihood of subsequent preterm deliveries due to
underlying etiological factors.
Choice B rationale
Low prepregnancy weight is a risk factor but not as significant as a history of preterm birth. It can contribute to complications in pregnancy but does not have the same predictive value.
Choice C rationale
Smoking during pregnancy increases the risk of preterm birth but is not the principal risk factor. It is a modifiable behavior that contributes to poor pregnancy outcomes.
Choice D rationale
Obesity can impact pregnancy outcomes but is not the principal risk factor for preterm birth. It is associated with other complications rather than directly predicting preterm delivery.
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Correct Answer is A
Explanation
Choice A rationale
Blood pressure of 160/110 indicates severe preeclampsia and warrants immediate intervention to prevent complications. Stopping oxytocin is part of the management of severe
preeclampsia to avoid exacerbating the condition.
Choice B rationale
Frequency of contractions every 3 minutes is within the normal range during labor induction and does not warrant stopping the infusion unless there are other concerns.
Choice C rationale
A fetal heart rate of 155 bpm with early decelerations may require close monitoring but does not necessarily warrant stopping the oxytocin infusion. Early decelerations are typically a
normal physiological response.
Choice D rationale
Frequency of contractions every 3 minutes is expected during active labor and is generally not a cause to stop the oxytocin infusion. The nurse should continue to monitor the labor
progression closely.
Correct Answer is A
Explanation
Choice A rationale
Methylergonovine (Methergine) is used to manage postpartum hemorrhage by stimulating uterine contractions. It is especially useful in cases like this where rapid uterine tone is needed.
Choice B rationale
Magnesium sulfate is used to prevent seizures in preeclamptic patients, not to manage postpartum hemorrhage. This choice is incorrect in this context.
Choice C rationale
Carboprost-tromethamine (Hemabate) is also used for treating postpartum hemorrhage but is typically a secondary option to methylergonovine and may have more side effects.
Choice D rationale
Fresh frozen plasma (FFP) is used to replace clotting factors in cases of coagulopathy, not as a primary intervention for postpartum hemorrhage in this patient.