A nurse is caring for a client who is at 37 weeks of gestation and diagnosed with placenta previa. The client asks the nurse why the provider does not do an internal examination. Which of the following explanations of the primary reason should the nurse provide?

Explanation:

A. Preparation for cesarean birth:

This is the correct choice. Placenta previa is a condition where the placenta partially or completely covers the cervix, leading to vaginal bleeding. In cases of suspected placenta previa with significant bleeding, cesarean birth is the safest delivery option to minimize the risk of complications such as hemorrhage. Therefore, immediate preparation for cesarean birth is indicated to ensure the safety of both the mother and the baby.

B. Initiation of pushing:

Pushing or active pushing efforts are contraindicated in cases of suspected placenta previa with significant vaginal bleeding. Pushing can increase the risk of further placental detachment and exacerbate bleeding. It is crucial to avoid any actions that could worsen the bleeding or harm the mother and baby. Therefore, initiation of pushing is not appropriate in this situation.

C. Examination to determine cervical status:

While cervical examinations are important during labor to assess progress and determine readiness for delivery, they are not appropriate in cases of suspected placenta previa with active vaginal bleeding. Cervical examinations can potentially increase bleeding and should be avoided until the placental location and stability are assessed through ultrasound or other diagnostic methods. Therefore, examination to determine cervical status is not appropriate in this situation.

D. A magnesium sulfate infusion:

Magnesium sulfate infusion is not indicated for suspected placenta previa with significant vaginal bleeding. Magnesium sulfate is commonly used to prevent or manage preterm labor and certain hypertensive disorders during pregnancy but is not a treatment for placenta previa or its associated bleeding. Immediate preparation for cesarean birth is the priority in this situation to ensure the safety of the mother and baby. Therefore, a magnesium sulfate infusion is not appropriate in this situation.

Explanation:

A. Assess maternal blood glucose:

While assessing blood glucose levels is important in clients receiving magnesium sulfate due to its potential effects on blood sugar, it is not the priority action in this scenario. The client's respiratory rate of 10/min and absent deep-tendon reflexes are signs of magnesium sulfate toxicity, which can lead to respiratory depression and neuromuscular effects. Therefore, the immediate concern is addressing the magnesium toxicity rather than assessing blood glucose levels.

B. Place the client in Trendelenburg position:

Placing the client in Trendelenburg position is not indicated for magnesium toxicity. The Trendelenburg position involves placing the client in a supine position with the legs elevated higher than the head. While this position may be used in some situations (e.g., hypotension), it is not appropriate for treating magnesium toxicity, respiratory depression, or absent deep-tendon reflexes. Placing the client in Trendelenburg position may worsen respiratory function and is not recommended in this case.

C. Prepare for an emergency cesarean birth:

While severe preeclampsia or eclampsia may necessitate emergency cesarean birth in some cases, it is not the immediate action needed for a client experiencing respiratory depression and absent deep-tendon reflexes due to magnesium sulfate toxicity. Cesarean birth is not the appropriate response to magnesium toxicity and would not address the client's current respiratory and neuromuscular issues. Therefore, preparing for an emergency cesarean birth is not the correct action in this scenario.

D. Discontinue the medication infusion:

This is the correct action to take. A respiratory rate of 10/min and absent deep-tendon reflexes are signs of magnesium sulfate toxicity. Magnesium sulfate, while effective in preventing seizures in preeclampsia, can lead to respiratory depression and affect neuromuscular function at toxic levels. Discontinuing the medication infusion is crucial to prevent further magnesium toxicity and adverse effects on the client's respiratory and neuromuscular status. It is the immediate and priority action needed to address the client's current condition.