With regard to systemic analgesics administered during labor, nurses should be aware that:
Systemic analgesics cross the maternal blood-brain barrier as easily as they do the fetal blood-brain barrier.
Effects on the fetus and newborn can include decreased alertness and delayed sucking
Intravenous (IV) patient-controlled analgesia (PCA) results in increased use of an analgesic
Intramuscular (M) administration is preferred over IV administration
The Correct Answer is B
A. Systemic analgesics cross the maternal blood-brain barrier as easily as they do the fetal blood-brain barrier. While systemic analgesics do cross the placenta, they actually affect the fetus more readily than the mother because the fetal liver and kidneys are immature, making drug metabolism and excretion slower. This leads to prolonged effects on the newborn.
B. Effects on the fetus and newborn can include decreased alertness and delayed sucking. Opioid analgesics, such as fentanyl, meperidine, or morphine, can cause neonatal respiratory depression, reduced alertness, and difficulty initiating breastfeeding due to delayed sucking reflex. If administered too close to delivery, the newborn may require respiratory support or naloxone to reverse opioid effects.
C. Intravenous (IV) patient-controlled analgesia (PCA) results in increased use of an analgesic. PCA allows controlled dosing of pain medication, often leading to less total medication use because the patient receives smaller, more frequent doses rather than large, single doses. This helps maintain stable pain control without excessive sedation.
D. Intramuscular (IM) administration is preferred over IV administration. IV administration is preferred over IM because it provides faster pain relief and better dose control. IM injections have delayed absorption and an unpredictable effect, making IV the preferred route for labor analgesia.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Weight gain of 4 pounds in a month. A weight gain of 4 pounds in a month is within the expected range for pregnancy, especially in the third trimester. While rapid or excessive weight gain could indicate fluid retention and worsening heart failure, this amount alone is not immediately concerning.
B. Dyspnea with walking. Dyspnea on exertion in a pregnant woman with congestive heart disease is a serious concern. It may indicate pulmonary congestion, worsening heart failure, or reduced cardiac output. Any increasing shortness of breath, especially with minimal activity, should be reported immediately to prevent complications like pulmonary edema or decompensated heart failure.
C. Presence of striae gravidarum. Striae gravidarum (stretch marks) are a normal skin change in pregnancy due to rapid growth and stretching of the skin. They are not related to congestive heart disease and do not require reporting.
D. Patellar reflexes of +2. A +2 deep tendon reflex (DTR) is normal and does not indicate worsening cardiac status. Reflex abnormalities are more relevant in conditions such as preeclampsia, where hyperreflexia can signal worsening disease, but they are not a concern in heart disease.
Correct Answer is A
Explanation
A. Perform vaginal exam and apply upward digital pressure to the presenting part. A prolapsed umbilical cord is an obstetric emergency that can lead to cord compression and fetal hypoxia. The priority intervention is for the nurse to manually lift the presenting part (usually the fetal head) off the cord to relieve pressure and restore blood flow. The nurse should maintain this position until an emergency cesarean section is performed.
B. Immediately turn the client to her side. Positioning changes, such as the knee-chest or Trendelenburg position, can help relieve pressure on the cord, but they are secondary to manually lifting the presenting part. While turning the client may assist, it is not the most immediate life-saving action.
C. Call the physician immediately. While notifying the provider is essential, relieving pressure on the umbilical cord takes priority. Delaying intervention to make a call could result in prolonged fetal hypoxia and compromise.
D. Place a moist, clean towel over the cord to prevent drying. Covering the cord with a moist towel helps prevent vasospasm and drying, but it does not relieve the compression that is cutting off oxygen to the fetus. The priority is to relieve pressure on the cord first before taking other measures.
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