A woman received 50 mcg of fentanyl intravenously 1 hour before delivery. What drug should the nurse have readily available?

A. Nalbuphine (Nubain):Nalbuphine is an opioid agonist-antagonist, which can be used to treat moderate to severe pain. However, it is not specifically used to reverse the effects of fentanyl. Administering Nalbuphine could potentially complicate the situation by introducing another opioid into the system.

B. Naloxone (Narcan):Naloxone is an opioid antagonist that rapidly reverses the effects of opioids like fentanyl. It is the standard treatment for opioid overdose and can quickly restore normal respiration in a person whose breathing has slowed or stopped due to opioid use. This makes it the most appropriate drug to have readily available in this scenario.

C. Butorphanol (Stadol):Butorphanol is another opioid agonist-antagonist used for pain relief. Similar to Nalbuphine, it is not used to reverse opioid effects and could complicate the patient's condition by adding another opioid to the system.

D. Promethazine (Phenergan):Promethazine is an antihistamine used to treat nausea, vomiting, and allergies. It does not have any properties that would counteract the effects of fentanyl. Therefore, it would not be useful in reversing opioid-induced respiratory depression.

A. Right occiput posterior position: This position refers to the baby's head being down but facing the mother's back, which can make labor more challenging but is not a contraindication for amniotomy.

B. -2 station: This indicates that the baby's head is not yet engaged in the pelvis. While it can complicate labor, it is not an absolute contraindication for amniotomy, though caution is advised.

C. Cephalic presentation: This is the most common and favorable position for delivery, where the baby's head is down and ready for birth. It is not a contraindication for amniotomy.

D. Dilation less than 3 cm: This is a contraindication for amniotomy because the cervix is not sufficiently dilated, which can increase the risk of complications such as infection or prolonged labor.