Overview
Introduction
Systemic opioid analgesics provide moderate labor pain relief; they reduce but do not eliminate pain.
Systemic opioid analgesics provide moderate labor pain relief; they reduce but do not eliminate pain. Common agents include morphine, meperidine, fentanyl, butorphanol, and nalbuphine, given intravenously or intramuscularly. Because opioids cross the placenta and depress respirations in both mother and newborn, the nurse must monitor closely, know the threshold for withholding a dose, and be prepared to reverse respiratory depression. The central safety concern, respiratory depression, drives every priority in this topic. Timing and history matter as much as the drug itself. Opioids given too close to delivery sedate the newborn and impair the first breaths, so providers time administration to avoid peak effect at birth. A careful substance-use history is essential because reversal with naloxone can precipitate dangerous withdrawal in opioid-dependent clients. Consider a case: you are the nurse caring for a laboring client who received intravenous morphine and now has a respiratory rate of 10. Which action is the priority? You withhold further opioid, notify the provider, and prepare naloxone for the reversal of opioid-induced respiratory depression, while supporting the airway and continuing to monitor mother and fetus.