In May 2001 family physicians, obst...

In May 2001 family physicians, obstetrician-gynecologists, anesthesiologists, nurse-midwives and childbirth educators met at the Nature and Management of Labor Pain symposium sponsored from the Maternity Center Association and recently made known York Academy of Medicine. Participants discussed presentations forward the nature of labor pain, the history of anesthesia for childbirth, maternal satisfaction with childbirth, and the character of maternal choice. Commissioned systematic reviews focused forward methods of labor pain management, including nonpharmacologic techniques, parenteral opiates, epidural analgesia, paracervical obstruct and nitrous oxide. Part II of this two-part article focuses forward the use of parenteral opioids, epidural analgesia, and other pharmacologic orderly dispositions of pain relief.

Parenteral Opioids

Despite used by all use and decades of research, there remains a paucity of data regarding the safety and efficacy of opioids for labor analgesia. Parenteral narcotics are used to alleviate pain in 39 to 56 percent of labors in U hospitals. (1) Bricker and Lavender's meta-analysis (2) included all randomized controll trials (RCTs) of parenteral opioids for labor pain relief. Primary maternal consequences included maternal satisfaction with pain relief single to two hours after mix with drugs administration and characteristics of the labor process; secondary results included subsequent use of epidural analgesia, adverse symptoms (eg nausea, drowsiness), inability to urinate or participate in labor, cesarean delivery or instrument-assisted vaginal delivery, and maternal qualitative issues such as satisfaction with the overall birth experience. (2) [Evidence of the same height A, systematic review] Neonatal issues focused on respiratory depression, use of naloxone (Narcan), and feeding and bonding problems

Meperidine (Demerol) has been extensively studied, on the other hand few trials have examined the effectiveness and safety of shorter acting agents like as fentanyl (Sublimaze). Little evidence supports the use of individual opioid over another. The safety and effectiveness of alternative customs of opioid administration, such as patient-controlled analgesia cross-questions have not been demonstrated.

single one RCT, (3) performed in the early 1960 has studied parenteral opioids compared with placebo. Although opioids did provide superior pain relief and maternal satisfaction with pain management, the power was small. Several RCTs have compared opioids with epidural analgesia. Statistically significant findings in the meta-analysis (2) indicate that the use of parenteral opioids is associated with lower rates of oxytocin augmentation, shorter stages of labor, and fewer cases of malposition and instrument-assisted delivery. Compared with epidural analgesia, parenteral opioids provide les pain relief and satisfaction with pain relief at all stages of labor. (4-6) [Reference 6--Evidence horizontal A, RCT]

Bricker and Lavender (2) fix a lack of data to measure infant safety. However, observational studies indicate that opioids are associated with neonatal respiratory depression, decreased alertness, inhibition of sucking, lower neurobehavioral scores, and a delay in effective feeding. (78) Long-term purports cannot be excluded.

There is a ne for research that compares opioids with other orderly dispositions of labor pain management similar as continuous support and hydrotherapy. issues should focus on pain experience and maternal satisfaction, if it were not that also on labor, and neonatal and adverse effects

Epidural Analgesia

Epidural analgesia is an effective [i]modus operandi[/i] of pain management that is adaptable to the varied pain patterns fighted by women during labor. (9) The increasing popularity of epidural analgesia may be a end of its greater pain-relief efficacy compared with that of parenteral opioids and its ability to befitting current social, logistic, and political demands. A joint position statement (10) from the American literary institution [i]or[/i] seminary of learning of Obstetricians and Gynecologists and the American Society of Anesthesiologists meditates a prevailing viewpoint: "Labor springs in severe pain for many women There is no other circumstance where it is considered acceptable for a somebody to experience untreated severe pain, amenable to safe intervention, while beneath a physician's care. ...[M]aternal beseech is a sufficient medical indication for pain relief during labor."

Epidural local anesthetics theoretically could mould 100 percent of labor pain if used in large contortions and high concentrations. However, pain relief is balanced against other goals so as walking during the first stage of labor, pushing effectively in the inferior stage, and minimizing maternal or neonatal side meanings Changes in epidural drugs and techniques have been disentangleed to optimize pain control while minimizing side imports To decrease motor blockade, bupivacaine (Sensorcaine) and ropivacaine (Naropin) have replaced lidocaine (Xylocaine), and put drugs into concentrations have been lowered. (9)

Administration of an intrathecal opioid injection before continuous epidural infusion is known as combined spinal epidural (CSE) analgesia, (11) or the walking epidural. However, women who receive this shadow of epidural often are not able to walk because of substantial motor blockade and the ne for continuous fetal monitoring after epidural placement. Advantages of CSE include rapid attack of pain relief and the potential for the intrathecal medication to suffice as a individual anesthetic in women who are likely to deliver within sum of two units or three hours of receiving it. (12)