The management of breakthrough pain during labour

Is breakthrough pain better managed by adding programmed intermittent epidural bolus to a background infusion during labor epidural analgesia? A randomized controlled trial

BACKGROUND

Breakthrough pain (BTP) is a common problem during labor analgesia. Programmed intermittent epidural bolus (PIEB) has demonstrated superior to background epidural infusion (BEI) concerning BTP, but the effect of combining both modes remains unknown. We hypothesized that this combination could reduce BTP incidence.

METHODS

Nulliparous parturients with early cervical dilation were randomized to receive 5 mL/h BEI of levobupivacaine 0.125% plus fentanyl 1.45 µg/mL (standard group) or 5 mL/h BEI + 10 mL/h PIEB (PIEB group). In case of BTP, patient-controlled epidural analgesia (PCEA) boluses of 10 mL (20-min lockout interval) were administered. If PCEA was insufficient, a 10-mL clinician bolus was delivered. The primary endpoint was the percentage of parturients who required supplementary epidural boluses.

RESULTS

One hundred and twenty women were recruited. Eighty-nine percent of parturients required supplementary boluses in standard group versus 30% in PIEB group (RR=3.07; 95% CI: 1.99-4.76; P<0.001). Adding PIEB prevented BTP in 70% of cases. Duration of effective analgesia was longer in PIEB than in standard group (P=0.003). Supplementary boluses were decreased (P<0.001), while local anesthetic consumption increased (P<0.001) by PIEB addition. Sensory-motor block, mode of delivery, maternal satisfaction and neonatal outcomes were equally distributed in both groups.

CONCLUSIONS

Adding PIEB to BEI+PCEA improved labor analgesia by significantly reducing the needs of rescue analgesia and prolonging the duration of effective analgesia. This combination provoked a higher consumption of local anesthetic with no detected clinical consequences.

Nitrous Oxide Utility in Labor and Birth: A Multipurpose Modality

The use of nitrous oxide (N2O) for labor and birth has very recently emerged as a viable modality in the United States, despite a long history of use in Canada and Europe. Usually associated with dental procedures, there are significant differences between dental and parturition utility, efficacy, and staff exposure. In addition to using it for pain relief and anxiolysis, those centers utilizing it have noted it to be multipurpose and useful for such situations as: external cephalic version, manual removal of placenta, intravenous starts, during placement of urinary catheters and intracervical Foley bulbs. Nitrous oxide has proven to be especially helpful for repair of lacerations under local anesthesia and is a multiuse modality that should be available to women in all birth settings. This article explores the history of N2O use, provides a comparison of obstetrical use to use in the dental industry, examines the contraindications to, and implications for usage, and discusses logistical points of consideration for clinicians working with women using N2O for labor and birth.

Efficacy of warm showers on labor pain and birth experiences during the first labor stage

OBJECTIVE

To determine the efficacy of warm showers on parturition pain and the birth experiences of women during the first stage of labor.

DESIGN

Randomized controlled trial (RCT).

SETTING/PARTICIPANTS

The study was conducted from July 10, 2010 to January 12, 2011 in the maternity ward of a Taipei City regional teaching hospital, site of approximately 220 to 250 births per month. Ninety-two expectant mothers were recruited (recruitment rate: 70.8%) and allocated by block randomization into the two arms of the study. In total, 80 women completed the trial: 41 in the control group and 39 in the experimental group.

METHODS

Participants in the experimental group received warm shower bath interventions. Each shower lasted 20 minutes. After a 5-minute full body or lower back shower, participants could spend 15 minutes directing shower water toward any body region that felt most comfortable. Facilities allowed participants to stand and sit as desired. Water was constantly monitored and maintained at a temperature of 37°C. Participants in the control group received standard childbirth care.

RESULTS

Labor pain and the birth experience were assessed using the Visual Analogue Scale for Pain (VASP) and the Labour Agentry Scale, respectively. After adjusting for demographic and obstetric data, experimental-group women who participated in warm showers reported significantly lower VASP scores at 4-cm and 7-cm cervical dilations, and higher birth experiences than the control group.

CONCLUSION

Apart from the positive physical hygiene effects, warm showers are a cost-effective, convenient, easy-to-deploy, nonpharmacological approach to pain reduction. This intervention helps women in labor to participate fully in the birthing process, earn continuous caregiver support, feel cared for and comforted, and have a more positive overall experience.

Nitrous oxide as labor analgesia: clinical implications for nurses

A new interest in self-administered nitrous oxide for labor analgesia has emerged in recent years in the United States. It has been used widely in Europe for decades, with favorable results. The American College of Nurse-Midwives published a position statement in 2010 supporting the practice of self-administered nitrous oxide as an additional analgesia choice for laboring women. Recent literature on this subject has been directed toward midwives, obstetricians and/or anesthesiologists, with little emphasis for labor and delivery nurses. This article presents highlights of nursing care for women using self-administered nitrous oxide during labor and birth.