Comparison of 3 protocols for analgesia control after cesarean delivery: a randomized controlled trial

Understanding the Postpartum Cesarean Pain Experience Among Individuals With Publicly Funded Insurance: A Qualitative Investigation

INTRODUCTION

Pain is the most common postpartum concern and has been associated with adverse outcomes, such as difficulty with neonatal bonding, postpartum depression, and persistent pain. Furthermore, racial and ethnic disparities in the management of postpartum pain are well described. Despite this, less is known regarding patients' lived experiences regrading postpartum pain. The purpose of this study was to assess patient experiences related to postpartum pain management after cesarean birth.

METHODS

This is a prospective qualitative study of patients' experiences with postpartum pain management after cesarean birth at a single large tertiary care center. Individuals were eligible if they had publicly funded prenatal care, were English or Spanish speaking, and underwent a cesarean birth. Purposive sampling was used to ensure a racially and ethnically diverse cohort. Participants underwent in-depth interviews using a semistructured interview guide at 2 time points: postpartum day 2 to 3 and 2 to 4 weeks after discharge. Interviews addressed perceptions and experiences of postpartum pain management and recovery. Data were analyzed using the constant comparative method.

RESULTS

Of 49 participants, 40.8% identified as non-Hispanic Black and 40.8% as Hispanic. The majority (59.2%) had experienced a cesarean birth with a prior pregnancy. Thematic analysis yielded 2 overarching domains: (1) experience of pain after cesarean birth and (2) pain management and opioid use after cesarean birth. Themes related to the experience of pain included pain as a meaningful experience, pain not aligned with expectations, and limitations caused by pain. All participants discussed limitations caused by their pain, voicing frustration with pursuing activities of daily living, caring for home and family, caring for neonate, and impact on mood. Themes related to pain management and opioid use addressed a desire for nonpharmacologic pain management, positive and negative experiences using opioids, and hesitancy and perceived judgement regarding opioid use. Several participants described experiences of judgement regarding the request for opioids and needing stronger pain medications, such as oxycodone.

DISCUSSION

Understanding experiences regarding postpartum cesarean pain management and recovery is essential to improving patient-centered care. The experiences identified by this analysis highlight the need for individualized postpartum pain management, improved expectation counseling, and the expansion of multimodal pain management options.

Epidural esketamine and morphine for postoperative analgesia after caesarean delivery: A pilot study

Objective

The aim of this study was to determine whether the addition of esketamine to morphine would improve postoperative analgesia after cesarean section.

Methods

Parturients who planned for a cesarean delivery using combined spinal-epidural anesthesia with a request for postoperative anesthesia were randomly divided into four groups (A, B, C, and D). When the surgery was completed, the parturients in groups A, B, C, and D were administered 2 mg morphine, 0.25 mg/kg of esketamine, 0.25 mg/kg of esketamine plus 2 mg morphine hydrochloride, and 0.25 mg/kg of esketamine plus 1 mg morphine through the epidural catheters, respectively. The postoperative pain at rest, pain with movement, the number of rescue analgesics, and adverse effects were evaluated for 48 h after cesarean delivery.

Results

A total of 119 parturients were included in this study, including 30 cases in group A, 30 cases in group B, 30 cases in group C, and 29 cases in group D. All visual analog scale (VAS) scores at rest and with movement were much lower in group C as compared with those in group A and group B (P < 0.05). Moreover, VAS scores at rest were also lower in Group C than in group D for 24 h (P < 0.05). Corresponding to the low pain scores, parturients in group C also required less rescue analgesia as compared with the other three groups (P = 0.021 for C vs. A, P < 0.001 for C vs. B, and P < 0.001 for C vs. D). There were no statistically significant differences between the four study groups with regard to the incidence of adverse events (P > 0.05).

Conclusions

The addition of esketamine to morphine improved postoperative analgesia after cesarean section without increasing the incidence of adverse events.

Use of Scheduled Nonopioid Analgesia to Decrease Inpatient Opioid Consumption After Scheduled Cesarean Birth

OBJECTIVE

To compare opioid use and pain scores in women who had scheduled cesarean birth before and after implementing a scheduled nonopioid analgesia practice guideline.

DESIGN

Quality improvement project with a comparison of pre-/postintervention.

SETTING/LOCAL PROBLEM

A 170-bed community hospital where the administration of postcesarean pain medications was unstandardized.

PARTICIPANTS

Convenience sample of 175 individuals who were scheduled for cesarean birth (106 in preintervention group and 69 in postimplementation group).

INTERVENTION/MEASUREMENTS

All participants had received a dose of 150 mcg of intrathecal morphine intraoperatively. Care of participants in the postimplementation group included a new practice guideline using preoperative oral acetaminophen 1 g and postoperative intravenous ketorolac 30 mg that transitioned to ibuprofen 600 mg orally every 6 hours until discharge. Acetaminophen 1 g every 6 hours also continued until discharge. For breakthrough pain, oxycodone 5 mg to 10 mg was available.

RESULTS

Results were analyzed using the chi-square and t test. There was a statistical difference in the mean milligram morphine equivalent consumed after scheduled cesarean birth (preintervention = 21.15 vs. postintervention = 3.91, p < .001). Postimplementation, 84.1% of participants did not consume any opioids beyond the intrathecal dose compared to 47.2% of participants preintervention. Mean pain scores decreased from 2.49 to 1.62 (p < .001), and there was an observed decrease of the highest reported pain score from 5.39 to 4.03 (p < .001).

CONCLUSION

The results of this project support the current literature indicating that the administration of a scheduled nonopioid multimodal analgesia regimen to individuals with scheduled cesarean birth is an effective postoperative pain management strategy. This approach to managing surgical birth pain can decrease subjective reports of pain and overall opioid consumption during the hospital stay.

Influence of Catheter-Incision Congruency in Epidural Analgesia on Postcesarean Pain Management: A Single-Blinded Randomized Controlled Trial

Patient-controlled epidural analgesia (PCEA) or epidural morphine may alleviate postcesarean pain; however, conventional lumbar epidural insertion is catheter–incision incongruent for cesarean delivery. Methods: In total, 189 women who underwent cesarean delivery were randomly divided into four groups (low thoracic PCEA, lumbar PCEA, low thoracic morphine, and lumbar morphine groups) for postcesarean pain management. Pain intensities, including static pain, dynamic pain, and uterine cramp, were measured using a 100 mm visual analog scale (VAS). The proportion of participants who experienced dynamic wound pain with a VAS score of >33 mm was evaluated as the primary outcome. Adverse effects, including lower extremity blockade, pruritus, postoperative nausea and vomiting, sedation, and time of first passage of flatulence, were evaluated. Results: The low thoracic PCEA group had the lowest proportion of participants reporting dynamic pain at 6 h after spinal anesthesia (low thoracic PCEA, 28.8%; lumbar PCEA, 69.4%; low thoracic morphine, 67.3%; lumbar morphine group, 73.9%; p < 0.001). The aforementioned group also reported the most favorable VAS scores for static, dynamic, and uterine cramp pain during the first 24 h after surgery. Adverse effect profiles were similar among the four groups, but a higher proportion of participants in the lumbar PCEA group (approximately 20% more than in the other three groups) reported prolonged postoperative lower extremity motor blockade (p = 0.005). In addition, the first passage of flatulence after surgery reported by the low thoracic PCEA group was approximately 8 h earlier than that of the two morphine groups (p < 0.001). Conclusions: Epidural congruency is essential to PCEA for postcesarean pain. Low thoracic PCEA achieves favorable analgesic effects and may promote postoperative gastrointestinal recovery without additional adverse effects.

Number and quality of randomized controlled trials in obstetrics published in the top general medical and obstetrics and gynecology journals

BACKGROUND

There has been an increasing number of randomized controlled trials published in obstetrics and maternal-fetal medicine to reduce biases of treatment effect and to provide insights on the cause-effect of the relationship between treatment and outcomes.

OBJECTIVE

This study aimed to identify obstetrical randomized controlled trials published in top weekly general medical journals and monthly obstetrics and gynecology journals, to assess their quality in reporting and identify factors associated with publication in different journals.

STUDY DESIGN

The 4 weekly medical journals with the highest 2019 impact factor (New England Journal of Medicine, The Lancet, The Journal of the American Medical Association, and British Medical Journal), the top 4 monthly obstetrics and gynecology journals with obstetrics-related research (American Journal of Obstetrics & Gynecology, Ultrasound in Obstetrics & Gynecology, Obstetrics & Gynecology, and the British Journal of Obstetrics and Gynaecology), and the American Journal of Obstetrics & Gynecology Maternal-Fetal Medicine were searched for obstetrical randomized controlled trials in the years 2018 to 2020. The primary outcome was the number of obstetrical randomized controlled trials published in the obstetrics and gynecology journals vs the weekly medical journals and the percentage of trials published, overall and per journal. The secondary outcomes included the proportion of positive vs negative trials overall and per journal and the assessment of the study characteristics of published trials, including quality assessment criteria.

RESULTS

Of the 4024 original research articles published in the 9 journals during the 3-year study period, 1221 (30.3%) were randomized controlled trials, with 137 (11.2%) randomized controlled trials being in obstetrics (46 in 2018, 47 in 2019, and 44 studies in 2020). Furthermore, 33 (24.1%) were published in weekly medical journals, and 104 (75.9%) were published in obstetrics and gynecology journals. The percentage of obstetrical randomized controlled trials published ranged from 1.5% to 9.6% per journal. Overall, 34.3% of obstetrical trials were statistically significant or "positive" for the primary outcome. Notably, 24.8% of the trials were retrospectively registered after the enrollment of the first study patient. Trials published in the 4 weekly medical journals enrolled significantly more patients (1801 vs 180; P<.001), received more often funding from the federal government (78.8% vs 35.6%; P<.001), and were more likely to be multicenter (90.9% vs 42.3%; P<.001), non-United States based (69.7% vs 49.0%; P=.03), and double blinded (45.5% vs 18.3%; P=.003) than trials published in the obstetrics and gynecology journals. There was no difference in study type (noninferiority vs superiority) and trial quality characteristics, including pretrial registration, ethics approval statement, informed consent statement, and adherence to the Consolidated Standards of Reporting Trials guidelines statement between studies published in weekly medical journals and studies published in obstetrics and gynecology journals.

CONCLUSION

Approximately 45 trials in obstetrics are being published every year in the highest impact journals, with one-fourth being in the weekly medical journals and the remainder in the obstetrics and gynecology journals. Only about a third of published obstetrical trials are positive. Trials published in weekly medical journals are larger, more likely to be funded by the government, multicenter, international, and double blinded. Quality metrics are similar between weekly medical journals and obstetrics and gynecology journals.

Opioid use after cesarean: a cohort study comparing combined versus separate oxycodone and acetaminophen regimens

OBJECTIVE

To determine whether an inpatient post-cesarean analgesic regimen which separated oxycodone and acetaminophen resulted in less inpatient opioid use, when compared to a regimen using combination medications containing both acetaminophen and oxycodone in a cohort including patients of all gestational ages, acuity levels, and modes of operative anesthesia.

METHODS

This is a retrospective cohort study which was conducted at a single tertiary care center Labor and Delivery unit. Data were collected via retrospective chart review, and a total of 170 records were examined with a final N = 150. Inclusion criteria were all patients over the age of 18, and >23.0 weeks gestational age, who had a singleton or twin cesarean delivery regardless of their mode of operative anesthesia and whether or not they received intrathecal opioid at time of delivery. Exclusion criteria were pregnancies of higher-level multiples (triplets or greater), prolonged intensive care unit (ICU) stay, and patients who received both combination oxycodone-acetaminophen and separately administered oxycodone. For analysis patients were classified into two groups: the "Combined Medication" group representing patients who received combination oxycodone-acetaminophen medication only (n = 83) and the "Separate Medication" group representing patients who received oxycodone and acetaminophen separately (n = 67). Differences between the groups with respect to opioid use and acetaminophen use were assessed.

RESULTS

The primary outcome was inpatient opioid medication use per 12-h period in intravenous morphine mg equivalents (MME). Patients received an average of 4.6 ± 3.5 MME IV morphine per 12 h in the Separate Medication group and 5.7 ± 3.7 MME IV morphine per 12 h in the Combined Medication group. When controlled for several covariates, the Separate Medication group took significantly fewer MME per 12-h period (mean difference = -1.2, 95% CI: (-2.3, -0.1), p = .04). There was no appreciable difference in acetaminophen utilization between groups.

CONCLUSIONS

An analgesic regimen where oxycodone is ordered separately from acetaminophen is associated with reduced inpatient opioid medication use in patients of all gestational ages, acuity levels, and modes of operative anesthesia.