Predicting Opioid Use Following Discharge After Cesarean Delivery

Opioid consumption before discharge predicts outpatient opioid use in adolescents undergoing surgery

BACKGROUND

The majority of adolescents undergoing surgery report unused prescription opioids after surgery, increasing the risk of diversion, misuse, and addiction. Adult studies have demonstrated that opioid use 24 hours before discharge corresponds with opioid use at home. We hypothesized that inpatient opioid consumption is associated with outpatient opioid use in adolescents.

METHODS

Adolescents aged 13-20 years undergoing elective surgery associated with an opioid prescription were prospectively recruited. Parent-adolescent dyads were surveyed preoperatively to assess sociodemographics, health literacy, and baseline substance use, and opioid use was measured at 30- and 90-days postoperatively. Medical records were reviewed to calculate cumulative opioid use during hospitalization. Inpatient and postoperative opioid use was converted to oral morphine equivalents. Adjusting for age, sex, race, health literacy, alcohol use, pain score, and surgery, multivariable linear regression identified factors associated with outpatient oral morphine equivalent use 90 days postoperatively.

RESULTS

Overall, 103 adolescents were enrolled. Median oral morphine equivalents used from 24 and 48 hours before discharge and throughout the hospitalization were 30.8 (interquartile range:11.7-45.0), 67.5 (interquartile range:37.5-94.3), and 97.5 (interquartile range:18.0-152.7), respectively. Regression analysis demonstrated that adolescent-reported pain at discharge (P = .028) and cumulative oral morphine equivalents used 24 hours (P < .001) and 48 hours (P = .003) before discharge were significantly associated with postoperative oral morphine equivalents use at home. Oral morphine equivalents consumption 24 hours before discharge estimated cumulative oral morphine equivalents use 90 days postoperatively at a 1-to-5 ratio in 94.1% of patients.

CONCLUSION

For adolescents undergoing surgery, patient-reported pain at discharge and oral morphine equivalents administered 24 hours before discharge are associated with cumulative outpatient opioid use. Tailoring outpatient prescriptions to total oral morphine equivalent consumption 24 hours before discharge could reduce excess opioid prescribing.

Postdischarge Opioid Prescription after Cesarean: A Quality Improvement Initiative

OBJECTIVE

 This study aims to determine if adoption of a user-friendly algorithm for individualized opioid prescribing at discharge would decrease the number of opioids prescribed after cesarean delivery.

STUDY DESIGN

 As part of a quality initiative, we developed and implemented an algorithm for opioid prescribing at discharge for patients after cesarean delivery. The intervention group comprised patients delivering by cesarean in the 6 months following initiation of the intervention. The intervention group was divided into three groups based on inpatient opioid needs 24 to 48 hours after delivery. Oxycodone tablets were prescribed at discharge based on inpatient group. The control group comprised patients delivering at the same institution in the 6 months prior to initiation of the intervention. The primary outcome was number of oxycodone tablets prescribed at discharge. The secondary outcome was the proportion of patients with a pain-related encounter or additional oxycodone prescription up to 6 weeks after delivery.

RESULTS

 From July to December 2020, a total of 382 subjects met criteria for the intervention. The comparison group consisted of 391 subjects discharged from January to June 30, 2020, after cesarean. Baseline characteristics and inpatient opioid use 24 to 48 hours after delivery did not differ between the groups. Compared with the control group, subjects in the intervention group had fewer oxycodone tablets prescribed at discharge (11.1 vs. 15.8, p < 0.001). The number of pain-related encounters within 6 weeks of delivery did not differ between the intervention and comparison groups (10.5 vs. 10.3%, p = 0.82). There was no increase in the additional number of oxycodone prescriptions after discharge (4.7% in the intervention group vs. 4.3% in the control group, p = 0.81).

CONCLUSION

 Discharge opioid prescribing based on inpatient use after cesarean reduces the number of opioids prescribed without increasing the number of pain-related encounters after discharge. A simple algorithm may ensure compliance from prescribers.

KEY POINTS

· Previous research has shown that most opioids prescribed after cesarean delivery are unused after discharge. We implemented an algorithm for opioid discharge prescribing after cesarean delivery based on inpatient opioid consumption.. · Implementing an individualized approach to opioid prescribing reduced the number of tablets prescribed at discharge after cesarean delivery. The decrease in discharge prescribing did not correspond to an increase in pain-related encounters or additional narcotic prescriptions in the 6 weeks following delivery.. · The overprescription of opioids at discharge after cesarean delivery is well-established, and previous authors have found success in prescribing opioids at discharge based on inpatient use. Our study proposes a simple, reproducible algorithm for opioid prescribing at discharge after cesarean..

A personalized protocol for prescribing opioids after cesarean delivery: leveraging the electronic medical record to reduce outpatient opioid prescriptions

BACKGROUND

Although cesarean delivery is the most common surgery performed in the United States, prescribing practices for analgesia vary. Strategies to manage postpartum pain have mostly focused on the immediate postpartum period when patients are still admitted to the hospital. At discharge, most providers prescribe a fixed number of opioid tablets. Most patients do not use all the opioids that they are prescribed at hospital discharge. This leads to an excess of opioids in the community, which can ultimately lead to misuse and diversion.

OBJECTIVE

This study aimed to determine whether a transition from universal opioid prescribing to a personalized, patient-specific protocol decreases morphine milligram equivalents prescribed at hospital discharge after cesarean delivery while adequately controlling pain.

STUDY DESIGN

This was a prospective cohort study of patients undergoing cesarean delivery before and after the implementation of a personalized opioid-prescribing practice at the time of hospital discharge. Each patient was prescribed scheduled ibuprofen and acetaminophen, with a prescription for oxycodone tablets equal to 5 times the morphine milligram equivalents used in the 24 hours before discharge, calculated via an electronic order set. The previous traditional cohorts were routinely prescribed 30 tablets of acetaminophen-codeine 300/30 mg. The primary outcome was morphine milligram equivalents prescribed at discharge. A hotline to address pain control issues after discharge was established, and calls, emergency department visits, and readmissions were examined. Statistical analyses was performed using chi-square and Wilcoxon rank-sum test, with a P value of <.05 considered statistically significant.

RESULTS

Overall, 412 patients underwent cesarean delivery in the 6 weeks after initiation of the personalized prescribing protocol and were compared with 367 patients before the change. The median morphine milligram equivalents prescribed at discharge was lower with personalized prescribing (37.5 [interquartile range, 0-75] vs 135 [interquartile range, 135-135]; P<.001). Moreover, 176 patients (43%) were not prescribed opioids at discharge, which was a substantial change as all 367 patients in the traditional cohort received opioids at discharge (P<.001). Of note, 9 hotline phone calls were received; none required additional opioids after a 24-hour trial of scheduled ibuprofen, which none had taken before the call. In addition, 11 patients (2.7%) presented to the emergency department for pain evaluation, of which none required readmission or an outpatient prescription of opioids.

CONCLUSION

A personalized protocol for opioid prescriptions after cesarean delivery decreased the total morphine milligram equivalents and the number of opioid tablets at discharge, without hospital readmissions or need for rescue opioid prescriptions after discharge. Opioids released into our community will be reduced by more than 90,000 tablets per year, without demonstrable adverse effect.

Correlations of Opioid Intake During Different Predischarge Time Frames with Postdischarge Opioid Use Following Inpatient Surgery

Previous work has shown that predischarge opioid use is the most reliable and practical predictor of postdischarge opioid intake after inpatient surgery. However, the most appropriate predischarge time frame for operationalizing this relationship into more individualized prescriptions is unknown. We compared the correlations between the quantity of opioids taken during 5 predischarge time frames and self-reported postdischarge opioid intake in 604 adult surgery patients. We found that the 24-hour predischarge time frame was most strongly correlated (ρ= 0.60, P < .001) with postdischarge opioid use and may provide actionable information for predicting opioid use after discharge.

Opioid Use Following Cesarean Delivery: A Pilot Study on Patterns of Use, Storage, and Disposal

Objective The aim of this study was to describe various aspects related to opioid use and storage in the setting of at-home pain management after cesarean deliveries among an Appalachian population. Methods Women who underwent cesarean delivery (January-June 2019) at an Appalachian institution were prospectively enrolled and administered a telephone survey seven (± 3) days post-discharge. Results Of the 87 women enrolled, 40 (46%) completed the survey; 92.5% were prescribed an opioid medication, most commonly oxycodone/acetaminophen 5/325 mg. A Kruskal-Wallis H test revealed a significant association between the severity of pain that interfered with normal daily activities and the number of pills consumed [χ2(2)=6.75, p=0.034]. More than 70% of the participants (28/40) had not safely stored or disposed of their unused opioid medications. Conclusion Our findings highlight the need for interventions to educate patients on how to appropriately use, store, and dispose of unused opioids.

Best Practice Alerts Informed by Inpatient Opioid Intake to Reduce Opioid Prescribing after Surgery (PRIOR): A Cluster Randomized Multiple Crossover Trial

BACKGROUND

Overprescription of opioids after surgery remains common. Residual and unnecessarily prescribed opioids can provide a reservoir for nonmedical use. This study therefore tested the hypothesis that a decision-support tool embedded in electronic health records guides clinicians to prescribe fewer opioids at discharge after inpatient surgery.

METHODS

This study included 21,689 surgical inpatient discharges in a cluster randomized multiple crossover trial from July 2020 to June 2021 in four Colorado hospitals. Hospital-level clusters were randomized to alternating 8-week periods during which an electronic decision-support tool recommended tailored discharge opioid prescriptions based on previous inpatient opioid intake. During active alert periods, the alert was displayed to clinicians when the proposed opioid prescription exceeded recommended amounts. No alerts were displayed during inactive periods. Carryover effects were mitigated by including 4-week washout periods. The primary outcome was oral morphine milligram equivalents prescribed at discharge. Secondary outcomes included combination opioid and nonopioid prescriptions and additional opioid prescriptions until day 28 after discharge. A vigorous state-wide opioid education and awareness campaign was in place during the trial.

RESULTS

The total postdischarge opioid prescription was a median [quartile 1, quartile 3] of 75 [0, 225] oral morphine milligram equivalents among 11,003 patients discharged when the alerts were active and 100 [0, 225] morphine milligram equivalents in 10,686 patients when the alerts were inactive, with an estimated ratio of geometric means of 0.95 (95% CI, 0.80 to 1.13; P = 0.586). The alert was displayed in 28% (3,074 of 11,003) of the discharges during the active alert period. There was no relationship between the alert and prescribed opioid and nonopioid combination medications or additional opioid prescriptions written after discharge.

CONCLUSIONS

A decision-support tool incorporated into electronic medical records did not reduce discharge opioid prescribing for postoperative patients in the context of vigorous opioid education and awareness efforts. Opioid prescribing alerts might yet be valuable in other contexts.(Anesthesiology 2023; 139:186-96).

EDITOR’S PERSPECTIVE

Prospective evaluation of cerebrospinal fluid levels of β-Endorphin as a predictor of opioid use after scheduled cesarean delivery

Background

Prior laboratory work indicates that lower endogenous opioid function is associated with greater analgesic and subjective responses to opioid analgesics. We evaluated whether lower preoperative cerebrospinal uid (CSF) levels of the analgesic endogenous opioid β-Endorphin (BE) were associated with increased opioid use after cesarean delivery (CD).

Methods

We enrolled 136 pregnant women without opioid use or chronic pain who were undergoing CD under regional anesthesia. Preoperatively, participants completed validated pain measures and biospecimens were collected to assess BE levels in plasma and CSF. Postoperatively, pain measures at 48 hours and 2 weeks postpartum were assessed. We evaluated the association between CSF BE levels and total opioid use (in morphine milligram equivalents; MMEs) using linear regression controlling for confounding factors (primary analysis). In secondary analyses, we examined: 1) associations between plasma BE levels and total opioid use, and 2) associations between CSF and plasma BE levels and secondary outcomes (inpatient versus outpatient opioid use, pain intensity).

Results

Participants completed surveys with 100% response rate. The majority were non-Hispanic white (65%), college educated (58%), had private insurance (71%), and had a prior cesarean delivery (69%). Psychiatric diagnoses (depression or anxiety) were common, both currently (22%) and in the past (26%).The median total opioid use across the inpatient and 2-week postpartum follow-up period was 89.1 milligram morphine equivalents (IQR 25-138). Preoperative cerebrospinal uid β-Endorphin levels were not associated with total opioid use (beta = -0.05, SE 0.45, p = 0.64). Similar findings were noted for plasma β-Endorphin levels. cerebrospinal uid β-Endorphin levels were only weakly correlated with plasma β-Endorphin levels (r = 0.30, p < .01). Preoperative cerebrospinal uid and plasma β-Endorphin levels were both positively associated with postpartum pain measures (cerebrospinal uid: at 48 hours, beta = 0.19, SE 0.16, p < 0.05; Plasma: at 48-hours, beta = 0.02, SE 0.03, p = 0.02, and at 2-weeks, beta = 0.27, SE 0.03, p < 0.01).

Conclusions

Lower preoperative cerebrospinal uid levels of β-Endorphin are not associated with increased opioid analgesic use after scheduled cesarean delivery. It is possible that unassessed variability in baseline opioid receptor sensitivity may have confounded ability to test associations between β-Endorphin levels and opioid use outcomes.

A Personalized Opioid Prescription Model for Predicting Postoperative Discharge Opioid Needs

BACKGROUND

Opioid overprescribing after surgery is common. There is currently no universal predictive tool available to accurately anticipate postdischarge opioid need in a patient-specific manner. This study examined the efficacy of a patient-specific opioid prescribing framework for estimating postdischarge opioid consumption.

METHODS

A total of 149 patients were evaluated for a single-center retrospective cohort study of plastic and reconstructive surgery patients. Patients with length of stay of 2 to 8 days and quantifiable inpatient opioid consumption (n = 116) were included. Each patient's daily postoperative inpatient opioid consumption was used to generate a personalized logarithmic regression model to estimate postdischarge opioid need. The validity of the personalized opioid prescription (POP) model was tested through comparison with actual postdischarge opioid consumption reported by patients 4 weeks after surgery. The accuracy of the POP model was compared with two other opioid prescribing models.

RESULTS

The POP model had the strongest association (R2 = 0.899; P < 0.0001) between model output and postdischarge opioid consumption when compared to a procedure-based (R2 = 0.226; P = 0.025) or a 24-hour (R2 = 0.152; P = 0.007) model. Accuracy of the POP model was unaffected by age, gender identity, procedure type, or length of stay. Odds of persistent use at 4 weeks increased, with a postdischarge estimated opioid need at a rate of 1.16 per 37.5 oral morphine equivalents (P = 0.010; 95% CI, 1.04 to 1.30).

CONCLUSIONS

The POP model accurately estimates postdischarge opioid consumption and risk of developing persistent use in plastic surgery patients. Use of the POP model in clinical practice may lead to more appropriate and personalized opioid prescribing.

Implementation of a Patient-Tailored Opioid Prescribing Guideline in Ventral Hernia Surgery

INTRODUCTION

Opioids are commonly prescribed beyond what is necessary to adequately manage postoperative pain, increasing the likelihood of chronic opioid use, pill diversion, and misuse. We sought to assess opioid utilization and patient-reported outcomes (PROs) in patients undergoing ventral hernia repair (VHR) following the implementation of a patient-tailored opioid prescribing guideline.

METHODS

A patient-tailored opioid prescribing guideline was implemented in March of 2018 for patients undergoing inpatient VHR in a large regional healthcare system. We retrospectively assessed opioid utilization and patient-reported outcomes among patients who did (n = 42) and did not receive guideline-based care (n = 121) between March 2018 and December 2019. PROs, operative details, and patient characteristics were extracted from the Abdominal Core Health Quality Collaborative (ACHQC) registry data, and length-of-stay and prescription information were extracted from the electronic health record system at the healthcare institution.

RESULTS

The milligram morphine equivalents (MME) prescribed at discharge was lower for patients receiving guideline-based care (Median = 65, interquartile range [IQR] = 50-75) than patients receiving standard care (Median = 100, IQR = 60-150). After adjusting for patient characteristics, the odds of receiving an opioid refill after discharge did not significantly differ between patient groups (P = 0.43). Patient Reported Outcomes Measurement Information System (PROMIS) pain scores and hernia-specific quality-of-life (HerQLes) scores at follow-up also did not differ between patients receiving guideline-based care (Mean PROMIS = 57.3; Mean HerQLes = 53.1) versus those that did not (Mean PROMIS = 56.7; Mean HerQLes = 46.6).

CONCLUSIONS

Patients who received tailored, guideline-based opioid prescriptions were discharged with lower opioid dosages and did not require more opioid refills than patients receiving standard opioid prescriptions. Additionally, we found no differences in pain or quality-of-life scores after discharge, indicating the opioids prescribed under the guideline were sufficient for patients.

Factors Associated With Postoperative Opioid Prescribing After Primary Elective Cesarean Section

INTRODUCTION

Guidelines indicate the need to balance the risks of opioid prescribing with the need to adequately manage pain after cesarean section (CS). Although guidelines suggest the need for tailored opioid prescribing, it is unclear whether providers currently tailor opioid prescribing practices given patient-related factors. Thus, research is needed to first understand post-CS pain management and opioid prescribing. The objective of the present study was to identify factors related to CS discharge opioid prescriptions.

MATERIAL AND METHODS

This retrospective cohort study was approved by the Brooke Army Medical Center Institutional Review Board (San Antonio, Texas; #C.2020.094e) on June 23, 2020. Electronic health record data of healthy adult women undergoing primary elective CS, performed under regional neuraxial anesthesia at a single, academic, tertiary medical center from 2018 to 2019, were included. Multivariable regression examined patient and medical factors associated with post-CS opioid prescriptions.

RESULTS

In the present sample (N = 169), 23% (n = 39) of patients did not use opioids postoperatively, while inpatient and almost all of those patients (n = 36) received a discharge prescription for opioids with a median amount of 225 morphine milligram equivalent doses. There was a lack of evidence indicating that patient and medical factors were associated with discharge opioid dose.

CONCLUSION

Patient and medical factors were not associated with post-CS opioid prescribing. Larger studies are needed to better elucidate optimal post-CS pain management in the days and months that follow CS. Such findings are needed to better tailor opioid prescribing, consistent with clinical practice guidelines.

Shared Decision-Making Tool for Opioid Prescribing After Ambulatory Orthopedic Surgery in Veterans: A Randomized Controlled Clinical Trial

Purpose

We examined whether an educational, shared-decision-making tool designed to empower patients, individualize pain management, and maximize use of nonopioid, over-the-counter analgesics reduces opioid use and waste while maintaining adequate pain relief.

Methods

We developed an educational, shared-decision-making tool regarding postoperative pain medication for outpatient hand surgery. Patients randomized to groups with and without the tool were surveyed for 4 weeks after surgery. Survey variables included Patient-Reported Outcomes Measurement Information System pain intensity and pain interference scores, as well as the number of oxycodone or over-the-counter pills taken. Results were compared using chi-squared, Wilcoxon rank-sum, and Welch’s t tests.

Results

Fifty-three patients participated: 25 in the shared-tool group and 28 in the no-tool group. The mean age was 60 years, with more women in the no-tool group than the shared-tool group (n =17 versus 11, respectively). The shared-tool group averaged 6.4 prescribed oxycodone pills, versus 10 for the no-tool group (P < .01). The median numbers of oxycodone pills taken the first week after surgery were 2 (interquartile range, 6) for the shared-tool group and 3 (interquartile range, 6) for the no-tool group (P = .97). Patient-reported outcome measures for pain intensity and pain interference were not significantly different for weeks 1, 3, and 4 after surgery. Pain interference was significantly lower in week 2 in the shared-tool group (difference, −4.4; 95% confidence interval, −8.57 to −0.30; P = .04).

Conclusions

The shared-tool group had equivalent or better pain control and were prescribed a lower number of opioid pain pills than the no-tool group. Both groups used nonopioid medications, with no difference in the types of over-the-counter medications used. Shared decision-making strategies could be applied to other outpatient orthopedic surgical settings, and may reduce the amount of opioids prescribed without compromising pain control.

Type of study/level of evidence

Therapeutic II.

Endogenous opiates and behavior: 2020

This paper is the forty-third consecutive installment of the annual anthological review of research concerning the endogenous opioid system, summarizing articles published during 2020 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides and receptors as well as effects of opioid/opiate agonists and antagonists. The review is subdivided into the following specific topics: molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors (1), the roles of these opioid peptides and receptors in pain and analgesia in animals (2) and humans (3), opioid-sensitive and opioid-insensitive effects of nonopioid analgesics (4), opioid peptide and receptor involvement in tolerance and dependence (5), stress and social status (6), learning and memory (7), eating and drinking (8), drug abuse and alcohol (9), sexual activity and hormones, pregnancy, development and endocrinology (10), mental illness and mood (11), seizures and neurologic disorders (12), electrical-related activity and neurophysiology (13), general activity and locomotion (14), gastrointestinal, renal and hepatic functions (15), cardiovascular responses (16), respiration and thermoregulation (17), and immunological responses (18).

A Quality Improvement Project to Reduce Postcesarean Opioid Consumption

BACKGROUND

The opioid epidemic is a public health emergency in the United States, stemming in part from widespread misuse and overprescribing of opioids following surgery. Approximately 1 in 300 women with no prior exposure to opioids develops an opioid use disorder following cesarean birth. Effective management of postcesarean pain requires individualized treatment and a balance of the woman's goals for optimal recovery and ability to safely care for her newborn. The American College of Obstetricians and Gynecologists recommends a multimodal approach to pain management after cesarean birth.

METHODS

In April 2019, a multidisciplinary team was formed at New York University Langone Health to study opioid use postcesarean. The team used the Plan, Do, Study, Act process model for continuous quality improvement to launch a postcesarean pathway called "Your Plan After Cesarean," a standardized visual tool with quantifiable milestones. It facilitates integration of women's preferences in their postcesarean care, and emphasizes providers' routine use of nonpharmacological interventions to manage pain.

RESULTS

During the pilot period of the project, postcesarean high consumption of 55 to 120 mg of opioids was reduced from 25% to 8%. By January 2020, 75% of women postoperative cesarean took little-to-no opioids during their hospital stay. By February 2021, the total number of opioids consumed by women after cesarean birth in-hospital was reduced by 79%. Satisfaction among women with pain management after cesarean continued to be high.

CLINICAL IMPLICATIONS

Reduction in postcesarean opioid administration and the number of opioids prescribed at hospital discharge can be accomplished without having a negative effect on women's perceptions of post-op pain relief. These changes can potentially be a factor in helping to avoid an opioid-naive woman who has a cesarean birth from developing an opioid use disorder.