Postoperative Opioid Use Research Articles

Robotic living donor nephrectomy is associated with reduced post-operative opioid use compared to hand-assisted laparoscopic approach.

Robotic donor nephrectomy (RDN) has emerged as a safe alternative to laparoscopic donor nephrectomy (LDN). Having previously demonstrated comparable efficacy, this study aims to examine postoperative analgesia use (opioid and non-opioid) in the two groups. We conducted a retrospective review of 300 living donor nephrectomies performed at our center, comparing 150 RDN's with a contemporary cohort of 150 hand-assisted LDN's. In addition to clinical and demographic information, data on postoperative inpatient opioid and non-opioid analgesia (from patient's arrival to the surgical floor after surgery till the time of discharge) was collected. Opioid dosages were standardized by conversion to morphine milligram equivalents (MME). All patients were managed post-operatively under a standardized ERAS pathway for living donor nephrectomy patients. There were no significant differences in donor age, gender, and BMI between RDN and LDN groups. Total post-operative opioid use (MME's) was significantly lower in RDN patients (RDN 27.1 vs. LDN 46.3; P < 0.0001). Breakdown of opioid use with post-operative (POD) day demonstrated significantly lower use in RDN group on POD1 (RDN 8.6 vs. LDN 17.0; P < 0.05), and POD2 (RDN 3.9 vs LDN 10; P < 0.05). RDN patients had a shorter post-operative length of stay (LOS) (RDN 1.69days vs. LDN 1.98; P = 0.0003). There were no differences between groups in non-opioid medication use, complications, and readmission rates. RDN has comparable safety to hand-assist LDN and offers additional benefits of lower postoperative opioid requirement and a shorter hospital LOS.

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

BackgroundThe 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. MethodsAdolescents 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. ResultsOverall, 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. ConclusionFor 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.

Experiences and perspectives of adults on using opioids for pain management in the postoperative period: A scoping review.

Opioids play an important role in peri-operative pain management. However, opioid use is challenging for healthcare practitioners and patients because of concerns related to opioid crises, addiction and side effects. This review aimed to identify and synthesise the existing evidence related to adults' experiences of opioid use in postoperative pain management. Systematic scoping review of qualitative studies. Inductive content analysis and the Theoretical Domains Framework (TDF) were applied to analyse and report the findings and to identify unexplored gaps in the literature. Ovid MEDLINE, PsycInfo, Embase, CINAHL (EBSCO), Cochrane Library and Google Scholar. All qualitative and mixed-method studies, in English, that not only used a qualitative approach that explored adults' opinions or concerns about opioids and/or opioid reduction, and adults' experience related to opioid use for postoperative pain control, including satisfaction, but also aspects of overall quality of a person's life (physical, mental and social well being). Ten studies were included; nine were qualitative ( n = 9) and one used mixed methods. The studies were primarily conducted in Europe and North America. Concerns about opioid dependence, adverse effects, stigmatisation, gender roles, trust and shared decision-making between clinicians and patients appeared repeatedly throughout the studies. The TDF analysis showed that many peri-operative factors formed people's perceptions and experiences of opioids, driven by the following eight domains: Knowledge, Emotion, Beliefs about consequences, Beliefs about capabilities, Self-confidence, Environmental Context and Resources, Social influences and Decision Processes/Goals. Adults have diverse pain management goals, which can be categorised as proactive and positive goals, such as individualised pain management care, as well as avoidance goals, aimed at sidestepping issues such as addiction and opioid-related side effects. It is desirable to understand the complexity of adults' experiences of pain management especially with opioid use and to support adults in achieving their pain management goals by implementing an individualised approach, effective communication and patient-clinician relationships. However, there is a dearth of studies that examine patients' experiences of postoperative opioid use and their involvement in opioid usage decision-making. A summary is provided regarding adults' experiences of peri-operative opioid use, which may inform future researchers, healthcare providers and guideline development by considering these factors when improving patient care and experiences.

Comparison of Suprainguinal Fascia Iliaca Nerve Block and Epidural Analgesia in Patients Undergoing Periacetabular Osteotomy.

Adequate pain control and early mobilization are critical in the postoperative period after periacetabular osteotomy (PAO). Regional anesthesia can reduce postoperative pain, but certain techniques can increase the risk of postoperative motor block and delayed functional recovery. Continuous lumbar epidurals can provide excellent analgesia but also create challenges with early ambulation. Recently, suprainguinal fascia iliaca (SIFI) single-shot blocks have been shown to provide effective analgesia in PAO patients. The goal of this study was to compare opioid use, time to achieve inpatient physical therapy (PT) goals, and length of stay (LOS) between a cohort of patients receiving SIFI blocks and a cohort of patients receiving epidural analgesia (EA). This retrospective single-surgeon comparative cohort study included all patients who underwent a PAO between 2012 and 2022. Regional anesthetic technique (SIFI vs EA), length of hospital stay, intraoperative and postoperative opioid use, pain scores, and time to achievement of PT milestones before discharge were recorded. Patients were excluded if they had any preexisting neuromuscular syndrome or neurosensory deficit. All opioid use was converted to morphine-milligram equivalents using standard conversions. Two hundred four surgeries were done over the study period; 164 patients received EA, and 40 received a SIFI block. The average age of our cohort was 19.5 years (±6 yrs). The SIFI cohort had a significantly shorter mean LOS than the EA cohort (2.9 vs 4.1 days, P < 0.001). Patients in the SIFI cohort achieved all PT ambulation goals significantly sooner than the lumbar epidural group (P < 0.001), with lower total opioid use on each postoperative day. No notable differences were observed in sex, race, BMI, or pain scores at inpatient PT visits before discharge. After PAO surgery, the SIFI block is associated with shorter hospital LOS, reduced postoperative opioid use, and earlier mobilization when compared with those who were managed with an epidural.

The Enhanced Recovery after Surgery Approach in Heart Valve Surgery: A Systematic Review of Clinical Studies.

Background: Enhanced recovery after surgery (ERAS) protocols aim to reduce postoperative complications and promote earlier recovery. Although it is well established in noncardiac surgery fields, the ERAS approach has only recently been adopted in cardiac surgery. The aim of this review is to evaluate the status and implementation of ERAS protocols in patients undergoing heart valve surgery and to summarise associated clinical results. Methods: A literature search for the period January 2015 and January 2024 was performed through online databases. Clinical studies (randomised controlled trials and cohort studies) on patients undergoing heart valve surgical procedures and comparing ERAS and conventional approaches were included. The data extracted covered studies and populations characteristics, early outcomes and the features of each ERAS protocol. Results: There were 14 studies that fulfilled the final search criteria and were ultimately included in the review. Overall, 5142 patients were identified in the 14 studies, with 2501 in ERAS groups and 2641 patients who were representative of control groups. Seven experiences exclusively included patients who underwent heart valve surgery. Twelve out of fourteen protocols involved multiple interventions from the preoperative to postoperative phase, while two studies reported actions limited to intraoperative and postoperative care. We found high heterogeneity among the included protocols regarding key actions targeted for improvement and measured outcomes. All the studies showed that ERAS pathways can be safely adopted in cardiac surgery and in most of the experiences were associated with shorter mechanical ventilation time, reduced postoperative opioid use and reduced ICU and hospital stays. Conclusions: As demonstrated in noncardiac surgery, the adoption of structured ERAS protocols has the potential to improve results in patients undergoing heart valve surgery. Further evidence based on larger populations is needed, including more homogenous pathways and reporting further outcomes in terms of patient satisfaction, recovery and quality of life after surgery.

It's complicated: The relationship of non-narcotic medications and postoperative opioid use in radical cystectomy patients

IntroductionThe effect of individual non-narcotic analgesics in cystectomy enhanced recovery after surgery (ERAS) is unknown. Additionally, many non-narcotic medications are associated with side effects pertinent to the cystectomy population. To better understand the actual use and utility of these medications, we sought to characterize the association between non-narcotic medications and milligram morphine equivalent (MME) narcotic score during the postoperative inpatient stay. MethodsWe reviewed 260 consecutive ERAS cystectomy patients. The MME impact of non-narcotic compliance and cumulative dose of medication received was evaluated separately with general linear models. We also assessed relationship of non-narcotic compliance to patient reported pain score, length of stay (LOS), and time to return of bowel function (ROBF) and performed manual review of postoperative documentation to identify reasons for medication noncompliance. ResultsCompliance with postoperative acetaminophen, gabapentin, and ketorolac was low. There was an inverse relationship between ketorolac dose and MME on postoperative day 1 (−0.026 MME/mg; P = 0.004) and postoperative day 2 (−0.33 MME/mg; P < 0.001). Compliance with ketorolac was associated with lower MME on postoperative day 1 (26.1 MME v. 33.6 MME; P = 0.023). There were no such associations identified with gabapentin or acetaminophen. Gabapentin compliance was associated with earlier ROBF (3.7 days v. 4.3 days; P = 0.006). Ketorolac compliance was associated with lower pain score on POD1 (3.25 VAS v. 4.07 VAS; P = 0.019) and POD2 (3.05 VAS v. 3.85 VAS; P = 0.040) There was no association between medication compliance and LOS. The most common reasons identified for non-compliance with gabapentin and ketorolac were renal function concerns (38% and 40% respectively), bleeding concerns with ketorolac (20%) and concerns for neurologic adverse effect with gabapentin (16%). ConclusionCompliance with non-narcotic medications in our ERAS cystectomy protocol was poor. There was a modest association with ketorolac and postoperative MME but no association with gabapentin or acetaminophen. Further study will clarify the role of these medications for cystectomy patients. Component specific analysis of protocolized care is valuable and may alter care pathways.

Single-Center In-Hospital and Outpatient Opioid Use for Lower Extremity Arterial Disease.

The pain associated with lower extremity arterial disease is difficult to treat, even with lower extremity revascularization. We sought to evaluate in-hospital and post-operative opioid usage in patients with different disease severities and treatments for lower extremity vascular disease. A retrospective review was performed for all hospital encounters for patients with an International Classification of Diseases (ICD) code consistent with lower extremity arterial disease admitted to a single center between January 2018 and March 2023. Cases included patients admitted to the hospital with a primary diagnosis of lower extremity arterial disease. These patients were subdivided based on disease severity, treatment type, and comorbid diagnosis of diabetes mellitus. The analysis focused on in-hospital opioid use frequency and dosage among these patients. The control group (CON) included encounters for patients admitted with a secondary diagnosis of lower extremity atherosclerotic disease. A total of 438 patients represented by all the analyzed encounters were then reviewed for the number and type of vascular procedures performed as well as opioid use in the outpatient setting for one year. Critical limb ischemia (CLI) encounters were more likely to use opioids as compared to the CON and peripheral arterial disease (PAD) without rest pain, ulcer or gangrene groups (CLI 67.9% (95% CI: 63.6%-71.6%) versus CON 52.1% (95% CI: 48.5%-55.7%), p < 0.001 and CLI 67.9% (95% CI: 63.6%-71.6%) versus PAD 50.2% (95% CI: 42.6%-57.4%), p < 0.001). Opioid use was also more common in encounters for gangrene and groups treated with revascularization (REVASC) and amputation (AMP) as compared to CON (gangrene 74.5% (95% CI: 68.5%-82.1%) versus CON 52.1% (95% CI: 48.5%-55.7%), p < 0.01; REVASC 58.3% (95% CI: 57.3%-66.4%) versus CON 52.1% (95% CI: 48.5%-55.7%), p =0.01; and AMP 72.3% (95% CI: 62.1%-74.0%) versus CON 52.1% (95% CI: 48.5%-55.7%), p < 0.01). Significantly increased oral opioid doses per day (MME/day) were not noted for any of the investigated groups as compared to the CON. In the outpatient setting, 186 (42.5% (95% CI: 37.2%-46.4%)) patients were using opioids one month after the most recent vascular intervention. By one year, 31 (7.1% (95% CI: 1.30%-7.70%)) patients were still using opioids. No differences in opioid usage were noted for patients undergoing single versus multiple vascular interventions at one year. Patients undergoing certain vascular surgery procedures were more likely to be using opioids at one year. Patients with CLI and gangrene as well as those undergoing vascular treatment have a greater frequency of opioid use during hospital encounters as compared to those patients with less severe disease and undergoing conservative management, respectively. However, these findings do not equate to higher doses of opioids used during hospitalization. Patients undergoing multiple vascular procedures are not more likely to be using opioids long-term (at one year) as compared to those patients treated with single vascular procedures.

Developing and Implementing a Patient-Centered Opioid Prescribing Algorithm among Gynecological Oncology Patients.

Background: The opioid epidemic is a public health crisis. However, opioid prescription recommendations have not been established in gynecological oncology, and guidelines that incorporate patient-reported pain are lacking. Objectives: The article aims to evaluate prescribing patterns, utilization, and patient-reported pain control in gynecological oncology patients at a large tertiary academic center. Methods: This was a two-phase, prospective cohort study. For Phase 1, patients undergoing hysterectomy through the gynecological oncology division at the University of New Mexico were enrolled. Postoperative opioid use was collected and standardized to oral morphine milligram equivalents (MMEs). The factors associated with outpatient opioid use were used to develop an opioid prescription algorithm. In Phase 2, we evaluated the implementation of the prescription algorithm. For both phases, patients completed a demographic survey, satisfaction survey, and validated pain questionnaires. Results: In Phase 1, the amount of opioids used was significantly lower than the amount of opioids prescribed. Factors that correlated with postoperative opioid use included surgical procedures and last 24-hour inpatient MME use. A standardized opioid prescription algorithm was developed by incorporating these factors. In Phase 2, the opioid prescribing algorithm there was no significant difference in pain scores between the two phases. Conclusions: Opioids were substantially overprescribed in gynecological oncology patients undergoing hysterectomy. Our study found that the surgical route and last 24-hour MME inpatient usage were reliable predictors of outpatient opioid use. We developed and implemented a standardized opioid prescription algorithm that was validated by comparing the pain control measures in the two phases.

Versatility of Single Port Retroperitoneal Low Anterior Access: Early Outcomes in Multiple Procedures.

Purpose: This study aimed to assess early outcomes of the single port (SP) robotic low anterior access (LAA) for all upper urinary tract surgeries. In addition, it aimed to explore the impact of clinical factors, notably Body Mass Index (BMI), on post-operative outcomes and length of hospital stay. Materials and Methods: Overall, 76 consecutive patients underwent SP robotic surgery with LAA involving all upper urinary tract pathologies, with data collected prospectively. Baseline characteristics, intra- and post-operative outcomes, pain levels, and opioid use were analyzed. Statistical methods, including logistic regression and locally weighted scatterplot smoothing analysis, were used to assess same-day discharge (SDD) predictors and the association between BMI and SDD probability. According to the Institutional Review Board (IRB) protocol, only data recorded in our electronic medical record system was included. Results: Ten different procedures were performed with LAA, with no need for conversion to open surgery and complication rates in line with the literature (30 days: 5%, 90 days: 6.6%). Notably, 77.6% of patients were discharged on the same day. A significant association was found between BMI and prolonged hospital stay, particularly in obese patients (BMI ≥30 kg/m2). Post-operative pain was generally low (median VAS: 4), with over 70% discharged without opioid prescriptions. Conclusions: The novel LAA is a versatile approach for various upper urinary tract surgeries, including in obese patients. While achieving satisfactory post-operative outcomes, increased BMI correlated with a reduced likelihood of SDD. Further studies, including larger cohorts and multicenter collaborations, are warranted to explore anesthesiologic management and validate these findings.

Effectiveness of implementing a standardized perioperative pain management protocol in children undergoing tonsillectomy: A quality improvement project.

Tonsillectomy procedures are commonly performed worldwide. At our academic tertiary care facility, we perform approximately 1000 tonsillectomy procedures annually. We have found inconsistent pain management strategies in pediatric tonsillectomy patients have contributed to variability in postoperative complications and the number and types of postoperative pain medications required in the Post Anesthesia Care Unit (PACU). This project aimed to assess the impact of implementing a standardized perioperative pain management protocol on reducing postoperative complications in pediatric patients who underwent a tonsillectomy procedure. A pre-post-intervention design was utilized, comparing characteristics and outcomes of pediatric patients for whom a standardized perioperative pain management protocol was implemented over a 12-week period compared to those who did not. The standardized perioperative pain management protocol was utilized intraoperatively by the anesthesiologists, nurse anesthetists, and residents. A Qualtrics survey was used by the Post Anesthesia Care Unit (PACU) nurses to gather data as they cared for patients who underwent tonsillectomy. Four outcomes were measured: (1) postoperative pain medication administration, (2) rate of postoperative respiratory complications, (3) rate of adherence, and (4) usability of a standardized pain management protocol. Data were compared between pre and post-implementation groups. During the quality improvement project, 180 children underwent tonsillectomy, with 81 in the control group and 99 in the intervention group. The median age did not differ between groups. The control group had higher postoperative opioid medication usage (93.8% vs. 54.5%) and a higher number of opioids administered in the recovery room. Postoperative IV fentanyl was reduced in the intervention group (49.4% vs. 28.3% in the intervention, p = .004). Respiratory interventions were more frequent in the control group (24.7% vs. 7.1%), with increased respiratory team activation. Respiratory team activation in the Post Anesthesia Care Unit (PACU) includes a 511 page for anesthesia provider assistance. Respiratory interventions included bag-mask ventilation, lidocaine, propofol or succinylcholine administration, and reintubation. The intervention group had 100% adherence to the pain management protocol, and providers found it easy to use. The quality improvement project highlighted notable improvements in the intervention group for whom a standardized perioperative pain management protocol was used, including reduced opioid medication administration, lower incidence of respiratory interventions, and high adherence to the pain management protocol. These findings underscore the effectiveness and feasibility of standardized protocols in enhancing patient outcomes.

Machine learning prediction model for postoperative ileus following colorectal surgery.

Postoperative ileus (POI) continues to be a major cause of morbidity following colorectal surgery. Despite best efforts, the incidence of POI in colorectal surgery remains high (~30%). This study aimed to investigate machine learning techniques to identify risk factors for POI in colorectal surgery patients, to help guide further preventative strategies. A TRIPOD-guideline-compliant retrospective study was conducted for major colorectal surgery patients at a single tertial care centre (2018-2022). The primary outcome was the occurrence of POI, defined as not achieving GI-2 (outcome measure of time to first stool and tolerance of oral diet) by day four. Multivariate logistic regression, decision trees, radial basis function and multilayer perceptron (MLP) models were trained using a random allocation of patients to training/testing data sets (80/20). The area under the receiver operating characteristic (AUROC) curves were used to evaluate model performance. Of 504 colorectal surgery patients, 183 (36%) experienced POI. Multivariate logistic regression, decision trees, radial basis function and MLP models returned an AUROC of 0.722, 0.706, 0.712 and 0.800, respectively. The MLP model had the highest sensitivity and specificity values. In addition to well-known risk factors for POI, such as postoperative hypokalaemia, surgical approach, and opioid use, the MLP model identified sarcopenia (ranked 4/30) as a potentially modifiable risk factor for POI. MLP outperformed other models in predicting POI. Machine learning can provide valuable insights into the importance and ranking of specific predictive variables for POI. Further research into the predictive value of preoperative sarcopenia for POI is required.

Predicting Postoperative Pain and Opioid Use with Machine Learning Applied to Longitudinal Electronic Health Record and Wearable Data.

Managing acute postoperative pain and minimizing chronic opioid use are crucial for patient recovery and long-term well-being. This study explored using preoperative electronic health record (EHR) and wearable device data for machine-learning models that predict postoperative acute pain and chronic opioid use. The study cohort consisted of approximately 347 All of Us Research Program participants who underwent one of eight surgical procedures and shared EHR and wearable device data. We developed four machine learning models and used the Shapley additive explanations (SHAP) technique to identify the most relevant predictors of acute pain and chronic opioid use. The stacking ensemble model achieved the highest accuracy in predicting acute pain (0.68) and chronic opioid use (0.89). The area under the curve score for severe pain versus other pain was highest (0.88) when predicting acute postoperative pain. Values of logistic regression, random forest, extreme gradient boosting, and stacking ensemble ranged from 0.74 to 0.90 when predicting postoperative chronic opioid use. Variables from wearable devices played a prominent role in predicting both outcomes. SHAP detection of individual risk factors for severe pain can help health care providers tailor pain management plans. Accurate prediction of postoperative chronic opioid use before surgery can help mitigate the risk for the outcomes we studied. Prediction can also reduce the chances of opioid overuse and dependence. Such mitigation can promote safer and more effective pain control for patients during their recovery.

Intraoperative Methadone Use Is Associated With Reduced Postoperative Pain and More Rapid Opioid Weaning After Coronary Artery Bypass Grafting

ObjectivesTo explore the association between intraoperative methadone use, postoperative pain, and opioid consumption after coronary artery bypass grafting (CABG) surgery. DesignRetrospective cohort study. SettingSingle academic medical center. ParticipantsPatients having isolated CABG over a five-year period. InterventionsNone Measurements and Main ResultsDemographics, comorbidities, and intraoperative anesthetic medications were recorded. Primary study outcomes were average and maximum pain scores and morphine milligram equivalent (MME) consumption after surgery for the first two postoperative days (PODs). Linear mixed effects regression models were used to examine the effect of intraoperative methadone use on study outcomes. Among 1,338 patients, 78.6% received intraoperative methadone (0.2 mg/kg). Patients who did not receive methadone had higher average (Est = 0.48, 95% CI= 0.22, 0.73, p<.001) and maximum postoperative (Est = 0.49, 95% CI=0.23, 0.75, p<.001) pain scores over POD 0 to 2. For postoperative opioid consumption, there was a significant intraoperative methadone use x time interaction effect on postoperative opioid use (OR = 2.21, 95% CI = 1.74, 2.80, p<.001). Across PODs 0 to 2, patients who received intraoperative methadone had a faster decline in postoperative opioid use compared to those who did not receive intraoperative methadone. Patients who did not receive intraoperative methadone were extubated slightly faster (OR = 0.82, 95% CI = 0.72, 0.93, p<.01). ConclusionsOur data suggest that the use of intraoperative methadone is safe, reduces postoperative pain, and expedites weaning from postoperative opioids after CABG surgery.

Postoperative Opioid Usage and Disposal Strategies After Arthroscopic Procedures in a Young Cohort: A Prospective Observational Study.

Although several studies have noted that patients are routinely overprescribed opioids, few have reported usage after arthroscopic surgery. To determine opioid consumption and allocation for unused opioids after common arthroscopic surgeries. Case series; Level of evidence, 4. Patients between the ages of 15 and 40 years who were scheduled to undergo anterior cruciate ligament reconstruction (ACLR), labral repair of the hip or shoulder, meniscectomy, or meniscal repair were prospectively enrolled. Patients were prescribed either 5 mg hydrocodone-325 mg acetaminophen or 5 mg oxycodone-325 mg acetaminophen based on surgeon preference. Patients completed a daily opioid usage survey during the 2-week postoperative period. In addition, patients completed a survey on postoperative day 21 inquiring about continued opioid use and medication disposal, if applicable. Opioid medication consumption was converted to morphine milligram equivalents (MMEs). Of the 200 patients who were enrolled in the study, 176 patients had sufficient follow-up after undergoing 85 (48%) ACLR, 26 (14.8%) hip labral repair, 34 (19.3%) shoulder labral repair, 18 (10.2%) meniscectomy, and 13 (7.4%) meniscal repair procedures. Mean age was 26.1 years (SD, 7.38); surgeons prescribed a mean of 26.6 pills whereas patients reported consuming a mean of 15.5 pills. The mean MME consumption in the 14 days after each procedure was calculated: ACLR (95.7; 44% of prescription), hip labral repair (84.8; 37%), shoulder labral repair (57.2; 35%), meniscectomy (18.4; 27%), and meniscal repair (32.1; 42%). This corresponded to approximately 39% of the total opioid prescription being utilized across all procedures. Mean MME consumption was greatest on postoperative day 1 in hip, shoulder, and meniscal procedures and on postoperative day 2 in ACLR. Only 7.04% of patients reported continued opioid use in the third postoperative week. Patients had a mean of 11 unused pills or 77.7 MMEs remaining. Of the patients with remaining medication, 24.7% intended to keep their medication for future use. The results of our study indicate that patients who undergo the aforementioned arthroscopic procedures consume <75 MMEs in the 2-week postoperative period, translating into a mean of 10 to 15 pills consumed. Approximately 60% of total opioids prescribed went unused, and one-fourth of patients intended to keep their remaining medication for future usage. We have provided general prescribing guidelines and recommend that surgeons carefully consider customizing their opioid prescriptions on the basis of procedure site to balance optimal postoperative analgesia with avoidance of dissemination of excess opioids.

Lateness of Acetaminophen and Non-steroidal Anti-inflammatory Drug Administrations in a Retrospective Cohort of Medication Administration Records Among Patients After Cesarean Delivery.

In an earlier study of patients after cesarean delivery, the concurrent versus alternating administration of acetaminophen and non-steroidal anti-inflammatory drugs was associated with a substantial reduction in total postoperative opioid use. This likely pharmacodynamic effect may differ if the times when nurses administer acetaminophen and non-steroidal anti-inflammatory drugs often differ substantively from when they are due. Weexamined the "lateness" of analgesic dose administration times, the positive difference ifadministered late, and the negative value ifearly. The retrospective cohort study used all 67,900 medication administration records for scheduled (i.e., not "as needed") acetaminophen, ibuprofen, and ketorolac among all 3,163 cesarean delivery cases at the University of Iowa between January 2021 and December 2023. Barcode scanning at the patient's bedside was used right before each medication administration. There were 95% of doses administered over a 4.8-hour window, from 108 minutes early (97.5% one-sided upper confidence limit 105 minutes early) to 181 minutes late (97.5% one-sided lower limit 179 minutes late). Fewer than half of doses (46%, P <0.0001) were administered ±30minutes of the due time. The intraclass correlation coefficient was approximately 0.11, showing that there were small systematic differences among patients. There likewise were small to no systematic differences in lateness based on concurrent administrations ofacetaminophen and ibuprofen or ketorolac, time of the day that medications were due, weekday, year, or number of medications to be administered among all such patients within 15 minutes. Other hospitals should check the lateness of medication administration when that would change their ability to perform or apply the results of analgesic clinical trials (e.g., simultaneous versus alternating administration).

Postoperative pain scores and opioid use after standard bupivacaine vs. liposomal bupivacaine regional blocks for abdominal cancer surgery: A propensity score matched study

BackgroundFascial plane blocks (FPBs) are widely used for abdominal surgery with the assumption that liposomal bupivacaine (LB) is more effective than standard bupivacaine (SB). MethodsThis was a single-institution retrospective cohort study of patients administered FPBs with LB or SB ​+ ​admixtures (dexamethasone/dexmedetomidine) for open abdominal cancer surgery. Propensity score matching generated a 2:1 (LB:SB) matched cohort. Opioid use (mg oral morphine equivalents, OME) and severe pain (≥3 pain scores ≥7 in a 24-h period) were compared. ResultsOpioid use was >150 ​mg OME in 19.9 ​% (29/146) LB and 16.4 ​% (12/73) SB patients (p ​= ​0.586). Severe pain was experienced by 44 ​% (64/146) LB and 53 ​% (39/73) SB patients (p ​= ​0.198). On multivariable analysis, SB vs LB choice was not associated with high opioid volume >150 ​mg or severe pain. ConclusionsFPBs with standard bupivacaine were not associated with higher 72-h opioid use or more severe pain compared to liposomal bupivacaine.

The Effect of Music on Postoperative Agitation, Pain, and Opioid Use among Patients Undergoing Total Knee Replacement

BackgroundPostoperative pain and agitation is an ongoing issue among patients undergoing total knee replacement (TKR). Use of complementary therapies such as music may improve outcomes when combined with medical therapy. AimThe purpose of this quality improvement (QI) initiative was to evaluate postoperative use of classical music among adult patients who have undergone TKR on reported agitation, pain, and opioid use. DesignA prospective evidence-based QI initiative. SettingA midwestern hospital post-anesthesia care unit. ParticipantsPostoperative patients who had undergone TKR. MethodsClassical piano music was played postoperatively using an MP3 device. Adult patients who were undergoing TKR were consecutively offered music during their recovery period in the PACU. Agitation was measured using the Richmond Agitation Sedation Score (RASS). Patient perceived pain was measured on a scale of 0-10 with 0 being no pain and 10 being extreme pain. Opioid use was measured using the morphine milligram equivalents (MME). FindingsA total of (n=40) patients received music and (n=50) patients received standard care without music. RASS was significantly lower in the music group than in the baseline non-music group X2 (1, N = 89) = 17.8, p < .001. Patient reported pain scores were significantly lower in the music group, 3.98(SD = 2.71), compared to the baseline non-music group, 6.27(SD = 2.60). Opioid use was also significantly decreased in the music group to MME 9.51(SD = 8.62) compared to the baseline non-music group 13.38 (SD = 9.71). ConclusionMusic is an effective nonpharmacologic intervention in decreasing agitation, pain, and opioid use among patients undergoing TKR. These findings provide evidence for nurses to incorporate music as an adjunctive approach to enhance the patient's experience and improve outcomes.

D142. The Impact of Tumescent Local Anesthesia on Postoperative Pain and Opioid use in DIEP Flap Breast Reconstruction

D142. The Impact of Tumescent Local Anesthesia on Postoperative Pain and Opioid use in DIEP Flap Breast Reconstruction

Single-dose Intraoperative Methadone for Pain Management in Pediatric Tonsillectomy: A Randomized Double-blind Clinical Trial.

More than 500,000 elective tonsillectomies are performed in U.S. children annually. Pain after pediatric tonsillectomy is common, often severe, and undertreated. There is no consensus on the optimal management of perioperative tonsillectomy pain. Methadone, with an elimination half-life of 1 to 2 days, has a longer duration of effect than short-duration opioids such as fentanyl. The primary objective of this study was to investigate the intraoperative use of methadone for pediatric tonsillectomy. It tested the hypothesis that methadone would result in less postoperative opioid use compared with short-duration opioids in children after tonsillectomy. This double-blind, randomized, parallel group trial in children (3 to 17 yr) undergoing tonsillectomy compared single-dose intravenous methadone (0.1 mg/kg then 0.15 mg/kg age-ideal body weight, in a dose escalation paradigm) versus as-needed short-duration opioid (fentanyl) controls. Opioid use, pain, and side effects were assessed in-hospital and 7 days postoperatively via electronic surveys. The primary outcome was total 7-day opioid use in oral morphine equivalents per kilogram (kg). Secondary outcomes were opioid use in the postanesthesia care unit, daily pain scores, and total number of 7-day opioid doses used. Data analysis included 60 children (20/group), age 5.9 ± 3.7 yr (mean ± SD; median, 4; range, 3 to 17). Total 7-day opioid use (oral morphine equivalents per kg median [interquartile range]) was 1.5 [1.2, 2.1] in controls, 0.9 [0.1, 1.4] after methadone 0.1 mg/kg (P = 0.045), and 0.5 [0, 1.4] after methadone 0.15 mg/kg (P = 0.023). Postanesthesia care unit opioid use (oral morphine equivalents per kg) in controls was 0.15 [0.1, 0.3], 0.04 [0, 0.1] after methadone 0.1 mg/kg (P = 0.061). and 0.0 [0, 0.1] after methadone 0.15 mg/kg (P = 0.021). Postoperative pain scores were not different between groups. No serious opioid-related adverse events occurred. This small initial study in children undergoing tonsillectomy found that single-dose intraoperative methadone at 0.15 mg/kg age ideal body weight was opioid-sparing compared with intermittent fentanyl.

The use of ketorolac may reduce opioid exposure in infants less than 6 months of age undergoing congenital heart surgery.

Pain management for infants undergoing cardiothoracic surgery primarily utilises opioid analgesics. There is a paucity of data available for the use of non-steroidal anti-inflammatory medications such as ketorolac in this patient population. This retrospective study evaluated patients between 30 days and 6 months undergoing cardiothoracic surgery. The primary endpoint evaluates ketorolac on reducing post-operative opioid use. Of 243 evaluated patient, 145 met inclusion. Baseline demographics were similar amongst the cohorts. Patients administered ketorolac used less cumulative opiates, in morphine milligram equivalents, for post-op days (POD) 1-3 after surgery compared to patients not receiving ketorolac (9.47 versus 12.68; p = 0.002). The no-ketorolac group required more opiates on POD 1 (10.9 versus 5; p < 0.001) and POD 2 (4.2 versus 2.5; p = 0.006) with no difference found on POD 3 (2 versus 1.6; p = 0.2). There was a mean increase from baseline to highest serum creatinine level on POD 1-3 in the no-ketorolac group compared to the ketorolac group (0.15 versus 0.09 mg/dL; p < 0.014), with no difference in stage 1 or stage 2 acute kidney injury. There were no differences in average chest tube output in mL/kg/day (0.24 versus 0.32; p = 0.569) or need for transfusion (36% versus 24%; p = 0.125), respectively. Scheduled administration of ketorolac after cardiothoracic surgery resulted in a significant reduction in opioid exposure, with no difference in rates of acute kidney injury or bleeding.