The value of "multimodal" or "balanced analgesia" in postoperative pain treatment

Bibliometric analysis of multimodal analgesia research in the perioperative period: trends, contributions, and emerging areas (2013-2023)

Objectives

Multimodal analgesia (MA) is a cornerstone in perioperative pain management, enhancing pain relief and minimizing opioid consumption by targeting various pain pathways. This study conducts a bibliometric analysis of MA research from 2013 to 2023 to understand its development and impact on perioperative care.

Methods

A comprehensive literature search of the Web of Science Core Collection (WOSCC) was conducted, covering publications from January 2013 to December 2023. Data were analyzed using VOSviewer and other bibliometric tools to identify publication trends, key contributors, and emerging research themes.

Results

The analysis identified 1,939 studies on MA, with a notable increase in annual publications since 2020. The USA, China, and Canada were the leading contributors. Key terms like Non-Steroidal Anti-Inflammatory Drugs (NSAIDs), Enhanced Recovery After Surgery (ERAS), and Patient-Controlled Analgesia (PCA) were frequently associated with MA. Significant journals included the Cureus Journal of Medical Science and Anesthesia and Analgesia. Influential authors such as Richard D. Urman and Henrik Kehlet were highlighted for their contributions. The research showed significant advancements and growing global interest in MA.

Conclusion

The study underscores the growing importance of MA in perioperative pain management, with significant contributions from leading countries and researchers. Future research should focus on optimizing pain management protocols, enhancing patient recovery, and reducing opioid dependency through MA.

Global research frontiers and thematic trends in opioid-free anesthesia over the past 20 years: a bibliometric analysis

Objective

Opioids have constituted an essential element of general anesthesia for a considerable length of time. However, with the increase in opioid misuse and associated postoperative adverse effects, studies related to opioid-free anesthesia (OFA) have emerged, which pose a challenge in identifying key research directions. Accordingly, the objective of this study was to provide a review of the relevant literature in the field of OFA over the past 2 decades, with the goal of identifying the prevailing trends and research Frontiers.

Methods

A systematic review of the publications on OFA was conducted using the Web of Science Core Collection database, with the objective of identifying relevant publications between the years 2005 and 2024. The bibliometric analysis was conducted using CiteSpace (version 6.1. R6), VOSviewer (version 1.6.19), and R (version4.4.2).

Results

In conclusion, 477 publications were included in this study. The number of annual publications in this field has exhibited a steady increase over the past 2 decades. The United States and its institutions were found to be the most central. Forget, Patrice, and BELOEIL H were identified as the most prolific and highly cited authors, respectively. The journal with the highest number of publications was BMC Anesthesiology. The most frequently cited journal was Anesthesia and Analgesia, followed by Anesthesiology. In addition, keyword burst, keywords co-occurrence, and analysis of cited references indicate that recent studies have focused on: opioid consumption, pain, and postoperative nausea and vomiting (PONV). Meanwhile, analysis of keyword clusters and keywords timeline view showed that the main research frontiers are sevoflurane anesthesia, plane block, multimodal anesthesia, opioid-sparing anesthesia.

Conclusion

Our results show that the current trends and directions of research focus on opioid consumption, pain, and PONV. Frontiers for future research are expected to include research areas related to sevoflurane anesthesia, plane block, multimodal anesthesia, opioid-sparing anesthesia.

Enhanced Recovery after Surgery - Evidence and Practice

AbstractEnhanced Recovery After Surgery (ERAS) is a global initiative comprised of a series of evidence-based interventions in the preoperative, intraoperative, and postoperative surgical phases. When implemented as a bundle, ERAS interventions both improve clinical outcomes and provide cost savings to the health care system. This review provides an update on the current evidence for individual ERAS elements to improve quality of care as well as practical recommendations for multidisciplinary teams to implement their own ERAS programs.

Additive effect of a single intravenous dose of acetaminophen administered at the end of laparoscopic hysterectomy on postoperative pain control with nefopam and fentanyl-based patient-controlled analgesia: a double-blind, randomized controlled trial

BACKGROUND

Acetaminophen is a widely used analgesic for postoperative pain management. However, data on its combined use with nefopam for managing postoperative pain following laparoscopic hysterectomy are limited. This study evaluated the effects of a single intravenous dose of acetaminophen combined with fentanyl- and nefopam-based patient-controlled analgesia (PCA) in patients undergoing laparoscopic hysterectomy.

METHODS

In this prospective, double-blind, randomized controlled trial, 84 patients were randomized to receive either 1 g of intravenous acetaminophen (treatment group, n = 42) or normal saline (control group, n = 42) at the end of surgery. All patients received fentanyl and nefopam via PCA, postoperatively. PCA consumption, pain scores at rest, and postoperative nausea and vomiting (PONV) scores were assessed at 1, 6, and 24 h postoperatively. Patient satisfaction and opioid-related side effects were also evaluated. The primary outcome was the total PCA consumption within the first 24 h.

RESULTS

No significant difference in 24-h PCA consumption was observed between the control and treatment groups (27.9 ± 16.6 vs. 26.4 ± 11.2, P = 0.623). The pain scores at rest measured at 1, 6, and 24 h after surgery were also not significantly different between the two groups. There were no differences in the satisfaction scores, PONV scores, rescue analgesic use, adverse effects, or length of hospital stay between the groups.

CONCLUSIONS

A single intraoperative dose of intravenous acetaminophen, combined with nefopam- and fentanyl-based PCA, did not significantly reduce analgesic requirements, pain scores at rest, or opioid-related side effects compared with placebo in laparoscopic hysterectomy patients.

TRIAL REGISTRATION

ClinicalTrials.gov (Identifier: NCT03644147 | August 21, 2018).

Thalassemias and Sickle Cell Diseases in Pregnancy: SITE Good Practice

Background: Hereditary hemoglobin disorders are the most common globally distributed monogenic red cell diseases. The rights of women with thalassemia or sickle cell disease (SCD) to motherhood need to be protected by creating a roadmap to guide her, and her family network, along all the phases of the event. In fact, pregnancy in these vulnerable patients requires special attention and guidelines from the counseling stage (giving information about the special requirement and risks posed by their pregnancy with respect to the general population) the pre-conception stage, the early and mid-late pregnancy stage, to labor and lactation. The biocomplexity of these diseases requires a multidisciplinary team synergizing with gynecologists and obstetricians. In addition, the presence of a multicultural scenario requires healthcare workers to overcome stereotypes and adopt appropriate anthropological tools that might help them integrate the different cultural models of disease and motherhood. Methods: The Management Committee of the Society for Thalassemia and Hemoglobinopathies (SITE) selected and brought together a multidisciplinary and multiprofessional group made up of experts in hemoglobinopathies and experts in anthropology, flanked along with by experts with methodological and organizational expertise in order to create recommendations based on the integration of available scientific evidence together with expert opinion. Results: The panelists critically analyzed the literature, combining in a single document practices developed over several years of managing young women with hemoglobinopathies in a sensitive phase of their lives. Conclusions: This good practice document is the result of a collegial effort by Italian experts on hemoglobinopathies who are members of SITE. (SITE).

Narrative review: Managing buprenorphine and opioid use disorder in the perioperative setting

The opioid epidemic continues to have a staggering impact on millions of individuals and families across all socioeconomic levels and communities. Recent studies suggest high numbers of patients presenting for surgery with reported opioid misuse and/or opioid use disorder (OUD). Anesthesiologists often lack basic education to treat patients suffering with OUD or patients in recovery from this treatable disease. This manuscript will provide a review of the American Society of Anesthesiology and Pain Medicine Multisociety Working Group Practice Advisory recommendations on existing OUD treatment barriers and perioperative management best practices; it will also demonstrate the benefits that greater involvement of the anesthesiologist can have in managing patients with OUD perioperatively.

Knowledge, attitudes, and practices of transcutaneous electrical nerve stimulation in perioperative care: A Swedish web-based survey

OBJECTIVES

Transcutaneous electrical nerve stimulation (TENS) is a noninvasive adjunct to multimodal pain management for acute postoperative care across various surgeries. Despite extensive evidence supporting its efficacy, TENS remains underutilized in clinical practice. This study aimed to assess the knowledge, attitudes, and practices of healthcare professionals regarding TENS in perioperative settings to support its integration into routine clinical practice.

METHODS

A web-based questionnaire was distributed to anesthesiology department heads at all university hospitals (n = 7) in Sweden and three smaller, randomly selected hospitals across three geographical areas. Department heads forwarded the questionnaire to anesthesiologists, nurse anesthetists, critical care nurses, and registered nurses with basic education working in perioperative settings. The questionnaire included four sections: demographic information, general postoperative phase information, TENS use for postoperative pain relief, and open-ended questions.

RESULTS

The survey was sent to 870 respondents, yielding a response rate of 28% (n = 246). Among respondents, 69% reported lacking adequate knowledge to administer TENS, and 79% indicated they did not use TENS in their practice. Furthermore, 45% noted an absence of clinical guidelines supporting the use of TENS in their clinic, while 32% were unsure about the existence of guidelines. However, 60% expressed interest in developing theoretical knowledge and practical skills for TENS application.

CONCLUSIONS

This study highlights that substantial knowledge gaps and the lack of clear clinical guidelines limit the use of TENS for acute postoperative pain management. These deficiencies may lead to inadequate pain control, increased opioid use, and opioid-related adverse effects. We recommend that hospital leadership and professional bodies develop and implement comprehensive educational programs and establish clear, evidence-based clinical guidelines for TENS use in postoperative pain management. Addressing these gaps is essential for improving clinical practice and empowering patients through greater involvement and autonomy in pain management strategies.

Advances in perioperative pain management for total knee arthroplasty: a review of multimodal analgesic approaches

Despite significant advancements in total knee arthroplasty (TKA), managing postoperative pain remains a substantial clinical challenge. With advances in surgical techniques and pharmacology, TKA perioperative analgesic strategies continue to evolve, necessitating ongoing reassessment of current data. Multimodal analgesia has become the standard for perioperative pain management in TKA; however, variations in its specific components and applications across studies create challenges in selecting the optimal analgesic approach. Evaluating these pain management strategies is essential for understanding their benefits, limitations, and appropriate use, allowing the development of individualized perioperative analgesic plans. This review aims to summarize current research on perioperative pain control in TKA and assess the effectiveness of different analgesic interventions.

Comparison of the efficacy and safety of MAKO robot-assisted total knee arthroplasty versus conventional manual total knee arthroplasty in uncomplicated unilateral total knee arthroplasty a single-centre retrospective analysis

PURPOSE

To compare the efficacy and safety of MAKO robot-assisted total knee arthroplasty (MA-TKA) with conventional manual total knee arthroplasty (CM-TKA) in patients with end-stage knee osteoarthritis (KOA) during the early postoperative period.

METHOD

A retrospective analysis was conducted on 22 patients with KOA who underwent MA-TKA and 26 patients who underwent CM-TKA from April 2023 to July 2023. Hip-knee-ankle angle (HKA), lateral distal femoral angle (LDFA), medial proximal tibial angle (MPTA), American Knee Society Score (AKSS), Forgotten Joint Score-12 (FJS-12), visual analogue scale (VAS), and postoperative complications were recorded and compared between the two groups.

RESULT

Both groups successfully completed the surgeries. In terms of radiographic parameters, postoperative one month LDFA and HKA in the MA-TKA group were significantly lower than those in the CM-TKA group (P < 0.05). At the one month follow-up, 19 patients (86.4%) in the MA-TKA group had an HKA less than 3°, compared to 20 patients (76.9%) in the CM-TKA group. Clinically, VAS scores at 24 h, 48 h, and 72 h postoperatively were lower in the MA-TKA group both at rest and during activity. At one month and three months postoperatively, AKSS Function Scores and FJS-12 scores in the MA-TKA group were significantly higher than those in the CM-TKA group (P < 0.05). Regarding postoperative complications, no complications occurred in the MA-TKA group, while one patient in the CM-TKA group experienced postoperative knee stiffness, which resolved after physical therapy, with no statistically significant difference (P > 0.05).

CONCLUSION

Compared with conventional manual total knee arthroplasty, MAKO robot-assisted TKA demonstrates better short-term clinical efficacy, achieves better alignment planning, and maintains good safety.

Opioid-Free Anesthesia in a Young Female Undergoing Emergency Videolaparoscopic Appendectomy: A Case Report

Opioids are one of the main classes of drugs used in anesthesia, both for the intraoperative and postoperative period, for a multitude of surgical procedures. In recent years, anesthetic techniques have been developed that reduce or avoid the use of opioids and their side effects. One of these is opioid-free anesthesia, which does not involve the use of opioid drugs in the intraoperative period. In this case report, we used this anesthetic technique for an emergency videolaparoscopic appendectomy for a young woman in a state of sepsis with a history of previous surgery for the removal of a voluminous ovarian cyst.

Wide-Awake Hand Trauma Surgery: Designing Strategies to Optimise Patient Experience

INTRODUCTION

The regional hand trauma service in Greater Manchester, United Kingdom, underwent significant reorganisation early in the COVID-19 pandemic, with a shift from predominantly general anaesthesia (GA) procedures to the adoption of a Wide-Awake Local Anaesthetic No Tourniquet (WALANT) technique. We implemented strategies targeted towards optimising patient experience, largely applicable to most healthcare settings.

METHODS

Four domains were explored: (i) compliance in timing to nationally agreed treatment guidelines, (ii) the role of patient information leaflets, (iii) the introduction of a post-operative analgesia protocol, and (iv) broadly evaluating the environmental impact following the implementation of a same-day 'see and treat' service.

RESULTS

Following reorganisation to a predominantly WALANT service, we observed an increase in compliance with nationally agreed standards for the treatment of common hand injuries. Patient education and peri-operative counselling reduced anxiety, whereas post-operative pain was better managed with the introduction of an analgesic protocol. Using a travel carbon calculator, it can be inferred that there are significant reductions in carbon emissions generated when patients are evaluated and treated on the same day as their clinical presentation.

CONCLUSIONS

It is widely acknowledged that WALANT benefits patients and the healthcare system. We contemplated whether further incremental changes in clinical practice could further improve patient experience. Given our findings, we advocate a multi-modal approach with a greater focus on patient outcomes (trials are currently underway, e.g., WAFER) supplemented by universally accepted validated patient-reported outcome measures (PROMs).

The efficacy and safety of intra-articular injection of corticosteroids in multimodal analgesic cocktails in total knee arthroplasty-a historically controlled study

Background

Total knee arthroplasty (TKA) is a common and effective procedure. Optimizing pain control and reducing postoperative discomfort are essential for patient satisfaction. No studies have examined the safety and efficacy of intra-articular corticosteroid injections following TKA. This study aims to examine the safety and efficacy of corticosteroids in intra-articular multimodal analgesic injections.

Materials and methods

This was a historically controlled study conducted at a single academic institution. Before May 2019, patients received an intra-articular cocktail injection without corticosteroids during surgery, referred to as the non-corticosteroid (NC) group. After June 2019, intraoperatively, patients received an intra-articular cocktail injection containing corticosteroids, referred to as the corticosteroid (C) group. Finally, 738 patients were evaluated, 370 in the C cohort and 368 in the NC cohort. The mean follow-up duration was 30.4 months for the C group and 48.4 months for the NC group.

Results

The mean VAS scores at rest on postoperative day (POD) 1 (2.35) and POD3 (3.88) were significantly lower in the C group than those in the NC group, which were 2.86 (POD1) and 5.26 (POD3) (p < 0.05). Walking pain in the C group (4.42) was also significantly lower than that (5.96) in the NC group on POD3 (p < 0.05). Patients in the C group had a significantly higher mean range of motion (ROM) (92.55) on POD3 than that (86.38) in the NC group. The mean time to straight leg raise for group C (2.77) was significantly shorter than that (3.61) for the NC group (p < 0.05). The C group also had significantly fewer rescue morphine (1.9) and metoclopramide (0.21) uses per patient than the NC group, which were 3.1 and 0.24, respectively. No significant differences in fever or vomiting rates between groups were found. Patients in neither group developed periprosthetic joint infections or skin necrosis. One patient in the C group suffered from wound dehiscence, and the wound healed well after debridement. No patient died or had a re-operation in either group.

Conclusions

This pilot trial found that intra-articular injection of multimodal analgesia (including corticosteroids) reduced initial postoperative pain, increased ROM in the early postoperative days (up to POD3), and did not increase wound complications or infection rates in approximately 30 months of follow-up.

Combining various acupuncture therapies with multimodal analgesia to enhance postoperative pain management following total knee arthroplasty: a network meta-analysis of randomized controlled trials

OBJECTIVE

This study aims to evaluate the efficacy and safety of various acupuncture treatments in conjunction with multimodal analgesia (MA) for managing postoperative pain and improving knee function in patients undergoing total knee arthroplasty (TKA), based on the findings from clinical research indicating the potential benefits of acupuncture-related therapies in this context.

METHODS

We searched Web of Science, PubMed, SCI-hub, Embase, Cochrane Library, China Biology Medicine (CBM), China National Knowledge Infrastructure (CNKI), Wanfang Data, and Chinese Scientific Journal Database (VIP) to collect randomized controlled trials of acupuncture-related therapies for post-TKA pain. After independent screening and data extraction, the quality of the included literature was evaluated. The potential for bias in the studies incorporated in the analysis was assessed according to the guidelines outlined in the Cochrane Handbook 5.1. Network meta-analysis (NMA) was conducted using RevMan 5.4 and Stata 16.0 software, with primary outcome measures including visual analog scale (VAS), pain pressure threshold (PPT), hospital for special surgery knee score (HSS), and knee joint range of motion (ROM). Furthermore, the interventions were ranked based on the SUCRA value.

RESULTS

We conducted an analysis of 41 qualifying studies encompassing 3,003 patients, examining the efficacy of four acupuncture therapies (acupuncture ACU, electroacupuncture EA, transcutaneous electrical acupoint stimulation TEAS, and auricular acupoint therapy AAT) in conjunction with multimodal analgesia (MA) and MA alone. The VAS results showed no significant difference in efficacy among the five interventions for VAS-3 score. However, TEAS+MA (SMD: 0.67; 95%CI: 0.01, 1.32) was more effective than MA alone for VAS-7 score. There was no significant difference in PPT score among the three interventions. ACU + MA (SMD: 6.45; 95%CI: 3.30, 9.60), EA + MA (SMD: 4.89; 95%CI: 1.46, 8.32), and TEAS+MA (SMD: 5.31; 95%CI: 0.85, 9.78) were found to be more effective than MA alone for HSS score. For ROM score, ACU + MA was more efficacious than EA + MA, TEAS+MA, and AAT + MA, MA. Regarding the incidence of postoperative adverse reactions, nausea and vomiting were more prevalent after using only MA. Additionally, the incidence of postoperative dizziness and drowsiness following ACU + MA (OR = 4.98; 95%CI: 1.01, 24.42) was observed to be higher compared to that after AAT + MA intervention. Similarly, the occurrence of dizziness and drowsiness after MA was found to be significantly higher compared to the following interventions: TEAS+MA (OR = 0.36; 95%CI: 0.18, 0.70) and AAT + MA (OR = 0.20; 95%CI: 0.08, 0.50). The SUCRA ranking indicated that ACU + MA, EA + MA, TEAS+MA, and AAT + MA displayed superior SUCRA scores for each outcome index, respectively.

CONCLUSION

For the clinical treatment of post-TKA pain, acupuncture-related therapies can be selected as a complementary and alternative therapy. EA + MA and TEAS+MA demonstrate superior efficacy in alleviating postoperative pain among TKA patients. ACU + MA is the optimal choice for promoting postoperative knee joint function recovery in TKA patients. AAT + MA is recommended for preventing postoperative adverse reactions.

SYSTEMATIC REVIEW REGISTRATION

https://www.crd.york.ac.uk/, identifier (CRD42023492859).

Opioids and Youth Athletes

CONTEXT

The ongoing opioid epidemic and associated adverse effects impart a large burden on our current healthcare system. The annual economic and noneconomic cost of opioid use disorder and fatal opioid overdose is currently estimated at $1 trillion.

OBJECTIVE

This review presents the prevalence, frequency of use, need, and effectiveness of opioid analgesia in the youth and adolescent athlete population. It identifies current indications for opioid versus nonopioid analgesic use in the setting of acute orthopaedic injuries, postoperative management, concussion, and chronic pain. Current knowledge of youth athlete opioid use, risks related to use, misuse, diversion, and addiction are reviewed.

DATA SOURCES

A PubMed, Medline, and Cochrane Library search was conducted in February 2023 to review opioid pain management strategies in the pediatric athlete population from 2000 to present.

STUDY SELECTION

Searches were restricted to English language articles and human subjects. Initial reviews of titles and abstracts were performed by all authors and relevant full-text articles were selected. Priority was given to systematic and narrative reviews, meta-analyses, and prospective studies.

STUDY DESIGN

Narrative review.

LEVEL OF EVIDENCE

Level 3.

DATA EXTRACTION

First author name, publication year, study design, study country, subject demographics, and data on the frequency, type, and duration of analgesic treatments for musculoskeletal injuries, postsurgical care, chronic pain disorders, and concussion were extracted.

RESULTS

Pediatric athletes comprise a high-risk population seeking analgesic relief for injury-related pain. Participation in high school sports is associated with increased risk of opioid use. An average of 28% to 46% of high school athletes have used opioids in their lifetime. Participation in ≥1 high school sport puts adolescents at 30% greater odds of future opioid misuse.

CONCLUSION

The use of opioids in the pediatric athlete population is common and associated with both short- and long-term risks of misuse and addiction.

The Efficacy of Intercostal Nerve Block in the Management of Postoperative Pain After Costal Cartilage Harvest for Craniofacial Reconstruction Systematic Review and Meta-analysis

INTRODUCTION

Autologous costal cartilage harvest is a common procedure in craniofacial reconstruction due to its stability, dependability, and diversity. However, such a procedure is associated with severe donor-site pain postoperatively. Therefore, we aim through this study to compare the efficacy of intercostal nerve block in the management of postoperative pain in patients undergoing costal cartilage harvest for craniofacial reconstruction.

METHOD

This systematic review was reported according to the Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) guidelines. The study systematically reviewed MEDLINE, Cochrane, and EMBASE databases without time-limitation.

RESULTS

As a result of reviewing the literature, 33 articles were screened by full-text resulting in 14 articles which met our inclusion/exclusion criteria. However, only four high-quality RCT articles were included in the quantitative synthesis (meta-analysis). The findings of this study suggest that there is no significant difference in pain scores between ICNB and control groups at 12, 24, and 48 h postoperatively, both at rest and with coughing. Therefore, both techniques are considered safe and effective.

CONCLUSION

Our results show evidence of favorable outcome of preventive donor-site analgesia with ICNB for harvesting autologous costal cartilage in multiple studies. However, the overall outcomes were insignificant between the two arms.

NO LEVEL ASSIGNED

This journal requires that authors assign a level of evidence to each submission to which Evidence-Based Medicine rankings are applicable. This excludes Review Articles, Book Reviews, and manuscripts that concern Basic Science, Animal Studies, Cadaver Studies, and Experimental Studies. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.

Reduced side effects and improved pain management by continuous ketorolac infusion with patient-controlled fentanyl injection compared with single fentanyl administration in pelviscopic gynecologic surgery: a randomized, double-blind, controlled study

BACKGROUND

A combination of opioids and adjunctive drugs can be used for intravenous patient-controlled analgesia (PCA) to minimize opioid-related side effects. We investigated whether two different analgesics administered separately via a dual-chamber PCA have fewer side effects with adequate analgesia than a single fentanyl PCA in gynecologic pelviscopic surgery.

METHODS

This prospective, double-blind, randomized, and controlled study included 68 patients who underwent pelviscopic gynecological surgery. Patients were allocated to either the dual (ketorolac and fentanyl delivered by a dual-chamber PCA) or the single (fentanyl alone) group. Postoperative nausea and vomiting (PONV) and analgesic quality were compared between the two groups at 2, 6, 12, and 24 h postoperatively.

RESULTS

The dual group showed a significantly lower incidence of PONV during postoperative 2-6 h (P = 0.011) and 6-12 h (P = 0.009). Finally, only two patients (5.7%) in the dual group and 18 (54.5%) in the single group experienced PONV during the entire postoperative 24 h and could not maintain intravenous PCA (odds ratio: 0.056, 95% CI [0.007, 0.229], P < 0.001). Despite the administration of less fentanyl via intravenous PCA during the postoperative 24 h in the dual group than in the single group (66.0 ± 77.8 vs. 383.6 ± 70.1 μg, P < 0.001), postoperative pain had no significant intergroup difference.

CONCLUSIONS

Two different analgesics, continuous ketorolac and intermittent fentanyl bolus, administered via dual-chamber intravenous PCA, showed fewer side effects with adequate analgesia than conventional intravenous fentanyl PCA in gynecologic patients undergoing pelviscopic surgery.

Efficacy of a Combined Periarticular and Intraosseous Multimodal Analgesic Injection Technique in Simultaneous Bilateral Total Knee Arthroplasty: A Randomized Controlled Trial

Introduction Early postoperative pain poses a challenge for surgeons to manage after total knee arthroplasty (TKA). Various techniques have been employed to optimize pain reduction, including Periarticular Multimodal Analgesia (PMA), recognized as a safe and effective method. Our study aims to enhance PMA through a combined intraosseous injection (PMA-I) and compare it with standard PMA. Methods Forty patients undergoing simultaneous bilateral TKA surgery were enrolled. Patients were randomized to receive PMA-I on one side of the knee, while the contralateral knee received standard PMA. Pain scores, bleeding, and range of motion (ROM) were assessed in both groups. Results The PMA-I group demonstrated statistically significant lower visual analog scale (VAS) scores at all postoperative time points, except at 48 hours, where the difference was not statistically significant. Postoperative bleeding and ROM did not significantly differ between groups. Conclusion PMA-I demonstrated both statistically and clinically significant reduction in early post-TKA pain, without additional costs, providing a technique that can be used to optimize postoperative pain control in TKA.

Development of prescribing indicators related to opioid-related harm in patients with chronic pain in primary care-a modified e-Delphi study

BACKGROUND

Long-term opioid use is associated with dependency, addiction, and serious adverse events. Although a framework to reduce inappropriate opioid prescribing exists, there is no consensus on prescribing indicators for preventable opioid-related problems in patients with chronic pain in primary care in the UK. This study aimed to identify opioid prescription scenarios for developing indicators for prescribing opioids to patients with chronic pain in primary care.

METHODS

Scenarios of opioid prescribing indicators were identified from a literature review, guidelines, and government reports. Twenty-one indicators were identified and presented in various opioid scenarios concerning opioid-related harm and adverse effects, drug-drug interactions, and drug-disease interactions in certain disease conditions. After receiving ethics approval, two rounds of electronic Delphi panel technique surveys were conducted with 24 expert panellists from the UK (clinicians, pharmacists, and independent prescribers) from August 2020 to February 2021. Each indicator was rated on a 1-9 scale from inappropriate to appropriate. The score's median, 30th and 70th percentiles, and disagreement index were calculated.

RESULTS

The panel unanimously agreed that 15 out of the 21 opioid prescribing scenarios were inappropriate, primarily due to their potential for causing harm to patients. This consensus was reflected in the low appropriateness scores (median ranging from 1 to 3). There were no scenarios with a high consensus that prescribing was appropriate. The indicators were considered inappropriate due to drug-disease interactions (n = 8), drug-drug interactions (n = 2), adverse effects (n = 3), and prescribed dose and duration (n = 2). Examples included prescribing opioids during pregnancy, concurrently with benzodiazepines, long-term without a laxative prescription and prescribing > 120-mg morphine milligram equivalent per day or long-term duration over 3 months after surgery.

CONCLUSIONS

The high agreement on opioid prescribing indicators indicates that these potentially hazardous consequences are relevant and concerning to healthcare practitioners. Future research is needed to evaluate the feasibility and implementation of these indicators within primary care settings. This research will provide valuable insights and evidence to support opioid prescribing and deprescribing strategies. Moreover, the findings will be crucial in informing primary care practitioners and shaping quality outcome frameworks and other initiatives to enhance the safety and quality of care in primary care settings.

Novel Targets and Drug Delivery System in the Treatment of Postoperative Pain: Recent Studies and Clinical Advancement

Pain is generated by a small number of peripheral targets. These can be made more sensitive by inflammatory mediators. The number of opioids prescribed to the patients can be reduced dramatically with better pain management. Any therapy that safely and reliably provides extended analgesia and is flexible enough to facilitate a diverse array of release profiles would be useful for improving patient comfort, quality of care, and compliance after surgical procedures. Comparisons are made between new and traditional methods, and the current state of development has been discussed; taking into account the availability of molecular and cellular level data, preclinical and clinical data, and early post-market data. There are a number of benefits associated with the use of nanotechnology in the delivery of analgesics to specific areas of the body. Nanoparticles are able to transport drugs to inaccessible bodily areas because of their small molecular size. This review focuses on targets that act specifically or primarily on sensory neurons, as well as inflammatory mediators that have been shown to have an analgesic effect as a side effect of their anti- inflammatory properties. New, regulated post-operative pain management devices that use existing polymeric systems were presented in this article, along with the areas for potential development. Analgesic treatments, both pharmacological and non-pharmacological, have also been discussed.

Efficacy and safety of perioperative use of non-steroidal anti-inflammatory drugs for preemptive analgesia in lumbar spine surgery: a systematic review and meta-analysis

OBJECTIVE

Lumbar spine disorders have become an increasingly common health problem in recent years. Modern clinical studies have shown that perioperative analgesia at certain doses can reduce postoperative pain by inhibiting the process of peripheral sensitization and central sensitization, which is also known as "preemptive analgesia," Non-steroidal anti-inflammatory drugs (NSAIDs) are a class of drugs that achieve antipyretic and analgesic effects by inhibiting cyclooxygenase (COX) and affecting the production of prostaglandins. Our meta-analysis aimed to assess the efficacy and safety of perioperative preemptive analgesia with non-steroidal anti-inflammatory drugs in patients with lumbar spine surgery.

METHODS

We searched PubMed, ScienceDirect, the Cochrane Library, and the Web of Science for randomized controlled trials (RCTs) that met the inclusion criteria. A total of 12 clinical studies were included to assess the efficacy and safety of perioperative NSAIDs preemptive analgesia for lumbar spine surgery.

RESULT

Twelve studies, including 845 patients, met the inclusion criteria. The results showed that perioperative receipt of NSAIDs for preemptive analgesia was effective and safe. Patient's postoperative morphine consumption (P < 0.05), visual analog scale (P < 0.05), and numerical rating scale (P < 0.05) were not statistically associated with postoperative complications (P > 0.05).

CONCLUSION

Our findings suggest that NSAIDs are effective and safe for preemptive analgesia in the perioperative period of lumbar spine surgery and that more and better quality RCTs and more in-depth studies of pain mechanics are still needed.

Efficacy and safety of patient-controlled thoracic epidural analgesia alone versus patient-controlled intravenous analgesia with acetaminophen after laparoscopic distal gastrectomy for gastric cancer: a propensity score-matched analysis

BACKGROUND

Laparoscopic gastrectomy is a common procedure for early gastric cancer treatment. Improving postoperative pain control enhances patient recovery after surgery. The use of multimodal analgesia can potentially enhance the analgesic effect, minimize side effects, and change the postoperative management. The purpose of this study was to evaluate and compare the efficacies of the use of patient-controlled intravenous analgesia with regular acetaminophen (PCIA + Ace) and patient-controlled thoracic epidural analgesia (PCEA) for postoperative pain control.

METHODS

We retrospectively collected the data of 226 patients who underwent laparoscopic distal gastrectomy (LDG) with delta-shaped anastomosis between 2016 and 2019. After 1:1 propensity-score matching, we compared 83 patients who used PCEA alone (PCEA group) with 83 patients who used PCIA + Ace (PCIA + Ace group). Postoperative pain was assessed using a numeric rating scale (NRS) with scores ranging from 0 to 10. An NRS score ≥ 4 was considered the threshold for additional intravenous rescue medication administration.

RESULTS

Although NRS scores at rest were comparable between the PCEA and PCIA + Ace groups, NRS scores of patients in the PCIA + Ace group during coughing or movement were significantly better than those of patients in the PCEA group on postoperative days 2 and 3. The frequency of additional rescue analgesic use was significantly lower in the PCIA + Ace group than in the PCEA group (1.1 vs. 2.7, respectively, p < 0.001). The rate of reduction or interruption of the patient-controlled analgesic dose was higher in the PCEA group than in the PCIA + Ace group (74.6% vs. 95.1%, respectively, p = 0.0002), mainly due to hypotension occurrence in the PCEA group. Physical recovery time, postoperative complication occurrence, and liver enzyme elevation incidence were not significantly different between groups.

CONCLUSIONS

PCIA + Ace can be safely applied without an increase in complications or deterioration in gastrointestinal function; moreover, PCIA + Ace use may provide better pain control than PCEA use in patients following LDG.

Global Trends in Research of Perioperative Analgesia Over Past 10 Years: A Bibliometric Analysis

Background

The postoperative acute pain caused by surgery has been a major problem plaguing anesthesiologists, and even some acute pain progresses to chronic pain syndrome, terribly reducing the quality of life of patients. To this end, increasing attention has been paid to the management of perioperative analgesia. At present, with the increase of research on perioperative analgesia, the understanding and solution of this clinical problem have been further developed. Bibliometrics can estimate research hot-spots and trends of related fields in a certain period of time. However, a systematic bibliometric analysis has not been conducted to explore current research hotspots and future development trends, which is thus the purpose of this study.

Methods

Articles and reviews published from 2012 to 2021 were retrieved from the Web of Science Core Collection (WoSCC) database, and the bibliometric analysis of the keywords and references of articles was performed using VOSviewer1.6.18. Besides, the number of articles related to perioperative analgesia in term of countries, affiliations, authors, and journals were analyzed.

Results

Finally, 3157 articles meeting the screening requirements were retrieved, and it was hereby found that the research on perioperative analgesia had received more attention and interest in the past 10 years, with the United States making more contributions, where there were eight of the top ten affiliations by the number of publications. Kaye AD was the most active researcher in this field. Most related articles were published in Anesthesia and Analgesia, accounting for 2.76% of all literature. Enhanced recovery after surgery, different types of anesthesia and multi-mode analgesic drug intervention were the main trends and hotspots.

Conclusion

Perioperative analgesia has attracted considerable academic interest. In the past decade, the effects of enhanced recovery after surgery, different types of anesthesia and multi-mode analgesic drug intervention on perioperative analgesia have become the research hotspots, which are also likely to be the focus of future study.

Instrument shank-assisted ovariohysterectomy: a randomized clinical trial of surgical and pain alleviation efficiency of a single-person modified technique

Objectives

To evaluate a modified ovariohysterectomy (OHE) technique performed by a single person and compare it with the conventional method based on time efficiency, trauma, and postoperative pain.

Methods

In a prospective, randomized, experimental study, 18 healthy, large, deep-chested, mixed-breed intact female dogs were randomly allocated to conventional (n = 9) and instrument shank-assisted (n = 9) groups. On the basis of video recordings, the various surgical step durations were analyzed: total surgery time (TST), pedicle intervention time (PIT), suspensory release time (SRT), shanking time (ShT), clamping time (ClpT), ligating time (LigT), and closure time (CT). The Glasgow composite pain scale short-form (GCMPS-SF), university of Melbourne pain scale (UMPS), and Visual Analogue Scales (VAS) were used to measure pain. C-reactive protein (CRP) fluctuation was also investigated. These evaluations were completed before and 6, 24, 48, and 72 h postoperatively.

Results

Instrument shank-assisted OHE was less time-consuming than conventional OHE (p = 0.005), improved PIT by 30.7% (6.44 min for both pedicles, p = 0.014), and correlated strongly with TST (ρ = 0.862, p = 0.003 and ρ = 0.955, p = 0.000, respectively). The two method's surgical step durations were also TST = 47.40 ± 9.9 vs. 34.70 ± 6.7 min, PIT = 20.96 ± 5.78 vs. 14.52 ± 3.73 min, SRT = 78.97 ± 69.10 vs. ShT = 20.39 ± 8.18 s (p = 0.035), ClpT = 50.66 ± 45.04 vs. 63.55 ± 37.15 s (p = 0.662), LigT = 12.82 ± 3.37 vs. 8.02 ± 3.11 min (p = 0.005), and CT = 16.40 ± 4.5 vs. 11.60 ± 2.5 min (p = 0.013), respectively. While both techniques inflicted pain on the animals, the novel approach resulted in a reduction of pain at T6 (GCMPS-SF, p = 0.015 and VAS, p = 0.002), T24 (UMPS, p = 0.003), and T48 (GCMPS-SF, p = 0.015 and UMPS, p = 0.050). Both methods exhibited a peak in CRP level after 24 h, which subsequently returned to baseline after 48 h. However, the shank-assisted method demonstrated a significantly lower reduction in CRP level at the 48-h compared to the other group (p = 0.032).

Conclusion

Instrument shank-assisted technique permitted ovarian removal without an assistant, less damage to animals and reducing its time when compared to a conventional technique, and resulting in an alternative that causes less surgical stress and fatigue. Further research with a larger population size is required to determine the serum CRP levels as an alternative pain biomarker.

Preemptive QP001, a fast-acting meloxicam formulation, provides analgesia and reduces opioid consumption following abdominal surgery: a randomized controlled trial

BACKGROUND

QP001, a novel meloxicam formulation, has been developed to manage moderate to severe postoperative pain. This study aimed to evaluate the efficacy and safety of QP001 injections for moderate to severe pain following abdominal surgery.

METHOD

This prospective, multicenter, randomized, double-blind, placebo-controlled clinical trial enlisted patients experiencing moderate to severe pain following abdominal surgery. These patients were randomized to receive either QP001 injections (30 mg or 60 mg) or a placebo pre-surgery. The primary efficacy endpoint was the total morphine consumption within 24 h after the first administration.

RESULTS

A total of 108 patients were enrolled, and 106 patients completed the study. The total morphine consumption in the QP001 30 mg group and 60 mg group, versus placebo group, were significantly lower over the following 24 h (5.11[5.46] vs 8.86[7.67], P = 0.011; 3.11[3.08] vs 8.86[7.67], P < 0.001), respectively. The total morphine consumption in the QP001 30 mg and 60 mg groups, versus placebo group, was also significantly decreased over the following 48 h, including the 24-48 h period (P ≤ 0.001). The QP001 30 mg and 60 mg groups, versus placebo, showed a significant decrease in the area under the curve for pain intensity-time as well as a significant decrease in the effective pressing times of the analgesic pump over the 24 h and 48 h periods (P < 0.05). The QP001 groups, versus placebo, show no significant different in Adverse Events or Adverse Drug Reactions (P > 0.05).

CONCLUSION

Preoperative/preemptive QP001 provides analgesia and reduces opioid consumption in patients with moderate to severe pain following abdominal surgery, while maintaining a favorable safety profile.

Risks and benefits of oral modified-release compared with oral immediate-release opioid use after surgery: a systematic review and meta-analysis

Prescription of modified-release opioids for acute postoperative pain is widespread despite evidence to show their use may be associated with an increased risk of adverse effects. This systematic review and meta-analysis aimed to examine the available evidence on the safety and efficacy of modified-release, compared with immediate-release, oral opioids for postoperative pain in adults. We searched five electronic databases from 1 January 2003 to 1 January 2023. Published randomised clinical trials and observational studies on adults who underwent surgery which compared those who received oral modified-release opioids postoperatively with those receiving oral immediate-release opioids were included. Two reviewers independently extracted data on the primary outcomes of safety (incidence of adverse events) and efficacy (pain intensity, analgesic and opioid use, and physical function) and secondary outcomes (length of hospital stay, hospital readmission, psychological function, costs, and quality of life) up to 12 months postoperatively. Of the eight articles included, five were randomised clinical trials and three were observational studies. The overall quality of evidence was low. Modified-release opioid use was associated with a higher incidence of adverse events (n = 645, odds ratio (95%CI) 2.76 (1.52-5.04)) and worse pain (n = 550, standardised mean difference (95%CI) 0.2 (0.04-0.37)) compared with immediate-release opioid use following surgery. Our narrative synthesis concluded that modified-release opioids showed no superiority over immediate-release opioids for analgesic consumption, length of hospital stay, hospital readmissions or physical function after surgery. One study showed that modified-release opioid use is associated with higher rates of persistent postoperative opioid use compared with immediate-release opioid use. None of the included studies reported on psychological function, costs or quality of life.

Opioid versus non-opioid postoperative pain management in otolaryngology

BACKGROUND

The opioid epidemic in the United States has had devastating consequences, with many opioid-related deaths and a significant economic toll. Opioids have a significant role in postoperative pain management. Here we aim to analyze differences in postoperative opioid and non-opioid pain medications regimens following common otolaryngological surgeries between two large tertiary care medical centers: the Milton S. Hershey Medical Center, USA (HMC) and The Chaim Sheba Medical center, Israel (SMC).

METHODS

A retrospective chart review of patients undergoing common otolaryngological procedures during the years 2017-2019 was conducted at two tertiary care centers, one in the U.S. and the other in Israel. Types and doses of postoperative pain medications ordered and administered during admission were analyzed. Average doses ordered and administered in 24 h were calculated. Opioid medications were converted to a standardized unit of morphine milliequivalents (MME). Chi-square test and Wilcoxon rank-sum test were used to compare the groups.

RESULTS

The study included 204 patients (103 U.S., 101 Israel). Patient demographics were similar except for a longer length of stay in Israel (p < 0.01). In the U.S., 95% of patients were ordered opioids compared to 70% in Israel (P < 0.01). In the U.S., 68.9% of patients ordered opioids received the medications compared to 29.7% in Israel. The median opioid dose ordered in the U.S. was 45MME/24 h compared to 30MME/24 h in Israel (P < 0.01), while median dose received in the U.S. was 15MME/24 h compared to 3.8MME/24 h in Israel (P < 0.01). Opioid prescriptions at discharge were given to 92% of patients in the U.S. compared to 4% of patients in Israel (p < 0.01). A significantly higher number of patients in the U.S. were prescribed acetaminophen and ibuprofen (p < 0.0001). Dipyrone was prescribed to 78% of patients in Israel.

CONCLUSIONS

HMC demonstrated a significantly more permissive approach to both prescribing and consuming opioid medications for postoperative pain management than SMC for similar, common otolaryngological surgeries. Non-opioid alternatives and examining the cultural and medical practice-based differences contributing to the opioid epidemic should be discussed and reevaluated.

Efficacy of Tenoxicam, Paracetamol, and Their Combination in Postoperative Pain After Double-Jaw Surgery

Introduction Orthognathic surgical procedures include a series of surgical operations in which interventions are applied to the maxilla, mandible, or both for occlusal or aesthetic concerns due to facial skeletal development deformities. Double-jaw surgeries have the highest pain scores, in which both maxilla and mandible bones are intervened. This study aimed to compare the efficacy of individual applications of paracetamol and tenoxicam with their combined application on postoperative pain and opioid consumption in patients undergoing double-jaw surgery. Methods In this randomized, double-blind study, 60 patients undergoing double-jaw surgery were allocated into three groups, with each having 20 patients: the paracetamol group, the tenoxicam group, and the paracetamol-tenoxicam combination group. Pain intensity was evaluated using the visual analogue scale (VAS) at intervals of 30 minutes, 60 minutes, 120 minutes, and again at the 24th postoperative hour. Additionally, the consumption of opioids and other rescue analgesics was documented over the 24-hour postoperative period. Results The VAS values at 30 minutes, 60 minutes, and 24 hours were lower in the paracetamol-tenoxicam group compared to the other groups (p<0.001). The need for a rescue analgesic drug in the first 24 hours was not observed in the tenoxicam and paracetamol-tenoxicam groups. Conclusion It was concluded that both tenoxicam and paracetamol-tenoxicam combinations, especially the tenoxicam-paracetamol combination, were good options for postoperative analgesia in patients with double-jaw surgery.

Anesthesia and analgesia for experimental craniotomy in mice and rats: a systematic scoping review comparing the years 2009 and 2019

Experimental craniotomies are a common surgical procedure in neuroscience. Because inadequate analgesia appears to be a problem in animal-based research, we conducted this review and collected information on management of craniotomy-associated pain in laboratory mice and rats. A comprehensive search and screening resulted in the identification of 2235 studies, published in 2009 and 2019, describing craniotomy in mice and/or rats. While key features were extracted from all studies, detailed information was extracted from a random subset of 100 studies/year. Reporting of perioperative analgesia increased from 2009 to 2019. However, the majority of studies from both years did not report pharmacologic pain management. Moreover, reporting of multimodal treatments remained at a low level, and monotherapeutic approaches were more common. Among drug groups, reporting of pre- and postoperative administration of non-steroidal anti-inflammatory drugs, opioids, and local anesthetics in 2019 exceeded that of 2009. In summary, these results suggest that inadequate analgesia and oligoanalgesia are persistent issues associated with experimental intracranial surgery. This underscores the need for intensified training of those working with laboratory rodents subjected to craniotomies.

Systematic review registration

https://osf.io/7d4qe.

A Comprehensive Review on the Efficacy of Nerve Blocks in Reducing Postoperative Anesthetic and Analgesic Requirements

The purpose of this article review is to investigate whether or not nerve blocks are beneficial in minimizing the amount of postoperative anesthetic and analgesic medication required, hence improving patient outcomes and reducing healthcare costs. This review investigates several different kinds of nerve blocks, their administration techniques, and the anatomical and physiological aspects that influence nerve block effectiveness. It analyzes the impact of nerve blocks on opioid use, postoperative pain scores, and the incidence of opioid-related adverse effects by compiling the findings of numerous large-scale, randomized, controlled trials. Infection, hematoma, nerve injury, and systemic toxicity are some potential complications of nerve blocks discussed in the article. It concludes with recommendations for optimizing nerve block techniques in clinical practice and identifies areas that require further research, such as the development of new anesthetics and the identification of patient subgroups that would benefit the most from nerve blocks. In addition, it provides recommendations for optimizing nerve block techniques in clinical practice.

Lack of concentration-dependent local toxicity of highly concentrated (5%) versus conventional 0.5% bupivacaine following musculoskeletal surgery in a rat model

PURPOSE

Various sustained-release formulations incorporate high bupivacaine concentrations but data on local toxicity is lacking. This study explores local toxic effects of highly concentrated (5%) bupivacaine compared to clinically used concentrations in vivo following skeletal surgery, to assess the safety of sustained-release formulations with high bupivacaine concentrations.

METHODS

Sixteen rats underwent surgery, in which screws with catheters affixed were implanted in the spine or femur in a factorial experimental design, allowing single-shot or continuous 72 h local administration of 0.5%, 2.5% or 5.0% bupivacaine hydrochloride. During the 30-day follow-up, animal weight was recorded and blood samples were obtained. Implantation sites underwent histopathological scoring for muscle damage, inflammation, necrosis, periosteal reaction/thickening and osteoblast activity. Effects of bupivacaine concentration, administration mode and implantation site on local toxicity scores were analyzed.

RESULTS

Chi-squared tests for score frequencies revealed a concentration-dependent decrease in osteoblast count. Moreover, spinal screw implantation led to significantly more muscle fibrosis but less bone damage than femoral screw implantation, reflecting the more invasive muscle dissection and shorter drilling times related to the spinal procedure. No differences between bupivacaine administration modes regarding histological scoring or body weight changes were observed. Weight increased, while CK levels and leukocyte counts decreased significantly during follow-up, reflecting postoperative recovery. No significant differences in weight, leukocyte count and CK were found between interventional groups.

CONCLUSION

This pilot study found limited concentration-dependent local tissue effects of bupivacaine solutions concentrated up to 5.0% following musculoskeletal surgery in the rat study population.

Pregabalin supplementation for the pain relief of septorhinoplasty: a meta-analysis study

BACKGROUND

Pregabalin supplementation may have some potential in improving pain relief in patients with septorhinoplasty, and this meta-analysis aims to explore the impact of pregabalin supplementation on pain control for septorhinoplasty.

METHODS

PubMed, EMbase, Web of science, EBSCO and Cochrane library databases were systematically searched, and we included randomized controlled trials (RCTs) assessing the effect of pregabalin supplementation on pain control for septorhinoplasty.

RESULTS

Six RCTs were finally included in the meta-analysis. Overall, when compared with control intervention for septorhinoplasty, pregabalin intervention showed significantly reduced pain scores at 1 h (SMD - 1.05; 95% CI - 1.85 to - 0.24; P = 0.01), 2 h (SMD - 1.01; 95% CI - 1.83 to - 0.20; P = 0.02), 6 h (SMD - 1.00; 95% CI - 1.47 to - 0.54; P < 0.0001) and 12 h (SMD - 0.69; 95% CI - 1.35 to - 0.02; P = 0.04), as well as rescue analgesics (OR 0.17; 95% CI 0.07 to 0.44; P = 0.0002), but had no notable influence on nausea and vomiting (OR 0.67; 95% CI 0.30 to 1.46; P = 0.31), or drowsiness (OR 1.22; 95% CI 0.64 to 2.35; P = 0.54).

CONCLUSIONS

Pregabalin supplementation benefits to pain control after septorhinoplasty.

Comparison of a Non-Opioid Multimodal Analgesia Protocol with Opioid-Based Patient-Controlled Analgesia for Pain Control Following Robot-Assisted Radical Prostatectomy: A Randomized, Non-Inferiority Trial

Background

Opioid use after surgery is a potential contributor to the opioid epidemic. An adequate pain control method after surgery while minimizing opioid exposure is needed. This study aimed to compare the effect of non-opioid multimodal analgesia (NOMA) protocol with opioid-based patient-controlled analgesia (PCA) for pain relief after robot-assisted radical prostatectomy (RARP).

Methods

This prospective randomized, open, non-inferiority trial included 80 patients scheduled for RARP. The NOMA group received pregabalin, paracetamol, bilateral quadratus lumborum block, and pudendal nerve block. PCA group received PCA. Pain scores, postoperative nausea and vomiting, opioid requirements, and quality of recovery were recorded 48 hours after surgery.

Results

We found no significant differences in pain scores. The mean difference in pain score during rest at 24 h was 0.5 (95% CI -0.5 to 2.0). This result demonstrated the non-inferiority of NOMA protocol to PCA at our non-inferiority margin (-1). In addition, 23 patients in the NOMA group did not receive any opioid agonist for 48 h after surgery. Recovery of bowel function was also faster in the NOMA group than in the PCA group (25.0 hours vs 33.4 hours, p = 0.01).

Limitations

We did not evaluate whether our NOMA protocol could decrease the incidence of new continuous opioid use after surgery.

Conclusion

NOMA protocol successfully controlled postoperative pain and was non-inferior to morphine-based PCA regarding patient-reported pain intensity. It also promoted recovery of bowel function and decreased postoperative nausea and vomiting.

Fixed Dose Versus Loose Dose: Analgesic Combinations

Combinations of drugs may be fixed (two or more entities in a single product) or loose (two or more agents taken together but as individual agents) to help address multimechanistic pain. The use of opioids plus nonopioids can result in lower opioid consumption without sacrificing analgesic benefits. Drug combinations may offer additive or synergistic benefits. A variety of fixed-dose combination products are available on the market such as diclofenac plus thiocolchicoside, acetaminophen and caffeine, acetaminophen and opioid, ibuprofen and acetaminophen, tramadol and acetaminophen, and others. Fixed-dose combination products offer predictable pharmacokinetics and pharmacodynamics, known adverse events, and can reduce the pill burden. However, they are limited to certain drug combinations and doses; loose dosing allows prescribers the versatility to meet individual patient requirements as well as the ability to titrate as needed. Not all drug combinations offer synergistic benefits, which depend on the drugs and their doses. Certain drugs offer dual mechanisms of action in a single molecule, such as tapentadol, and these may further be used in combination with other analgesics. New technology allows for co-crystal productions of analgesic agents which may further improve drug characteristics, such as bioavailability. Combination analgesics are important additions to the analgesic armamentarium and may offer important benefits at lower doses than monotherapy.

Oliceridine for the Management of Moderate to Severe Acute Postoperative Pain: A Narrative Review

Despite current advances in acute postoperative pain management, prevalence remains high. Inadequate treatment could lead to poor outcomes and even progression to chronic pain. Opioids have traditionally been the mainstay for treatment of moderate to severe acute pain. However, their use has been associated with opioid-related adverse events (ORAEs), such as respiratory depression, sedation, nausea, vomiting, pruritus, and decreased bowel motility. In addition, their liberal use has been implicated in the current opioid epidemic. As a result, there has been renewed interest in multimodal analgesia to target different mechanisms of action in order to achieve a synergistic effect and minimize opioid usage. Oliceridine is a novel mu-opioid receptor agonist that is part of a new class of biased ligands that selectively activate G-protein signaling and downregulate β-arrestin recruitment. Since G-protein signaling has been associated with analgesia while β-arrestin recruitment has been associated with ORAEs, there is potential for a wider therapeutic window. In this review, we will discuss the clinical evidence behind oliceridine and its potential role in acute postoperative pain management. We have systematically searched the PubMed database using the keywords oliceridine, olinvyk, and trv130. All articles identified were reviewed and evaluated, and all clinical trials were included.

Effect of Ultrasound-Guided Transversus Abdominis Plane Block Combined with Patient-Controlled Intravenous Analgesia on Postoperative Analgesia After Laparoscopic Cholecystectomy: a Double-Blind, Randomized Controlled Trial

PURPOSE

To compare the effect of ultrasound-guided transversus abdominis plane block (TAPB) combined with patient-controlled intravenous analgesia (PCIA) and PCIA alone on analgesia after laparoscopic cholecystectomy (LC).

METHODS

In this double-blind, randomized controlled trial, 160 patients undergoing LC were randomized into the TAPB group (n = 80) and PCIA group (n = 80). Bilateral ultrasound-guided TAPB was performed with 20 mL 0.5% ropivacaine and the PCIA pump was given after LC in the TAPB group. The PCIA group received the PCIA pump alone as a control group. The primary outcome was postoperative pain, assessed by the visual analog scale (VAS).

RESULTS

VAS pain (including abdominal wall pain or visceral pain) scores at rest and coughing were significantly lower in the TAPB group at 1, 4, 12, 24, 36, and 48 h after LC (P < 0.05). Postoperative additional analgesic needs, analgesic pump compressions, and PCIA analgesic dosages, and total morphine equivalents were significantly reduced in the TAPB group, and postoperative hospital stay, total hospitalization expenses, expenses within 24 h or 48 h (from analgesia and adverse reactions), and patient satisfaction were significantly higher in the TAPB group than the PCIA group (all P < 0.05). No significant between-group differences were observed in operation time, intraoperative blood loss, unplugging the analgesic pump due to adverse reactions, first exhaust time, and postoperative adverse events between the two groups.

CONCLUSIONS

Ultrasound-guided TAPB combined with PCIA was an effective and safe perioperative analgesic technique for patients undergoing LC compared to PCIA only.

A Multimodal Pain Management Regimen for Open Treatment of Distal Radius Fractures: A Randomized Blinded Study

BACKGROUND

Adequate pain control is critical after outpatient surgery where patients are not as closely monitored. A multimodal pain management regimen was compared to a conventional pain management method in patients undergoing operative fixation for distal radius fractures. We hypothesized that there would be a decrease in the amount of narcotics used by the multimodal group compared to the conventional pain management group, and that there would be no difference in bone healing postoperatively.

METHODS

Forty-two patients were randomized into 2 groups based on pain protocols. Group 1, the control, received a regional block, acetaminophen, and oxycodone. Group 2 received a multimodal pain regimen consisting of daily doses of pregabalin, celecoxib, and acetaminophen up until postoperative day (POD) #3. They also received a regional block with oxycodone for breakthrough pain.

RESULTS

From POD#3 to week 1, there was a significant increase in oxycodone use in the study group correlating with the point in time when the multimodal regimen was discontinued. The shortened Disabilities of the Arm, Shoulder, and Hand Questionnaire (QuickDASH) scores taken at 2 weeks postoperation showed a significantly lower average score in the study group compared to the control. There was no difference in bone healing.

CONCLUSIONS

The 2 regimens yielded similar pain control after surgery. The rebound increase in narcotic use after the multimodal regimen was discontinued, and significant difference in QuickDASH scores seen at 2 weeks postoperatively supported that multimodal regimens may not necessarily lead to decreased narcotic use in outpatient upper extremity surgery, but in the short term are shown to improve functional status.

Postoperative Nausea and Vomiting in Opioid-Free Anesthesia Versus Opioid Based Anesthesia in Laparoscopic Cholecystectomy

Background: Postoperative nausea and vomiting (PONV) is a usual complication in patients undergoing laparoscopic cholecystectomy. Minimized opioid use due to surgery has been shown to have a better effect on patient recovery after surgery. In this study we evaluate the effect of opioid free anesthesia for postoperative nausea and vomiting in laparoscopic cholecystectomy. Materials and methods: 80 patients aged 20-65 years old were included in this randomized, clinical and prospective trial. The patients belonged to the ASA classifications 1 and 2 and were scheduled for laparoscopic cholecystectomy. Patients were classified into two groups: group 1 (fentanyl group- FG), which included 40 patients who received opioid anesthesia, and group 2 (opioid free anesthesia group-OFAG) which included 40 patients who received opioid free anesthesia. In patients from group 1 (fentanyl group -FG) introduction to general anesthesia consisted of giving midazolam at 0.04 mg/kg, fentanyl at 0.002 mg/kg, 2 mg/kg of propofol and 0.6 mg/kg of rocuronium bromide. These patients received fractionated bolus doses of fentanyl during surgery. Prior to general anesthesia these patients did not receive dexamethasone. The patients from group 2 (opioid free anesthesia group - OFAG) received dexamethasone at 0.1 mg/kg and 1 g of paracetamol before introduction to anesthesia as a pre-emptive analgesia. Introduction to anesthesia consisted of giving midazolam at 0.04 mg/kg, lidocaine at 1 mg/kg, propofol at 2 mg/kg, ketamine at 0.5 mg/kg, and 0.6 mg/kg of rocuronium bromide. Immediately after intubation, continuous intravenous infusion with lidocaine at 2 mg/kg/h and magnesium sulfate at 1.5 g/h was given. In this group, fentanyl was not given either during the introduction of anesthesia or during the intraoperative period. Immediately after extraction of the gallbladder patients from group 2 (OFAG) received 2.5 g of metamizole intravenously. PONV were recorded in the postoperative period of 24 hours after surgery. Results: There was no significant difference with respect to age, weight, sex, duration of surgery, and anesthesia time. PONV at different time intervals were statistically not significant at all postoperative time points - 1 hr, 4 hr, 8 hr, 12 hr and 24 hr after surgery in fentanyl group compared to opioid free anesthesia group. Even not statistically significant, PONV have occurred more often in patients who received opioid anesthesia. Conclusion: Postoperative nausea and vomiting occurs more often in patients who received opioids during laparoscopic cholecystectomy compared to patients who received opioid free anesthesia, but without statistical significance.

Multimodal Pain Management in Orthopedic Surgery

Background: Orthopedic surgery typically results in moderate to severe pain in a majority of patients. Opioids were traditionally the primary medication to target mechanisms of pain transmission. Multimodal analgesia has become a preferred method of pain management in orthopedic practice. Utilizing more than one mode to address post-surgical pain by recruiting multiple receptors through different medications accelerates the recovery process and decreases the need for opioids. By implementing effective analgesic techniques and interventions, this practice, in turn, decreases the usage of perioperative opioids, and in the long term, prevents addiction to pain medications and risk of opioid overdose. In orthopedic surgeries, previous studies have found that multimodal analgesia has reduced early opioid usage in the postoperative course. Pain is the result of direct injury to the nervous system, with a wide variety of chemicals directly stimulating or sensitizing the peripheral nociceptors. The pathophysiology behind the mechanism of post-surgical pain, along with the importance of preoperative, perioperative, and postoperative pain regimens are emphasized. A brief overview of pain medications and their properties is provided. These medications are further categorized, with information on special considerations and typical dosage requirements. Pain management should address both neuropathic and subjective types of pain. Effective pain control requires constant reassessment with individualized strategies. Conclusion: By focusing on multimodal analgesia, anesthesiologists can now utilize newer techniques for postoperative pain relief from orthopedic surgery, with better short-term and long-term outcomes for the patient.

A novel long-acting local anesthetic - HTX-011 (ZYNRELEF™) for postoperative pain control

INTRODUCTION

Pain following most surgical procedures is expected. However, the treatment and management of postoperative surgical pain has remained challenging. The use of opioid therapy has increasingly become controversial given the limited therapeutic window of these drugs, the adverse side effects, and the potential for abuse. A multimodal approach to the treatment of postoperative pain has been shown to improve pain outcomes after surgery and improve patient satisfaction. Here, we examine a new formulation of bupivacaine and meloxicam extended-release solution HTX-011 (Zenrelef®), and its efficacy in postoperative pain control.

AREAS COVERED

HTX-011 exists as an extended-release polymer that controls the release of the active ingredients over 72 hours. A systematic approach was taken to review PubMed (Medline) for prospective and retrospective studies related to the use of HTX-011 for the management of postoperative pain.

EXPERT OPINION

HTX-011 represents a new tool to help modulate postoperative pain. Although multimodal analgesia has been effective in managing postoperative pain, direct surgical infiltration with local anesthetics has had limited efficacy due to their short duration of action. The HTX-011 formulation provides a long-acting local anesthetic at the surgical site which provides a longer period of analgesia while maintaining a favorable safety profile.

Efficacy and Safety of Lidocaine Patch in the Management of Acute Postoperative Wound Pain: A Comprehensive Systematic Review and Meta-analysis of Randomized Controlled Trials

OBJECTIVE

This study sought to quantify the pooled effects of lidocaine patch (LP) on postoperative pain and side-effects through a comprehensive review and meta-analysis.

APPROACH

The study followed PRISMA, AMSTAR and the Cochrane Collaboration. Randomized controlled trials s comparing LP with placebo were retrieved from five electronic databases. Primary outcome in the study was cumulative intravenous morphine equivalent consumption (mg) within 24 hours postoperatively.

RESULTS

Twelve trials comprising 617 patients were included in the final analysis. Primary result indicated that the analgesic effects LP were only statistical but not clinically significant of postoperative intravenous morphine consumption within 24 hours (mean difference, -4.61 mg; 95% CI, -8.09, -1.14). Interestingly, the results of subgroup and meta-regression analysis indicated that preoperative administration of LP had potential advantages in postoperative wound pain management. It is also worthwhile to mention that LP provided a clinically important benefit in rest pain scores within 24-hour postoperatively. Apart from these, other secondary outcome analysis did not uncover any particularly significant analgesic or safety advantages to LP. Finally, LP also does not increase the risk of any local anesthetic-related side effects.

INNOVATION

This systematic review and meta-analysis provides moderate-to-high quality evidence undermining the role of LP for management of acute postoperative wound pain following surgical procedures and the justification for the associated extra costs.

CONCLUSION

Taken together, the current evidence does not support LP as part of a routine multimodal analgesia strategy to alleviate early postoperative acute pain. However, further studies should explore the clinical value of preoperative administration and the long-term effect of LP.

Impact of Opioid-Free Anesthesia on Analgesia and Recovery Following Bariatric Surgery: a Meta-Analysis of Randomized Controlled Studies

This meta-analysis aimed at exploring the impact of opioid-free anesthesia (OFA) on pain score and opioid consumption in patients undergoing bariatric surgery (BS). Literature search identified eight eligible trials. Forest plot revealed a significantly lower pain score (mean difference (MD) =  - 0.96, p = 0.0002; 318 patients), but not morphine consumption (MD =  - 5.85 mg, p = 0.1; 318 patients) at postoperative 24 h in patients with OFA than in those without. Pooled analysis also showed a lower pain score (p = 0.002), morphine consumption (p = 0.0003) in the postanesthetic care unit, and risk of postoperative nausea/vomiting (p = 0.0003) in the OFA group compared to the controls. In conclusion, this meta-analysis demonstrated that opioid-free anesthesia improved pain outcomes immediately and at 24 h after surgery without a beneficial impact on opioid consumption at postoperative 24 h. KEY POINTS: • Roles of opioid-free anesthesia (OFA) in bariatric surgery (BS) were investigated. • Outcomes included postoperative pain score, opioid use, and nausea/vomiting risk. • OFA was associated with lower 24-h pain score but not opioid consumption. • Lower pain score and opioid consumption were noted in the postanesthetic care unit. • OFA correlated with a lower risk of postoperative nausea/vomiting.

Randomized Comparative Study Between Bilateral Erector Spinae Plane Block and Transversus Abdominis Plane Block Under Ultrasound Guidance for Postoperative Analgesia After Total Abdominal Hysterectomy

Introduction: Ultrasound-guided erector spinae plane (ESP) block has emerged as an effective and safe analgesic regional technique and it also provides visceral pain relief. Our aim was to compare the analgesic efficacy of ESP block over transversus abdominis plane (TAP) block under ultrasound guidance following a total abdominal hysterectomy.

Methods: This was a prospective, randomized, comparative study. Thirty females posted for elective open total abdominal hysterectomy under general anesthesia were randomly allocated into two groups. Ultrasound-guided ESP block was applied in group E at the T-9 level bilaterally. The study solution was prepared by mixing 20 ml of 0.5% bupivacaine plus 10 ml of 2% lignocaine and 1 ml (50mcg) of fentanyl and 9 ml of normal saline forming total 40 ml of which 20 ml was injected on each side. Group T received ultrasound-guided TAP block with 20 ml of study solution bilaterally. The study solution was prepared similarly by mixing 20 ml of 0.5% bupivacaine plus 10 ml of 2% lignocaine and 1 ml (50mcg) of fentanyl and 9 ml of normal saline (total 40 ml) of which 20 ml was injected into each side. Tramadol 100mg iv was given as rescue analgesia whenever NRS ≥ 4 or on-demand in the postoperative period. The primary outcome was changes in a numerical rating scale (NRS) pain score postoperatively between two groups in 24 h, duration of analgesia and total rescue analgesic required during 24 h. The secondary outcome was patient satisfaction level and side effects if any.

Results: Demographic data were comparable in both groups. The NRS pain score was significantly lower ​​​​in group E than in group T at second, third, fourth, fifth (p < 0.001) and at sixth hour (p < 0.05) postoperatively. The mean duration of analgesia was significantly more in Group E (4.73±0.7 h) compared to group T (2.60±0.51 h) (p < 0.001). The tramadol consumption was seen significantly more in 24 h in group T (233.33±25.82 mg) than in group E (193.33±17.59 mg). Patient satisfaction score was significantly higher at 12 h with mean value of 6.07±0.26 in group E compared to 3.40±0.91 in group T.

Conclusion: We conclude that ultrasound-guided ESP block provide better postoperative pain control and prolonged duration of analgesia with less tramadol consumption compared to ultrasound-guided TAP block in patients after total abdominal hysterectomy.

Postoperative pain treatment after spinal fusion surgery: a systematic review with meta-analyses and trial sequential analyses

Supplemental Digital Content is Available in the Text.

Patients undergoing spinal surgery are at high risk of acute and persistent postoperative pain. Therefore, adequate pain relief is crucial. This systematic review aimed to provide answers about best-proven postoperative analgesic treatment for patients undergoing lumbar 1- or 2-level fusions for degenerative spine diseases. We performed a search in PubMed, Embase, and The Cochrane Library for randomized controlled trials. The primary outcome was opioid consumption after 24 hours postoperatively. We performed meta-analyses, trial sequential analyses, and Grading of Recommendations assessment to accommodate systematic errors. Forty-four randomized controlled trials were included with 2983 participants. Five subgroups emerged: nonsteroidal anti-inflammatory drugs (NSAIDs), epidural, ketamine, local infiltration analgesia, and intrathecal morphine. The results showed a significant reduction in opioid consumption for treatment with NSAID (P < 0.0008) and epidural (P < 0.0006) (predefined minimal clinical relevance of 10 mg). Concerning secondary outcomes, significant reductions in pain scores were detected after 6 hours at rest (NSAID [P < 0.0001] and intrathecal morphine [P < 0.0001]), 6 hours during mobilization (intrathecal morphine [P = 0.003]), 24 hours at rest (epidural [P < 0.00001] and ketamine [P < 0.00001]), and 24 hours during mobilization (intrathecal morphine [P = 0.03]). The effect of wound infiltration was nonsignificant. The quality of evidence was low to very low for most trials. The results from this systematic review showed that some analgesic interventions have the capability to reduce opioid consumption compared with control groups. However, because of the high risk of bias and low evidence, it was impossible to recommend a “gold standard” for the analgesic treatment after 1- or 2-level spinal fusion surgery.

[Liposomal bupivacaine-No breakthrough in postoperative pain management]

One of the main limitations concerning the use of local anesthetics is due to their restricted duration of action. In recent years, liposomal formulations with prolonged release kinetics have been developed to extend the pharmacological duration of action of the 1‑stage peripheral regional anesthesia (single-shot procedure) and thus bring about a longer duration of action. The focus here is particularly on achieving postoperative freedom from pain for at least 24 h (or even better 48 h) and thus early mobilization of patients using on-demand medication causing (at most) minor local sensory blockade without causing motor impairments (at least that is the ideal). Therefore, methods of utilizing slow-release drugs as seen in liposomal carrier systems have experienced increasing scientific attention in the last few years. A common modern pharmacological example with a theoretically significantly longer duration of action is liposomal bupivacaine, an amide local anesthetic. Due to a multivesicular liposome structure, the retarded release of the active component bupivacaine HCl leads to a theoretical pharmacological effectiveness of up to 72 h. Previous studies consistently showed a safety profile comparable to conventional bupivacaine HCl. Liposomal bupivacaine has been approved by the U.S. Food and Drug Administration (FDA) under the trade name Exparel© (Pacira Pharmaceuticals, Parsippany, NJ, USA) since 2011; however, its use is currently limited to local wound infiltration, transverse abdominis plane (TAP) blocks, and interscalene nerve blocks of the brachial plexus. In 2020, the European Medicines Agency (EMA) also approved the use of liposomal bupivacaine for blockade of the brachial plexus or the femoral nerve and as a field block or for wound infiltration to treat postoperative pain. So far, studies on the clinical effectiveness of liposomal bupivacaine have been very heterogeneous and there have been no conclusive meta-analyses with sufficient rigor or significance. Recent systematic reviews and meta-analyses, combining the results of clinical studies regarding the analgesic efficiency of liposomal bupivacaine in different fields of application, consistently refuted any benefit of clinical relevance provided by the liposomal formulation. There is currently sufficient evidence to now end the ongoing debate around liposomal bupivacaine. The aim of this work is to give the reader a current, evidence-based overview of this substance.

Diagnosis, Treatment, and Management of Painful Scar: A Narrative Review

Painful scars can develop after surgery or trauma, with symptoms ranging from a minor itch to intractable allodynia. The problem of the painful scar may involve both intraneural and extraneural structures, requiring a systematic approach to diagnosis and treatment of this neuropathic pain condition that can impact quality of life and function profoundly. In this review, we outline the algorithm for the diagnosis, management, medical and surgical treatment of painful scars.

Comparison of Multimodal Cocktail to Ropivacaine Intercostal Nerve Block for Chest Pain After Costal Cartilage Harvest: A Randomized Controlled Trial

Objective: To compare the effectiveness of an intercostal nerve block after costal cartilage harvest when a multimodal cocktail or ropivacaine plus patient-controlled analgesia is used, as measured by visual analog scale (VAS) scores, rescue analgesic consumption, and related complications. Materials and Methods: Eligible patients who underwent costal cartilage harvest were equally randomized to receive a multimodal cocktail (multimodal group) or ropivacaine plus patient-controlled analgesia (ropivacaine group). Results: Of 112 patients assessed, 12 (10.7%) patients were excluded and 100 (89.3%) patients were enrolled and assigned to multimodal group (n = 50) and ropivacaine group (n = 50). The VAS scores in the multimodal group were significantly lower than those in the ropivacaine group both at rest (0.924 ± 0.073 vs. 1.920 ± 0.073, p < 0.001) and during coughing (2.340 ± 0.083 vs. 3.944 ± 0.083, p < 0.001) in mixed-effects model analysis. Rescue analgesic consumption and rate of complications were significantly lower in the multimodal group compared with the ropivacaine group (all p < 0.05). Conclusions: Multimodal cocktail improved chest pain after costal cartilage harvest with less rescue analgesic consumption and complications compared with ropivacaine plus patient-controlled analgesia. Clinical Trial Registration: ChiCTR2100042445.

Associations of Multimodal Analgesia With Postoperative Pain Trajectories and Morphine Consumption After Hepatic Cancer Surgery

Background

This study aimed to investigate the influential factors of postoperative pain trajectories and morphine consumption after hepatic cancer surgery with a particular interest in multimodal analgesia.

Methods

Patients receiving hepatic cancer surgery at a tertiary medical center were enrolled between 2011 and 2016. Postoperative pain scores and potentially influential factors like patient characteristics and the analgesic used were collected. Latent curve analysis was conducted to investigate predictors of postoperative pain trajectories and a linear regression model was used to explore factors associated with postoperative morphine consumption.

Results

450 patients were collected, the daily pain scores during the first postoperative week ranged from 2.0 to 3.0 on average. Male and higher body weight were associated with more morphine consumption (both P < 0.001) but reduced morphine demand was noted in the elderly (P < 0.001) and standing acetaminophen users (P = 0.003). Longer anesthesia time was associated with higher baseline pain levels (P < 0.001). In contrast, male gender (P < 0.001) and standing non-steroidal anti-inflammatory drugs (NSAIDs) use (P = 0.012) were associated with faster pain resolution over time.

Conclusions

Multimodal analgesia with standing acetaminophen and NSAIDs had benefits of opioid-sparing and faster pain resolution, respectively, to patients receiving hepatic cancer surgery.