ERAS Protocol Options for Perioperative Pain Management of Substance Use Disorder in the Ambulatory Surgical Setting.

Even prior to the COVID-19 pandemic, rates of ambulatory surgeries and ambulatory patients presenting with substance use disorder were increasing, and the end of lockdown has further catalyzed the increasing rates of ambulatory patients presenting for surgery with substance use disorder (SUD). Certain subspecialty groups of ambulatory procedures have already established protocols to optimize early recovery after surgery (ERAS), and these groups have subsequently enjoyed improved efficiency and reduced adverse outcomes as a result. In this present investigation, we review the literature as it relates to substance use disorder patients, with a particular focus on pharmacokinetic and pharmacodynamic profiles, and their resulting impact on the acute- or chronic user ambulatory patient. The systematic literature review findings are organized and summarized. We conclude by identifying areas of opportunity for further study, specifically with the aim of developing a dedicated ERAS protocol for substance use disorder patients in the ambulatory surgery setting. - Healthcare in the USA has seen an increase in rates of both substance use disorder patients and separately in ambulatory surgery cases. - Specific perioperative protocols to optimize outcomes for patients who suffer from substance use disorder have been described in recent years. - Agents of interest like opioids, cannabis, and amphetamines are the top three most abused substances in North America. - A protocol and recommend further work should be done to integrate with concrete clinical data, in which strategies should be employed to confer benefits to patient outcomes and hospital quality metrics like those enjoyed by ERAS protocol in other settings.

Enhanced Recovery After Surgery: Opioid Sparing Strategies After Discharge: A Review.

PURPOSE OF REVIEW: Many surgical subspecialties have developed enhanced recovery after surgery (ERAS) protocols that focus on multimodal analgesia to limit opioid use during a hospital stay and improve patient recovery. Unfortunately, ERAS protocols do not extend to post-discharge patient care, and opioids continue to be over prescribed. The primary reason seems to be a lack of good quality research evaluating extended use of a multimodal analgesic approach. This review was undertaken to evaluate available evidence for non-opioid analgesics in the postoperative period after discharge, utilizing Pubmed, Scopus, and Google Scholar. RECENT FINDINGS: Several studies have explored strategies to reduce the overprescribing of opioids after surgery without worsening postoperative pain scores or complications. However, these studies do not necessarily reflect on situations where an ultra-restrictive protocol may fail, leading to breakthrough pain. Ultra-restrictive opioid protocols, therefore, could risk undertreatment of acute pain and the development of persistent post-surgical pain, highlighting the need for a review of non-opioid strategies. Our findings show that little research has been conducted on the efficacy of non-opioid therapies post-discharge including acetaminophen, NSAIDs, gabapentin, duloxetine, venlafaxine, tizanidine, valium, and oral ketamine. Further studies are warranted to more precisely evaluate the utility of these agents, specifically for their side effect profile and efficacy in improving pain-control and function while limiting opioid use.

Review of the Current State of Urine Drug Testing in Chronic Pain: Still Effective as a Clinical Tool and Curbing Abuse, or an Arcane Test?

PURPOSE OF REVIEW: Therapeutic use, misuse, abuse, and diversion of controlled substances in managing chronic non-cancer pain remain a major concern for physicians, the government, payers, and patients. The challenge remains finding effective diagnostic tools that can be clinically validated to eliminate or substantially reduce the abuse of controlled prescription drugs, while still assuring the proper treatment of those patients in pain. Urine drug testing still remains an important means of adherence monitoring, but questions arise as to its relevance and effectiveness. This review examines the role of UDT, determines its utility in current clinical practice, and investigates its relevance in current chronic pain management. RECENT FINDINGS: A review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. Literature was searched from year 2000 to present examining the relevance and role of UDT in monitoring chronic opioid therapy along with reliability and accuracy, appropriate use, overuse, misuse, and abuse. There are only a limited number of reviews and investigations on UDT, despite the fact that clinicians who prescribe controlled medications for chronic states commonly are expected to utilize UDT. Therefore, despite highly prevalent use, there is a limited publication base from which to draw in this present study. Regardless of experience or training background, physicians and healthcare providers can much more adequately assess opioid therapy with the aid of UDT, which often requires confirmatory testing by a laboratory for clinical and therapeutic prescribing decisions. It has become a strongly recommended aspect of pain care with controlled substances locally, regionally, and nationally. Incorporating UDT for all patients in whom chronic opioid therapy is undertaken is consistent with state and national guidelines and best practice strategies. Practice standards vary as to the frequency of UDT locally, regionally, and nationally, however.

Pharmacogenomics of Pain Management: The Impact of Specific Biological Polymorphisms on Drugs and Metabolism.

PURPOSE OF REVIEW: Pain is multifactorial and complex, often with a genetic component. Pharmacogenomics is a relative new field, which allows for the development of a truly unique and personalized therapeutic approach in the treatment of pain. RECENT FINDINGS: Until recently, drug mechanisms in humans were determined by testing that drug in a population and calculating response averages. However, some patients will inevitably fall outside of those averages, and it is nearly impossible to predict who those outliers might be. Pharmacogenetics considers a patient's unique genetic information and allows for anticipation of that individual's response to medication. Pharmacogenomic testing is steadily making progress in the management of pain by being able to identify individual differences in the perception of pain and susceptibility and sensitivity to drugs based on genetic markers. This has a huge potential to increase efficacy and reduce the incidence of iatrogenic drug dependence and addiction. The streamlining of relevant polymorphisms of genes encoding receptors, transporters, and drug-metabolizing enzymes influencing the pain phenotype can be an important guide to develop safe new strategies and approaches to personalized pain management. Additionally, some challenges still prevail and preclude adoption of pharmacogenomic testing universally. These include lack of knowledge about pharmacogenomic testing, inadequate standardization of the process of data handling, questionable benefits about the clinical and financial aspects of pharmacogenomic testing-guided therapy, discrepancies in clinical evidence supporting these tests, and doubtful reimbursement of the tests by health insurance agencies.

Novel Agents in Neuropathic Pain, the Role of Capsaicin: Pharmacology, Efficacy, Side Effects, Different Preparations.

PURPOSE OF REVIEW: Capsaicin is a natural substance used to treat neuropathic pain because of its ability to be used in a more direct form on patients and efficiently treat their pain without the amount of side effects seen in the use of oral medications. RECENT FINDINGS: Currently, the treatments for neuropathic pain are, control of the underlying disease process, then focused on symptomatic relief with pharmacotherapy, topical analgesics, or other interventions. When all pharmacological agents fail to relieve the pain, interventional strategies can be considered, such as neural blocks, spinal cord stimulation, and intrathecal administered medications. The response to current treatment of neuropathic pain is only modest relief of symptoms. Multiple treatment options may be attempted, while ultimately leaving patients with refractory neuropathic pain. For these reasons, a better treatment approach to neuropathic pain is greatly needed. Overall, capsaicin has great potential for becoming a first- or second-line treatment for neuropathic pain, and for becoming a therapeutic option for many other neuropathic pain-related disease states.

Exparel for Postoperative Pain Management: a Comprehensive Review.

PURPOSE OF REVIEW: Multimodal pain management is the most effective way to treat postsurgical pain. However, the use of opioids for acute pain management has unfortunately been a significant contributor to the current opioid epidemic. The use of opioids should be limited and only considered a "rescue" pain medication after other modalities of pain management have been utilized. RECENT FINDINGS: It may be difficult to curtail the use of opioids in the treatment of chronic pain; however, in the postsurgical setting, there is compelling evidence that an opioid-centric analgesic approach is not necessary for good patient outcomes and healthcare cost benefits. Opioid-related adverse effects are the leading cause of preventable harm in the hospital setting. After the realization in recent years of the many harmful effects of opioids, alternative regimens including the use of multimodal analgesia have become a standard practice in acute pain management. Exparel, a long-lasting liposomal bupivacaine local anesthetic agent, has many significant benefits in the management of postoperative pain. Overall, the literature suggests that Exparel may be a significant component for postoperative multimodal pain control owing to its efficacy and long duration of action.

Dexmedetomidine in Enhanced Recovery After Surgery (ERAS) Protocols for Postoperative Pain.

PURPOSE OF REVIEW: Effective acute pain management has evolved considerably in recent years and is a primary area of focus in attempts to defend against the opioid epidemic. Persistent postsurgical pain (PPP) has an incidence of up to 30-50% and has negative outcome of quality of life and negative burden on individuals, family, and society. The 2016 American Society of Anesthesiologists (ASA) guidelines states that enhanced recovery after surgery (ERAS) forms an integral part of Perioperative Surgical Home (PSH) and is now recommended to use a multimodal opioid-sparing approach for management of postoperative pain. As such, dexmedetomidine is now being used as part of ERAS protocols along with regional nerve blocks and other medications, to create a satisfactory postoperative outcome with reduced opioid consumption in the Post anesthesia care unit (PACU). RECENT FINDINGS: Dexmedetomidine, a selective alpha2 agonist, possesses analgesic effects and has a different mechanism of action when compared with opioids. When dexmedetomidine is initiated at the end of a procedure, it has a better hemodynamic stability and pain response than ropivacaine. Dexmedetomidine can be used as an adjuvant in epidurals with local anesthetic sparing effects. Its use during nerve blocks results in reduced postoperative pain. Also, local infiltration of IV dexmedetomidine is associated with earlier discharge from PACU. Perioperative use of dexmedetomidine has significantly improved postoperative outcomes when used as part of ERAS protocols. An in-depth review of the use of dexmedetomidine in ERAS protocols is presented for clinical anesthesiologists.

The Role of Exparel Plus Meloxicam for Postoperative Pain Management.

PURPOSE OF REVIEW: Acute postoperative pain reduction is a major target against the opioid crisis. While opioids have traditionally been the mainstay for postoperative analgesia, current practice has focused on a multimodal approach to pain control, including ultrasound-guided blocks with longer acting local anesthetic agents. RECENT FINDINGS: Non-steroidal anti-inflammatory drugs (NSAIDs), such as meloxicam, are an important class of medications utilized to manage pain in the perioperative period. An additional treatment used in perioperative or postoperative pain relief is Exparel, a bupivacaine (sodium channel blocker) liposomal injectable suspension with a 3-4-day duration of action. The long-acting mechanism and formulation of Exparel consistently has demonstrated decreased opioid use and pain scores in patients undergoing many different surgical procedures. A concern is that pH negatively alters the efficacy of bupivacaine, as in cases of inflamed tissue and acidic fluid pH. For this reason, a combination medication with both meloxicam and bupivacaine has been developed, which normalizes pH and has anti-inflammatory and anti-pain conduction properties. Clinical studies demonstrate that this combination agent can be extremely beneficial in treating postoperative pain. This manuscript summarizes the newest developments with regard to liposomal bupivacaine and the non-steroidal meloxicam, their roles in effective treatment of postoperative pain, contraindications, special considerations of using these medications, and future considerations. HTX-011 pairs up a new extended-release formulation of the local anesthetic bupivacaine with meloxicam, a well-established non-steroidal anti-inflammatory drug (NSAID).

Oxycodone's Unparalleled Addictive Potential: Is it Time for a Moratorium?

PURPOSE OF REVIEW: This study and literature review were carried out to investigate whether oxycodone is the most addictive prescription opioid. RECENT FINDINGS: This was a cross-sectional survey from a pain management practice in south-central Alaska and review of the literature involving 86 patients diagnosed with opioid dependence/opioid use disorder from 2013 to 2018. Patients were given a list of prescription opioids and asked to identify the one (1) most desirable to themselves, (2) most desirable among drug-using associates or community, and (3) they deemed most addictive. Patients with a history of heroin use were asked which, if any, served as their gateway drug to heroin. The literature was reviewed using a PubMed search for articles containing the words "oxycodone" and "abuse," "addiction," "dependence," "disorder," and "euphoria." Oxycodone was ranked most highly in all four questions (n = 50, 60.2%; n = 46, 75.4%; n = 38, 60.2%; n = 14, 77.8%, respectively) by a wide margin. Numerous observational studies performed over the past few decades have demonstrated the supreme "likability" and abuse and dependence liability/addictiveness of oxycodone, with more recent mechanistic studies illuminating biological underpinnings including markedly increased active transport across the blood-brain barrier, increased phasic dopaminergism in the ventral tegmental area, nucleus accumbens and related striatal reward centers, and possibly increased kappa opioid receptor-mediated withdrawal dysphoria. Oxycodone possesses pharmacologic qualities that render it disproportionately liable to abuse and addiction and the risks of any long-term prescription outweigh the benefits.

Treatment of Discogenic Low Back Pain: Current Treatment Strategies and Future Options-a Literature Review.

PURPOSE OF REVIEW: Many studies have demonstrated that discogenic low back pain is the most common type of chronic low back pain (CLBP), one of the major causes of disability, and has a major socioeconomic impact. Our aim is to review present therapeutic interventions for discogenic low back pain. RECENT FINDINGS: There are a multitude of treatments used in clinical practice to treat CLBP, but there is continued debate and lack of consensus among clinicians and the policy makers as to which modality is the best approach. Based on controlled evaluations, lumbar intervertebral discs have been shown to be the source of chronic back pain without disc herniation in 26 to 39% of patients. Treatment modalities include noninvasive treatments such as drug therapy, multiple physical modalities, and multidisciplinary biopsychosocial rehabilitation; interventional modalities such as intradiscal therapies and epidural injections; and regenerative modalities with disc injections of various solutions; and, finally, surgical approaches such as fusion and artificial disc replacement, all of which are accompanied by significant discussion, limited evidence, and lack of consensus. The results of this evaluation show that the evidence for drug therapy in chronic discogenic low back pain is limited; for multidisciplinary biopsychosocial rehabilitation, it is moderate; and for multiple physical and behavioral therapies, the evidence is limited. For intradiscal therapies, it is poor; for epidural injections, it is moderate; and for regenerative therapies, evidence levels of 3 to 4. The evidence for surgical fusions and disc replacement is similar, without superiority when compared with multidisciplinary biopsychosocial rehabilitation, well-designed physical therapy, or epidural injections.

Evolving Spinal Cord Stimulation Technologies and Clinical Implications in Chronic Pain Management.

PURPOSE OF REVIEW: Spinal cord stimulation (SCS), based on the gate theory of nociception, has been shown to be effective in the management of chronic pain conditions. While early-generation technology offered many patients improvement in their pain and symptoms, limitations including paresthesia, dependence on mapping, decreased chronological efficacy, and inadequate coverage left many patients with persistent pain and overt therapeutic failure. RECENT FINDINGS: New advances in neuromodulation technology circumvent many of these previous limitations and offer patients improved pain relief and quality of life. In this review, an update on recent technological developments in the field of SCS and peripheral neuromodulation is presented with discussion on differentiating characteristics which may help guide applicability to individual patient needs.

Enhanced Recovery for Breast Reconstruction Surgery.

PURPOSE OF REVIEW: Enhanced recovery pathways are a well-described perioperative healthcare program involving evidence-based interventions. Enhanced recovery is designed to standardize techniques such as drug selection and nerve blocks in order to speed recovery and reduce overall hospital costs. RECENT FINDINGS: A PubMed literature search was performed for articles that included the terms enhanced recovery and breast reconstruction surgery. The present investigation summarizes enhanced recovery literature related to breast surgery with a focus on breast reconstruction. Enhanced recovery considerations discussed in this review include patient education, preadmission optimization, perforator flap planning, anesthetic techniques, optimized fasting, venous thrombosis prophylaxis, early mobilization, and antimicrobial prophylaxis.

Essential Elements for Enhanced Recovery After Intra-Abdominal Surgery.

PURPOSE OF REVIEW: Enhanced recovery pathways provide a framework outlining the best perioperative care for intra-abdominal surgical procedures. To date, no evidence-based umbrella guidelines exist for all intra-abdominal surgeries. RECENT FINDINGS: PubMed and worldwide web searches were performed with the keywords: "ERAS," "Enhanced Recovery After Surgery," +/- "protocol." Manuscripts addressing intra-abdominal procedures were selected with the date range 2012-2017. The enhanced recovery philosophy is based in the realization that a traditional hospital works in silos that need to be broken to ensure a care protocol that follows and optimizes the journey the patient makes during the perioperative care. Enhanced recovery interventions can be categorized into preoperative, perioperative, and postoperative interventions. By design each intervention is planned and coordinated by a multidisciplinary ERAS team. The interventions discussed in this manuscript should be applied to patients on an individual basis depending on their needs. In this review, the most common elements of ERAS protocols in intra-abdominal procedures are reviewed, particularly those which provided the best outcomes and are generalized to all intra-abdominal procedures.

Essential Elements for Enhanced Recovery After Intra-abdominal Surgery.

PURPOSE OF REVIEW: Enhanced recovery pathways provide a framework outlining the best perioperative care for intra-abdominal surgical procedures. To date, no evidence-based umbrella guidelines exist for all intra-abdominal surgeries. RECENT FINDINGS: A PubMed and worldwide web search was performed with the keywords: "ERAS," "enhanced recovery after surgery", ± "protocol." Manuscripts addressing intra-abdominal procedures were selected, resulting in studies with the date range: 2012-2017. The basic philosophy behind enhanced recovery is the realization that a traditional hospital works in silos that need to be broken to ensure a care protocol that follows and optimizes the journey the patient makes during the perioperative care. Enhanced recovery interventions can be categorized into preoperative, perioperative, and postoperative interventions. By design, each intervention is planned and coordinated by a multidisciplinary ERAS team. Depending on the particular procedure and patient receiving the interventions, some of the interventions below may be more or less applicable. In this review, the most common elements of ERAS protocols in intra-abdominal procedures are reviewed, particularly those which provided the best outcomes and are most generalizable to all intra-abdominal procedures.

Emerging Novel Pharmacological Non-opioid Therapies in Headache Management: a Comprehensive Review.

PURPOSE OF REVIEW: Chronic headache is a significant worldwide problem despite advances in treatment options. Chronic headaches can have significant a detrimental impact on the activities of daily living. RECENT FINDINGS: Patients who do not obtain relief from chronic head and neck pain from conservative treatments are commonly being managed with interventional treatments. These interventional treatment options include botulinum toxin A, injections, local occipital nerve anesthetic and corticosteroid infiltration, occipital nerve subcutaneous stimulation and occipital nerve pulsed radiofrequency (PRF), sphenopalatine ganglion block, and radiofrequency techniques. Recently, evidence has emerged to support non-opioid-based drug and interventional approaches. Overall, more research is necessary to clarify the safety and efficacy of interventional treatments and to better understand the pathogenesis of chronic headache pain.

Regional Anesthesia in Patients on Anticoagulation Therapies-Evidence-Based Recommendations.

PURPOSE OF REVIEW: Anticoagulant use among patients is prevalent and increasing. It is important for anesthesiologists to be aware of patients on anticoagulants while performing regional anesthesia. RECENT FINDINGS: In recent years, the FDA has approved many new anticoagulants. With new drugs coming to the market, new side effect profiles should be considered when treating patients, especially when using regional anesthesia. Both ASRA and European agencies have laid out recommendations regarding anticoagulant use and neuraxial/regional techniques. Regarding newer anticoagulants, the guidelines for discontinuation prior to neuraxial injection are based on pharmacokinetics, including half-life duration for each drug. While each clinical scenario requires an individualized approach, general guidelines can serve as a starting point to help with anesthetic planning and potentially improve patient safety in this evolving field.

Metabolic and the Surgical Stress Response Considerations to Improve Postoperative Recovery.

PURPOSE OF REVIEW: Enhanced recovery pathways are a multimodal, multidisciplinary approach to patient care that aims to reduce the surgical stress response and maintain organ function resulting in faster recovery and improved outcomes. RECENT FINDINGS: A PubMed literature search was performed for articles that included the terms of metabolic surgical stress response considerations to improve postoperative recovery. The surgical stress response occurs due to direct and indirect injuries during surgery. Direct surgical injury can result from the dissection, retraction, resection, and/or manipulation of tissues, while indirect injury is secondary to events including hypotension, blood loss, and microvascular changes. Greater degrees of tissue injury will lead to higher levels of inflammatory mediator and cytokine release, which ultimately drives immunologic, metabolic, and hormonal processes in the body resulting in the stress response. These processes lead to altered glucose metabolism, protein catabolism, and hormonal dysregulation among other things, all which can impede recovery and increase morbidity. Fluid therapy has a direct effect on intravascular volume and cardiac output with a resultant effect on oxygen and nutrient delivery, so a balance must be maintained without excessively loading the patient with water and salt. All in all, attenuation of the surgical stress response and maintaining organ and thus whole-body homeostasis through enhanced recovery protocols can speed recovery and reduce complications. The present investigation summarizes the clinical application of enhanced recovery pathways, and we will highlight the key elements that characterize the metabolic surgical stress response and improved postoperative recovery.

Consensus Perioperative Management Best Practices for Patients on Transdermal Fentanyl Patches Undergoing Surgery.

PURPOSE OF REVIEW: The administration of a transdermal fentanyl patch can be complicated with different pharmacokinetics than other fentanyl preparations. RECENT FINDINGS: The medical condition and baseline opioid requirements must all be carefully considered when dosing a fentanyl patch. An advantage of the fentanyl patch is its ability to bypass the gastrointestinal tract and in many patients, provide effective analgesia with minimal side effects. Fentanyl patches must be carefully administered since morbidity and/or mortality can result from the following: Giving higher doses than a patient needs, combining the medication with potent sedatives, or heating a fentanyl patch. The use of a transdermal fentanyl patch for the treatment of acute postoperative pain is not recommended and any patient undergoing a surgical procedure should have the fentanyl patch removed preoperatively. The current manuscript discusses the history of fentanyl and the fentanyl patch, as well as perioperative considerations, contraindications, current clinical efficacy, and clinical adversities related to the transdermal fentanyl patch. Regarding the heating of a transdermal fentanyl patch, which significantly increases blood levels of fentanyl, it is of the utmost importance that the patch be removed prior to surgery.

Postoperative Management of Corneal Abrasions and Clinical Implications: a Comprehensive Review.

PURPOSE OF REVIEW: Total patient care is of extreme importance during the administration of anesthesia. Proper care of the eye is necessary during all anesthetic administrations, especially during the administration of general anesthesia or monitored anesthesia care. By paying attention to details, the likelihood of an occurrence of eye injuries is reduced. RECENT FINDINGS: Though perioperative eye injuries are rare during general anesthesia, they do account for 2-3% of claims against anesthesiologists. Ocular injuries may occur during general anesthesia even when tape has been utilized for eye closure. Corneal abrasions are the most common injuries that have been attributed to direct trauma to the eye, exposure keratopathy, or chemical injury. Using a hydrogel patch during general anesthesia is also associated with more frequent corneal injury than previously thought. Prevention of anesthesia-related eye injuries assumes a high priority since the eye is one of the major sense organs of the body. The eye can be damaged during anesthesia for both non-ophthalmic and ophthalmic surgeries.

Implementing enhanced recovery pathways to improve surgical outcomes.

An enhanced recovery pathway is a structured perioperative healthcare program that incorporates evidence-based interventions including protocols and guidelines with the aim of providing standardized care. Enhanced recovery pathways can help maintain operating room safety and efficiency, improve postoperative recovery and a variety of important patient outcomes, and reduce overall costs of patient care following major surgery. Postoperative complications are minimized, which, in part, are attributed to adjustments in fasting and postoperative nutrition, interventions aimed at improving early mobilization, and careful selection of pharmacological agents for anesthesia and analgesia. Major surgery can lead to a variety of physiological stressors including organ dysfunction, and hormonal and neurological disturbances. The current notion of fast-tracking (bypassing phase I recovery level of care) differs from enhanced recovery pathways as the principles of enhanced recovery pathways are often applied to inpatient and complex procedures and span the entire spectrum of patient care. Also, enhanced recovery pathways programs are being used for pediatric patients especially with the hope of minimizing opioid exposure and the quality of recovery. A PubMed literature search was performed for articles that included the terms enhanced recovery pathways to improve surgical outcomes. In this article, we summarized the clinical application of enhanced recovery pathways and highlighted the key elements that characterize implementing an enhanced recovery pathway in surgery.