Long-term Pain Management Research Articles

Patient Experiences of Long-term Pain and Pain Management Following Pelvic Exenteration for Locally Recurrent Rectal Cancer: A Qualitative Study.

Although pain may persist for patients who undergo pelvic exenteration for treatment of locally recurrent rectal cancer, studies exploring patient experience of postoperative pain and its management remains limited. This study aimed to explore patient experiences of postoperative chronic pain and management following pelvic exenteration. Qualitative cohort study of patients who have undergone pelvic exenteration for locally recurrent rectal cancer. The study was conducted through one-on-one semi-structured telephone interviews. Seventeen patients with locally recurrent rectal cancer who underwent pelvic exenteration between January 2018 and December 2020 were included. Semi-structured interviews explored participants' experiences of pain including its impact on life and management strategies at six and twelve months following exenteration. Interview transcripts were analyzed by two researchers using inductive thematic analysis. Participant experiences of pain following exenteration are reflected by three themes identified: 1) adapting to long-term consequences of pelvic exenteration including pain, 2) reluctance to take pain medications, 3) engaging multidisciplinary care team is essential to post-pelvic exenteration chronic pain management. Several participants reported ongoing intermittent pain following surgery that significantly affected various aspects of their lives. This prompted participants to adapt their lifestyle and explore alternative pain relief methods as some were hesitant to rely on analgesics. The small sample size from a single center whereby all patients underwent curative pelvic exenteration for lower recurrent rectal cancer with none undergoing the procedure for palliation limits the generalizability of the results of this study. While chronic pain following pelvic exenteration for locally recurrent rectal cancer interferes with patient's postoperative quality of life, analgesia use was influenced by pain habituation and fear of dependence on pain medications. Our findings emphasize the further need to investigate a multidisciplinary approach, including non-pharmacological methods, for optimization of pain outcomes following pelvic exenteration. See Video Abstract.

Enhanced Recovery After Surgery Protocols in One- or Two-Level Posterior Lumbar Fusion: Improving Postoperative Outcomes.

Background/Objectives: Enhanced recovery after surgery (ERAS) protocols optimize perioperative care and improve recovery. This study evaluated the effectiveness of ERAS in one- or two-level posterior lumbar fusion surgeries, focusing on perioperative medication use, pain management, and functional outcomes. Methods: Eighty-eight patients undergoing lumbar fusion surgery between March 2021 and February 2022 were allocated into pre-ERAS (n = 41) and post-ERAS (n = 47) groups. Outcomes included opioid and antiemetic consumption, pain scores (numerical rating scale (NRS)), functional recovery (Oswestry Disability Index (ODI) and EuroQol 5 Dimension (EQ-5D)), and complication rates. Pain was assessed daily for the first four postoperative days and at 6 months. Linear Mixed Effects Model analysis evaluated pain trajectories. Results: The post-ERAS group showed significantly lower opioid (p = 0.005) and antiemetic (p < 0.001) use. No significant differences were observed in NRS pain scores in the first 4 postoperative days. At 6 months, the post-ERAS group reported significantly lower leg pain (p = 0.002). The time:group interaction was not significant for back (p = 0.848) or leg (p = 0.503) pain. Functional outcomes at 6 months, particularly ODI and EQ-5D scores, showed significant improvement in the post-ERAS group. Complication rates were lower in the post-ERAS group (4.3% vs. 19.5%, p = 0.024), while hospital stay and fusion rates remained similar. Conclusions: The ERAS protocol significantly reduced opioid and antiemetic use, improved long-term pain management and functional recovery, and lowered complication rates in lumbar fusion patients. These findings support the implementation of ERAS protocols in spinal surgery, emphasizing their role in enhancing postoperative care.

Lidocaine-Loaded Iontophoresis-Driven Fiber-Based Microneedle Patch for Controllable and Long-Lasting Transdermal Local Analgesia

AbstractThe acute pain induced by clinical procedures, such as venipuncture, dental operations, and dermatological treatments, as well as postoperative pain, drives the advancement of anesthetic techniques aimed at alleviating discomfort. This situation underscores the ongoing significance of effective pain management strategies within the field of anesthesia. This paper presents an integrated iontophoresis (ITP)-driven fiber-based microneedle patch (IFMP) regulated by a smartphone for controllable, long-lasting lidocaine transdermal delivery. The IFMP integrates pure cotton fiber canvas-based dissolving microneedles (MNs) with ITP into a patch, with the MNs tips and gel layers significantly increasing the drug-loading capacity, achieving a one-step drug administration strategy of “dissolution, diffusion, and ITP.” Lidocaine is released via the microchannels of MNs by passive diffusion. Additionally, an electric current initiates active ITP for lidocaine delivery, creating synergy. User-requirement-based drug release by precisely modulating electrical signals in rat pain models is described herein. A smartphone application enables precise dosage control. It offers three different delivery modes: single-dose, pulse delivery, and sustained-release, ensuring rapid onset, and long-lasting pain relief. This versatility makes the system suitable for various pain conditions. The IFMP represents a promising system for patient-controlled local analgesia treatment, enabling active and long-term local self-controlled pain management in a safe and regulated manner. Graphical Abstract The iontophoresis-driven fiber-based microneedle patch combines fiber-based dissolving microneedles with iontophoresis, facilitating controlled lidocaine release through diffusion and electrical activation for enhanced effect. Precise modulation of electrical signals allows user-requirement-based drug release in rat pain models. A smart application supports precise dosing in single-dose, pulse, or sustained-release modes, ensuring efficient and prolonged pain management.

Self-Healing Hydrogel Resulting from the Noncovalent Interaction between Ropivacaine and Low-Molecular-Weight Gelator Sodium Deoxycholate Achieves Stable and Endurable Local Analgesia in Vivo.

Regional analgesia based on the local anesthetic ropivacaine plays a crucial role in postoperative pain management and recovery; however, the short duration of analgesia limits its clinical potential. Various drug delivery systems such as microparticles and lipid carriers have been used to prolong the analgesic effect, yet most of them are prone to abrupt release from the site of administration or have poor analgesic effects of less than 48 h, which fail to meet the needs of postoperative analgesia. In this study, a low-molecular-weight gelator sodium deoxycholate-based hydrogel loaded with ropivacaine (DC-ROP gel) was designed for long-acting analgesia. The noncovalent interaction between ropivacaine and sodium deoxycholate helps to improve the stability and sustained release performance of the gel. This internal drug-binding hydrogel also avoids experiencing the burst release effect commonly seen in polymer hydrogels previously reported for the slow release of local anesthetics. DC-ROP gel exhibited the dual advantages of self-healing after compression and long-term controlled release. In mice with inflammatory pain, DC-ROP gel achieved peripheral nerve block for more than 1 week after a single injection. Histological and blood biochemical analyses confirmed that the DC-ROP gel did not produce systemic toxicity, and cytotoxicity experiments demonstrated that the DC-ROP gel resulted in low irritation. These results suggest that DC-ROP gel provides a promising strategy for local anesthetics in long-term postoperative pain management, broadening the potential of bile salt-based low-molecular-weight hydrogels for drug delivery.

Implementation of back to living well, a community-based program for the tertiary prevention of low back pain: a study protocol

BackgroundThe current literature supports the effectiveness of exercise, education, and self-management interventions for the long-term management of persistent low back pain. However, there is significant uncertainty about the implementation of interventions related to barriers, facilitators, and patient’s preferences. This study will evaluate the Back to Living Well program implementation from a participant and organizational perspective. More specifically we address the following objectives: 1) identify program barriers and facilitators from participants’ perspectives, 2) identify factors related to program, personal and contextual factors that contribute to negative and positive outcomes, and outcome trajectories, 3) identify factors influencing participants’ selection of an in-person or e-health program, and 4) evaluate program specific barriers and facilitators from the organization and care delivery perspectives.MethodsThis study will utilize a mixed-method convergent design including a longitudinal cohort strand and a longitudinal qualitative interview strand. The RE-AIM framework will be used to assess program implementation. Participants (n = 90, 1:1: in person or virtual) who choose to register in the program as well as staff (n = 10 to 15) involved in the delivery of the program will be invited to participate. Participants will participate in a 12-week physical activity, education, and self-management program. Implementation outcomes will be measured at 3-, 6-, 12-months, and six months after the end of the follow-ups. Interview scripts and directed content analysis will be constructed based on the Theoretical Domains Framework and the Neuromatrix Model of Pain, Theoretical Domains Framework. Staff interviews will be constructed and analyzed using the Consolidated Framework for Implementation Research. Participants will also complete pain, disability, quality of life and psychological questionnaires, wear an activity tracker at all time points, and complete weekly pain and activity limitation questions using a mobile application.DiscussionThe study results will provide evidence to inform potential future implementation of the program. An effective, appropriately targeted, and well implemented exercise program for the long-term management (i.e., tertiary prevention) of LBP could minimize the burden of the condition on patients, the health care system and society.Trial registrationClinicalTrials.gov NCT05929846. This (Registration Date: July 3 2023) study has been approved by the Hamilton Integrated Research Ethics Board Project ID#15,354.

Pain management in trauma: the need for trauma-informed opioid prescribing guidelines

Background/objectivesSurgical populations and particularly injury survivors often present with complex trauma that elevates their risk for prolonged opioid use and misuse. Changes in opioid prescribing guidelines during the past several...

Endorsing a Biopsychosocial Perspective of Pain in Individuals With Chronic Pain: Development and Validation of a Scale.

Patients' beliefs about pain play an important role in their readiness to engage with chronic pain self-management. The central aim of this study was to validate a self-report instrument to assess a specific set of pain beliefs, patients' endorsement of a biopsychosocial model of chronic pain (PEB). Interdisciplinary experts in the field of pain were involved in creating an instrument, the PEB Scale, to operationalize patients' endorsement of a biopsychosocial model. A sample of 199 patients with chronic pain was recruited to evaluate the factorial structure (principal axis factoring), the internal consistency (Cronbach's alpha), the convergent and discriminant validity (correlational analyses), incremental validity (multiple, hierarchical regression analyses), and construct validity (differential population analysis) of the instrument. The factor analysis resulted in a unidimensional, 11-item instrument that explained 51.2% of the total variance. Cronbach's alpha (= 0.92) indicated high internal consistency of the created set of pain-related beliefs. Regression analyses demonstrated that PEB is a strong predictor of patients' engagement with pain self-management (P < 0.001), after controlling for demographic variables, anxiety, depression, and other pain-related beliefs. Our results show that the PEB Scale is a highly reliable self-report instrument, which has the potential to predict patients' readiness to adopt pain self-management. Future research should focus on re-validating the scale we developed to operationalize PEB. Moreover, the PEB Scale should be implemented in longitudinal study designs to investigate its ability to predict the transition from acute to chronic pain and patients' long-term pain management.

The Impact of Preoperative Adaptive Training on Postoperative Outcomes in Lumbar Spine Fusion Surgery for Lumbar Disc Herniation: A Retrospective Analysis.

Lumbar disc herniation, often treated with surgical decompression when conservative measures fail, presents challenges due to prolonged prone positioning in surgeries. This retrospective study evaluates the benefits of preoperative adaptive training to mitigate post-surgical physiological changes. A review of medical records from June 2021 to March 2023 identified 170 patients unresponsive to conservative treatments. Grouped into adaptive training and control groups based on historical data, the former had undergone exercises to prepare for surgery and postoperative changes. Vital signs and VAS scores were extracted from patient records to assess training impact. The adaptive training group demonstrated stabilized vital signs intraoperatively, with a notable improvement in surgical exposure compared to the control group. However, there were no significant differences in operative time or blood loss between the groups. Additionally, postoperative VAS scores showed no significant improvement in the adaptive training group at follow-up intervals of 14 days, 1 month, and 3 months post-operation, compared to the control group. Our study reveals that preoperative adaptive training stabilizes intraoperative blood pressure fluctuations in lumbar disc herniation surgeries. However, this stabilization does not significantly impact long-term postoperative pain management. This highlights the need for further research to explore comprehensive strategies that effectively combine preoperative training with postoperative care.

Use of Loco-regional Anesthesia in Austere Environments: A Review by and for Special Forces Medics.

Special Forces increasingly operate in austere environments, which are known to have limited medical support and prolonged evacuation times. On the battlefield, pain remains the first complaint of casualties and can impact direct autonomic stability, recovery, and the development of posttraumatic stress disorder. Although medical education has been improving, medical providers still encounter difficulties, such as lack of human and material resources, while trying to achieve pain management. This article summarizes a survey sent to 35 Special Operations medical providers and suggests possible strategies to address challenges to pain management on the battlefield. Potential solutions have been gathered through medical texts, medical/NATO documents, and medical expertise. Nerves blocks have been identified as valuable tools for pain management in the current battlefield environment, where prolonged evacuation and limited freedom of movement are the norm. The survey showed that, although the vast majority of providers had already received lectures on regional anesthesia, 83% were not trained in it, and 54% had never been made aware of multimodal analgesia. This lack of familiarity highlights knowledge and training gaps in nerve block techniques. Diffusion blocks are a very low-risk, useful, and safe pain management technique, which requires less skill sustainment and resources than more complex techniques. The use of epinephrine as adjunct can be useful for decreasing local anesthetic toxicity and increasing long-term pain management. The need for both education on and training in the use of nerve blocks has been identified by the Special Operations health provider community.

Patterns of prescription opioid use and opioid-related harms among adult patients with hematologic malignancies.

Treatment advances for hematologic malignancies (HM) have dramatically improved life expectancy, necessitating greater focus on long-term cancer pain management. This study explored real-world patterns of opioid use among patients with HM. This retrospective cohort study identified adults diagnosed with HM from January 1, 2013 through December 31, 2019 using the Truven MarketScan Commercial Claims and Encounters database. Across several HM types, we described rates of high-risk opioid use (based on Pharmacy Quality Alliance measures) and opioid-related harms, including incident opioid use disorder (OUD) diagnoses and opioid-related hospitalizations or emergency department (ED) visits. We used multivariable Cox regression to generate adjusted hazard ratios and 95% confidence intervals comparing the risk of opioid-related harms between patients with versus without high-risk opioid use. Our sample included 43,190 patients with HM. Median age at HM diagnosis was 54 years (interquartile range = 44-60). Most patients (61.9%) were diagnosed with lymphoma. Approximately half (49.2%) had an opioid dispensed in the follow-up period. Among all patients, 20.0% met criteria for high-risk opioid use, 0.9% had an OUD diagnosis, and 0.3% experienced an opioid-related hospitalization/ED visit in follow-up. High-risk opioid use increased the risk of an OUD diagnosis by 3.3 times (p < 0.0001) and an opioid-related hospitalization/ED visit 4.2 times (p < 0.0001). High-risk opioid use was prevalent among patients with HM and significantly increased the risk of opioid-related harms. However, rates of opioid-related harms were low. These findings highlight the importance of continually monitoring pain and opioid use throughout HM survivorship to provide safe, effective HM pain management.

THU453 Chronic Headaches As A Presentation For Monostotic Craniofacial Fibrous Dysplasia: A Case Study

Abstract Disclosure: B. Dyer: None. R.K. Bhattacharya: None. Background: Monostotic craniofacial fibrous dysplasia (CFFD) is often asymptomatic and is found incidentally on imaging. Previous reports described cases in which CFFD diagnosis was preceded by chronic headaches, but there remains a lack of clinical association between these diagnoses. Clinical Case: Patient is a 22-year-old female with a long history of chronic headaches who presented to the emergency department two days after a motor vehicle accident with complaints of headache, blurred vision, nausea, and dizziness. CT revealed an incidental sclerotic mass in the left frontal region measuring 7.9x7.3x3.7cm extending inferiorly into the left ethmoid sinus. At her primary care follow-up, she reported a pounding, left-sided headache in addition to balance issues, dizziness, nausea, and blurry vision. Workup was significant for vitamin D level of 11.2ng/mL (n = 30-100ng/mL), alkaline phosphate of 106U/L (n = 35-104U/L), and calcium of 9.1mg/dL (n = 8.6-10.3mg/dL). MRI was significant for a heterogeneous, hypointense expansile calvarial lesion within the left frontal and left sphenoid bones. The patient was diagnosed with CFFD based on radiologic findings. The patient was advised against surgical intervention due to her disease’s large, invasive nature. The patient was seen by neurology for recurrent headaches and was subsequently started on topiramate with partial symptom relief. Endocrinologist management included confirmation of monostotic CFFD by bone scan. Biopsy was deferred due to the low likelihood of malignant transformation, and bisphosphonate treatment was initiated. She was subsequently started on 5000 IU per day of vitamin D to normalize the vitamin D level before the initiation of bisphosphonate treatment for her pain. She received 5mg intravenous infusion of zoledronic treatment. At follow-up, the patient states she had significant improvement in all symptoms. Conclusion: Pain from FD can be debilitating and often increases in severity as the patient ages, though pain is not strongly correlated to presentation or disease burden. The mechanism by which CFFD produces pain is not fully elucidated. The unique innervation of bone and the creation of new sensory nerve fibers during inflammatory states may contribute. Additionally, excess IL-6 during inflammatory states may also play a role in pain production due to lesion expansion from osteoclast activation, cystic formation within the lesion, and hormonal reactivity of the lesion. Bisphosphonates are believed to inhibit IL-6 production, reducing osteoclastic activity and leading to symptomatic pain relief. In the case presented, the patient’s chronic headaches improved significantly following combination therapy with migraine abortive medication and bisphosphonate therapy. Early recognition and multidisciplinary treatment are key in the long-term management of CFFD pain. Presentation: Thursday, June 15, 2023

Prescription opioid utilization patterns, and associated outcomes, among privately insured patients prescribed opioids to manage pain associated with osteoarthritis

Objective To describe utilization patterns, negative clinical outcomes and economic burden of patients diagnosed with osteoarthritis (OA) of the hip and/or knee who received a prescription for tramadol or non-tramadol opioids vs. non-opioid drugs. Methods Optum Healthcare Solutions, Inc. commercial claims data were used (1/2012--3/2017). Adults with ≥2 diagnoses of OA of the hip and/or knee, and ≥30 days supply of pain medications were identified during the three-year period from the date of first prescription (index date) after the first OA diagnosis. Drug utilization statistics in the follow-up period were summarized by initial treatment (i.e. tramadol, non-tramadol opioids, non-opioid drugs). Opioid initiators were matched to those initiated on non-opioid treatments using a propensity score model accounting for baseline characteristics. Matched pairs analysis compared outcomes for these cohorts. Results Of 62,715 total patients, 15,270 (24.3%) initiated treatment with opioids, including 3,513 (5.6%) on tramadol and 11,757 (18.7%) on non-tramadol opioids. Opioid initiators had more comorbidities, higher baseline healthcare costs, and were more likely to have OA of the hip. Among non-opioid initiators, 27.5% switched to tramadol and 63% switched to non-tramadol opioids. Among tramadol initiators, 71% switched to non-tramadol opioids. Patients initiated on opioids had 20.4% (p < .01) higher all-cause healthcare costs and higher percentages experiencing multiple negative clinical outcomes (all p < .01) compared to matched controls. Conclusions Most patients with OA of the hip and/or knee either initiate on or switch to opioids for long-term management of OA-related pain despite known risks. This highlights the need for new treatments that delay or prevent use of opioids.

Comparative Study, Walant vs Axillary Block in Carpal Tunnel Surgery

Objectives: Wide awake local anesthesia no tourniquet (WALANT) is a local anesthetic technique that, in theory, reduces costs and surgical waiting periods. The purpose of this study was to compare axillary block (AXB) with WALANT in terms of pain scores, duration of hospital stay, and hand function in patients who underwent CTR surgery. Methods: Between January 2015 and February 2020, a retrospective analysis was conducted on the outcomes of 410 patients who underwent CTS surgery. The Walant technique was utilized on 210 patients, while the AXB technique was utilized on 200 patients. These two groups were compared regarding operative time, hospital stay, VAS score at specific intervals before and after surgery, and hand function recovery. Results: The mean operation time is 11 min (8-18) for WALANT group and 13 min (7-43) for AXB group. Average time of length of hospitalization is 4.2 hours (2-6) for WALANT and 14.2 hours (9-26) for AXB groups. The VAS scores of WALANT group is significiantly less than AXB group (p&lt;0.05). The percentages of being able to use their hands compared to their nonoperative hands were evaluated. These rates were higher in the WALANT group than in the AXB group (65-75% vs. 45-60%). Conclusion: Increased patient comfort was associated with the WALANT technique. It is superior to AXB in terms of patient satisfaction, postoperative long-term pain management, and hand function recovery. Assuming all safety recommendations are adhered to, WALANT is an alternative to tourniquets in CTS surgeries for obtaining a bloodless surgical field without the discomfort of tourniquet application.

ID: 220244 A Single-Center Review of 10 kHz Spinal Cord Stimulator Treatment Outcomes for Chronic Pain

Chronic pain is a prevalent worldwide condition, leading to diminished quality of life and workforce productivity (1). First-line therapies from conservative medical management to surgery have demonstrated varying degrees of efficacy, though sustained long-term pain management remains a challenge (2). Low-frequency spinal cord stimulation (LF-SCS) has been used in a subset of patients as a cost-effective and minimally invasive therapy to achieve pain control and improved quality of life (3). However, its limitations include diminished long-term relief, uncomfortable paresthesia, and incomplete pain control (4). The pivotal SENZA-RCT in 2015 demonstrated the efficacy of 10 kHz (high-frequency) spinal cord stimulation (HF-SCS) as a superior alternative to LF-SCS (5). The study, although promising, was industry-sponsored and potentially vulnerable to bias including withholding of negative data or exaggeration of beneficial effects. The goal of this single-center retrospective review was to compare outcomes of real-world/pragmatic HF-SCS pain outcomes to previously published studies without the potential bias of industry funding.

The effects of ego integrity and readiness for death on the preferences of care near the end-of-life of hospitalized older adults in long-term care hospitals: A cross-sectional correlation study

Purpose: This study aimed to investigate ego integrity, readiness for death, and preferences of care near the end-of-life among hospitalized older adults in long-term care hospitals and identify factors that influence end-of-life care preference. Methods: A total of 181 older adults in long-term care hospitals participated in the study, and data collection was conducted from July 20th, 2020 to September 20th, 2020. Descriptive statistics, t-test, ANOVA, Pearson’s correlations, and multiple regression were used for data analysis. Results: The older adults in hospitalized in long-term care hospitals preferred pain management even at the risk of hastened death, while the least preferred option was autonomous decision-making, including artificially prolonging human life. Regarding end-of-life care preferences, ego-integrity (β=-.18, p=.004) and death-readiness (β=-.18, p=.005) were factors that only influenced the spiritual domain and in the pain domain, it was confirmed that only the ego-integrity (β=-.16, p=.013) was affected. Conclusion: Although ego integrity and readiness for death did not affect all areas of end-of-life care preference among older adults in long-term care hospitals, they represent significant variables denoting positive acceptance of death and life satisfaction. As such, it is necessary to provide various opportunities for these factors to be considered in the overall process of aging. Furthermore, it has been confirmed that other variables can influence each subdomain of end-of-life care preference. Therefore, nurses should support hospitalized older adults in receiving end-of-life care according to their preferred domains.

Comparing inpatient management of chronic pelvic pain flares before and after the COVID-19 pandemic.

Patients with chronic pelvic pain (CPP) may experience pain exacerbations requiring hospital admissions. Due to the effects of backlogged elective surgeries and outpatient gynaecology appointments resulting from the COVID-19 pandemic, we hypothesised that there would be an increased number of women admitted with CPP flares. We conducted a retrospective review of all acute gynaecology admissions at the Royal Infirmary of Edinburgh from July to December 2018 (pre-COVID) and 2021 (post-COVID lockdown). We collected information on the proportion of emergency admissions due to CPP, inpatient investigations and subsequent management. Average total indicative hospital inpatient costs for women with CPP were calculated using NHS National Cost Collection data guidance. There was no significant difference in the number of emergency admissions due to pelvic pain before (153/507) and after (160/461) the COVID-19 pandemic. As high as 33 and 31% had a background history of CPP, respectively. Across both timepoints, investigations in women with CPP had low diagnostic yield: <25% had abnormal imaging findings and 0% had positive vaginal swab cultures. Women with CPP received significantly more inpatient morphine, pain team reviews and were more likely to be discharged with strong opioids. Total yearly inpatient costs were £170,104 and £179,156 in 2018 and 2021, respectively. Overall, emergency admission rates for managing CPP flares was similar before and after the COVID-19 pandemic. Inpatient resource use for women with CPP remains high, investigations have low diagnostic yield and frequent instigation of opiates on discharge may risk dependence. Improved community care of CPP is needed to reduce emergency gynaecology resource utilisation. Existing treatments for chronic pelvic pain (CPP) and endometriosis focus on surgery or hormone medication, but these are often ineffective or associated with unacceptable side-effects. As a result, women continue to experience chronic pain and often have 'flares' of worsening pain that may lead to hospital admission. The COVID-19 pandemic resulted in backlogged gynaecology clinics and surgeries. The aim of this study was to compare the management of emergency pelvic pain admissions for women with CPP before and after COVID-19. We also aimed to better understand their in-hospital management and estimate their hospital length of stay costs. We did not find an increase in CPP patients admitted for pelvic pain flares after the COVID-19 lockdown. Women with CPP often undergo multiple hospital tests and are often prescribed with strong pain medications which can cause long-term problems. Efforts are needed to improve long-term pain management for women with CPP.

Epidural Injection Method for Long-Term Pain Management in Rats with Spinal Stenosis.

Epidural injection is one of the most common nonsurgical treatment options for long-term pain relief in lumbar spinal stenosis. Recently, various nerve block injections have been used for pain management. Among them, nerve block through epidural injection is a safe and effective method for the clinical treatment of low back or lower extremity pain. Although the epidural injection method has a long history, the effectiveness of long-term epidural injections in disc diseases has not been scientifically proven. In particular, to verify the safety and efficacy of drugs in preclinical studies, the route and method of drug administration in terms of the clinical application method and duration of use must be established. However, there is no standardized method for long-term epidural injections in a rat model of stenosis to identify the precise efficacy and safety of epidural injections. Therefore, standardizing the epidural injection method is very important for evaluating the efficacy and safety of drugs used for back or lower extremity pain. We describe the first standardized long-term epidural injection method for evaluating the efficacy and safety of drugs according to their route of administration in rats with lumbar spinal stenosis.

Microneedling in the relief of pain in arthritis: a brief review

AbstractPain is the main symptom of arthritis. Microneedling (MN) is a new method of transdermal drug delivery that relieves pain in arthritis according to the mechanisms of pain in arthritis. This paper provides a review of the mechanisms of pain in arthritis and the use of different types of MNs in pain relief in arthritis. The mechanism of pain in arthritis is primarily a joint tissue lesion that causes the release of inflammatory factors by proinflammatory cells, resulting in pain. MNs can carry various drugs to reduce inflammatory factors, cartilage destruction, and thus the symptom of pain. MNs can be classified into 5 types, which are solid MNs, hollow MNs, coated MNs, dissolving MNs, and swelling MNs. Among them, dissolving MNs and swelling MNs have better prospects for application in the long-term management of pain in arthritis due to the biosafety of their materials and the convenience brought by the sustained-release design.

The Choice of Spinal Cord Stimulation Versus Targeted Drug Delivery in the Management of Chronic Pain: Validation of an Outcomes Predictive Formula

ObjectiveIn 2020, Mekhail et al published a formula that predicted the likelihood of a successful outcome for those who undergo spinal cord stimulation (SCS) for long-term pain management, based on retrospectively collected clinical and demographic data from one major medical center. The aim of this study is to validate such a predictive formula, prospectively, in a cohort of patients from multiple medical practices that are more representative of real-life clinical practice. Materials and MethodsFor the study, 939 patients who underwent successful SCS or targeted drug delivery (TDD) trials at multiple independent medical centers in the USA were enrolled into the Medtronic product surveillance registry data base before they underwent SCS or TDD device implantation, from 2018 to 2020. The registry data were collected prospectively but not specifically for this study. The data examined included demographic information, pain diagnosis, pain scores (visual analog scale [VAS]), Oswestry Disability Index scores, and quality-of-life scores at baseline and six months after implant. Because our goal is to validate the previously published predictive formula, in addition to the outcomes data previously mentioned, we collected the variables necessary for such a task: sex, age, depression, the presence of neuropathic pain, spine-related pain diagnosis, and persistent spinal pain syndrome “post laminectomy syndrome.” Spine-related pain diagnosis included subjects with chronic spine pain who never had back surgery and whose pain was not radicular nor neuropathic. ResultsOf 619 patients with SCS, 138 (22%) achieved ≥ 50% reductions of the baseline VAS at six months. The logistic model predicts SCS success with an area under the receiver operating characteristic curve (AUC) of 80% in the current validation data set. Of 320 patients with TDD, 147 (46%) achieved ≥ 50% reduction of the baseline VAS at six months. The logistic model predicts TDD success with an AUC of 78% in the current validation data set. ConclusionThe study provides real life validation of the previously published predictive formula(4).

Managing Long COVID Syndrome

The textbook titled Managing Long COVID Syndrome is an educational and tractable reference for not only medical providers, but also the general public. This is one of the first texts dedicated to long COVID syndrome and is an important publication for readers in search of a deeper understanding of long COVID syndrome, which has stricken so many throughout the world.Impressively, this 52-chapter, 310-page book was written by a single author, Dr. Thanthullu Vasu, who practices management of long-term conditions and pain management in the United Kingdom. Much merit should be given to any single-author textbook, such as Managing Long COVID Syndrome. The advantages include a decrease in repetition of material, a uniform cadence of information that is meted out, and maintenance of stylistic conformity.Due to the relative novelty of long COVID syndrome, the author humbly asks for readers to send comments in order to improve future iterations of the text. This will undoubtedly be warranted as deeper understanding of COVID and the repercussions of this disease will continue to evolve.Aesthetically, the cover and pages are of high-quality material that will last many years, but not as costly and heavy as a hardback text. The size of the book allows it to easily fit into most any bag or perhaps some pockets. Of note, there are no graphics, figures, or tables, which could be considered with future iterations to enhance understanding of mechanisms and when comparing research.This book was written with a wide demographic audience in mind, making it an applicable resource for nearly everyone who wishes to learn more about the coronavirus and the management of long COVID syndrome. The text is easy to read with understandable language applicable to not only healthcare providers, but also the non–medically trained public. Of particular interest to those with medical backgrounds is chapter 50, which provides a concise and digestible overview of groundbreaking research on long COVID syndrome.Each chapter is short and concise without overwhelming focus on medical literature, but instead overarching themes of scientific knowledge and beliefs concerning long COVID syndrome. The “Key Point” bulleted boxes at the end of each chapter are a nice feature that succinctly summarizes main points and allow readers to focus their understanding. Last, the table of contents and index are superbly organized and allow for ease in finding specific topics of interest.Notably, the book dedicates a chapter to describing the coronavirus and the known variants beginning with the alpha lineage. As with any book dedicated to an ever-changing virus, the text may already be outdated as the last coronavirus variant described is the B.1.1.529 variant. Undoubtedly, future iterations of this worthy text will include detailed knowledge of newer coronavirus variants and the effect of these on the human body. Similarly, the chapter on new medications will need to be revised with future iterations to update findings on the ineffectiveness of ivermectin and other new findings since publication. Last, this chapter on medications and investigational therapies will need to be read with the knowledge that these practices are being studied or are approved in the United Kingdom, and perhaps not generalizable to other countries.In that vein, this is a United Kingdom–centric book in terms of agencies and research geared toward long COVID syndrome. For example, one chapter is dedicated to long COVID support groups and focuses on a campaign titled LongCOVIDSOS. This campaign predominately works with United Kingdom–based government departments and ministers, including the National Health Service, National Institute for Health and Care Research, Office for National Statistics, and National Institute for Health and Care Excellence, and international bodies such as the World Health Organization. Other support groups mentioned are from Wales and Scotland. As far as guidelines aimed at long COVID syndrome, the book emphasizes guidelines from the National Health Service and National Institute for Health and Care Excellence concerning the diagnosis and management of long COVID syndrome. There is one chapter dedicated to the American guidelines for long COVID syndrome.Some specific examples of care concerning long COVID syndrome include management of fatigue, shortness of breath, sleep disturbances, mental health and mood issues, and nutrition. Additionally, this book spends several chapters on pain management issues associated with long COVID syndrome. This is not surprising as the text is written by a pain specialist who has cared for patients with the unfortunate aftermath of this pandemic disease.Overall, the novel textbook is a timely publication that meets a heretofore unmet need in the management of long COVID syndrome. Increased dissemination of educational material concerning this disease is warranted as it will likely affect the world for many years.