The Relationship Between Pain-Related Psychological Factors and Postoperative Opioid Use After Ambulatory Hand Surgery

Mindfulness-Based Interventions for Perioperative Pain Management and Opioid Risk Reduction Following Surgery: A Stepped Care Approach

Surgical procedures often improve health and function but can sometimes also result in iatrogenic effects, including chronic pain and opioid misuse. Due to the known risks of opioids and the physical, emotional, and financial suffering that often accompanies chronic pain, there has been a call for greater use of complementary non-pharmacological treatments like mindfulness-based interventions. Mindfulness can be broadly described as an attentional state involving moment-by-moment meta-awareness of thoughts, emotions, and body sensations. An expanding number of randomized clinical trials have found strong evidence for the value of mindfulness techniques in alleviating clinical symptomology relevant to surgical contexts. The purpose of this review is to examine the empirical evidence for the perioperative use of mindfulness interventions. We present a mindfulness-based stepped care approach that first involves brief mindfulness to treat preoperative pain and anxiety and prevent development of postoperative chronic pain or opioid misuse. More extensive mindfulness-based interventions are then provided to patients who continue to experience high pain levels or prolonged opioid use after surgery. Finally, we review psychophysiological mechanisms of action that may be integral to the analgesic and opioid sparing effects of mindfulness.

Predictors of adequate pain control after outpatient hand and upper extremity surgery

PURPOSE

The opioid epidemic has changed practice, though there remains a paucity of data regarding prescribing habits and pain control following outpatient hand surgery. We sought to evaluate patient-related predictors of adequate postoperative pain control.

METHODS

A retrospective review was performed of a single-center prospectively collected database of elective outpatient surgery on the elbow, forearm, wrist, and/or hand. Patients were asked to complete preoperative and postoperative questionnaires to capture their perception of anticipated pain levels, expected prescription quantity/duration, additional medications used, and overall pain satisfaction. Patient demographics collected included, sex, age, race, tobacco use, and recreational drug use. Further, the questionnaire included the Brief Resilience Score (BRS), EuroQol 5-dimension health-related QOL measure (EQ-5D), and an assessment of patient-reported limitations secondary to their pain.

RESULTS

Ninety-six patients completed the pre/postoperative questionnaires and were eligible for analysis. Of these patients, 80% reported adequate pain control. The sex, age, and race of those who reported adequate pain control and inadequate control were not significantly different. BRS scores were not found to be significantly different between groups, although EQ-5D QOL scores were significantly lower in the inadequately controlled group. Tobacco use was more prevalent in the inadequately controlled group. Marijuana use and the presence of a chronic pain diagnosis were not significantly different between groups.

CONCLUSION

Preoperative self-reported quality of life measures and tobacco use appear to have significant effects on postoperative opioid use, suggesting further areas of optimization which may ensure patients are safe and minimize the number of opioid pills required.

LEVEL OF EVIDENCE IV

Mind-Body Therapies in the Management of Otolaryngologic Disease: A State-of-the-Art Review of Randomized Controlled Trials

OBJECTIVE

To review and assess the peer-reviewed literature on the utility of mind-body therapy (MBT) as an adjunct treatment in the management of otolaryngologic disease.

DATA SOURCES

PubMed, Embase, and Cochrane.

REVIEW METHODS

Randomized control trials (RCTs) of MBTs in the management of otolaryngologic disease from 2002 to 2022 were identified and included according to predefined criteria. Interventions requiring expensive equipment were excluded because the goal of MBT is to be cost-conscious. All studies were subjected to a two-stage blinded screening, extraction, and appraisal process. The outcomes of the intervention and control groups were compared.

CONCLUSION

RCTs of MBTs, including breathing exercises (4), aromatherapy (2), biofeedback (2), meditation, (2), and yoga (2), have been studied in several otolaryngologic conditions, including septoplasty/rhinoplasty (3), head and neck cancer (2), facial palsy (2), and tinnitus (2). Most studies were of moderate risk of bias on appraisal, and each MBT studied was found to significantly reduce subjective and objective distress associated with the otolaryngologic condition in question.

IMPLICATIONS FOR PRACTICE

Despite a paucity of strong evidence supporting the universal use of MBTs, our review suggests that MBTs are cost-effective and easily deployable complementary tools in the management of otolaryngologic disease. Future large, methodologically rigorous RCTs are needed to address the limitations of the included studies, such as improper blinding and inappropriate statistical analysis. As MBTs are studied further, a case for their current use can be made because of their low cost and minimal risk to patients.

Association of Multimodal Pain Control with Patient-Reported Outcomes in Children Undergoing Surgery

INTRODUCTION

Our aim was to describe practices in multimodal pain management at US children's hospitals and evaluate the association between non-opioid pain management strategies and pediatric patient-reported outcomes (PROs).

METHODS

Data were collected as part of the 18-hospital ENhanced Recovery In CHildren Undergoing Surgery (ENRICH-US) clinical trial. Non-opioid pain management strategies included use of preoperative and postoperative non-opioid analgesics, regional anesthetic blocks, and a biobehavioral intervention. PROs included perioperative nervousness, pain-related functional disability, health-related quality of life (HRQoL). Associations were analyzed using multinomial logistic regression models.

RESULTS

Among 186 patients, 62 (33%) received preoperative analgesics, 186 (100%) postoperative analgesics, 81 (44%) regional anesthetic block, and 135 (73%) used a biobehavioral intervention. Patients were less likely to report worsened as compared to stable nervousness following regional anesthetic block (relative risk ratio [RRR]:0.31, 95% confidence interval [CI]:0.11-0.85), use of a biobehavioral technique (RRR:0.26, 95% CI:0.10-0.70), and both in combination (RRR:0.08, 95% CI:0.02-0.34). There were no associations of non-opioid pain control modalities with pain-related functional disability or HRQoL.

CONCLUSION

Use of postoperative non-opioid analgesics have been largely adopted, while preoperative non-opioid analgesics and regional anesthetic blocks are used less frequently. Regional anesthetic blocks and biobehavioral interventions may mitigate postoperative nervousness in children.

LEVEL OF EVIDENCE

III.

Publication Trends in Research on Mental Health and Mental Illness in Orthopaedic Surgery: A Systematic Review

BACKGROUND

Mental health conditions affect tens of millions of Americans. In recent years, particularly with the advent of the coronavirus disease 2019 pandemic, there has been a burst of interest in mental health and mental illness among orthopaedic surgical patients. The mental health of orthopaedic surgeons themselves has also come into focus, with high reported rates of burnout and depression. The aim of this article was to evaluate trends in publication on mental health and mental illness in orthopaedic surgery.

METHODS

Web of Science and PubMed were queried to conduct a systematic review. Studies that discussed orthopaedic surgery and mental illnesses or mental health topics over 2001 to 2022 were included. Publications were analyzed by article-, author-, and topic-level characteristics.

RESULTS

A total of 416 studies were analyzed after application of inclusion and exclusion criteria. Publication volume increased dramatically, demonstrating quadratic growth over 2001 to 2022 (p < 0.001). Eighty-eight percent of studies focused on patients and 10% on surgeons, with studies about patients more likely to focus on mental illness and those about surgeons more likely to focus on mental health (p < 0.001). Twenty percent of publications had a female senior author, and 5 authors collectively accounted for 10% of all publications. Eight journals published more than 10 publications, accounting for 35% of all publications. The most productive subspecialties were arthroplasty (135, 30%), general orthopaedics (87, 21%), and spine (69, 17%). Mental illnesses that were least represented included schizophrenia, bipolar disorder, eating disorders, attention-deficit/hyperactivity disorder, and personality disorders (1% or less of total publications each).

CONCLUSION

This analysis showed a dramatically increasing trend in publications on mental health and mental illness in orthopaedic surgery. A high concentration of publications came from a subset of journals and senior authors, and women were overrepresented as senior authors relative to their representation in the field. The results of this analysis identified gaps in the literature, including underrepresented subspecialties, understudied mental illnesses, and study of orthopaedic surgeon mental health, and thus highlighted areas for future investigation.

LEVEL OF EVIDENCE

Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

Preoperative Patient-Reported Data Indicate the Risk of Prolonged Opioid Use After Hand and Upper Extremity Surgeries

PURPOSE

Opioids play an important role in pain management after surgery but also increase the risk of prolonged opioid use in patients. The identification of patients who are more likely to use opioids after intended short-term treatment is critical for employing alternative management approaches or targeted interventions for the prevention of opioid-related problems. We used patient-reported data (PRD) and electronic health record information to identify factors predictive of prolonged opioid use after surgery.

METHODS

We used our institutional registry containing data on all patients who underwent elective upper extremity surgeries. We evaluated factors associated with prolonged opioid use in the cohort from the year 2018 to 2019. We then validated our results using the 2020 cohort. The predictive variables included preoperative PRD and electronic health record data. Opioid use was determined based on patient reports and/or filled opioid prescriptions 3 months after surgery. We conducted bivariate regression, followed by multivariable regression analyses, and model validation using area under the receiver operating curve.

RESULTS

We included 2,114 patients. In our final model on the 2018-2019 electronic health records and PRD data (n = 1,589), including numerous patient-reported outcome questionnaire scores, patients who were underweight and had undergone trauma-related surgery had higher odds of being on opioids at 3 months. Additionally, each 5-unit decrease in the preoperative Patient-Reported Outcomes Measurement Information System Global Physical Health score was associated with a 30% increased odds of being on opioids at 3 months. The area under the receiver operating curve of our model was 70.4%. On validation using data from the 2020 cohort, the area under the receiver operating curve was 60.3%. The Hosmer-Lemeshow test indicated a good fit.

CONCLUSIONS

We found that preoperative questionnaire scores were associated with prolonged postoperative opioid use, independent of other variables. Furthermore, PRD may provide unique patient-level insights, alongside other factors, to improve our understanding of postsurgical pain management.

TYPE OF STUDY/LEVEL OF EVIDENCE

Prognostic II.

Preoperative Opioid Use in Patients Undergoing Common Hand Surgeries

BACKGROUND

The objectives of this study were to determine the baseline patient characteristics associated with preoperative opioid use and to establish whether preoperative opioid use is associated with baseline patient-reported outcome measures in patients undergoing common hand surgeries.

METHODS

Patients undergoing common hand surgeries from 2015 to 2018 were retrospectively reviewed from a prospective orthopedic registry at a single academic institution. Medical records were reviewed to determine whether patients were opioid users versus nonusers. On enrollment in the registry, patients completed 6 Patient-Reported Outcomes Measurement Information System (PROMIS) domains (Physical Function, Pain Interference, Fatigue, Social Satisfaction, Anxiety, and Depression), the Brief Michigan Hand Questionnaire (BMHQ), a surgical expectations questionnaire, and Numeric Pain Scale (NPS). Statistical analysis included multivariable regression to determine whether preoperative opioid use was associated with patient characteristics and preoperative scores on patient-reported outcome measures.

RESULTS

After controlling for covariates, an analysis of 353 patients (opioid users, n = 122; nonusers, n = 231) showed that preoperative opioid use was associated with higher American Society of Anesthesiologists class (odds ratio [OR], 2.88), current smoking (OR, 1.91), and lower body mass index (OR, 0.95). Preoperative opioid use was also associated with significantly worse baseline PROMIS scores across 6 domains, lower BMHQ scores, and NPS hand scores.

CONCLUSIONS

Preoperative opioid use is common in hand surgery patients with a rate of 35%. Preoperative opioid use is associated with multiple baseline patient characteristics and is predictive of worse baseline scores on patient-reported outcome measures. Future studies should determine whether such associations persist in the postoperative setting between opioid users and nonusers.

The Effect of Standardized Perioperative Patient Education on Opioid Use After Minor Soft Tissue Procedures Distal to the Wrist

PURPOSE

Several studies have explored opioid consumption and opioid prescriber education for upper extremity procedures; however, less literature has focused on patient-centered interventions and their impact on opioid consumption after surgery. The purpose of this study was to create a standardized perioperative patient education program regarding postoperative pain management after hand surgery and to determine if it could reduce opioid use after hand surgery.

METHODS

Patients scheduled to undergo elective outpatient hand surgery comprising minor soft tissue procedures at and distal to the wrist were randomized to receive pain management education or standard care. Before the surgery, all patients viewed a webinar with instructions for participation, whereas the education group received an additional 10 minutes of education on postoperative pain management and a pain management reference card for review after the surgery. All patients completed a postoperative daily log documenting the number of opioids consumed, other pain management modalities used, and pain scores. The primary outcome of the number of opioid pills consumed by the patients was compared between the groups. We constructed a linear regression model to determine the risk factors for postoperative opioid use after surgery.

RESULTS

One hundred seventy-four patients completed the study (n = 90 education group; n = 84 standard care group). Patients in the education group took significantly fewer opioid pills (median = 0, range 0-13) than those in the standard care group (median = 0.5, range 0-40). A linear regression model showed that average week-1 pain (B = 0.93; 95% confidence interval, 0.56-1.3) and the number of pills prescribed (B = 0.12; 95% confidence interval, 0.017-0.22) were predictive of greater opioid use.

CONCLUSIONS

Perioperative patient education significantly reduced postoperative opioid use following a minor soft tissue hand surgery, with greater than 70% of the patients taking no opioids.

TYPE OF STUDY/LEVEL OF EVIDENCE

Prognostic II.

Impact of Patient-Reported Allergies on Early Postoperative Opioid Use and Outcomes Following Ambulatory Hand Surgery

Background: Patient-reported allergies (PRAs) are associated with suboptimal orthopaedic surgery outcomes and may serve as a proxy for mental health. While mental health disorders are known risk factors for increased opioid use, less is known about how PRAs impact opioid use after orthopedic surgery. The purpose of this study was to investigate the association between PRAs and postoperative opioid use, pain, and satisfaction following hand surgery. Methods: Patients who underwent ambulatory hand surgery at a single institution from May 2017 to March 2019 were retrospectively reviewed. Various scores, including the Mindfulness Attention Awareness Scale (MAAS), were collected preoperatively. Postoperatively, patients completed a 2-week pain diary, satisfaction, and visual analog scale (VAS) pain scores. Opioid consumption was converted to oral morphine equivalents (OMEs) using standard conversions. Results: A total of 137 patients were divided into 2 groups based on presence (≥1) (n = 73) or absence (0) (n = 64) of PRAs. At baseline, the ≥ 1 PRA group had significantly higher female composition (P < .001) and pain (P < .001) and lower PROMIS mental health scores (P = .044). Postoperative OME consumption averaged 42.5 (range 0-416) in the entire cohort, with no differences between groups. Among patients with ≥ 1 PRA, increasing number of allergies significantly correlated with increasing OME consumption across all time points (week 1, P = .016; week 2, P = .001; total, P = .005). Conclusions: The presence of PRAs did not impact postoperative narcotic usage, pain, or satisfaction. Increasing numbers of PRAs did, however, significantly correlate with higher narcotic use. These results may have implications for postoperative pain management in this population.

The Association Between Psychological Factors and Outcomes After Distal Radius Fracture

PURPOSE

The aim of this study was to identify psychological factors associated with pain intensity and disability following distal radius fracture.

METHODS

We prospectively followed 216 adult patients with distal radius fracture for 9 months. Demographics, injury and treatment details, and psychological measures (Hospital Anxiety and Depression Score [HADS], Pain Catastrophizing Scale, Posttraumatic Stress Disorder Checklist-Civilian, Tampa Scale for Kinesiophobia, Illness Perception Questionnaire Brief [IPQB], General Self-Efficacy Scale, and Recovery Locus of Control [RLOC]) were collected at enrollment. Multivariable linear regression was used to identify factors associated with Disabilities of the Arm, Shoulder, and Hand Questionnaire (DASH) and Likert pain scores.

RESULTS

Higher 10-week DASH scores were associated with increased age, the presence of a nerve pathology, increased HADS Depression subscale scores, increased IPQB scores, and lower RLOC scores. Higher 9-month DASH scores were associated with increased age, increased deprivation scores, increased numbers of medical comorbidities, a greater degree of radial shortening, increased HADS Depression subscale scores, and lower RLOC scores. A higher 10-week pain score was associated with increased deprivation and IPQB scores. A higher pain score at 9 months was associated with an increased number of medical comorbidities.

CONCLUSIONS

Psychosocial factors measured early after fracture are associated with pain and disability up to 9 months after distal radius fracture. Illness perception is a potentially modifiable psychological construct not previously studied in hand conditions. It may provide a suitable target for psychological interventions that could enhance recovery.

TYPE OF STUDY/LEVEL OF EVIDENCE

Prognostic II.

Preoperative Opioid Use Results in Greater Postoperative Opioid Consumption After Thumb Basal Joint Arthroplasty

Purpose

Thumb basal joint arthroplasty surgery is a common hand surgery after which patients often require opioids. To better understand safe opioid consumption patterns, this study sought to identify risk factors for filling a second prescription and/or prolonged opioid use (prescription over 6 months after the surgery). Preoperative opioid use was hypothesized to show an association with greater postoperative opioid use.

Methods

A retrospective review of consecutive patients who underwent primary thumb basal joint arthroplasty was conducted, yielding 110 patients for analysis. Demographic and clinical data were collected. Opioid prescription data were extracted from 6 months before the surgery to 9 months after the surgery using a state prescription drug monitoring program. Bivariate and multivariate analyses were performed for filling a second opioid prescription or filling an opioid prescription over 6 months after the surgery.

Results

All the patients filled their initial postoperative prescription. Of the 110 patients, 26.4% filled an opioid prescription before the surgery, 42% filled a second postoperative prescription, and 14.5% were still consuming opioids over 6 months after the surgery. Patients using preoperative opioids had 7-fold higher odds of filling a second opioid prescription and 37-fold higher odds of prolonged use. No other demographic or clinical factors, including the type of procedure or number of initial opioids prescribed, were associated with increased use of postoperative opioids. Of all the opioid prescriptions filled after the initial postoperative prescription, only 9.3% were prescribed by a surgeon’s office.

Conclusions

Patients who undergo thumb basal joint arthroplasty with preoperative opioid use have much greater odds of filling a second opioid prescription and prolonged use after the surgery. Low initial surgeon-provided opioid dosages did not correlate to filling a second prescription, indicating that lower initial doses are feasible. Finally, nearly all opioid-naïve patients who filled a second opioid prescription received them from providers other than a surgeon, indicating the need for greater communication with nonsurgical providers simultaneously caring for patients in the perioperative period.

Type of study/level of evidence

Therapeutic III.

Guided Mindfulness Meditation for Pain Control After Septorhinoplasty: A Randomized-Controlled Pilot Study

Background: Mindfulness meditation has been shown to alleviate pain and may be an appealing adjunctive pain management option. Objective: To compare measures of pain, mindfulness, and opioid usage, and collect evaluative feedback among patients undergoing septorhinoplasty with and without guided meditation. Methods: Patients undergoing septorhinoplasty were randomized to online-guided meditation postoperative days 0-3 versus standard care; all received the same pain medications. Primary outcome measures included pain intensity, opioid consumption, mindfulness scores, and evaluative feedback. Results: Twenty-one patients received guided meditation and 24 received standard care. No significant difference in opioid consumption or pain scores was seen with the exception of higher opioid use in patients with intranasal splints in the standard care group. Twenty out of 21 patients provided evaluative feedback; all recommended mindfulness meditation to friends undergoing nasal surgery, 90% reported it was beneficial, 85% believed it eased pain/discomfort, and 80% believed it aided with sleep. Conclusion: Although no objective difference was found in opioid consumption or pain scores, most patients reported that guided mindfulness meditation was beneficial to their recovery following septorhinoplasty.

Improving Postoperative Care Through Mindfulness-Based Cognitive Therapy and Isometric Exercise Interventions: A Systematic Review (Preprint)

Background

Mindfulness-based cognitive therapy and isometric exercise training (IET) interventions are relatively new approaches to maintain physical functioning, alleviate pain, prevent joint stiffness and muscular atrophy, and positively influence other postoperative care outcomes.

Objective

The aim of this review was to identify the impacts of mindfulness-based interventions (MBIs) and IET and, more specifically, their combination, which have not previously been assessed to our knowledge.

Methods

Studies were identified by searching the PubMed and Cochrane databases within the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) algorithm format and using relevant keyword combinations, which resulted in 39 studies meeting the inclusion criteria.

Results

In general, MBI was shown to positively impact both pain relief and physical functioning, while IET positively impacted physical functioning. Numerous other benefits, including improved quality of life and decreased postoperative opioid use, were also described from both interventions; however, further research is needed to confirm these findings as well as to determine other possible benefits. No studies were found that combined MBI and IET.

Conclusions

Despite many positive results from each individual intervention, there is a lack of information about how the combination of MBI and IET might impact postoperative care. The combination of these two interventions might prove to be more effective than each individual intervention alone, and the findings from this review show that they could even be complementary. Going forward, research should be expanded to study the possible benefits of the combination of MBI and IET in postoperative care routines as well as other possible combinations.

Exponential correlations among neuropathic components, pain intensity, and catastrophic thoughts in patients with musculoskeletal pain disorder

BACKGROUND

Neuropathic components and catastrophic thoughts contribute to the quality of life impairments in patients with chronic pain. This retrospective cross-sectional observational study examined the extent to which neuropathic components affect pain intensity and catastrophic thoughts using a mathematical model.

METHODS

Participants with chronic pain with spinal or joint disorders were rated for pain intensity using a numerical rating scale (NRS), painDETECT questionnaire (PDQ), and pain catastrophizing scale (PCS). We plotted to scatter plots between PDQ and either NRS or PCS and drew best-fit lines for patients with leg pain only. We divided patients with both leg and back pain into two clusters: located above or below the baselines, and then we drew the best-fit lines for each cluster. We performed factor analysis on PDQ items and developed and validated a discriminant to identify patients located above the baseline in another cohort of musculoskeletal disorders.

RESULTS

We analyzed 163 patients with lumbar disorders and 205 patients with joint disorders. PDQ correlated exponentially with NRS and PCS of the patients located above the baseline in both disorder groups and correlated linearly or logarithmically in patients located below the baseline. Factor analysis revealed three sets of pain characteristics for each disorder. We developed the discriminant from PDQ items to identify patients showing exponential correlations and then validated it in another cohort of 137 patients. The coefficient for "pressure-evoked pain" was the highest in the discriminant.

CONCLUSIONS

Mathematical models indicate neuropathic components demonstrate linear correlations with NRS and PCS generally, but exponential correlations in a cluster of the patients with musculoskeletal pain. We developed and validated the discriminant based on pain characteristics to identify such patients; "pressure-evoked pain" was the most significant contributor.

Pain Catastrophizing, Opioid Misuse, Opioid Use, and Opioid Dose in People With Chronic Musculoskeletal Pain: A Systematic Review

The objective of this study was to analyze the cross-sectional and longitudinal association between pain catastrophizing and opioid misuse, opioid use, and opioid dose in people with chronic musculoskeletal pain. For this systematic review, CINAHL, Embase, PsycINFO, PubMed, manual searches, and grey literature were searched from inception to May 2020. Observational studies were included if they evaluated the association between pain catastrophizing and opioid dose, opioid use, and/or opioid misuse in people with chronic musculoskeletal pain. Two reviewers independently performed the study selection, data extraction, risk of bias assessment, and the certainty of the evidence judgment. Seven observational studies (all cross-sectional designs) satisfied the eligibility criteria, with a total sample of 2,160 participants. Pain catastrophizing was associated with opioid misuse. The results were inconsistent regarding the association between pain catastrophizing and opioid use. A lack of association was found considering pain catastrophizing and the opioid dose. However, the presence of risk of bias and imprecision was serious across the included studies, and therefore, the overall certainty of the evidence was judged as very low for all the outcome measures. This report concludes that pain catastrophizing seem to be associated with opioid misuse in people with chronic musculoskeletal pain. However, the very low certainty of the current evidence confers to interpret the finding of this review as exclusively informative. PERSPECTIVE: This article shows that pain catastrophizing seem to be associated with opioid misuse in people with chronic musculoskeletal pain. The overall certainty of the evidence was judged to be very low, thus, these results should be interpreted with caution.

Thumb Carpometacarpal Arthritis: Prognostic Indicators and Timing of Further Intervention Following Corticosteroid Injection

PURPOSE

Corticosteroid injections are commonly used to treat thumb carpometacarpal arthritis in adults. We aimed to define the timing of surgery following an initial corticosteroid injection and identify patient-specific factors that influence the likelihood of repeat injection or surgery.

METHODS

We performed a retrospective analysis of all patients who underwent a first-time corticosteroid injection for carpometacarpal arthritis between 2009 and 2017. Demographic information, radiographic classification, additional nonsurgical therapies, complications, and outcomes were collected. Primary outcomes were repeat injection and surgical reconstruction. Kaplan-Meier survival analysis was used to characterize the timing of surgical intervention and Cox regression modeling was used to identify predictors of subsequent intervention.

RESULTS

Two-hundred thirty-nine patients (average age, 62.9 years) were identified, of which 141 (59.0%) had a repeat injection and 90 (37.6%) underwent surgery. There were no patient-specific characteristics associated with repeat injection. Eaton stage III/IV arthritis at initial presentation, current smoking status, and prior ipsilateral hand surgery were associated with an increased likelihood of surgery. By Kaplan-Meier analyses, 87.7% of patients who presented with Eaton III/IV arthritis did not have surgery within a year and 66.7% of these patients did not have surgery within 5 years.

CONCLUSIONS

In this retrospective observational cohort study with 10-year follow-up from a 4-surgeon practice, advanced radiographic arthritis, current smoking status, and a history of ipsilateral hand surgery were patient-specific factors that predicted progression to surgery following injection. Of patients who presented with advanced radiographic arthritis, one-third underwent surgery within 5 years of initial injection. Although injection efficacy and causality cannot be inferred based on an observational longitudinal analysis, these data identify patient-specific factors that may have an impact on surgical decision-making and a potential timeframe for future intervention.

TYPE OF STUDY/LEVEL OF EVIDENCE

Prognostic IV.

High Frequency, Low Background Rate Extrapleural Programmed Intermittent Bolus Ropivacaine Provides Superior Analgesia Compared with Continuous Infusion for Acute Pain Management Following Thoracic Surgery: A Retrospective Cohort Study

Background

Thoracic surgery often results in severe postoperative pain. Regional analgesia via surgically placed extrapleural local anaesthetic (LA) and continuous infusion (CI) is an effective technique, however usually requires supplemental opioid to achieve satisfactory patient analgesia. We hypothesized that high frequency, low background rate extrapleural programmed intermittent boluses (PIB) of LA by could achieve superior patient analgesia and reduced oral morphine equivalent daily dosage (OMEDD) requirements for up to 3 days after thoracic surgery vs. CI.

Methods

We retrospectively analysed data from 84 adult patients receiving extrapleural analgesia after thoracic surgery in a single tertiary teaching hospital. The primary outcome measure was the effect of PIB vs. CI on maximum daily 11-point numerical rating scale (NRS-11) ratings as determined by multivariate linear regression analysis, corrected for OMEDD use, total daily LA dose, surgery type, age, opioid type, and use of ketamine analgesia. Secondary outcome measures were the effect on OMEDD use, the effect of total ‘rescue’ LA boluses, and univariate analyses of the above outcomes and variables.

Results

PIB on day 0, and a higher proportion of LA given as rescue boluses on day 1 were associated with reduced maximum NRS-11 ratings [standardized/ [unstandardized] beta coefficient -0.34/ [-0.92 NRS-11 if PIB] (P = 0.007); and -0.26/ [-0.029 NRS-11 per mg/kg extrapleural ropivacaine] (P = 0.03)], respectively. Only patient age was associated with reduced OMEDD use [day 0: -0.58/ [-4.4 OMEDDs per year of age] (P ≤ 0.005); day 1: -0.49/ [-3.56 OMEDDs per year of age] (P ≤ 0.005); day 2: -0.32/ [-1.9 OMEDDs per year of age] (P = 0.04)]. OMEDD use on day 2, however, was associated with slightly higher maximum NRS-11 ratings [+0.28/ +0.006 NRS-11 per mg OMEDD (P = 0.036)]. On univariate analysis, PIB patients achieved the largest difference in OMEDD use [-98 mg (95% CI -73 to -123 mg)] and NRS-11 ratings [-1.1 (-0.4 to -1.8)] against CI patients on day 3.

Conclusions

Use of high frequency, low background rate PIB extrapleural LA after thoracic surgery appears to have a modest beneficial effect on acute pain, but not OMEDD use, over CI when adjusted for patient, surgical and other analgesic factors after thoracic surgery. Further work is required to elucidate the potential magnitude of effect that extrapleural LA given by PIB over CI can achieve.