Battlefield Acupuncture Does Not Provide Additional Improvement in Pain When Combined With Standard Physical Therapy After Shoulder Surgery: A Randomized Clinical Trial

INTRODUCTION

Shoulder stabilization surgery is common among military personnel, causing severe acute postoperative pain that may contribute to the development of chronic pain, thereby reducing military readiness. Battlefield Acupuncture (BFA) has shown promise as a non-pharmaceutical intervention for acute postoperative pain. The purpose of this study was to determine the effectiveness of BFA combined with standard physical therapy on pain, self-reported mood, self-reported improvement, and medication use in patients after shoulder stabilization surgery.

MATERIALS AND METHODS

The study design was a single-blind, randomized clinical trial, approved by the Naval Medical Center Portsmouth Institutional Review Board and registered with ClinicalTrials.gov (NCT04094246). Ninety-five participants were recruited after shoulder stabilization surgery. Participants were randomized via concealed allocation into a standard physical therapy (PT) group or a group receiving standard PT and BFA. Both groups received standard postoperative pain medication. The BFA intervention followed a standard protocol with the insertion of gold aiguille d'acupuncture emiermanente needles at 5 specific points in the ear. At 4 time points (baseline [24-48 hours], 72 hours, 1 week, and 4 weeks post-surgery), participants reported worst and average pain using a Visual Analog Scale (VAS), self-reported mood using the Profile of Mood States (POMS), self-recorded medication intake between study visits, and self-reported improvement in symptoms using a Global Rating of Change (GROC) Scale. Outcome assessors were blinded to treatment allocation. An alpha level of 0.05 was set a priori. For pain, a mixed-model analysis of variance was used to analyze the interaction effect between group and time. Differences in baseline data, total opioid usage, and pain change scores between groups were analyzed using independent t-tests.

RESULTS

Of the 95 participants enrolled, 7 failed to provide complete study visits after the baseline, leaving 88 patients (43 BFA, 45 control, mean age 21.8 (2.1) years, 23% female). There were no significant group-by-time interactions for VAS worst pain (F = 0.70, P = .54), VAS average pain (F = 0.99, P = .39), the POMS (F = 1.04, P = .37), or GROC (F = 0.43, P = 0.63). There was a significant main effect of time for VAS worst pain (F = 159.7, P < .001), VAS average pain (F = 122.4, P < .001), the POMS (F = 11.4, P < .001), and the GROC (F = 78.5, P < .001). While both groups demonstrated statistically significant and clinically meaningful improvements in pain and self-reported mood over time, BFA did not provide any additional benefit compared to standard physical therapy alone. There was no significant difference in opioid usage between groups at 4 weeks (t = 0.49, P = .63). Finally, both groups also demonstrated statistically significant and clinically meaningful self-reported improvements in function, but again, there was no additional benefit when adding BFA to standard physical therapy.

CONCLUSION

The results of this study do not support the effectiveness of BFA for postsurgical pain management as there were no significant differences in pain, self-reported mood, self-reported improvement, and medication use between participants who received BFA and those who did not. As this is the only known study of BFA in postsurgical participants, continued research is needed to determine if BFA is effective for pain reduction in that setting.

CLINICAL TRIAL REGISTRATION

ClinicalTrials.gov, NCT04094246. Registered September 16, 2019, http://clinicaltrials.gov/NCT04094246.

Public Health Informatics and the Perioperative Physician: Looking to the Future

The role of informatics in public health has increased over the past few decades, and the coronavirus disease 2019 (COVID-19) pandemic has underscored the critical importance of aggregated, multicenter, high-quality, near-real-time data to inform decision-making by physicians, hospital systems, and governments. Given the impact of the pandemic on perioperative and critical care services (eg, elective procedure delays; information sharing related to interventions in critically ill patients; regional bed-management under crisis conditions), anesthesiologists must recognize and advocate for improved informatic frameworks in their local environments. Most anesthesiologists receive little formal training in public health informatics (PHI) during clinical residency or through continuing medical education. The COVID-19 pandemic demonstrated that this knowledge gap represents a missed opportunity for our specialty to participate in informatics-related, public health-oriented clinical care and policy decision-making. This article briefly outlines the background of PHI, its relevance to perioperative care, and conceives intersections with PHI that could evolve over the next quarter century.

Predictors of persistent postoperative opioid use following colectomy: a population-based cohort study from England

This retrospective cohort study on adults undergoing colectomy from 2010 to 2019 used linked primary (Clinical Practice Research Datalink), and secondary (Hospital Episode Statistics) care data to determine the prevalence of persistent postoperative opioid use following colectomy, stratified by pre-admission opioid exposure, and identify associated predictors. Based on pre-admission opioid exposure, patients were categorised as opioid-naïve, currently exposed (opioid prescription 0-6 months before admission) and previously exposed (opioid prescription within 7-12 months before admission). Persistent postoperative opioid use was defined as requiring an opioid prescription within 90 days of discharge, along with one or more opioid prescriptions 91-180 days after hospital discharge. Multivariable logistic regression analyses were conducted to obtain odds ratios for predictors of persistent postoperative opioid use. Among the 93,262 patients, 15,081 (16.2%) were issued at least one opioid prescription within 90 days of discharge. Of these, 6791 (45.0%) were opioid-naïve, 7528 (49.9%) were currently exposed and 762 (5.0%) were previously exposed. From the whole cohort, 7540 (8.1%) developed persistent postoperative opioid use. Patients with pre-operative opioid exposure had the highest persistent use: 5317 (40.4%) from the currently exposed group; 305 (9.8%) from the previously exposed group; and 1918 (2.5%) from the opioid-naïve group. The odds of developing persistent opioid use were higher among individuals who used long-acting opioid formulations in the 180 days before colectomy than those who used short-acting formulations (odds ratio 3.41 (95%CI 3.07-3.77)). Predictors of persistent opioid use included: previous opioid exposure; high deprivation index; multiple comorbidities; use of long-acting opioids; white race; and open surgery. Minimally invasive surgical approaches were associated with lower odds of persistent opioid use and may represent a modifiable risk factor.

Risk Factors for Prolonged Opioid Use After Open Treatment of Distal Radius Fractures

BACKGROUND

The objective of this study was to evaluate factors associated with postoperative opioid use after open treatment of distal radius fractures.

METHODS

The Humana insurance claims database was queried for open treatment of distal radius fractures by Current Procedural Terminology codes. The search was further refined to identify patients who filled an opioid prescription within 6 weeks after their surgery. The study's outcomes were: (1) limited postoperative opioid use, defined as filling a prescription once in the 6-week to 6-month period after surgery; and (2) persistent postoperative opioid use, defined as filling a prescription more than once in the 6-week to 6-month period after surgery. Logistic regression models were performed to identify factors associated with limited and persistent postoperative opioid use. Subgroup analyses were performed among opioid-naïve patients and those with open fractures.

RESULTS

This study identified 9141 of 19 220 total patients with limited and persistent opioid use. Significant risk factors included nonhome discharge, inpatient surgical setting, long-term pain, tobacco abuse, and age less than 65 years. Of note, both preoperative opioid use within 1 month before surgery (odds ratio [OR], 2.6; 95% confidence interval [CI], 2.2-2.9) and preoperative opioid use between 1 and 6 months before surgery (OR, 4.0; 95% CI, 3.7-4.4) were significantly associated with persistent postoperative opioid use.

CONCLUSIONS

This study has identified numerous risk factors associated with postoperative opioid use after open treatment of distal radius fractures. Understanding these risk factors is the first step toward reducing postoperative opioid use.

Influence of perioperative opioid-related patient education: A systematic review and meta-analysis

OBJECTIVE

To determine the role of perioperative protocolized opioid-specific patient education on opioid consumption for individuals undergoing surgical procedures.

METHODS

We searched Medline, Embase, and the Cochrane Central Register of Controlled Trials for randomized controlled trials (RCTs) that compared protocolized perioperative opioid-specific patient education to the usual care for adult individuals undergoing surgical interventions. The standardized mean difference (SMD) was used to represent continuous outcomes while the risk ratio (RR) was used to represent dichotomous outcomes.

RESULTS

In total, 15 RCTs that enrolled 2546 participants were deemed eligible. Protocolized opioid-specific patient education showed a significant reduction in postoperative opioid consumption and postoperative pain score compared to usual care (SMD= -0.15, 95% confidence interval [CI]: -0.28 to -0.03 and SMD= -0.17, 95% CI: -0.28 to -0.06, respectively). No significant difference was found between the protocolized opioid-specific patient education and the usual care in terms of the number of refill requests (RR=0.82, 95% CI: 0.50-1.34), patients with opioid leftovers (RR=0.92, 95% CI: 0.78-1.08), and patients taking opioids after hospital discharge.

CONCLUSIONS

This meta-analysis demonstrated that protocolized opioid-specific patient education significantly reduces postoperative opioid consumption and pain score but has no influence on the number of opioid refill requests, opioid leftovers, and opioid use after hospital discharge.

PRACTICE IMPLICATIONS

Healthcare professionals may offer opioid-related educational sessions for the surgical patients during the perioperative period through a video-based material that emphasizes the role of alternative analgesics to opioids, patients' expectations about the post-operative pain, and the potential side effects of opioid consumptions.

Peri-OPerative Pain Management, Education & De-escalation (POPPMED), a novel anaesthesiologist-led program, significantly reduces acute and long-term postoperative opioid requirements: a retrospective cohort study

Supplemental Digital Content is Available in the Text.

Perioperative pain management, education, and de-escalation, a single anaesthesiologist-led perioperative service, managed older, high-risk opioid-tolerant patients to achieve sustained oral morphine equivalent daily dosage reductions safely after major orthopaedic, abdominal, and neurosurgery.

Introduction:

The opioid tolerant patient requiring surgery is highly likely to be discharged on high Oral Morphine Equivalent Daily Dosages (OMEDDs), with concomitant risk of increased morbidity and mortality.

Objectives:

We proposed that a single anaesthesiologist-led POPPMED (Peri-Operative Pain Management, Education & De-escalation) service could reduce both short and long-term postoperative patient OMEDDs.

Methods:

From April 2017, our anaesthesiologist-led POPPMED service, engaged 102 perioperative patients treated with >50mg preoperative OMEDDs. We utilized behavioural interventions; acute opioid reduction and/ or rotation; and regional, multimodal and ketamine analgesia to achieve lowest possible hospital discharge and long term OMEDDs.

Results:

Patients' preoperative OMEDDs were [median (IQR): 115mg (114mg)], and were representative of an older [age 62 (15) years], high-risk [89% ASA status 3 or 4] patient population. 46% of patients received an acute opioid rotation; 70% received ketamine infusions; and 44% regional analgesia. OMEDDs on discharge [-25mg (82mg), p=0.003] and at 6-12 months [-55mg (105mg ), p<0.0001] were significantly reduced; 84% and 87% of patients achieved OMEDD reduction on discharge and at 6-12 months. Patients with >90mg preoperative OMEDDs achieved greater reductions [discharge: 71% of patients, -52 mg (118 mg) p<0.0001; 6-12 months: 90% of patients, -90mg (115mg), p<0.0001]. On comparison with a pre-POPPMED surgical cohort, Postoperative Day 1-3 11-point Numerical Rating Scale (NRS-11) area under the curve (AUC) measurements at rest and on movement were not significantly different (largest NRS-11:hours AUC difference [median(IQR)] 22 [13], p= 0.24). Hospital length of stay was variably increased.

Conclusions:

POPPMED achieved sustained OMEDD reductions safely in an older, high-risk opioid tolerant population, with analgesia comparable to a non-POPPMED cohort, and surgery specific effects on length of stay.

Prescription quantity and duration predict progression from acute to chronic opioid use in opioid-naïve Medicaid patients

Opiates used for acute pain are an established risk factor for chronic opioid use (COU). Patient characteristics contribute to progression from acute opioid use to COU, but most are not clinically modifiable. To develop and validate machine-learning algorithms that use claims data to predict progression from acute to COU in the Medicaid population, Adult opioid naïve Medicaid patients from 6 anonymized states who received an opioid prescription between 2015 and 2019 were included. Five machine learning (ML) Models were developed, and model performance assessed by area under the receiver operating characteristic curve (auROC), precision and recall. In the study, 29.9% (53820/180000) of patients transitioned from acute opioid use to COU. Initial opioid prescriptions in COU patients had increased morphine milligram equivalents (MME) (33.2 vs. 23.2), tablets per prescription (45.6 vs. 36.54), longer prescriptions (26.63 vs 24.69 days), and higher proportions of tramadol (16.06% vs. 13.44%) and long acting oxycodone (0.24% vs 0.04%) compared to non- COU patients. The top performing model was XGBoost that achieved average precision of 0.87 and auROC of 0.63 in testing and 0.55 and 0.69 in validation, respectively. Top-ranking prescription-related features in the model included quantity of tablets per prescription, prescription length, and emergency department claims. In this study, the Medicaid population, opioid prescriptions with increased tablet quantity and days supply predict increased risk of progression from acute to COU in opioid-naïve patients. Future research should evaluate the effects of modifying these risk factors on COU incidence.

Psychiatric Comorbidities Associated with Persistent Postoperative Opioid Use

PURPOSE OF REVIEW

This review outlines the psychiatric comorbidities associated with persistent opioid use in the postoperative period. We finish our analysis with evidence-based, patient-centered interventions that can be rendered in the perioperative setting to decrease postoperative opioid requirements.

RECENT FINDINGS

Opioids are overprescribed in the USA, especially in the postoperative setting. Excess opioids can result in diversion and contribute to the ongoing opioid epidemic. Mental health and substance use disorders can contribute to persistent postoperative opioid use. Adequately managing these disorders preoperatively promises to reduce persistent postoperative opioid use. Due to the lack of homogenous, evidence-based recommendations on the appropriate quantity and duration of postoperative opioid therapy, there is wide variability in provider prescribing habits. Further research is needed to establish surgery-specific postoperative opioid therapy protocols. Opioids continue to be a mainstay in the treatment of postoperative pain. Unmonitored postoperative opioid use can lead to opioid use disorder. Mental health disorders increase susceptibility to persistent postoperative opioid use. By managing these psychiatric illnesses preoperatively, clinicians have the ability to decrease opioid consumption postoperatively. Lastly, given the healthcare burden of opioid misuse and abuse, it is important to establish concrete protocols to guide provider-prescribing habits.

Analgesic Efficacy of Gabapentin and Pregabalin in Patients Undergoing Laparoscopic Bariatric Surgeries: a Systematic Review and Meta-analysis

This meta-analysis investigated the effect of oral gabapentinoids (i.e., pregabalin and gabapentin) on analgesic consumption (i.e., primary outcome) and pain relief (i.e., secondary outcome) in patients following bariatric surgery. Analysis of five eligible trials published between 2010 and 2019 including 363 participants receiving gabapentinoids revealed a significantly lower morphine consumption [mean difference (MD) =  - 15.1 mg, p = 0.004; evidence certainty: low] and risk of nausea/vomiting [risk ratio (RR) = 0.49, p = 0.002; evidence certainty: high] at postoperative 6-24 h. There was also a lower pain score at postoperative 0-4 h (MD =  - 1.41, p < 0.00001; evidence certainty: low) and 6-12 h (MD =  - 0.9, p = 0.007; evidence certainty: low) compared with controls, while pain severity at postoperative 24 h was comparable between two groups. In summary, preoperative oral gabapentinoids optimized postoperative pain outcomes and reduced risk of nausea/vomiting following bariatric surgery.

Four-Corner Arthrodesis versus Proximal Row Carpectomy: Risk Factors and Complications Associated with Prolonged Postoperative Opioid Use

Introduction  This article compares opioid use patterns following four-corner arthrodesis (FCA) and proximal row carpectomy (PRC) and identifies risk factors and complications associated with prolonged opioid consumption. Materials and Methods  The PearlDiver Research Program was used to identify patients undergoing primary FCA (Current Procedural Terminology [CPT] codes 25820, 25825) or PRC (CPT 25215) from 2007 to 2017. Patient demographics, comorbidities, perioperative opioid use, and postoperative complications were assessed. Opioids were identified through generic drug codes while complications were defined by International Classification of Diseases, Ninth and Tenth Revisions, Clinical Modification codes. Multivariable logistic regressions were performed with p < 0.05 considered statistically significant. Results  A total of 888 patients underwent FCA and 835 underwent PRC. Three months postoperatively, more FCA patients (18.0%) continued to use opioids than PRC patients (14.7%) ( p = 0.033). Preoperative opioid use was the strongest risk factor for prolonged opioid use for both FCA (odds ratio [OR]: 4.91; p < 0.001) and PRC (OR: 6.33; p < 0.001). Prolonged opioid use was associated with an increased risk of implant complications (OR: 4.96; p < 0.001) and conversion to total wrist arthrodesis (OR: 3.55; p < 0.001) following FCA. Conclusion  Prolonged postoperative opioid use is more frequent in patients undergoing FCA than PRC. Understanding the prevalence, risk factors, and complications associated with prolonged postoperative opioid use after these procedures may help physicians counsel patients and implement opioid minimization strategies preoperatively.

Legislation Limiting Postoperative Opioid Prescribing Does Not Impact Patients' Perception of Pain Management After Total Joint Arthroplasty

BACKGROUND

In an effort to combat the opioid epidemic, state legislation was passed to limit postoperative narcotic prescribing. The purpose of this study was to assess if the legislation had an impact on patients' perception of pain management after total hip arthroplasty (THA) and total knee arthroplasty (TKA). We hypothesized that patients would not perceive their pain management experience to be impacted.

METHODS

A prospective survey study was performed on all consenting patients undergoing primary THA or TKA at a large academic center from July 2019 to February 2020. Patients taking opioids preoperatively were excluded. Surveys given preoperatively and at 2 weeks postoperatively assessed patients' concerns surrounding postoperative pain control and their perception of the impact of a newly implemented legislation. Descriptive analysis and Spearman's rho correlation coefficients were performed.

RESULTS

Ninety-three patients met inclusion criteria and consented. Seventy-nine (29 THA and 50 TKA) completed both surveys. Preoperatively, 9.2% of patients were concerned that the legislation would impact their pain management, despite 43.0% having pain concerns. Postoperatively, 87.0% of patients felt that the legislation had no or mild effect on pain control. Although 36.7% of patients reported moderate to severe postoperative pain, 15.2% of patients reported being dissatisfied with pain control. There was no statistical correlation between preoperative pain concern and feelings that the legislation impacted pain.

CONCLUSIONS

After primary THA and TKA, our data suggest that patients' perception of their pain management was not impacted by the legislation. Prescribers should be reassured that the decreased allowable opioids does not hinder the patients' perception of their pain management experience.

Methadone maintenance patients lack analgesic response to a cumulative intravenous dose of 32 mg of hydromorphone

OBJECTIVES

Acute pain management in patients with opioid use disorder who are maintained on methadone presents unique challenges due to high levels of opioid tolerance in this population. This randomized controlled study assessed the analgesic and abuse liability effects of escalating doses of acute intravenous (IV) hydromorphone versus placebo utilizing a validated experimental pain paradigm, quantitative sensory testing (QST).

METHODS

Individuals (N = 8) without chronic pain were maintained on 80-100 mg/day of oral methadone. Participants received four IV, escalating/incremental doses of hydromorphone over 270 min (32 mg total) or four placebo doses within a session test day. Test sessions were scheduled at least one week apart. QST and abuse liability measures were administered at baseline and after each injection.

RESULTS

No significant differences between the hydromorphone and placebo control conditions on analgesic indices for any QST outcomes were detected. Similarly, no differences on safety or abuse liability indices were detected despite the high doses of hydromorphone utilized. Few adverse events were detected, and those reported were mild in severity.

CONCLUSIONS

The findings demonstrate that methadone-maintained individuals are highly insensitive to the analgesic effects of high-dose IV hydromorphone and may require very high doses of opioids, more efficacious opioids, or combined non-opioid analgesic strategies to achieve adequate analgesia.

Chronic opioid use following surgery for head and neck cancer patients undergoing free flap reconstruction

BACKGROUND

Physician opioid-prescribing patterns have significant impacts on the current opioid crisis. Patients who use opioids in the postoperative period are at risk of developing chronic postoperative opioid use. This study determined the rate of chronic postoperative opioid use among head and neck cancer patients undergoing primary surgery with free-flap reconstruction. Additionally, this study identified major risk factors associated with the development of chronic postoperative opioid use.

METHODS

A retrospective chart review was performed for all adults (age ≥ 18 years) undergoing primary head and neck surgical resection with free-flap reconstruction between January 2008 and December 2015. Patients were identified from a prospectively collected database, Otobase™. Data from the provincial drug insurance program were used to capture drug dispensing information to determine chronic opioid use at 3- and 12-months postoperatively. Data extracted from Otobase™ included patient demographics, social habits, clinical stage, pathological stage, type of surgery, and adjuvant treatment.

RESULTS

The total cohort was comprised of 212 patients. Chronic opioid use at 3- and 12- months postoperatively was observed in 136 (64%) and 116 (55%) patients, respectively. Of the 212 patients, 85 patients (40%) were identified as preoperative opioid users and 127 were opioid naïve (60%). Of the 85 patients who were preoperative opioid users, 70 (82%) and 63 (77%) patients continued to use opioids 3- and 12-months postoperatively, respectively. The proportion of opioid-naïve patients who were using opioids at 3- and 12-months postoperatively was 52% (66 patients) and 42% (53 patients), respectively. Identified risk factors included preoperative opioid use, prior tobacco use, advanced pathologic T-stage, and adjuvant treatment.

CONCLUSIONS

Among head and neck cancer patients that have undergone major resection with free-flap reconstruction, the prevalence of chronic postoperative opioid users was considerable. Identified risk factors included preoperative opioid use, prior tobacco use, tumor stage, and adjuvant treatment.

Nudging patients and surgeons to change ambulatory surgery pain management: Results from an opioid buyback program

BACKGROUND

Optimal postoperative opioid stewardship combines adequate pain medication to control expected discomfort while avoiding abuse and community diversion of unused prescribed opioids. We hypothesized that an opioid buyback program would motivate patients to return unused opioids, and surgeons will use that data to calibrate prescribing.

METHODS

Prospective cohort study of postambulatory surgery pain management at a level II Veterans Affairs rural hospital (2017-2019). Eligible patients were offered $5/unused opioid pill ($50 limit) returned to our Veterans Affairs hospital for proper disposal. After 6 months, buyback data was shared with each surgical specialty.

RESULTS

Overall, 934 of 1,880 (49.7%) eligible ambulatory surgery patients were prescribed opioids and invited to participate in the opioid buyback. We had 281 patients (30%) return 3,165 unused opioid pills; this return rate remained constant over the study period. In 2017, 62.4% of patients were prescribed an opioid; after data was shared with providers, prescriptions for opioids were reduced to 50.7% and 38.3% of eligible patients in 2018 and 2019, respectively (P < .0001). The median morphine milligram equivalents prescribed also decreased from 108.8 morphine milligram equivalents in 2017 to 75.0 morphine milligram equivalents in 2018 and sustained at 75.0 morphine milligram equivalents in 2019 (P < .001). Surgical providers, surgeries performed, patient characteristics, and 30-day refill rates were similar throughout the study period.

CONCLUSION

A small financial incentive resulted in patients returning unused opioids after ambulatory surgery. Feedback to surgeons regarding opioids returned reduced the proportion of patients prescribed an opioid and the amount of opioid after ambulatory surgery without an increase in refills.

Perioperative Opioid Prescribing Patterns and Readmissions After Total Knee Arthroplasty in a National Cohort of Veterans Health Administration Patients

OBJECTIVE

Among Veterans Health Administration (VHA) patients who undergo total knee arthroplasty (TKA) nationally, what are the underlying readmission rates and associations with perioperative opioid use, and are there associations with other factors such as preoperative health care utilization?

METHODS

We retrospectively examined the records of 5,514 TKA patients (primary N = 4,955, 89.9%; revision N = 559, 10.1%) over one fiscal year (October 1, 2010-September 30, 2011) across VHA hospitals nationwide. Opioid use was classified into no opioids, tramadol only, short-acting only, or any long-acting. We measured readmission within 30 days and the number of days to readmission within 30 days. Extended Cox regression models were developed.

RESULTS

The overall 30-day hospital readmission rate was 9.6% (N = 531; primary 9.5%, revision 11.1%). Both readmitted patients and the overall sample were similar on types of preoperative opioid use. Relative to patients without opioids, patients in the short-acting opioids only tier had the highest risk for 30-day hospital readmission (hazard ratio = 1.38, 95% confidence interval = 1.14-1.67). Preoperative opioid status was not associated with 30-day readmission. Other risk factors for 30-day readmission included older age (≥66 years), higher comorbidity and diagnosis-related group weights, greater preoperative health care utilization, an urban location, and use of preoperative anticonvulsants.

CONCLUSIONS

Given the current opioid epidemic, the routine prescribing of short-acting opioids after surgery should be carefully considered to avoid increasing risks of 30-day hospital readmissions and other negative outcomes, particularly in the context of other predisposing factors.

Predictors of long-term use of prescription opioids in the community-dwelling population of adults without a cancer diagnosis: a retrospective cohort study

BACKGROUND

Long-term opioid use is a known risk factor for opioid-related harms. We aimed to identify risk factors for and predictors of long-term use of prescription opioids in the community-dwelling population of adults without a diagnosis of cancer, to inform practice change at the point of care.

METHODS

Using Quebec administrative claims databases, we conducted a retrospective cohort study in a random sample of adult members (≥ 18 yr) of the public drug plan who did not have a cancer diagnosis and who initiated a prescription opioid in the outpatient setting between Jan. 1, 2012, and Dec. 31, 2016. The outcome of interest was long-term opioid use (≥ 90 consecutive days or ≥ 120 cumulative days over 12 mo). Potential predictors included sociodemographic factors, medical history, characteristics of the initial opioid prescription and prescriber's specialty. We used multivariable logistic regression to assess the association between each characteristic and long-term use. We used the area under the receiver operating characteristic curve to determine the predictive performance of full and parsimonious models.

RESULTS

Of 124 664 eligible patients who initiated opioid therapy, 4172 (3.3%) progressed to long-term use of prescription opioids. The most important associated factors in the adjusted analysis were long-term prescription of acetaminophen-codeine (odds ratio [OR] 6.30, 95% confidence interval [CI] 4.99 to 7.96), prescription of a long-acting opioid at initiation (OR 6.02, 95% CI 5.31 to 6.84), initial supply of 30 days or more (OR 4.22, 95% CI 3.81 to 4.69), chronic pain (OR 2.41, 95% CI 2.16 to 2.69) and initial dose of at least 90 morphine milligram equivalents (MME) per day (OR 1.24, 95% CI 1.04 to 1.47). Our predictive model, including only the initial days' supply and chronic pain diagnosis, had area under the curve of 0.7618.

INTERPRETATION

This study identified factors associated with long-term prescription opioid use. Limiting the initial supply to no more than 7 days and limiting doses to 90 MME/day or less are actions that could be undertaken at the point of care.

The effectiveness of battlefield acupuncture in addition to standard physical therapy treatment after shoulder surgery: a protocol for a randomized clinical trial

INTRODUCTION

There is a large incidence of shoulder instability among active young athletes and military personnel. Shoulder stabilization surgery is the commonly employed intervention for treating individuals with instability. Following surgery, a substantial proportion of individuals experience acute post-operative pain, which is usually managed with opioid pain medications. Unfortunately, the extended use of opioid medications can have adverse effects that impair function and reduce military operational readiness, but there are currently few alternatives. However, battlefield acupuncture (BFA) is a minimally invasive therapy demonstrating promise as a non-pharmaceutical intervention for managing acute post-operative pain.

METHODS

This is a parallel, two-arm, single-blind randomized clinical trial. The two independent variables are intervention (2 levels, standard physical therapy and standard physical therapy plus battlefield acupuncture) and time (5 levels, 24 h, 48 h, 72 h, 1 week, and 4 weeks post shoulder stabilization surgery). The primary dependent variables are worst and average pain as measured on the visual analog scale. Secondary outcomes include medication usage, Profile of Mood States, and Global Rating of Change.

DISCUSSION

The magnitude of the effect of BFA is uncertain; current studies report confidence intervals of between-group differences that include minimal clinically important differences between intervention and control groups. The results of this study may help determine if BFA is an effective adjunct to physical therapy in reducing pain and opioid usage in acute pain conditions.

TRIAL REGISTRATION

ClinicalTrials.gov NCT04094246 . Registered on 16 September 2019.

The Association of Chronic Opioid Use with Resource Utilization and Outcomes after Emergency General Surgery

INTRODUCTION

Chronic opioid use is prevalent among patients undergoing emergent surgery. We sought to understand it on the outcomes of the most common emergency surgery procedures, Appendectomy and Cholecystectomy.

METHODS

We used the National Inpatient Sample to identify chronic opioid use in emergency appendectomies (n = 953) and cholecystectomies (n = 2826) from 2005 to 2014. Primary outcome was length of stay (LOS), and secondary outcomes included total charges and mortality. LOS was analyzed with multivariate Poisson regression, total charges with multivariate linear regression.

RESULTS

For Appendectomy, the opioid abuse group was younger, had similar gender and racial demographics, had more Medicaid and private insurance and less self-pay, and had no clinically significant differences in comorbidities. Those with chronic opioid use had a 24% increased LOS (20-29%, p < .001) and $5532(±$881, p < .001) higher hospital charges. Mortality was very rare and not different (0.2% vs 0.6%, aOR 0.54 [0.11-2.58], p = .44). For Cholecystectomy, the opioid abuse group was similar in age and gender, had slightly more white individuals, had a slightly different payor mix including higher rate of private insurance, and had no clinically significant differences in comorbidities. Patients with preoperative chronic opioid abuse showed a 14% increased LOS (12-16%, p < .001) and $5352 (± $1065, p < .001) higher hospital charges, but no significant increase in mortality (0.7% vs 0.6%, aOR 1.58 [0.77-3.25], p = .22).

CONCLUSION

Patients with chronic opioid abuse did not have increased mortality following EGS but had increased resource utilization and LOS. These findings may help explore the impact of opioid abuse on hospital and societal cost.

The incidence of persistent postoperative opioid use among U.S. veterans: A national study to identify risk factors

OBJECTIVE

To calculate the incidence and identify the predictors of persistent postoperative opioid use at different postoperative days.

BACKGROUND DATA

A subset of surgical patients continues to use long-term opioids. The importance of the risk factors at different postoperative days is not known.

DESIGN

A historical cohort.

SETTING

Postoperative period.

PATIENTS

Opioid-naive U.S. veterans.

INTERVENTIONS

The surgical group had any one of 19 common invasive procedures. The control group is a 10% random sample. Each control was randomly assigned a surgery date.

MEASUREMENTS

The outcomes were the presence of persistent opioid use as determined by continued filling of prescriptions for opioids on postoperative days 90, 180, 270, and 365.

MAIN RESULTS

A total of 183,430 distinct surgical cases and 1,318,894 controls were identified. 1.0% of the surgical patients were using opioids at 90 days, 0.6% at 180 days, 0.4% at 270 days, and 0.1% at 365 days after the surgery. Surgery was strongly associated with postoperative persistent opioid use at day 90 (OR 3.67, 95% CI, 3.43-3.94, p < 0.001), at day 180 (OR 2.85, 2.67-3.12, p < 0.001), at day 270 (OR 2.63, 2.38-2.91, p < 0.001) and at day 365 (OR 2.11, 1.77-2.51, p < 0.001) compared to non-surgical controls. In risk factor analysis, being male and single were associated with persistent opioid use at earlier time points (90 and 180 days), while hepatitis C and preoperative benzodiazepine use were associated with persistent opioid use at later time points (270 and 365 days).

CONCLUSIONS

Many surgeries or invasive procedures are associated with an increased risk of persistent postoperative opioid use. The postoperative period is dynamic and the risk factors change with time.

Long-term opioid use after bariatric surgery

BACKGROUND

Opioid analgesics are often prescribed to manage pain after bariatric surgery, which may develop into chronic prescription opioid use (CPOU) in opioid-naïve patients. Bariatric surgery may affect opioid use in those with or without presurgical CPOU.

OBJECTIVE

To compare CPOU persistence and incidence in a large multisite cohort of veterans undergoing bariatric surgery (open Roux-en-Y gastric bypass, laparoscopic RYGB, or laparoscopic sleeve gastrectomy) and matched nonsurgical controls.

SETTING

Veterans Administration hospitals.

METHODS

In a retrospective cohort study, we matched 1117 surgical patients with baseline CPOU to 9531 nonsurgical controls, and 2822 surgical patients without CPOU at baseline to 26,392 nonsurgical controls using sequential stratification. CPOU persistence in veterans with baseline CPOU was estimated using generalized estimating equations by procedure type. CPOU incidence in veterans without baseline CPOU was estimated in Cox regression models by procedure type because postoperative pain, complications, and absorption may differ by procedure.

RESULTS

In veterans with baseline CPOU, postsurgical CPOU declined over time for each surgical procedure; these trends did not differ between surgical patients and nonsurgical controls. In veterans without baseline CPOU, compared with nonsurgical controls, bariatric patients had higher CPOU incidence within 5 years after open Roux-en-Y gastric bypass (hazard ratio = 1.19; 95% confidence interval: 1.06-1.34) or laparoscopic open Roux-en-Y gastric bypass (hazard ratio = 1.22, 95% confidence interval: 1.06-1.41). Veterans undergoing laparoscopic sleeve gastrectomy had higher CPOU incidence 1 to 5 years after surgery (hazard ratio = 1.28; 95% confidence interval: 1.05-1.56) than nonsurgical controls.

CONCLUSIONS

Bariatric surgery was associated with greater risk of CPOU incidence in patients without baseline CPOU but was not associated with greater CPOU persistence.

Rate and Risk Factors Associated With Prolonged Opioid Use After Surgery: A Systematic Review and Meta-analysis

IMPORTANCE

Prolonged opioid use after surgery may be associated with opioid dependency and increased health care use. However, published studies have reported varying estimates of the magnitude of prolonged opioid use and risk factors associated with the transition of patients to long-term opioid use.

OBJECTIVES

To evaluate the rate and characteristics of patient-level risk factors associated with increased risk of prolonged use of opioids after surgery.

DATA SOURCES

For this systematic review and meta-analysis, a search of MEDLINE, Embase, and Google Scholar from inception to August 30, 2017, was performed, with an updated search performed on June 30, 2019. Key words may include opioid analgesics, general surgery, surgical procedures, persistent opioid use, and postoperative pain.

STUDY SELECTION

Of 7534 articles reviewed, 33 studies were included. Studies were included if they involved participants 18 years or older, evaluated opioid use 3 or more months after surgery, and reported the rate and adjusted risk factors associated with prolonged opioid use after surgery.

DATA EXTRACTION AND SYNTHESIS

The Meta-analysis of Observational Studies in Epidemiology (MOOSE) and Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) reporting guidelines were followed. Two reviewers independently assessed and extracted the relevant data.

MAIN OUTCOMES AND MEASURES

The weighted pooled rate and odds ratios (ORs) of risk factors were calculated using the random-effects model.

RESULTS

The 33 studies included 1 922 743 individuals, with 1 854 006 (96.4%) from the US. In studies with available sex and age information, participants were mostly female (1 031 399; 82.7%) and had a mean (SD) age of 59.3 (12.8) years. The pooled rate of prolonged opioid use after surgery was 6.7% (95% CI, 4.5%-9.8%) but decreased to 1.2% (95% CI, 0.4%-3.9%) in restricted analyses involving only opioid-naive participants at baseline. The risk factors with the strongest associations with prolonged opioid use included preoperative use of opioids (OR, 5.32; 95% CI, 2.94-9.64) or illicit cocaine (OR, 4.34; 95% CI, 1.50-12.58) and a preoperative diagnosis of back pain (OR, 2.05; 95% CI, 1.63-2.58). No significant differences were observed with various study-level factors, including a comparison of major vs minor surgical procedures (pooled rate: 7.0%; 95% CI, 4.9%-9.9% vs 11.1%; 95% CI, 6.0%-19.4%; P = .20). Across all of our analyses, there was substantial variability because of heterogeneity instead of sampling error.

CONCLUSIONS AND RELEVANCE

The findings suggest that prolonged opioid use after surgery may be a substantial burden to public health. It appears that strategies, such as proactively screening for at-risk individuals, should be prioritized.

Standardized, Patient-specific, Postoperative Opioid Prescribing After Inpatient Orthopaedic Surgery

BACKGROUND

Opioid-related mortality has increased over the past 2 decades, leading to the recognition of a nationwide opioid epidemic and prompting physicians to reexamine their opioid prescribing practices. At our institutions, we had no protocol for prescribing opioids upon discharge after inpatient orthopaedic surgery, resulting in inconsistent and potentially excessive prescribing. Here, we report the results of the implementation of a patient-specific protocol using an opioid taper calculator to standardize opioid prescribing at discharge after inpatient orthopaedic surgery.

METHODS

The opioid taper calculator is a tool that creates a patient-specific opioid taper based on each patient's 24-hour predischarge opioid utilization. We implemented this taper for patients discharged after inpatient orthopaedic surgery at our two institutions (Boston Medical Center and Lahey Hospital and Medical Center-Burlington Campus). We compared discharge opioid quantities between orthopaedic patients postimplementation and quantities prescribed preimplementation. We also compared discharge opioid quantities between orthopaedic and nonorthopaedic surgical services over the same time period.

RESULTS

Nine-months postimplementation, a patient-specific taper was used in 74% of eligible discharges, resulting in a 24% reduction in opioids prescribed at discharge, along with a 35% reduction in variance. Over the same time frame, a smaller reduction (9%) was seen in the opioids prescribed at discharge by nonorthopaedic services. The most notable reductions were seen after total joint arthroplasty and spinal fusions. Despite this reduction, most patients (65%) reported receiving sufficient opioids, and no substantial change was observed in 30-day postdischarge opioid prescription refills after versus before protocol implementation (1.58 versus 1.71 fills per discharge).

DISCUSSION

Using the opioid taper calculator, a patient-specific taper can be successfully used to standardize opioid prescribing at discharge after inpatient orthopaedic surgery without a substantial risk of underprescription.

LEVEL OF EVIDENCE

Level II.

Implementation of a patient-specific tapering protocol at discharge decreases total opioid dose prescribed for 6 weeks after elective primary spine surgery

Background and objectives

At our institution, we developed an individualized discharge opioid prescribing and tapering protocol for joint replacement patients and implemented the same protocol for neurosurgical spine patients. We then tested the hypothesis that this protocol will decrease the oral morphine milligram equivalent (MME) dose of opioid prescribed postdischarge after elective primary spine surgery.

Methods

In this retrospective cohort study, we identified all consecutive elective primary spine surgery cases 1 year before and after introduction of the protocol. This protocol used the patient’s prior 24-hour inpatient opioid consumption to determine discharge opioid pill count and tapering schedule. The primary outcome was total opioid dose prescribed in oral MME from discharge through 6 weeks. Secondary outcomes included in-hospital opioid consumption in MME, hospital length of stay, MME prescribed at discharge, opioid refills, and rates of minor and major adverse events.

Results

Eighty-three cases comprised the final sample (45 preintervention and 38 postintervention). There were no differences in baseline characteristics. The total oral MME (median (IQR)) from discharge through 6 weeks postoperatively was 900 (420–1440) preintervention compared with 300 (112–806) postintervention (p<0.01, Mann-Whitney U test), and opioid refill rates were not different between groups. There were no differences in other outcomes.

Conclusions

This patient-specific prescribing and tapering protocol effectively decreases the total opioid dose prescribed for 6 weeks postdischarge after elective primary spine surgery. Our experience also demonstrates the potential generalizability of this protocol, which was originally designed for joint replacement patients, to other surgical populations.

American Society for Enhanced Recovery and Perioperative Quality Initiative-4 Joint Consensus Statement on Persistent Postoperative Opioid Use: Definition, Incidence, Risk Factors, and Health Care System Initiatives

Persistent postoperative opioid use is thought to contribute to the ongoing opioid epidemic in the United States. However, efforts to study and address the issue have been stymied by the lack of a standard definition, which has also hampered efforts to measure the incidence of and risk factors for persistent postoperative opioid use. The objective of this systematic review is to (1) determine a clinically relevant definition of persistent postoperative opioid use, and (2) characterize its incidence and risk factors for several common surgeries. Our approach leveraged a group of international experts from the Perioperative Quality Initiative-4, a consensus-building conference that included representation from anesthesiology, surgery, and nursing. A search of the medical literature yielded 46 articles addressing persistent postoperative opioid use in adults after arthroplasty, abdominopelvic surgery, spine surgery, thoracic surgery, mastectomy, and thoracic surgery. In opioid-naïve patients, the overall incidence ranged from 2% to 6% based on moderate-level evidence. However, patients who use opioids preoperatively had an incidence of >30%. Preoperative opioid use, depression, factors associated with the diagnosis of substance use disorder, preoperative pain, and tobacco use were reported risk factors. In addition, while anxiety, sex, and psychotropic prescription are associated with persistent postoperative opioid use, these reports are based on lower level evidence. While few articles addressed the health policy or prescriber characteristics that influence persistent postoperative opioid use, efforts to modify prescriber behaviors and health system characteristics are likely to have success in reducing persistent postoperative opioid use.

Evaluation of opioid discontinuation after non-orthopaedic surgery among chronic opioid users: a population-based cohort study

BACKGROUND

Many patients use opioids chronically before surgery; it is unclear if surgery alters the likelihood of ongoing opioid consumption in these patients.

METHODS

We performed a population-based matched cohort study of adults in Ontario, Canada undergoing one of 16 non-orthopaedic surgical procedures and who were chronically using opioids, defined as (1) an opioid prescription that overlapped the index date and (2) either a total of 120 or more cumulative calendar days of filled opioid prescriptions, or 10 or more prescriptions filled in the prior year. Each surgical patient was matched based on age, sex, Charlson comorbidity index, and daily preoperative opioid dose to three non-surgical patients who were also chronic opioid users. The primary outcome was time to opioid discontinuation.

RESULTS

The cohort included 4755 surgical and 14 265 matched non-surgical patients. After adjustment for sociodemographic characteristics and comorbidities, surgery was associated with an increased likelihood of opioid discontinuation (adjusted hazard ratio: 1.34, 95% confidence interval [CI]: 1.27, 1.42). Among surgical patients, factors associated with a reduced odds of discontinuation included a mean preoperative opioid dose above 90 morphine milligram equivalents (adjusted odds ratio [aOR]: 0.39; 95% CI: 0.32, 0.49) or filling a prescription for oxycodone (aOR: 0.73; 95% CI: 0.56, 0.98). Receipt of an in-patient Acute Pain Service consultation (aOR: 1.34; 95% CI: 1.06, 1.69) or residing in the highest neighbourhood income quintile (aOR: 1.35; 95% CI: 1.04, 1.79) were associated with a greater odds of opioid discontinuation.

CONCLUSIONS

For chronic opioid users, surgery was associated with an increased likelihood of discontinuation of opioids in the following year compared with non-surgical chronic opioid users.

Morphine Exacerbates Postfracture Nociceptive Sensitization, Functional Impairment, and Microglial Activation in Mice

BACKGROUND

Emerging evidence suggests that opioid use immediately after surgery and trauma may worsen outcomes. In these studies, the authors aimed to determine whether morphine administered for a clinically relevant time period (7 days) in a tibia fracture orthopedic surgery model had adverse effects on postoperative recovery.

METHODS

Mice were given morphine twice daily for 7 days after unilateral tibial fracture and intramedullary pin fixation to model orthopedic surgery and limb trauma. Mechanical allodynia, limb-specific weight bearing, gait changes, memory, and anxiety were measured after injury. In addition, spinal cord gene expression changes as well as glial activation were measured. Finally, the authors assessed the effects of a selective Toll-like receptor 4 antagonist, TAK-242, on nociceptive and functional changes after injury.

RESULTS

Tibial fracture caused several weeks of mechanical nociceptive sensitization (F(1, 216) = 573.38, P < 0.001, fracture + vehicle vs. sham + vehicle, n = 10 per group), and this change was exacerbated by the perioperative administration of morphine (F(1, 216) = 71.61, P < 0.001, fracture + morphine vs. fracture + vehicle, n = 10 per group). In additional testing, injured limb weight bearing, gait, and object location memory were worse in morphine-treated fracture mice than in untreated fracture mice. Postfracture expression levels of several genes previously associated with opioid-induced hyperalgesia, including brain-derived neurotrophic factor and prodynorphin, were unchanged, but neuroinflammation involving Toll-like receptor 4 receptor-expressing microglia was observed (6.8 ± 1.5 [mean ± SD] cells per high-power field for fracture + vehicle vs. 12 ± 2.8 fracture + morphine, P < 0.001, n = 8 per /group). Treatment with a Toll-like receptor 4 antagonist TAK242 improved nociceptive sensitization for about 2 weeks in morphine-treated fracture mice (F(1, 198) = 73.36, P < 0.001, fracture + morphine + TAK242 vs. fracture + morphine, n = 10 per group).

CONCLUSIONS

Morphine treatment beginning at the time of injury impairs nociceptive recovery and other outcomes. Measures preventing glial activation through Toll-like receptor 4 signaling may reduce the adverse consequences of postoperative opioid administration.

Efficacy of Epidural Dexamethasone Combined with Intrathecal Nalbuphine in Lower Abdominal Oncology Operations

Background:

Dragging pain during lower abdominal surgeries under intrathecal anesthesia is a common problem. Epidural steroid seemed to be effective in reducing intra and postoperative pain. Kappa receptor agonist like nalbuphine helps in reduction of visceral pain. Hence, this study was designed to detect the efficacy of epidural steroid dexamethasone with intrathecal Kappa opioid as a sole anesthetic technique in patients subjected to lower abdominal oncology operations.

Patients and Methods:

Patients were randomly allocated into two groups; epidural placebo group–control group (Group P) – Intrathecal injection of 20 μg fentanyl followed by intrathecal injection of (15 mg) of hyperbaric bupivacaine 0.5%, then (epidural injection placebo 15 mL volume of sterile saline 0.9%). Epidural dexamethasone group–study group (Group D) – Intrathecal injection of 0.6 mg nalbuphine followed by intrathecal injection of (15 mg) of hyperbaric bupivacaine 0.5% then (epidural injection of 8 mg dexamethasone in 15 mL total volume using sterile saline 0.9%).

Results:

Group D recorded significantly longer times to 1^st analgesic request, sensory regression to S₁ and modified bromage Score 0 with significant lower number of patients that had abdominal dragging pain in comparison with Group P. Visual analog score in the first four postoperative hours, total postoperative nalbuphine dose in 1^st 24 h and incidence of nausea and vomiting were significantly lower in Group D. Heart rate and mean arterial pressure were comparable in both groups. Postoperative headache incidence was comparable in both groups. Both patient and surgeon satisfaction were significantly higher in Group D compared to Group P.

Conclusion:

Combined epidural dexamethasone with intrathecal nalbuphine as a sole anesthetic technique during lower abdominal oncology operations could be an efficient anesthetic technique that offered better block characteristics, with more analgesia and as a result it gained better patient and surgeon satisfaction.

Effect of Perioperative Gabapentin on Postoperative Pain Resolution and Opioid Cessation in a Mixed Surgical Cohort: A Randomized Clinical Trial

Importance

Guidelines recommend using gabapentin to decrease postoperative pain and opioid use, but significant variation exists in clinical practice.

Objective

To determine the effect of perioperative gabapentin on remote postoperative time to pain resolution and opioid cessation.

Design, Setting, and Participants

A randomized, double-blind, placebo-controlled trial of perioperative gabapentin was conducted at a single-center, tertiary referral teaching hospital. A total of 1805 patients aged 18 to 75 years scheduled for surgery (thoracotomy, video-assisted thoracoscopic surgery, total hip replacement, total knee replacement, mastectomy, breast lumpectomy, hand surgery, carpal tunnel surgery, knee arthroscopy, shoulder arthroplasty, and shoulder arthroscopy) were screened. Participants were enrolled from May 25, 2010, to July 25, 2014, and followed up for 2 years postoperatively. Intention-to-treat analysis was used in evaluation of the findings.

Interventions

Gabapentin, 1200 mg, preoperatively and 600 mg, 3 times a day postoperatively or active placebo (lorazepam, 0.5 mg) preoperatively followed by inactive placebo postoperatively for 72 hours.

Main Outcomes and Measures

Primary outcome was time to pain resolution (5 consecutive reports of 0 of 10 possible levels of average pain at the surgical site on the numeric rating scale of pain). Secondary outcomes were time to opioid cessation (5 consecutive reports of no opioid use) and the proportion of participants with continued pain or opioid use at 6 months and 1 year.

Results

Of 1805 patients screened for enrollment, 1383 were excluded, including 926 who did not meet inclusion criteria and 273 who declined to participate. Overall, 8% of patients randomized were lost to follow-up. A total of 202 patients were randomized to active placebo and 208 patients were randomized to gabapentin in the intention-to-treat analysis (mean [SD] age, 56.7 [11.7] years; 256 (62.4%) women and 154 (37.6%) men). Baseline characteristics of the groups were similar. Perioperative gabapentin did not affect time to pain cessation (hazard ratio [HR], 1.04; 95% CI, 0.82-1.33; P = .73) in the intention-to-treat analysis. However, participants receiving gabapentin had a 24% increase in the rate of opioid cessation after surgery (HR, 1.24; 95% CI, 1.00-1.54; P = .05). No significant differences were noted in the number of adverse events as well as the rate of medication discontinuation due to sedation or dizziness (placebo, 42 of 202 [20.8%]; gabapentin, 52 of 208 [25.0%]).

Conclusions and Relevance

Perioperative administration of gabapentin had no effect on postoperative pain resolution, but it had a modest effect on promoting opioid cessation after surgery. The routine use of perioperative gabapentin may be warranted to promote opioid cessation and prevent chronic opioid use. Optimal dosing and timing of perioperative gabapentin in the context of specific operations to decrease opioid use should be addressed in further research.

Trial Registration

clinicaltrials.gov Identifier: NCT01067144.

Pain Management Associated with Total Joint Arthroplasty: A Primer

This primer presents a synopsis of pain management strategies associated with total joint arthroplasty. Patients considering total joint arthroplasty often experience moderate to severe pain, which places them at risk of opioid abuse or addiction. Currently, the best practice strategies involve the development of individualized multimodal perioperative approaches to pain management. These practices include prescribing opioids at their lowest dose and for the shortest duration necessary to control symptoms, with close monitoring of common adverse effects. Implementing these practices is essential to battling the ongoing opioid crisis in the US.

Battlefield Acupuncture and Physical Therapy Versus Physical Therapy Alone After Shoulder Surgery

Objective: Opioid pain medications are commonly prescribed postsurgically for pain. Few studies have investigated the effects of Battlefield Acupuncture (BFA) on postsurgical pain and pain-medication use. To date, no studies have investigated BFA's effectiveness for reducing postoperative shoulder pain and pain-medication use post surgery. The objective of this study was to determine if adding BFA to a rehabilitation protocol was effective for reducing pain and use of prescribed pain medications, compared to that protocol alone after shoulder surgery. Materials and Methods: Forty Department of Defense beneficiaries (ages 17-55) were randomized to either a standard-of-care group or a standard-of-care + BFA group prior to shoulder surgery. The standard BFA protocol was administered with semipermanent acupuncture needles emplaced on the subjects' ears for 3-5 days within 24 hours after shoulder surgery in an outpatient physical therapy setting. BFA was reapplied, as needed, up to 6 weeks postsurgically for pain management in the intervention group. The primary outcomes were visual analogue scale (VAS) pain rating and daily pain medication use by each subject. Secondary outcome measures were the Global Rating of Change and Patient Specific Functional scale. Outcome measures were obtained at 24 hours, 72 hours, 1 week, 2 weeks, and 6 weeks post surgery. Results: Significant differences in average and worst VAS pain change scores were noted between baseline and 7 days (P < 0.05). The main effect for time was significant (average and worst VAS pain) at all timepoints (P < 0.05), without time-group interactions seen. No significant differences between the groups in pain-medication use were observed (P > 0.05) Conclusions: BFA reduced postsurgical shoulder pain significantly between the groups' average and worst pain change scores between baseline and 7 days despite similar opioid and nonsteroidal anti-inflammatory drug use between the groups.

Impact of an Opioid Safety Initiative on Patients Undergoing Total Knee Arthroplasty

Editor’s Perspective

What We Already Know about This Topic

What This Article Tells Us That Is New

Background

The Opioid Safety Initiative decreased high-dose prescriptions across the Veterans Health Administration. This study sought to examine the impact of this intervention (i.e., the Opioid Safety Initiative) on pain scores and opioid prescriptions in patients undergoing total knee arthroplasty.

Methods

This was an ecological study of group-level data among 700 to 850 patients per month over 72 consecutive months (January 2010 to December 2015). The authors examined characteristics of cohorts treated before versus after rollout of the Opioid Safety Initiative (October 2013). Each month, the authors aggregated at the group-level the differences between mean postoperative and preoperative pain scores for each patient (averaged over 6-month periods), and measured proportions of patients (per 1,000) with opioid (and nonopioid) prescriptions for more than 3 months in 6-month periods, preoperatively and postoperatively. The authors compared postintervention trends versus trends forecasted based on preintervention measures.

Results

After the Opioid Safety Initiative, patients were slightly older and sicker, but had lower mortality rates (postintervention n = 28,509 vs. preintervention n = 31,547). Postoperative pain scores were slightly higher and the decrease in opioid use was statistically significant, i.e., 871 (95% CI, 474 to 1,268) fewer patients with chronic postoperative prescriptions. In time series analyses, mean postoperative minus preoperative pain scores had increased from 0.65 to 0.81, by 0.16 points (95% CI, 0.05 to 0.27). Proportions of patients with chronic postoperative and chronic preoperative opioid prescriptions had declined by 20% (n = 3,355 vs. expected n = 4,226) and by 13% (n = 5,861 vs. expected n = 6,724), respectively. Nonopioid analgesia had increased. Sensitivity analyses confirmed all findings.

Conclusions

A system-wide initiative combining guideline dissemination with audit and feedback was effective in significantly decreasing opioid prescriptions in populations undergoing total knee arthroplasty, while minimally impacting pain scores.

Elective Shoulder Surgery in the Opioid Naïve: Rates of and Risk Factors for Long-term Postoperative Opioid Use

BACKGROUND

Little is known regarding the rates and risk factors for long-term postoperative opioid use among opioid-naïve patients undergoing elective shoulder surgery.

PURPOSE

To identify (1) the proportion of opioid-naïve patients undergoing elective shoulder surgery, (2) the rates of postoperative opioid use among these patients, and (3) the risk factors associated with long-term postoperative opioid use.

STUDY DESIGN

Cohort study; Level of evidence, 3.

METHODS

A retrospective review of a private administrative claims database was performed to identify those individuals who underwent elective shoulder surgery between 2007 and 2015. "Opioid-naïve" patients were identified as those patients who had not filled an opioid prescription in the 180 days before the index surgery. Within this subgroup, we tracked postoperative opioid prescription refill rates and used a logistic regression to identify patient variables that were predictive for long-term opioid use, which we defined as continued opioid refills beyond 180 days after surgery. Results were reported as odds ratios (ORs).

RESULTS

Over the study period, 79,287 patients were identified who underwent elective shoulder surgery, of whom 79.5% were opioid naïve. Among opioid-naïve patients, the rate of postoperative opioid use declined over time, and 14.6% of patients were still using opioids beyond 180 days. The greatest proportion of opioid-naïve patients still filling opioid prescriptions beyond 180 days postoperatively was seen after open rotator cuff repair (20.9%), whereas arthroscopic labral repair had the lowest proportion (9.8%). Overall, a history of alcohol abuse (OR 1.56), a history of depression (OR 1.46), a history of anxiety (OR, 1.31), female sex (OR, 1.11), and higher Charlson Comorbidity Index (OR 1.02) had the most significant influence on the risk for long-term opioid use among opioid naïve patients.

CONCLUSIONS

Most patients were opioid naïve before elective shoulder surgery; however, among opioid-naïve patients, 1 in 7 patients were still using opioids beyond 180 days after surgery. Among all variables, a history of mental illness most significantly increased the risk of long-term opioid use after elective shoulder surgery.

Association of Prescribed Opioids With Increased Risk of Community-Acquired Pneumonia Among Patients With and Without HIV

IMPORTANCE

Some opioids are known immunosuppressants; however, the association of prescribed opioids with clinically relevant immune-related outcomes is understudied, especially among people living with HIV.

OBJECTIVE

To assess the association of prescribed opioids with community-acquired pneumonia (CAP) by opioid properties and HIV status.

DESIGN, SETTING, AND PARTICIPANTS

This nested case-control study used data from patients in the Veterans Aging Cohort Study (VACS) from January 1, 2000, through December 31, 2012. Participants in VACS included patients living with and without HIV who received care in Veterans Health Administration (VA) medical centers across the United States. Patients with CAP requiring hospitalization (n = 4246) were matched 1:5 with control individuals without CAP (n = 21 146) by age, sex, race/ethnicity, length of observation, and HIV status. Data were analyzed from March 15, 2017, through August 8, 2018.

EXPOSURES

Prescribed opioid exposure during the 12 months before the index date was characterized by a composite variable based on timing (none, past, or current); low (<20 mg), medium (20-50 mg), or high (>50 mg) median morphine equivalent daily dose; and opioid immunosuppressive properties (yes vs unknown or no).

MAIN OUTCOME AND MEASURE

CAP requiring hospitalization based on VA and Centers for Medicare & Medicaid data.

RESULTS

Among the 25 392 VACS participants (98.9% male; mean [SD] age, 55 [10] years), current medium doses of opioids with unknown or no immunosuppressive properties (adjusted odds ratio [AOR], 1.35; 95% CI, 1.13-1.62) and immunosuppressive properties (AOR, 2.07; 95% CI, 1.50-2.86) and current high doses of opioids with unknown or no immunosuppressive properties (AOR, 2.07; 95% CI, 1.50-2.86) and immunosuppressive properties (AOR, 3.18; 95% CI, 2.44-4.14) were associated with the greatest CAP risk compared with no prescribed opioids or any past prescribed opioid with no immunosuppressive (AOR, 1.24; 95% CI, 1.09-1.40) and immunosuppressive properties (AOR, 1.42; 95% CI, 1.21-1.67), especially with current receipt of immunosuppressive opioids. In stratified analyses, CAP risk was consistently greater among people living with HIV with current prescribed opioids, especially when prescribed immunosuppressive opioids (eg, AORs for current immunosuppressive opioids with medium dose, 1.76 [95% CI, 1.20-2.57] vs 2.33 [95% CI, 1.60-3.40]).

CONCLUSIONS AND RELEVANCE

Prescribed opioids, especially higher-dose and immunosuppressive opioids, are associated with increased CAP risk among persons with and without HIV.

Preoperative opioid use and postoperative pain associated with surgical readmissions

BACKGROUND

The extent of preoperative opioid utilization and the relationship with pain-related readmissions are not well understood.

METHODS

VA Surgical Quality Improvement Program data on general, vascular, and orthopedic surgeries (2007-2014) were merged with pharmacy data to evaluate preoperative opioid use and pain-related readmissions. Opioid use in the 6-month preoperative period was categorized as none, infrequent, frequent, and daily.

RESULTS

In the six-month preoperative period, 65.7% had no opioid use, 16.7% had infrequent use, 6.3% frequent use, and 11.4% were daily opioid users. Adjusted odds of pain-related readmission were higher for opioid-exposed groups vs the opioid-naïve group: infrequent (OR 1.17; 95% CI:1.04-1.31), frequent (OR 1.28; 95% CI:1.08-1.52), and daily (OR 1.49; 95% CI:1.27-1.74). Among preoperative opioid users, those with a pain-related readmission had higher daily preoperative oral morphine equivalents (mean 44.5 vs. 36.1, p < 0.001).

CONCLUSIONS

Patients using opioids preoperatively experienced higher rates of pain-related readmissions, which increased with frequency and dosage of opioid exposure.

Patient education and engagement in postoperative pain management decreases opioid use following knee replacement surgery

OBJECTIVE

Effects of patient education on perioperative analgesic utilization are not well defined. We designed a simple pain management educational card for total knee arthroplasty (TKA) patients and retrospectively reviewed clinical data before and after implementation to test the hypothesis that more informed patients will use less opioid.

METHODS

With IRB approval, we analyzed clinical data collected perioperatively on all TKA patients one month before (PRE) and one month after (POST) card implementation. The card was designed using a modified Delphi method; the front explained all analgesic medications and the Defense and Veterans Pain Rating Scale was on the back. The primary outcome was total opioid dosage in morphine milligram equivalents (MME) for the first two postoperative days. Secondary outcomes included daily opioid usage, pain scores, ambulation distance, hospital length of stay and use of antiemetics.

RESULTS

There were 20 patients in each group with no differences in baseline characteristics. Total two-day MME [median (10th-90th percentiles)] was 71 (32-285) for PRE and 38 (1-117) for POST (p = 0.001). There were no other differences.

CONCLUSION

Educating TKA patients in multimodal pain management using a simple tool decreases opioid usage.

PRACTICE IMPLICATIONS

Empowering TKA patients with education can reduce opioid use perioperatively.

Prescription Opioid Use Before and After Hip Arthroscopy: A Caution to Prescribers

PURPOSE

To determine pre- and postoperative opioid utilization while identifying risk factors for prolonged postoperative opioid use following hip arthroscopy.

METHODS

All patients undergoing hip arthroscopy between 2007 and the second quarter of 2016 were identified within the Humana Inc. administrative claims database. Chronic preoperative opioid utilization was defined as filling of any opioid prescription 1 to 3 months before surgery, whereas acute preoperative opioid utilization was defined as filling any opioid prescription within 1 month of surgery. Rates of pre- and postoperative opioid utilization were calculated, and patient demographic characteristics and medical conditions associated with pre- and postoperative opioid utilization were identified.

RESULTS

Of the 1,208 patients undergoing hip arthroscopy, chronic and acute preoperative opioid utilization was observed in 24.9% and 17.3% of patients, respectively. Chronic preoperative opioid utilization was more frequently observed in obese (P < .001) patients, those ≥50 years of age (P = .002), and those with preexisting anxiety and/or depression (P < .001). In multivariate analysis, chronic preoperative opioid utilization was the strongest predictor of opioid prescription filling at 3, 6, 9, and 12 months postoperatively (odds ratio at 3 months, 18.60, 95% confidence interval, 12.41 to 28.55), whereas preexisting anxiety and/or depression and obesity were additionally identified as predictors of prolonged postoperative opioid utilization.

CONCLUSIONS

Chronic preoperative opioid utilization before hip arthroscopy is common at 24.9%. The high rate of chronic preoperative opioid utilization is particularly important considering that chronic preoperative opioid utilization is the strongest predictor of continued postoperative opioid prescription filling out to 12 months postoperatively.

LEVEL OF EVIDENCE

Level IV, retrospective case series.

Acute Pain Is Associated With Chronic Opioid Use After Total Knee Arthroplasty

BACKGROUND AND OBJECTIVES

Pain scores are routinely reported in clinical practice, and we wanted to examine whether this routinely measured, patient-reported variable provides prognostic information, especially with regard to chronic opioid use, after taking preoperative and perioperative variables into account in a preoperative opioid user population.

METHODS

In 32,874 preoperative opioid users undergoing primary total knee arthroplasty at Veterans Affairs hospitals between 2010 and 2015, we compared preoperative and perioperative characteristics in patients reporting lower versus higher acute pain (scores ≤4/10 vs >4/10 averaged over days 1-3). We calculated the propensity for lower acute pain based on all available data. After 1:1 propensity score matching, to identify similar patients differing only in acute pain, we contrasted rates of chronic significant opioid use (mean >30 mg/d in morphine equivalents) beyond postoperative month 3, discharge prescriptions, and changes in postoperative versus preoperative dose categories. Sensitivity analysis examined associations with dose escalation.

RESULTS

Rates of chronic significant opioid use (21% overall) differed in patients with lower versus higher acute pain (36% vs 64% of the overall cohort). After propensity matching (total n = 20,926 patients) and adjusting for all significant factors, lower acute pain was associated with less chronic significant opioid use (rates 12% vs 16%), smaller discharge prescriptions (ie, supply <30 days and daily oral morphine equivalent <30 mg/d), and more reduction in dose, all P < 0.001. In sensitivity analysis, dose escalation was 15% less likely with lower acute pain (odds ratio, 0.85; 95% confidence interval, 0.80-0.91).

CONCLUSIONS

Acute pain predicts chronic opioid use. Prospective studies of efforts to reduce acute pain, in terms of long-term effects, are needed.