Emergency room resource utilization by patients with low-back pain

Emergency Department Management of Low Back Pain: A Comparative Review of Guidelines and Practices

This narrative review examines the current best practices and guidelines for integrating pharmacologic interventions, imaging, and physiotherapy in the management of low back pain. The review also explores how patient factors such as age, sex, comorbidities, and prevalent pathologies/diagnoses influence the choice and effectiveness of these treatment approaches.

Associations Between Management Pathway and Opioid Prescriptions for Patients Entering the Emergency Department With Neck and Back Pain

Objective

To determine associations between post-emergency department (ED) management pathways and downstream opioid prescriptions in patients seeking care for incident neck and/or back pain.

Patients and Methods

We identified patients seeking first-time ED care for neck and/or back pain from January 1, 2013, through November 6, 2017. We reported demographic characteristics and opioid prescriptions across management pathways using descriptive statistics and assessed the relative risk of any opioid prescription 12 months post-ED visit among 5 different post-ED management pathways using Poisson regression adjusted for patient demographic characteristics.

Results

Within 12 months after the index ED visit, 58.0% (n=10,949) were prescribed an opioid, with most patients prescribed an opioid within the first week (average daily morphine milligram equivalents of 6.8 mg (SD 9.6 mg). The morphine milligram equivalents decreased to 0.7 mg (SD 8.2 mg) by week 4 and remained consistently less than 1 mg between week 4 and 12 months. Compared with the ED to primary care provider pathway, the relative risk of opioid prescription between 7 days and 12 months after the index ED visit was similar for the ED to physical therapy pathway, higher for both the ED to hospital admission or repeat ED visit pathway (30% increase; relative risk (RR), 1.3; 95% CI, 1.17-1.44) and the ED to specialist pathway (19% increase; RR, 1.19; 95% CI, 1.07-1.33), and lower in the ED with no follow-up visits pathway (41% decrease; RR, 0.59; 95% CI, 0.54-0.65).

Conclusion

In general, more conservative care was associated with lower opioid prescription rates, and escalated care was associated with higher opioid prescription rates.

First Provider Seen for an Acute Episode of Low Back Pain Influences Subsequent Health Care Utilization

OBJECTIVE

Costs associated with low back pain (LBP) continue to rise. Despite numerous clinical practice guidelines, the evaluation and treatments for LBP are variable and largely depend on the individual provider. As yet, little attention has been given to the first choice of provider. Early research indicates that the choice of first provider and the timing of interventions for LBP appear to influence utilization. We sought to examine the association between the first provider seen and health care utilization.

METHODS

Using 2015-2018 data from a large insurer, this retrospective analysis focused on patients (29,806) seeking care for a new episode of LBP. The study identified the first provider chosen and examined the following year of medical utilization. Cox proportional hazards models were calculated using inverse probability weighting on propensity scores to evaluate the time to event and the relationship to the first choice of provider.

RESULTS

The primary outcome was the timing and use of health care resources. Total health care use was lowest in those who first sought care with chiropractic care or physical therapy. Highest health care use was seen in those patients who chose the emergency department.

CONCLUSION

Overall, there appears to be an association between the first choice of provider and future health care use. Chiropractic care and physical therapy provide nonpharmacologic and nonsurgical, guideline-based interventions. The use of physical therapists and chiropractors as entry points into the health system appears related to a decrease in immediate and long-term use of health resources. This study expands the existing body of literature and provides a compelling case for the influence of the first provider on an acute episode of LBP.

IMPACT

The first provider seen for an acute episode of LBP influences immediate treatment decisions, the trajectory of a specific patient episode, and future health care choices in the management of LBP.

Global prevalence of hospital admissions for low back pain: a systematic review with meta-analysis

OBJECTIVES

To determine the proportion of low back pain presentations that are admitted to hospital from the emergency department (ED), the proportion of hospital admissions due to a primary diagnosis of low back pain and the mean hospital length of stay (LOS), globally.

METHODS

We searched MEDLINE, CINAHL, EMBASE, Web of Science, PsycINFO and LILACS from inception to July 2022. Secondary data were retrieved from publicly available government agency publications and international databases. Studies investigating admitted patients aged >18 years with a primary diagnosis of musculoskeletal low back pain and/or lumbosacral radicular pain were included.

RESULTS

There was high heterogeneity in admission rates for low back pain from the ED, with a median of 9.6% (IQR 3.3-25.2; 9 countries). The median percentage of all hospital admissions that were due to low back pain was 0.9% (IQR 0.6-1.5; 30 countries). The median hospital LOS across 39 countries was 6.2 days for 'dorsalgia' (IQR 4.4-8.6) and 5.4 days for 'intervertebral disc disorders' (IQR 4.1-8.4). Low back pain admissions per 100 000 population had a median of 159.1 (IQR 82.6-313.8). The overall quality of the evidence was moderate.

CONCLUSION

This is the first systematic review with meta-analysis summarising the global prevalence of hospital admissions and hospital LOS for low back pain. There was relatively sparse data from rural and regional regions and low-income countries, as well as high heterogeneity in the results.

Management of patients with low back pain in the emergency department: Is it feasible to follow evidence-based recommendations?

OBJECTIVE

Low back pain is frequently seen in patients visiting the ED, but many patients receive medical care with no demonstrable benefits. We studied the clinical characteristics of patients visiting two EDs in Santiago, Chile, and their management to evaluate how it adheres to evidence-based recommendations.

METHODS

We studied 519 patients and retrieved their demographic and clinical data, imaging testing and treatments. We determined the effect of sex, age, time from initial symptoms, pain measured with the visual analogue scale, presence of nerve radiation and the presence of red flags and neurological impairment on image testing and the management received.

RESULTS

Mean age was 43.8 years; 57.8% were females. Females presented more often red flags (7.3 vs 3%, P = 0.04) and worse pain (visual analogue scale = 7 vs 6, P = 0.04) than males. Imagings were performed in 18.9% of patients; they were more frequently performed in patients with neurological impairment (P = 0.03) and red flags (P = 0.01). Intravenous non-opioids were administered in 25.6%; opioids were administered in 40.1%. Median time in the ED was 91 min (range 18-591); 16 (3.08%) patients were admitted. Age (odds ratio [OR] 1.04 [1.03-1.05], P < 0.01) and red flags (OR 4.9 [1.60-20.08], P < 0.01) influenced imaging testing; pain intensity influenced opioid use (OR 1.6 [1.29-1.95], P < 0.01), hospital admissions (1.95 [1.14-3.33], P < 0.01) and time in the ED (β = 0.5, P < 0.01).

CONCLUSION

Older age, the presence of red flags and pain intensity influenced the management of patients with low back pain in the ED. Future strategies should emphasise avoiding costly and ineffective management in these patients.

Disparities in Outcomes by Insurance Payer Groups for Patients Undergoing Anterior Cervical Discectomy and Fusion

STUDY DESIGN

Retrospective, observational study of clinical outcomes at a single institution.

OBJECTIVE

To compare postoperative complication and readmission rates of payer groups in a cohort of patients undergoing anterior cervical discectomy and fusion (ACDF).

SUMMARY OF BACKGROUND DATA

Studies examining associations between primary payer and outcomes in spine surgery have been equivocal.

METHODS

Patients at Mount Sinai having undergone ACDF from 2008 to 2016 were queried and assigned to one of five insurance categories: uninsured, managed care, commercial indemnity insurance, Medicare, and Medicaid, with patients in the commercial indemnity group serving as the reference cohort. Multivariable logistic regression equations for various outcomes with the exposure of payer were created, controlling for age, sex, American Society of Anesthesiology Physical Status Classification (ASA Class), the Elixhauser Comorbidity Index, and number of segments fused. A Bonferroni correction was utilized, such that alpha = 0.0125.

RESULTS

Two thousand three hundred eighty seven patients underwent ACDF during the time period. Both Medicare (P < 0.0001) and Medicaid (P < 0.0001) patients had higher comorbidity burdens than commercial patients when examining ASA Class. Managed care (2.86 vs. 2.72, P = 0.0009) and Medicare patients (2.99 vs. 2.72, P < 0.0001) had more segments fused on average than commercial patients. Medicaid patients had higher rates of prolonged extubation (odds ratio [OR]: 4.99; 95% confidence interval [CI]: 1.13-22.0; P = 0.007), and Medicare patients had higher rates of prolonged length of stay (LOS) (OR: 2.44, 95% CI: 1.13-5.27%, P = 0.004) than the commercial patients. Medicaid patients had higher rates of 30- (OR: 4.12; 95% CI: 1.43-11.93; P = 0.0009) and 90-day (OR: 3.28; 95% CI: 1.34-8.03; P = 0.0009) Emergency Department (ED) visits than the commercial patients, and managed care patients had higher rates of 30-day readmission (OR: 3.41; 95% CI: 1.00-11.57; P = 0.0123).

CONCLUSION

Medicare and Medicaid patients had higher rates of prolonged LOS and postoperative ED visits, respectively, compared with commercial patients.

LEVEL OF EVIDENCE

3.

Hospital admission and associated factors among individuals presenting to healthcare facilities for low back pain in Ethiopia

AIM

The aim of this paper is to analyze hospital admission and associated factors following presentation to healthcare facilities for low back pain (LBP) in Ethiopia.

METHODS

A population-based cross-sectional study was conducted between June and November 2018 in South-west Shewa zone of Oromia regional state. Data were collected by face-to-face interviews of adults (≥18 years) with self-reported LBP using a newly developed and validated instrument. All the statistical analyses of (n = 543) individuals with a 1-year history of presentation to healthcare facilities for LBP were performed using R version 3.5.1. The log-binomial regression model was fitted and prevalence ratios with 95% confidence intervals (CIs) were calculated to identify factors associated with hospitalization and the significance level was considered at the P value of ≤ .05.

RESULTS

The proportion of hospital admissions following presentation to healthcare facilities for LBP was 14.4%, 95% CI 11.4-17.3, with an average length of stay (LOS) 7.4 days, 95% CI 6.4-8.8. The admission rate was 18.5%, 95% CI 13.4-23.3 in females and 11.4%, 95% CI 8.0-15.1 in males. Multiple factors, such as gender, age, living conditions, residential environment, alcohol consumption status, intensity of pain, and presence of additional spinal pain, were found to be independently associated with hospitalization for LBP.

CONCLUSIONS

The burden on the individuals and the Ethiopian healthcare system as a result of LBP is evident by the rate of hospital admissions. Further evidence on LBP case referral procedures is needed to allow health policy makers to develop appropriate management strategies capable of dealing with the increasing epidemiology of LBP.

Occupational injury surveillance pyramid description and association of medical care utilization with low income among work-related injuries

BACKGROUND

A more comprehensive characterization of total work-related injury burden would ideally include all levels of medical care. Additionally, studies have suggested differential utilization of medical care among various socioeconomic groups, and it is unclear how this translates to work-related injuries.

METHODS

The 2004-2016 National Health Interview Survey data were used to estimate all levels of care utilized by the individual for each injury episode. A multivariable logistic regression model based on 2004-2014 data was developed to investigate the relationship of low income and level of medical care used by the injured worker.

RESULTS

Around 53.1% of occupational injury were exclusively treated outside of a hospital setting and never captured by hospital/emergency department data systems, which comprises 40% (3.0 million) of total missed days of work and 44% ($452 million) of total cost of lost productivity among full-time workers. Patients with work-related injuries are less likely to stay overnight in hospital compared with those with nonwork-related injuries (adjusted odds ration [aOR]: 0.6, 95% confidence interval [CI]: 0.5-0.7), however among work-related injuries, low-income patients are more likely to use medical care in a hospital setting compared with patients with income higher than poverty threshold (hospitalization: aOR: 1.9, 95% CI: 1.1-3.3; emergency room: aOR: 1.5, 95% CI: 1.1-2.0).

CONCLUSIONS

These "minor work-related injuries" exclusively treated outside hospital tend to be ignored when defining national injury prevention priorities, but this analysis indicates that such an approach fails to capture a large portion of injuries significant enough to result in missed days of work and cost of lost productivity.

Management of low back pain in Australian emergency departments

Background

To describe the diagnoses of people who present to the emergency department (ED) with low back pain (LBP), the proportion of people with a lumbar spine condition who arrived by ambulance, received imaging, opioids and were admitted to hospital; and to explore factors associated with these four outcomes.

Methods

In this retrospective study, we analysed electronic medical records for all adults presenting with LBP at three Australian EDs from January 2016 to June 2018. Outcomes included discharge diagnoses and key aspects of care (ambulance transport, lumbar spine imaging, provision of opioids, admission). We explored factors associated with these care outcomes using multilevel mixed-effects logistic regression models and reported data as ORs.

Results

There were 14 024 presentations with a ‘visit reason’ for low back pain, of which 6393 (45.6%) had a diagnosis of a lumbar spine condition. Of these, 31.4% arrived by ambulance, 23.6% received lumbar imaging, 69.6% received opioids and 17.6% were admitted to hospital. Older patients (OR 1.79, 95% CI 1.56 to 2.04) were more likely to be imaged. Opioids were less used during working hours (OR 0.81, 95% CI 0.67 to 0.98) and in patients with non-serious LBP compared with patients with serious spinal pathology (OR 1.65, 95% CI 1.07 to 2.55). Hospital admission was more likely to occur during working hours (OR 1.74, 95% CI 1.48 to 2.05) and for those who arrived by ambulance (OR 2.98, 95% CI 2.53 to 3.51).

Conclusion

Many ED presentations of LBP were not due to a lumbar spine condition. Of those that were, we noted relatively high rates of lumbar imaging, opioid use and hospital admission.

Elevated glycohemoglobin HbA1c is associated with low back pain in nonoverweight diabetics

BACKGROUND CONTEXT

Low back pain (LBP) is a common complaint in clinical practice of multifactorial origin. Although obesity has been thought to contribute to LBP primarily by altering the distribution of mechanical loads on the spine, the additional contribution of obesity-related conditions such as diabetes mellitus (DM) to LBP has not been thoroughly examined.

PURPOSE

To determine if there is a relationship between DM and LBP that is independent of body mass index (BMI) in a large cohort of adult survey participants.

STUDY DESIGN

Retrospective analysis of prospectively collected National Health and Nutrition Examination Survey (NHANES) data to characterize associations between LBP, DM, and BMI in adults subdivided into 6 subpopulations: normal weight (BMI 18.5-25), overweight (BMI 25-30), and obese (BMI >30) diabetics and nondiabetics. Diabetes was defined with glycohemoglobin A1c (HbA1c) ≥6.5%.

PATIENT SAMPLE

11,756 participants from NHANES cohort.

OUTCOME MEASURES

Percentage of LBP reported.

METHODS

LBP reported in the 1999-2004 miscellaneous pain NHANES questionnaire was the dependent variable examined. Covariates included HbA1c, BMI, age, and family income ratio to poverty as continuous variables as well as race, gender, and smoking as binary variables. Individuals were further subdivided by weight class and diabetes status. Regression and graphical analyses were performed on the study population as a whole and also on subpopulations.

RESULTS

Increasing HbA1c did not increase the odds of reporting LBP in the full cohort. However, multivariate logistic regression of the 6 subpopulations revealed that the odds of LBP significantly increased with increasing HbA1c levels in normal weight diabetics. No other subpopulations reported significant relationships between LBP and HbA1c. LBP was also significantly associated with BMI for normal weight diabetics and also for obese subjects regardless of their DM status.

CONCLUSIONS

LBP is significantly related to DM status, but this relationship is complex and may interact with BMI. These results support the concept that LBP may be improved in normal weight diabetic subjects with improved glycemic control and weight loss, and that all obese LBP subjects may benefit from improved weight loss alone.

Is establishing a specialist back pain assessment and management service in primary care a safe and effective model? Twelve-month results from the Back pain Assessment Clinic (BAC) prospective cohort pilot study

OBJECTIVES

To report on the design, implementation and evaluation of the safety and effectiveness of the Back pain Assessment Clinic (BAC) model.

DESIGN

BAC is a new, community-based specialist service for assessing and managing neck and low back pain (LBP). The BAC pilot was supported by a Victorian Department of Health and Human Services grant and was evaluated using the Victorian Innovation Reform Impact Assessment Framework (VIRIAF). Data were obtained by auditing BAC activity (22 July 2014 to 30 June 2015) and conducting surveys and interviews of patients, stakeholders and referrers.

SETTING

Tertiary and primary care.

PARTICIPANTS

Adult patients with neck and LBP referred for outpatient surgical consultation.

MAIN OUTCOME MEASURES

VIRIAF outcomes: (1) access to care; (2) appropriate and safe care; (3) workforce optimisation and integration; and (4) efficiency and sustainability.

RESULTS

A total of 522 patients were seen during the pilot. Most were referred to hospital services by general practitioners (87%) for LBP (63%) and neck pain (24%). All patients were seen within 10 weeks of referral and commenced community-based allied health intervention within 2-4 weeks of assessment in BAC. Of patients seen, 34% had medications adjusted, 57% were referred for physiotherapy, 3.2% to pain services, 1.1% to rheumatology and 1.8% for surgical review. Less MRI scans were ordered in BAC (6.4%) compared with traditional spinal surgical clinics (89.8%), which translated to a cost-saving of $52 560 over 12 months. Patient and staff satisfaction was high. There have been no patient complaints or adverse incidents.

CONCLUSION

Evaluation of the BAC pilot suggests it is a potentially safe and cost-saving alternative model of care. Results of the BAC pilot merit further evaluation to determine the potential cost-effectiveness, longer term and broader societal impact of implementing BAC more widely.

Tapentadol versus tramadol in the management of low back pain in the emergency department: Impact of use on the need for reassessments

Nontraumatic musculoskeletal disorders are the main reason for presentation to the emergency department (ED), with rachialgia (back pain) being the most common reason to request medical assessment among them. This also generates the highest demand for reassessments due to poor pain control or onset of adverse reactions to the treatment prescribed in the initial assessment.A retrospective observational study based on usual clinical practice was conducted in patients attending the ED due to low back pain during a period of 24 months. The primary objective was to determine the demand for reassessments in the ED by these patients in the following 30 days, according to the type of therapeutic approach used in the initial assessment.A total of 732 patients who requested medical assessment due to back pain in the ED of our hospital were analyzed, 91 of whom were treated with tapentadol whereas 641 received another treatment. In the first month after the initial assessment, reassessments were less common in the tapentadol group; this difference was significant from days 8 to 15 (P = 0.001, odds ratio [OR] 0.252 with 95% confidence interval [CI] 0.100-0.635) and days 15 to 30 (P < 10, OR 0.277 with 95% CI 0.136-0.563). Patients who received tapentadol also had a better clinical evolution of pain compared to those who did not receive it (P < 10) and to those who received tramadol (P < 10).In this study in patients with back pain, tapentadol shows clear advantages over the other analgesics analyzed, in terms of pain control and less need for reassessments.