Investigating Associations Between Access to Rheumatology Care, Treatment, Continuous Care, and Healthcare Utilization and Costs Among Older Individuals With Rheumatoid Arthritis.

OBJECTIVE: To examine the association between rheumatologist access, early treatment, and ongoing care of older-onset rheumatoid arthritis (RA) and healthcare utilization and costs following diagnosis. METHODS: We analyzed data from a population-based inception cohort of individuals aged > 65 years with RA in Ontario, Canada, diagnosed between 2002 and 2014 with follow-up to 2019. We assessed 4 performance measures in the first 4 years following diagnosis, including access to rheumatology care, yearly follow-up, timely treatment, and ongoing treatment with a disease-modifying antirheumatic drug. We examined annual healthcare utilization, mean direct healthcare costs, and whether the performance measures were associated with costs in year 5. RESULTS: A total of 13,293 individuals met inclusion criteria. The mean age was 73.7 (SD 5.7) years and 68% were female. Total mean direct healthcare cost per individual increased annually and was CAD $13,929 in year 5. All 4 performance measures were met for 35% of individuals. In multivariable analyses, costs for not meeting access to rheumatology care and timely treatment performance measures were 20% (95% CI 8-32) and 6% (95% CI 1-12) higher, respectively, than where those measures were met. The main driver of cost savings among individuals meeting all 4 performance measures were from lower complex continuing care, home care, and long-term care costs, as well as fewer hospitalizations and emergency visits. CONCLUSION: Access to rheumatologists for RA diagnosis, timely treatment, and ongoing care are associated with lower total healthcare costs at 5 years. Investments in improving access to care may be associated with long-term health system savings.

System-level performance measures of access to rheumatology care: a population-based retrospective study of trends over time and the impact of regional rheumatologist supply in Ontario, Canada, 2002-2019.

OBJECTIVE: To determine whether there were improvements in rheumatology care for rheumatoid arthritis (RA) between 2002 and 2019 in Ontario, Canada, and to evaluate the impact of rheumatologist regional supply on access. METHODS: We conducted a population-based retrospective study of all individuals diagnosed with RA between January 1, 2002 and December 31, 2019. Performance measures evaluated were: (i) percentage of RA patients seen by a rheumatologist within one year of diagnosis; and (ii) percentage of individuals with RA aged 66 years and older (whose prescription drugs are publicly funded) dispensed a disease modifying anti-rheumatic drug (DMARD) within 30 days after initial rheumatologist visit. Logistic regression was used to assess whether performance improved over time and whether the improvements differed by rheumatology supply, dichotomized as < 1 rheumatologist per 75,000 adults versus ≥1 per 75,000. RESULTS: Among 112,494 incident RA patients, 84% saw a rheumatologist within one year: The percentage increased over time (adjusted odds ratio (OR) 2019 vs. 2002 = 1.43, p < 0.0001) and was consistently higher in regions with higher rheumatologist supply (OR = 1.73, 95% CI 1.67-1.80). Among seniors who were seen by a rheumatologist within 1 year of their diagnosis the likelihood of timely DMARD treatment was lower among individuals residing in regions with higher rheumatologist supply (OR = 0.90 95% CI 0.83-0.97). These trends persisted after adjusting for other covariates. CONCLUSION: While access to rheumatologists and treatment improved over time, shortcomings remain, particularly for DMARD use. Patients residing in regions with higher rheumatology supply were more likely to access care but less likely to receive timely treatment.

Development of an interdisciplinary early rheumatoid arthritis care pathway.

BACKGROUND: To develop an interdisciplinary care pathway for early rheumatoid arthritis (RA) including referral triage, diagnosis, and management. METHODS: Our process was a four-phase approach. In Phase 1, an anonymous survey was electronically distributed to division rheumatologists. This provided data to a small interprofessional working group of rheumatology team members who drafted an initial care pathway informed by evidence-based practice in Phase 2. In Phase 3, an education day was held with approximately 40 physicians (rheumatologists and rheumatology residents), members of our interprofessional team, and two clinic managers to review the proposed care elements through presentations and small group discussions. The care pathway was revised for content and implementation considerations based on feedback received. Implementation of the care pathway and development of strategies for evaluation is ongoing across multiple practice sites (Phase 4). RESULTS: Our care pathway promotes an approach to patient-centered early RA care using an interdisciplinary approach. Care pathway elements include triage processes, critical diagnostics, pre-treatment screening and vaccinations, and uptake of suggested RA pharmacologic treatment using shared decision-making strategies. Pathway implementation has been facilitated by nursing protocols and evaluation includes continuous monitoring of key indicators. CONCLUSION: The 'Calgary Early RA Care Pathway' emphasizes a patient-centered and interdisciplinary approach to early RA identification and treatment. Implementation and evaluation of this care pathway is ongoing to support, highest quality care for patients.

A Population-Based Study Evaluating Retention in Rheumatology Care Among Patients With Rheumatoid Arthritis.

OBJECTIVE: The study objective was to assess adherence to system-level performance measures measuring retention in rheumatology care and disease modifying anti-rheumatic drug (DMARD) treatment in rheumatoid arthritis (RA). METHODS: We used a validated health administrative data case definition to identify individuals with RA in Ontario, Canada, between 2002 and 2014 who had at least 5 years of potential follow-up prior to 2019. During the first 5 years following diagnosis, we assessed whether patients were seen by a rheumatologist yearly and the proportion dispensed a DMARD yearly (in those aged ≥66 for whom medication data were available). Multivariable logistic regression analyses were used to estimate the odds of remaining under rheumatologist care. RESULTS: The cohort included 50,883 patients with RA (26.1% aged 66 years and older). Over half (57.7%) saw a rheumatologist yearly in all 5 years of follow-up. Sharp declines in the percentage of patients with an annual visit were observed in each subsequent year after diagnosis, although a linear trend to improved retention in rheumatology care was seen over the study period (P < 0.0001). For individuals aged 66 years or older (n = 13,293), 82.1% under rheumatologist care during all 5 years after diagnosis were dispensed a DMARD annually compared with 31.0% of those not retained under rheumatology care. Older age, male sex, lower socioeconomic status, higher comorbidity score, and having an older rheumatologist decreased the odds of remaining under rheumatology care. CONCLUSION: System-level improvement initiatives should focus on maintaining ongoing access to rheumatology specialty care. Further investigation into causes of loss to rheumatology follow-up is needed.

Assessing the Sensitivity of Dual-Energy Computed Tomography 3-Material Decomposition for the Detection of Gout.

OBJECTIVES: The aim of this study was to assess the accuracy and precision of a novel application of 3-material decomposition (3MD) with virtual monochromatic images (VMIs) in the dual-energy computed tomography (DECT) assessment of monosodium urate (MSU) and hydroxyapatite (HA) phantoms compared with a commercial 2-material decomposition (2MD) and dual-thresholding (DT) material decomposition methods. MATERIALS AND METHODS: Monosodium urate (0.0, 3.4, 13.3, 28.3, and 65.2 mg/dL tubes) and HA (100, 400, and 800 mg/cm 3 tubes) phantoms were DECT scanned individually and together in the presence of the foot and ankle of 15 subjects. The raw data were decomposed with 3MD-VMI, 2MD, and DT to produce MSU-only and HA-only images. Mean values of 10 × 10 × 10-voxel volumes of interest (244 µm 3 ) placed in each MSU and HA phantom well were obtained and compared with their known concentrations and across measurements with subjects' extremities to obtain accuracy and precision measures. A statistical difference was considered significant if P < 0.05. RESULTS: Compared with known phantom standards, 3MD-VMI was accurate for the detection of MSU concentrations as low as 3.4 mg/dL ( P = 0.75). In comparison, 2MD was limited to 13.3 mg/dL ( P = 0.06) and DT was unable to detect MSU concentrations below 65.2 mg/L ( P = 0.16). For the HA phantom, 3MD-VMI and 2MD were accurate for all concentrations including the lowest at 100 mg/cm 3 ( P = 0.63 and P = 0.55, respectively). Dual-thresholding was not useful for the decomposition of HA phantom. Precision was high for both 3MD-VMI and 2MD measurements for both MSU and HA phantoms. Qualitatively, 3MD-VMI MSU-only images demonstrated reduced beam-hardening artifact and voxel misclassification, compared with 2MD and DT. CONCLUSIONS: Three-material decomposition-VMI DECT is accurate for quantification of MSU and HA concentrations in phantoms and accurately detects a lower concentration of MSU than either 2MD or DT. For concentration measurements of both MSU and HA phantoms, 3MD-VMI and 2MD have high precision, but DT had limitations. Clinical implementation of 3MD-VMI DECT promises to improve the performance of this imaging modality for diagnosis and treatment monitoring of gout.

Development and testing of the rheumatoid arthritis quality of care survey.

OBJECTIVES: The Rheumatoid Arthritis (RA) Quality of Care Survey (RAQCS) was developed to measure care quality according to a previously developed national RA quality improvement framework. METHODS: The development of the RAQCS occurred over 3 phases. First, the survey was developed by a team of healthcare providers, researchers, and two patient partners based on the existing national quality framework's 21 performance measures (PMs) and strategic objectives. Second, cognitive debriefing interviews were conducted with individuals living with RA to identify survey clarity, appropriateness of survey questions, and response options. Third, the survey was revised and distributed to participants recruited from Rheum4U (rheumatology longitudinal cohort). Results were tabulated and compared with a chart audit of participant medical records. RESULTS: Fifty-three participants completed the RAQCS. High performance (i.e., ≥70% meeting PM) was observed for 13 of 20 PMs. Lower performance was seen for the remaining PMs, which included documentation of body mass index (BMI) and smoking status, discussion of physical activity goals, comorbidity management including risk assessments for cardiovascular health and fragility fractures and disease activity assessment. There was high agreement (≥70%) between the RAQCS and chart review for 9 of 20 PMs. CONCLUSIONS: High agreement was observed between the RAQCS and chart review for selected PMs. The RAQCS may also be a valuable tool for quality improvement for measures where data are not usually available through other sources. Further testing of the RAQCS is needed to ascertain its reliability and validity as a patient self-reported tool to measure RA care quality.

Strategies for developing and implementing a rheumatoid arthritis healthcare quality framework: a thematic analysis of perspectives from arthritis stakeholders.

OBJECTIVES: To obtain stakeholder perspectives to inform the development and implementation of a rheumatoid arthritis (RA) healthcare quality measurement framework. DESIGN: Qualitative study using thematic analysis of focus groups and interviews. SETTING: Arthritis stakeholders from across Canada including healthcare providers, persons living with RA, clinic managers and policy leaders were recruited for the focus groups and interviews. PARTICIPANTS: Fifty-four stakeholders from nine provinces. INTERVENTIONS: Qualitative researchers led each focus group/interview using a semistructured guide; the digitally recorded data were transcribed verbatim. Two teams of two coders independently analysed the transcripts using thematic analysis. RESULTS: Perspectives on the use of different types of measurement frameworks in healthcare were obtained. In particular, stakeholders advocated for the use of existing healthcare frameworks over frameworks developed in the business world and adapted for healthcare. Persons living with RA were less familiar with specific measurement frameworks, however, they had used existing online public forums for rating their experience and quality of healthcare provided. They viewed a standardised framework as potentially useful for assisting with monitoring the care provided to them individually. Nine guiding principles for framework development and 13 measurement themes were identified. Perceived barriers identified included access to data and concerns about how measures in the framework were developed and used. Effective approaches to framework implementation included having sound knowledge translation strategies and involving stakeholders throughout the measurement development and reporting process. Clinical models of care and health policies conducive to outcome measurement were highlighted as drivers of successful measurement initiatives. CONCLUSION: These important perspectives will be used to inform a healthcare quality measurement framework for RA.

Description of a Multi-faceted COVID-19 Pandemic Physician Workforce Plan at a Multi-site Academic Health System.

BACKGROUND: The evolving COVID-19 pandemic has and continues to present a threat to health system capacity. Rapidly expanding an existing acute care physician workforce is critical to pandemic response planning in large urban academic health systems. INTERVENTION: The Medical Emergency-Pandemic Operations Command (MEOC)-a multi-specialty team of physicians, operational leaders, and support staff within an academic Department of Medicine in Calgary, Canada-partnered with its provincial health system to rapidly develop a comprehensive, scalable pandemic physician workforce plan for non-ventilated inpatients with COVID-19 across multiple hospitals. The MEOC Pandemic Plan comprised seven components, each with unique structure and processes. METHODS: In this manuscript, we describe MEOC's Pandemic Plan that was designed and implemented from March to May 2020 and re-escalated in October 2020. We report on the plan's structure and process, early implementation outcomes, and unforeseen challenges. Data sources included MEOC documents, health system, public health, and physician engagement implementation data. KEY RESULTS: From March 5 to October 26, 2020, 427 patients were admitted to COVID-19 units in Calgary hospitals. In the initial implementation period (March-May 2020), MEOC communications reached over 2500 physicians, leading to 1446 physicians volunteering to provide care on COVID-19 units. Of these, 234 physicians signed up for hospital shifts, and 227 physicians received in-person personal protective equipment simulation training. Ninety-three physicians were deployed on COVID-19 units at four large acute care hospitals. The resurgence of cases in September 2020 has prompted re-escalation including re-activation of COVID-19 units. CONCLUSIONS: MEOC leveraged an academic health system partnership to rapidly design, implement, and refine a comprehensive, scalable COVID-19 acute care physician workforce plan whose components are readily applicable across jurisdictions or healthcare crises. This description may guide other institutions responding to COVID-19 and future health emergencies.

Development of a Patient-centered Quality Measurement Framework for Measuring, Monitoring, and Optimizing Rheumatoid Arthritis Care in Canada.

OBJECTIVE: The aim of this study was to develop a patient-centered quality measurement framework to address a predefined vision statement and 7 strategic objectives for rheumatoid arthritis (RA) care that was developed in prior qualitative work with arthritis stakeholders. METHODS: One hundred forty-seven RA-related performance measures (PMs) were identified from a systematic review. A candidate list of 26 PMs meeting predefined criteria and addressing the strategic objectives previously defined was then assessed during a 3-round (R) modified Delphi. Seventeen panelists with expertise in RA, quality measurement, and/or lived experience with RA rated each PM on a 1-9 scale based on the items of importance, feasibility, and priority for inclusion in the framework during R1 and R3, with a moderated discussion in R2. PMs with median scores ≥ 7 on all 3 items without disagreement were included in the final set, which then underwent public comment. RESULTS: Twenty-one measures were included in the final framework (15 PMs from the Delphi and 6 published system-level measures on access to care and treatment). The measures included 4 addressing early access to care and timely diagnosis, 12 evidence-based care for RA and related comorbidities, 1 addressing patient participation as an informed partner in care, and 4 on patient outcomes. CONCLUSION: The proposed framework builds upon existing measures capturing early access to care and treatment in RA and adds important PMs to promote high-quality RA care and outcome measurement. In the next phase, the authors will test the framework in clinical practice in addition to addressing certain areas where no suitable PMs were identified.

Rapid Response to Cytokine Storm Inhibition Using Anakinra in a Patient With COVID-19 Myocarditis.

A 62-year-old woman with coronavirus disease 2019 developed acute respiratory failure and cardiogenic shock in the setting of a systemic hyperinflammatory state and apparent ST-elevation myocardial infarction. Cardiac magnetic resonance imaging showed fulminant acute myocarditis with severe left ventricular dysfunction. Treatment with the recombinant interleukin-1 receptor antagonist anakinra and dexamethasone resulted in rapid clinical improvement, reduction in serum inflammatory markers, and a marked recovery in cardiac magnetic resonance--based markers of inflammation and contractile dysfunction. The patient was subsequently discharged from the hospital. Emerging evidence supports use of anti-inflammatory therapies, including anakinra and dexamethasone, in severe cases of coronavirus disease 2019.

Une femme de 62 ans atteinte de la COVID-19 a développé une insuffisance respiratoire aiguë et un choc cardiogène dans le contexte d'un état hyperinflammatoire général et d'un infarctus du myocarde avec élévation du segment ST apparent. L'imagerie par résonance magnétique cardiaque a révélé une myocardite aiguë fulminante accompagnée d'une dysfonction ventriculaire gauche sévère. Le traitement par l'anakinra, un antagoniste des récepteurs de l'interleukine 1 recombinant, et la dexaméthasone, a entraîné une amélioration clinique rapide, une diminution des marqueurs inflammatoires sériques et un rétablissement marqué selon les marqueurs de l'inflammation et de la dysfonction contractile à la résonance magnétique cardiaque. La patiente a par la suite reçu son congé de l'hôpital. De nouvelles données probantes militent en faveur de l'emploi de traitements anti-inflammatoires, comme l'anakinra et la dexaméthasone, dans les cas sévères de COVID-19.

Priorities for High-quality Care in Rheumatoid Arthritis: Results of Patient, Health Professional, and Policy Maker Perspectives.

OBJECTIVE: To elucidate the essential elements of high-quality rheumatoid arthritis (RA) care in order to develop a vision statement and a set of strategic objectives for a national RA quality framework. METHODS: Focus groups and interviews were conducted by experienced qualitative researchers using a semistructured interview or focus group guide with healthcare professionals, patients, clinic managers, healthcare leaders, and policy makers to obtain their perspectives on elements essential to RA care. Purposive sampling provided representation of stakeholder types and regions. Recorded data was transcribed verbatim. Two teams of 2 coders independently analyzed the deidentified transcripts using thematic analysis. Strategic objectives and the vision statement were drafted based on the overarching themes from the qualitative analysis and finalized by a working group. RESULTS: A total of 54 stakeholders from 9 Canadian provinces participated in the project (3 focus groups and 19 interviews). Seven strategic objectives were derived from the qualitative analysis representing the following themes: (1) early access and timeliness of care; (2) evidence-informed, high-quality care for the ongoing management of RA and comorbidities; (3) availability of patient self-management tools and educational materials for shared decision making; (4) multidisciplinary care; (5) patient outcomes; (6) patient experience and satisfaction with care; and (7) equity, the last of which emerged as an overarching theme. The ultimate vision obtained was "ensuring patient-centered, high-quality care for people living with rheumatoid arthritis." CONCLUSION: The 7 strategic objectives that were identified highlight priorities for RA quality of care to be used in developing the National RA Quality Measurement Framework.

Chronic non-bacterial osteomyelitis masquerading as fibrous dysplasia.

Chronic non-bacterial osteomyelitis is a rare auto-inflammatory bone disease seen predominantly in the paediatric population. We describe a unique case of a 30-year-old female who presented with right-sided jaw pain and intermittent swelling over the course of 6 years. She was initially treated with antibiotics for possible osteomyelitis, then temporarily diagnosed with fibrous dysplasia. She underwent extensive investigations consisting of an infectious workup, numerous imaging modalities, and three separate biopsies of her right jaw. She was ultimately diagnosed with chronic non-bacterial osteomyelitis based upon her history of recurrent episodes of painful swelling, response to non-steroidal anti-inflammatories, previously raised acute phase reactants, and magnetic resonance imaging findings. Unfortunately, she became refractory to non-steroidal anti-inflammatory therapy. Consequently, she was successfully treated with pamidronate, achieving clinical remission with improvement in her imaging findings. This case highlights the difficulty of diagnosis of chronic non-bacterial osteomyelitis and the need for increased awareness of the disease in the adult population. Additionally, the effective treatment with pamidronate supports the use of a bisphosphonate as an early intervention for adult-onset chronic non-bacterial osteomyelitis in patients who have failed non-steroidal anti-inflammatory therapy.

Implementation and Evaluation of Audit and Feedback for Monitoring Treat-to-Target (T2T) Strategies in Rheumatoid Arthritis Using Performance Measures.

INTRODUCTION: In collaboration with the Alberta Medical Association's Physician Learning Program we developed individualized physician reports and held a group feedback session on rheumatoid arthritis (RA) performance measures (PM) to facilitate treat-to-target (T2T) strategies and evaluated physician experiences with this process. METHODS: 5 PMs addressing T2T concepts from an established Canadian quality framework were operationalized for physician practice reports at 2 university-affiliated rheumatology clinics. Rheum4U, a quality improvement and research platform, was the data source. The audit results were reviewed in a facilitated group feedback session. Rheumatologists provided experiential feedback on the process through survey and/or an interview. Transcripts from interviews were analyzed using a 6-step thematic analysis. RESULTS: 11 of 12 eligible rheumatologists consented to receive practice reports and provided feedback through surveys (n = 5) and interviews (n = 6). The practice reports from Rheum4U (n = 448 patients) revealed high rates of yearly follow-up (> 85%, PM1) and 100% performance on documentation of disease activity at ≥ 50% of visits (PM2). Only 34% of patients were seen within 3 months if not in remission (PM3) with 62% (2017) and 69% (2018) of those with active RA achieving a LDA state within 6 months (PM4). Approximately 70% of patients were in remission at any time point (PM5). All survey respondents agreed or strongly agreed comparison to peers was valuable and helped them reflect on their practice. Several strategies for improvement were identified, including but not limited to, leveraging of electronic records for future audit and feedback reports, providing additional granularity of results, additional stratification of results, and using high-performing peers as the comparator rather than the group mean. CONCLUSIONS: Audit and feedback was perceived by clinicians as a useful strategy for evaluating T2T efforts in RA. Future work will focus on longitudinal evaluation of the clinical impact of this quality improvement initiative.

Rheum4U: Development and testing of a web-based tool for improving the quality of care for patients with rheumatoid arthritis.

OBJECTIVES: To develop a web-based tool (Rheum4U) to capture clinically meaningful data to direct treatment. Rheum4U integrates longitudinal clinical data capture of rheumatoid arthritis (RA) disease activity measures and patient-reported outcomes measures (PROMs). This study tests the feasibility, acceptability and efficiency of Rheum4U among patients and healthcare providers. METHODS: Rheum4U was developed in two phases: P1 design and development; and P2 pilot testing. P1: A working group of rheumatologists and researchers (n=13) performed a prioritisation exercise to determine data elements to be included in the platform. The specifications were finalised and supplied to the platform developer. Alpha testing was performed to correct initial software bugs. 18 testers (physicians, nurses and recruited non-patient lay-testers) beta tested Rheum4U for usability. P2: Rheum4U was piloted in 2 rheumatology clinics and evaluated for feasibility, efficiency and acceptability using interviews, observation and questionnaires with patients and healthcare providers. RESULTS: 110 RA patients, 9 rheumatologists and 9 allied health providers participated in the pilot. Mean patient age was 53 years and 74% were female. The majority (86%) were satisfied or very satisfied with online data entry and 79% preferred it to paper entry. Healthcare providers found Rheum4U easy and clear to use (90%), and they perceived that it improved their job performance (91%). Completeness and easy availability of the patient information improved clinic efficiency. CONCLUSIONS: Rheum4U highlights the benefits of a web-based tool for clinical care, quality improvement and research in the clinic and this study provides valuable information to inform full platform implementation.

Sulfasalazine and its metabolites inhibit platelet function in patients with inflammatory arthritis.

The purpose of this study is to assess the effect of sulfasalazine and its metabolites on platelet function in patients with inflammatory arthritis (IA). One hundred thirty-five consecutive patients with an established diagnosis of IA were screened. Those with a history of cardiovascular disease (CVD), taking anti-platelet agents or non-steroidal anti-inflammatory drugs (NSAIDs) were excluded. A total of 32 patients were investigated, 15 taking sulfasalazine and 17 taking other disease-modifying anti-rheumatic drugs (DMARDs) and no sulfasalazine. These two cohorts were compared to 15 patients with stable CVD on long-term aspirin. The effect of sulfasalazine and its metabolites on arachidonic acid (AA)-induced platelet aggregation was also tested in vitro in samples from healthy donors (n = 18). Demographics, CVD risk factors and disease activity indices were similar in the sulfasalazine and other DMARD groups. AA-induced platelet aggregation was significantly inhibited in the sulfasalazine group (9 ± 7 %) and comparable to that in the aspirin group (10 ± 6 %). In contrast, there was no effect on AA-induced platelet aggregation in the other DMARDs group (77 ± 12 %) (p < 0.001). Furthermore, sulfasalazine therapy had no effect on platelet aggregation in response to multiple other agonists. Sulfasalazine and its metabolites (5-aminosalicylic acid and sulfapyridine) exerted an additive and dose-dependent inhibitory effect on AA-induced platelet aggregation in vitro (p < 0.001). The inhibition of AA-induced platelet aggregation by sulfasalazine is comparable to that achieved by aspirin and is dependent on both sulfasalazine and its metabolites. This represents a potential mechanism that may contribute to the known cardioprotective effect of sulfasalazine in patients with IA.

Plasma fibrinogen along with patient-reported outcome measures enhances management of polymyalgia rheumatica: a prospective study.

OBJECTIVE: We sought to prospectively examine the responsiveness of a number of patient-reported outcome (PRO) measures in polymyalgia rheumatica (PMR), as well as their relationship to the biomarkers erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), and plasma fibrinogen. METHODS: Sixty patients with PMR were divided into active (n = 25) or inactive (n = 35) disease groups based on symptoms; physician assessment; and the biomarkers ESR, CRP, and plasma fibrinogen. Groups underwent assessment at baseline and 6 weeks. Disease activity measures and relevant PRO measures were recorded. Measures of responsiveness were compared for all PRO and biomarkers. RESULTS: Visual analog scale disease activity (VASDA) and VAS quality of life (VASQOL) are more responsive to change in disease activity than VAS pain, morning stiffness, Health Assessment Questionnaire (HAQ), and PMR-activity score (AS). Analysis of PMR-AS versus VASDA, VASQOL, and HAQ showed correlation coefficients of 0.87 (p < 0.001), 0.80 (p < 0.001), and 0.68 (p < 0.001), respectively. Receiver-operating curve (ROC) analysis revealed VASDA to be more specific than either HAQ (0.95 vs 0.85; p < 0.001) or VASQOL (0.95 vs 0.93; p < 0.001) for the detection of response to treatment in active PMR. Overall, fibrinogen showed superior correlation coefficients with the various PRO than either of the standard biomarkers ESR or CRP. In addition, standardized response means for fibrinogen, ESR, and CRP were 1.63, 1.2, and 1.05, respectively, indicating that plasma fibrinogen was the most responsive biomarker for assessment of change in disease activity. CONCLUSION: VASDA and VASQOL are the most responsive PRO to changes in disease activity in PMR. In addition, plasma fibrinogen demonstrated greater responsiveness to changes in disease activity and superior correlation with the various PRO measures recorded than did the standard biomarkers ESR and CRP.

Plasma fibrinogen is an accurate marker of disease activity in patients with polymyalgia rheumatica.

OBJECTIVE: The overall aim of this study was to establish whether plasma fibrinogen was a superior biomarker of disease activity in active PMR than the standard biomarkers, ESR and CRP. METHODS: Sixty patients with PMR were divided into active (n = 25) or inactive (n = 35) disease groups based on symptoms, physician assessment and biomarkers ESR and CRP. Plasma fibrinogen was assayed. Groups underwent assessment at baseline and 6 weeks. Disease activity as per the PMR activity score (PMR-AS) was recorded at all visits. Receiver operator curves (ROCs), predictive values and likelihood ratios were calculated for all biomarkers. RESULTS: Disease activity measures improved significantly in the active group between weeks 1 and 6 (P < 0.001). There was no significant difference between the activity scores at week 6 in the active group and the inactive group. Mean fibrinogen decreased from 5.2 to 3.5 g/l (normal <4 g/l) between weeks 1 and 6 in the active group. Mean ESR and CRP decreased from 59.6 to 24.3 mm/h (normal <30 mm/h) and 45.9 to 12.66 mg/l (normal <5 mg/l), respectively. Receiver operator curve analysis revealed fibrinogen to be more specific than either ESR or CRP for the detection of response to treatment in active PMR, with an overall sensitivity and specificity of 92% and 96%, respectively. Values above the upper limit of normal for fibrinogen, CRP and ESR were associated with likelihood ratios for active disease of 20.53, 2.9 and 2.8, respectively (P < 0.001). CONCLUSION: Plasma fibrinogen is at least as useful as CRP and ESR for the diagnosis of active PMR and more specific for confirmation of response to treatment than either ESR or CRP.

Treatment and management of pseudogout: insights for the clinician.

Pseudogout and the associated calcium pyrophosphate dihydrate (CPPD)- crystal-related arthropathies are common conditions that present particular management problems in clinical practice as they often affect older patients with multiple medical comorbidities. The epidemiology, metabolic and endocrine disease associations, and routine investigations used in the diagnostic workup are briefly reviewed. Current treatment approaches that are mainly directed at relieving the symptoms of joint inflammation are outlined. Unlike gout, there are no agents available that have been shown to decrease crystal load in CPPD-related joint disease. Recent novel insights into the pathogenesis of crystal-induced joint inflammation and subsequent joint degeneration are also discussed. The potential of colchicine as a prophylactic agent in managing recurrent attacks and the likely mechanisms of its effects on the NACHT, LRR and PYD domains-containing protein 3 (NALP-3) inflammasome of the innate immune system are highlighted. The use of agents that directly target the inflammasome, in particular drugs which inhibit the interleukin 1 pathway, in the treatment of severe, refractory pseudogout is also discussed. Finally, there is particular emphasis on the likely pathogenic role of CPPD crystal deposition in degenerative joint disease and the use of targeted anticrystal therapies as potential disease-modifying drugs.