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Clinical Aspects of Gout PowerPoint Presentation

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Description : Check out this medical PowerPoint presentation titled "Clinical Aspects of Gout” by Joseph D. Croft, Jr, MD, FACP, MACR.

This medical PowerPoint presentation is about gout, a type of inflammatory arthritis that is caused by the buildup of uric acid crystals in the joints. This presentation gives the clinical aspects of gout.

Tags : Gout, inflammatory arthritis, uric acid crystals, Orthopaedic Surgery, Orthopaedic Surgery PowerPoint presentation

Published on : Jun 20, 2023 | Views : 1329 | Downloads : 2

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Slide 1-

Clinical Aspects of GoutICD-9-CM Coordination and Maintenance Committee Meeting Joseph D. Croft, Jr, MD, FACP, MACR Clinical Professor of Medicine (Rheumatology) Georgetown University Medical School
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Gout: Ancient Pedigree with New Needs 2640 BC: podagra first identified by the Egyptians 5th century BC: Hippocrates referred to gout as “unwalkable disease” and noted links between gout & lifestyle, demographics & other variables Why New Needs? Gout is currently a major and growing public health problem Available ICD-9-CM codes do not differentiate between several distinctly different clinical aspects of gout There is need for accurate and clinically logical code characterization for primary & specialty clinicians alike Accurately coded database will allow us to Improve documentation of the full spectrum of clinical aspects of gout and associated comorbidities Prevent loss of critical patient information that adds to our ability positively impact outcomes in terms of patient QOL and disability, as well as to assess health economic implications of interventions
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Nature of Gout Chronic heterogeneous disorder of urate metabolism Results in deposition of monosodium urate crystals in the joints and soft tissues, with accompanying inflammation and degenerative consequences Most common form of inflammatory joint disease in men aged ≥40 years This disorder can be progressive through four stages if undertreated Asymptomatic hyperuricemia Acute gout Intercritical gout Chronic tophaceous gout Image reprinted with permission. American College of Rheumatology. ACR Clinical Slide Collection on the Rheumatic Diseases. Atlanta, Ga. American College of Rheumatology; 1998.
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Hallmarks of Gout Group of conditions which may be characterized by An elevation of serum uric acid (usually) Recurrent attacks (flares) of an acute inflammatory arthritis with monosodium urate crystals demonstrated in synovial fluid leukocytes Bone and joint destruction in some cases Aggregates of uric acid crystals (tophi) in and around joints, soft tissues, and various organs Tophus in bone leading to erosions in some cases Kidney disease and stones Image reprinted with permission. American College of Rheumatology. ACR Clinical Slide Collection on the Rheumatic Diseases. Atlanta, Ga.: American College of Rheumatology; 1998. http://www.healthinplainenglish.com/health/musculoskeletal/gout/index.htm
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Major Musculoskeletal Disorders in US Persons in USA Affected by Common Rheumatologic Disorders Frequent Low Back Pain 40.2 million in 2005, projected to increase to 48.6 million in 2025 Osteoarthritis 20.7 million in 2005, projected to increase to 28.1 million in 2025 Osteoporosis 3.8 million in 2005, projected to increase to 5.3 million in 2025 Gout 2.6 million in 2005, projected to increase to 3.6 million in 2025 Rheumatoid Arthritis 2.1 million in 2005, projected to increase to 2.8 million in 2025 Adapted from The Lewin Group, Inc. Report to ACR 2006
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Hyperuricemia Biologically significant hyperuricemia (≥6.8 mg/dL) is less thanlaboratory defined hyperuricemia (≥8.0 mg/dL)
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Hyperuricemia and Gout
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Evolution from Hyperuricemia to Gout Over time, untreated, chronic hyperuricemia increases body urate stores, advancing the severity of the disease Flares last longer Flares occur more often Intercritical segments (flare free periods) decrease Persistent pain and stiffness occur Adapted from Klippel et al, eds. In: Primer on the Rheumatic Diseases. 12th ed. Arthritis Foundation; 2001:313.
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Properly Lowering Serum Urate s Acute Flares 86% (71/81) of patients who had serum urate <6.0 mg/dL did not experience an acute flare during the study period Shoji et al. Arthritis Care Res. 2004;51:321-325.
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Flare: Classic Description The victim goes to bed and sleeps in good health. About two o’clock in the morning he is awakened by a severe pain in the great toe; more rarely in the heel, ankle, or instep. The pain is like that of a dislocation, and yet the parts feel as if cold water were poured over them . . . Now it is a violent stretching and tearing of the ligaments – now it is a gnawing pain, and now a pressure of tightening. So exquisite and lively meanwhile is the feeling of the part affected, that it cannot bear the weight of the bedclothes nor the jar of a person walking in the room. The night is spent in torture. Sydenham, 1683 Sydenham, T: The Works of Thomas Sydenham, London, New Sydenham Soc. 1850 (translation)
Slide 11-

Podagra Image reprinted with permission. American College of Rheumatology. ACR Clinical Slide Collection on the Rheumatic Diseases. Atlanta, Ga.: American College of Rheumatology; 1998.
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Flare: A Vet’s Description “I’ve been shot, beat up, stabbed and thrown out of a helicopter, but none of that compared to the gout.” Birmingham, Alabama VA Hospital March, 2001 Courtesy Kenneth Saag, M.D.
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Common Sites of Acute Flares
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Intervals Between 1st & 2nd Acute Flares Majority experience second acute flare within 1 year of first gout flare Yu et al. Ann Int Med. 1961;55:179-192
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Advanced Chronic Tophaceous Gout Tophi can be seen clinically, with obvious deformity demonstrated in hands and foot Tophi may be associated with bony destruction as seen on the x-ray on right
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Patient & Societal Burden Patient  QOL with gout progression Worse QOL scores with >1 tophi vs no tophi; with SUA >10 vs <9.0 mg/dL1 Inter-critical periods: 25% report pain when not experiencing flare1 Nearly half of all gout pts have either ACR Class II or III disability3 Difficulty in recreation & other QOL activities, but some will also have difficulty with even basic activities of daily living Higher rate of all-cause mortality in those with gout vs without4 Society Estimated 2.6 million (2005) with estimate of 3.6 million (2025)2 $27.4 million = estimated annual direct cost for new cases of acute gout in US5 Near doubling of claims cost for Rx, sick leave, short term disability and workman’s comp in gout vs non-gout pts ($6970 vs $3705)6 More absence days per year and lower mean annual productivity6 1. Osterhaus JT, et al. Presented at: 69th Annual Meeting of the American College of Rheumatology; 2005. San Diego.#1035. 2. The Lewin Group, Inc. Report to ACR 2006. 3. Alvarez-Nemegyei et al J Rheum. 2005. 4. Choi, Curhan Circ. 2007. 5. Kim Clin Ther. 2003. 6. Khanna D et al. Med Decis Making, 2008
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Largely Non-Specialist Care The majority of individuals with gout are treated by primary care physicians, not specialists Many gout-related visits are based on acute exacerbations of the disease The diagnostic terms “acute gout” and “chronic gout” with and without “tophi” are commonly documented in primary care medical records http://hcupnet.ahrq.gov/ Distribution of Office Visits (1999-2003) Frequent Low Back Pain Rheumatologist (3%) Primary Care Provider or PCP (74%) Other (22%) Osteoarthritis Rheumatologist (7%) PCP (52%) Other (40%) Osteoporosis Rheumatologist (5%) PCP (79%) Other (15%) Gout Rheumatologist (12%) PCP (80%) Other (8%) Rheumatoid Arthritis Rheumatologist 52%) PCP (31%) Other (17%) Adapted from The Lewin Group, Inc. Report to ACR 2006
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Changing Treatment Landscape After Four Decades Current Allopurinol Uricosurics Symptomatic relief In Development Uricosurics Selective xanthine oxidase inhibitor Pegylated uricase enzyme IL-1 receptor antagonists URAT1 Transporter Inhibitor IL-1 = Lnterleukin-1 URAT1 = urate transporter 1
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Clinical Limitations of Current Code Characterization
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Limitations of Current Code Characterization Available ICD-9-CM codes do not differentiate between several distinctly different clinical aspects of gout There is need for accurate and clinically logical code characterization for primary & specialty clinician alike Current code structure can be confusing or unclear, leading to majority of diagnoses to be coded to 274.9 (Gout, unspecified) This leads to Difficulty identifying different aspects of gout in encoded data Inability to relate visits and treatment to specific stage of gout Barriers in analysis of pt outcomes & determining intervention benefit Accurately coded database will allow us to Improve documentation of the full spectrum of clinical aspects of gout and associated comorbidities (e.g. renal/heart failure, metabolic syndrome, hypertension, cardiovascular disease, diabetes, obesity, hyperlipidemia) Prevent loss of critical patient information that compromises our ability to define outcomes in terms of patient QOL and disability, as well as to assess health economic implications of interventions Refs: Vazquez-Mellado et al. Best Practice Res Clin Rheumatol. 2004.Nakanishi et al. Int J Epidemiol. 1999. Ford et al. JAMA. 2002. Boyko et al. Diabetes Care. 2000. Anker et al. Circulation. 2003. Gavin et al. Am J Cardiovasc Drugs. 2003. Niskanen et al. Arch Intern Med. 2004.Gagliardi Atheroscl 2008. Puig Curr Opin Rheum 2008. Ebrahimpour Endo Prac 2008. Choi Rheum 2008.