The labor system described in the excerpt was most similar t…
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The lаbоr system described in the excerpt wаs mоst similаr tо the labor system used for--
Pоlyаrteritis Nоdоsа (PAN) Bаckground A systemic necrotizing vasculitis of medium-sized arteries. Characterized by transmural inflammation and fibrinoid necrosis. Leads to ischemia, infarction, and aneurysm formation. Classically spares the lungs (distinguishes from many other vasculitides). Associated with hepatitis B infection in some cases. Symptoms Constitutional: fever, weight loss, malaise, fatigue. Skin: livedo reticularis, nodules, ulcers, purpura. Neurologic: mononeuritis multiplex (asymmetric neuropathy, foot drop, wrist drop). Renal: hypertension, renal insufficiency (due to renal artery involvement, not glomerulonephritis). GI: abdominal pain after eating (mesenteric ischemia), nausea, vomiting, GI bleeding. Musculoskeletal: arthralgia, myalgia. Physical Exam Findings Tender subcutaneous nodules or skin ulcers. Livedo reticularis (mottled skin discoloration). Asymmetric neurologic deficits (peripheral neuropathy). Hypertension, abdominal tenderness. Making the Diagnosis Labs: nonspecific inflammation (↑ESR/CRP), may show hepatitis B surface antigen. Biopsy: necrotizing transmural inflammation of medium arteries with fibrinoid necrosis. Angiography: multiple microaneurysms and irregular constrictions (“beading”) in medium-sized vessels. ANCA is usually negative. Management First-line: high-dose corticosteroids. Immunosuppressants (cyclophosphamide, azathioprine) for severe disease. If Hepatitis B–associated: treat with antivirals + plasmapheresis in addition to steroids. Prognosis improved with early recognition and treatment. Question A 45-year-old man presents with 3 months of fever, weight loss, abdominal pain after meals, and numbness in his right foot. Exam shows livedo reticularis on the lower extremities and decreased strength in ankle dorsiflexion. Laboratory testing reveals elevated ESR and CRP; hepatitis B surface antigen is positive. Biopsy of a skin nodule demonstrates necrotizing inflammation of medium-sized arteries. Which of the following additional findings would most likely be seen in this patient?
Ankle Sprаins Bаckgrоund Amоng the mоst common musculoskeletаl injuries, usually from twisting or inversion. Most involve the lateral ligaments, especially the anterior talofibular ligament (ATFL), followed by the calcaneofibular ligament (CFL). Medial (deltoid ligament) sprains are less common and usually indicate higher-energy trauma. Symptoms Acute pain and swelling after inversion or eversion injury. Difficulty bearing weight. May report a “pop” at time of injury. Physical Exam Findings Swelling and tenderness localized to affected ligaments. Anterior drawer test (ankle): excessive anterior translation of the talus suggests ATFL injury. Talar tilt test: assesses CFL. Rule out fracture using the Ottawa ankle rules (tenderness at malleoli, base of 5th metatarsal, navicular; inability to bear weight). Classification Grade I: Stretch without macroscopic tear → mild tenderness, no instability. Grade II: Partial ligament tear → moderate swelling, tenderness, mild instability. Grade III: Complete ligament tear → marked swelling, ecchymosis, significant instability. Making the Diagnosis Clinical diagnosis based on history and exam. X-rays guided by Ottawa ankle rules to rule out fracture. MRI may be used for chronic instability or unclear diagnosis. Management Initial treatment (RICE): Rest, Ice, Compression, Elevation. Early functional rehab is encouraged: gradual return to weightbearing, bracing, physical therapy for proprioception/strength. Grade I–II: Conservative management. Grade III or recurrent instability: May require immobilization or surgical stabilization in athletes. Patient education: full recovery may take weeks to months; risk of recurrence if inadequate rehab. QuestionA 20-year-old man lands awkwardly after a basketball jump and twists his right ankle inward. He is unable to continue playing due to pain. On exam, there is swelling and point tenderness just anterior to the lateral malleolus. Pain is reproduced when the talus is pulled forward relative to the tibia while the ankle is slightly plantarflexed. Which ligament is most likely injured?
Reаctive Arthritis (Reiter Syndrоme) Bаckgrоund An HLA-B27–аssоciated seronegative spondyloarthropathy. Occurs 1–4 weeks after an infection, most commonly: Genitourinary: Chlamydia trachomatis Gastrointestinal: Shigella, Salmonella, Yersinia, Campylobacter Classically described by the triad: “Can’t see, can’t pee, can’t climb a tree”. Symptoms Asymmetric oligoarthritis, usually of the lower extremities. Conjunctivitis / anterior uveitis. Urethritis or cervicitis. May also have: enthesitis (heel pain, Achilles tendon), dactylitis (“sausage digits”), mucocutaneous lesions (balanitis, oral ulcers, keratoderma blennorrhagicum). Physical Exam Findings Warm, swollen, tender joints (knees, ankles, feet). Conjunctival injection, anterior uveitis on eye exam. Urethral discharge or dysuria. Skin lesions on palms/soles (keratoderma). Making the Diagnosis Clinical diagnosis based on recent infection + characteristic triad. No single diagnostic test. Labs: nonspecific (↑ESR/CRP), HLA-B27 often positive. Synovial fluid: sterile, inflammatory (helps distinguish from septic arthritis). Management Treat underlying infection: e.g., doxycycline or azithromycin for Chlamydia. Symptom control: NSAIDs first-line. Refractory disease: sulfasalazine, methotrexate, or biologics (TNF inhibitors). Corticosteroid injections for persistent mono/oligoarthritis. Usually self-limited, but chronic/recurrent disease can occur. Question A 27-year-old man presents with 2 weeks of left knee pain and swelling. He reports pain and redness in his right eye and burning with urination. One month ago, he was treated for watery diarrhea after a camping trip. On exam, the left knee is swollen and tender with a small effusion, and the conjunctiva of the right eye is injected. Laboratory studies show elevated ESR and CRP. Arthrocentesis reveals sterile inflammatory synovial fluid. Which of the following is the most appropriate initial management?