Raiyyan Tahsan

Raiyyan Tahsan
Hello I'm Raiyyan Tahsan
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TC(1033).(05).Orthopedics Case No 111:- Septic Arthritis

Septic Arthritis — বাংলায় Clinical + Prescription-oriented Notes

Clinical warning: Septic arthritis হলো orthopedic/rheumatologic emergency। Acute hot swollen painful joint হলে joint aspiration + culture না করে শুধু analgesic/empirical steroid দেওয়া বিপজ্জনক। Synovial fluid analysis diagnosis confirm করার মূল পরীক্ষা; antibiotic সাধারণত aspiration/culture নেওয়ার পরে শুরু করা উচিত, তবে sepsis/shock থাকলে delay করা যাবে না।

1) Definition — সংজ্ঞা

Septic arthritis হলো joint cavity/synovial fluid/synovium-এ microorganism, সাধারণত bacteria, দ্বারা infection—যার ফলে acute inflammation, pus formation, cartilage destruction ও joint damage হতে পারে।

Core meaning:
একটি joint-এর ভেতরে bacteria ঢুকে pus/inflammation তৈরি করে; দ্রুত চিকিৎসা না করলে joint permanent নষ্ট হয়ে যেতে পারে।

2) Etiology / Cause — কারণগুলো

Common organisms

  • Staphylococcus aureus — adult native joint septic arthritis-এর সবচেয়ে common organism।
  • Streptococcus species — দ্বিতীয় গুরুত্বপূর্ণ cause।
  • Gram-negative bacilli: E. coli, Klebsiella, Pseudomonas — elderly, immunosuppressed, UTI/GI source, IVDU, puncture wound.
  • Neisseria gonorrhoeae — sexually active young adult; migratory polyarthralgia, tenosynovitis, dermatitis pattern দিতে পারে।
  • Mycobacterium tuberculosis / fungal arthritis — chronic, indolent monoarthritis; immunosuppressed রোগীতে বেশি।
    AAFP review অনুযায়ী adult septic arthritis-এ S. aureus commonest, followed by streptococci; elderly/immunosuppressed patients-এ gram-negative coverage consider করতে হয়।

Risk factors — কারা বেশি ঝুঁকিতে

  • Diabetes mellitus
  • Rheumatoid arthritis / pre-existing joint disease
  • Recent joint injection, arthroscopy, surgery
  • Prosthetic joint
  • Skin infection, cellulitis, ulcer, abscess
  • Immunosuppressive drug, steroid, chemotherapy, HIV
  • Chronic kidney disease, liver disease
  • IV drug use
  • Recent bacteremia, UTI, pneumonia, endocarditis
  • Trauma, penetrating injury, animal/human bite
  • Age >60–80 years

Pathophysiology — কীভাবে joint নষ্ট হয়

  • Bloodstream, trauma, injection বা nearby osteomyelitis থেকে bacteria joint-এ ঢোকে।
  • Synovium vascular হওয়ায় organism সহজে seed করে।
  • Neutrophil, cytokine, proteolytic enzyme release হয়।
  • Cartilage matrix damage → joint space narrowing → stiffness/deformity।
  • Untreated হলে 24–48 ঘণ্টার মধ্যেও cartilage/subchondral damage শুরু হতে পারে। AAFP review-তে delayed treatment permanent morbidity/mortality এবং cartilage destruction-এর ঝুঁকির কথা উল্লেখ আছে।

3) Symptoms — লক্ষণগুলো

Main symptoms

  • Acute severe joint pain — সাধারণত sudden onset.
  • Joint swelling / effusion — knee সবচেয়ে common; hip, shoulder, ankle, wrist হতে পারে।
  • Warmth + redness — joint গরম ও লাল।
  • Severe tenderness — touch করলেও ব্যথা।
  • Painful passive movement — septic arthritis-এর খুব গুরুত্বপূর্ণ clinical clue.
  • Reduced range of motion — রোগী joint নড়াতে পারে না।
  • Fever/chills — থাকতে পারে, কিন্তু fever না থাকলেও septic arthritis বাদ যায় না।
  • Unable to bear weight — knee/hip/ankle infection-এ common.
  • Systemic toxicity — tachycardia, hypotension, confusion, sepsis.

Special presentation

  • Hip septic arthritis: groin pain, referred knee pain, flexed/externally rotated hip, walking impossible.
  • Gonococcal arthritis: migratory joint pain, tenosynovitis, pustular/hemorrhagic rash, urethral/cervical symptoms থাকতে বা না থাকতে পারে।
  • TB/fungal arthritis: chronic swelling, mild pain, low-grade fever, weight loss, sinus formation.

4) Clinically diagnosis — clinical diagnosis কীভাবে করবেন

Suspect septic arthritis when

  • Acute monoarthritis + hot swollen joint
  • Severe pain on passive ROM
  • Fever বা raised CRP/ESR
  • Risk factor present: DM, RA, immunosuppression, joint injection, prosthesis, skin infection
  • Joint aspiration fluid turbid/purulent

Bedside clinical points

  • Vitals: fever, tachycardia, hypotension, sepsis score.
  • Joint exam: swelling, warmth, erythema, effusion, ROM restriction.
  • Skin exam: cellulitis, ulcer, abscess, bite mark, injection site.
  • STI exam/history: urethral discharge, genital symptoms, high-risk sexual exposure.
  • Cardiac exam: murmur/endocarditis clue.
  • Do not diagnose only from serum uric acid or X-ray.
  • Crystals থাকলেও septic arthritis exclude হয় না; gout + septic arthritis একসাথে হতে পারে। AAFP notes that synovial WBC <50,000/µL does not exclude septic arthritis and crystals do not exclude infection.

5) Investigations — specific tests

A) Synovial fluid analysis — সবচেয়ে গুরুত্বপূর্ণ

Joint aspiration করে পাঠাবেন:

  1. Gross appearance: turbid/purulent.
  2. Cell count + differential:
    • WBC often >50,000/µL
    • PMN usually >75–90%
    • কিন্তু WBC কম হলেও septic arthritis বাদ যায় না।
  3. Gram stain
  4. Aerobic + anaerobic culture and sensitivity
  5. Crystal analysis: MSU crystal/gout, CPPD/pseudogout
  6. Glucose/protein/lactate — supportive, not definitive
  7. Blood culture bottle inoculation — organism yield বাড়াতে helpful
  8. Chronic case হলে: AFB stain/culture, GeneXpert/NAAT for TB, fungal culture
    Synovial fluid Gram stain, aerobic/anaerobic culture, WBC count with differential before antibiotics is recommended for suspected septic arthritis.

B) Blood tests

  • CBC with neutrophil count
  • ESR, CRP — baseline + treatment response monitor
  • Blood culture × 2 sets before antibiotic
  • RBS/HbA1c
  • Urea/creatinine/eGFR — vancomycin, gentamicin, cephalosporin dose adjustment
  • LFT
  • Electrolytes
  • Procalcitonin — sepsis assessment; not mandatory
  • HIV/HBsAg/anti-HCV where indicated

C) Imaging

  • X-ray: baseline, fracture, chronic joint damage, osteomyelitis clue.
  • Ultrasound: effusion detect, hip/small joint aspiration guide.
  • MRI with contrast: osteomyelitis, abscess, deep joint infection, soft tissue infection.
  • CT: deep pelvic/hip/SI joint, abscess planning.
    No imaging finding is pathognomonic; X-ray baseline, ultrasound aspiration guidance, MRI osteomyelitis/soft tissue assessment-এ useful।

D) Source-specific tests

  • Urine R/M/E + culture if UTI suspected
  • Wound/pus culture
  • Echocardiography if endocarditis suspected
  • Gonorrhea/chlamydia NAAT: urine/urethral/cervical/pharyngeal/rectal sample
  • TB workup if chronic monoarthritis

6) Differential Diagnosis — কী কী disease mimic করে

  • Gout
  • Pseudogout
  • Reactive arthritis
  • Rheumatoid arthritis flare
  • Osteoarthritis flare
  • Trauma/hemarthrosis
  • Cellulitis/bursitis
  • Osteomyelitis
  • Lyme arthritis — Bangladesh-এ uncommon, travel history থাকলে
  • Tuberculous arthritis
  • Prosthetic joint infection

7) Treatment / Management — Guideline-based

Core principles

  1. Hospital admission — suspected acute septic arthritis generally inpatient care.
  2. Urgent aspiration before antibiotics — unless sepsis/shock.
  3. Joint drainage — repeated needle aspiration / arthroscopic lavage / open arthrotomy.
  4. Empiric antibiotic after sample collection.
  5. Culture-directed de-escalation after sensitivity.
  6. Pain control + immobilization initially, then early physiotherapy.
  7. Monitor CRP, fever, pain, ROM, repeat aspiration if poor response.
    Empiric antibiotic should cover S. aureus and streptococci; gram-negative coverage is added when older age, immunosuppression, bacteremia from urinary/GI source, IVDU, puncture wound, or Gram stain suggests gram-negative organism.

Usual duration

  • Non-gonococcal native joint septic arthritis: commonly 2–6 weeks, often 4–6 weeks for large joints/complicated disease.
  • MRSA septic arthritis: drainage/debridement + about 3–4 weeks total, often initial IV therapy then oral step-down when stable.
  • Gonococcal arthritis: ceftriaxone 1 g IM/IV every 24 h; switch to oral after improvement and susceptibility, total at least 7 days. CDC recommends doxycycline 100 mg orally twice daily for 7 days if chlamydia not excluded.

8) Bangladesh doctors’ commonly used prescription drug list — কী কেন ব্যবহার করা হয়

নিচের ডোজগুলো adult native joint septic arthritis ধরে দেওয়া। Renal/hepatic impairment, pregnancy, pediatric case, allergy, local antibiogram, culture sensitivity অনুযায়ী adjust করতে হবে।

8.1 Empiric regimens used in practice

A) Severe acute septic arthritis / MRSA risk / Gram stain pending

  • Vancomycin IV + Ceftriaxone IV
    • কেন: MRSA/MSSA/Strep + common gram-negative coverage.
    • Use: toxic patient, healthcare exposure, previous MRSA, severe sepsis, unknown source.

B) Gram-positive cocci on Gram stain

  • Vancomycin IV if MRSA risk high
  • Cefazolin IV or Flucloxacillin IV if MSSA likely/confirmed
    • কেন: S. aureus ও streptococci cover.

C) Gram-negative rod / elderly / UTI-GI source / immunosuppressed

  • Ceftazidime IV ± Vancomycin IV
  • Ceftriaxone IV if Enterobacterales likely and Pseudomonas risk low
    • কেন: gram-negative septic arthritis cover.

D) IVDU / puncture wound through shoe / Pseudomonas risk

  • Vancomycin IV + Ceftazidime IV
    • কেন: MRSA + Pseudomonas coverage.

E) Gonococcal arthritis

  • Ceftriaxone 1 g IM/IV q24h
  • Add Doxycycline 100 mg PO BID × 7 days if chlamydia not excluded. CDC recommends this regimen for gonococcal arthritis/arthritis-dermatitis syndrome.

F) Bite wound / mixed anaerobic infection

  • Amoxicillin + Clavulanic acid IV/PO ± Metronidazole
    • কেন: bite-related polymicrobial organism, anaerobe coverage.

9) Pharmacological drugs — Generic, class, BD brand, dose, purpose, side effect, interaction

1) Generic name: Vancomycin

  • Therapeutic category: Antibacterial
  • Pharmacological class: Glycopeptide antibiotic
  • কেন used হয়: MRSA suspected/confirmed, severe gram-positive cocci septic arthritis.
  • Adult dose: 15–20 mg/kg IV q8–12h; renal function ও therapeutic drug monitoring অনুযায়ী adjust।
  • Duration: MRSA ক্ষেত্রে সাধারণত 3–4 weeks total; clinical response/culture অনুযায়ী।
  • Bangladesh available brand examples:
    • Covan IV infusion 500 mg/vial, 1 g/vial — Renata
    • G-Vancomycin IV infusion 500 mg/vial, 1 g/vial — Gonoshasthaya
    • Vancard IV infusion 500 mg/vial, 1 g/vial — Techno Drugs
    • Vancomin IV infusion 500 mg/vial, 1 g/vial — Opsonin
    • Vanmycin IV infusion 500 mg/vial, 1 g/vial — Incepta
  • Side effects: nephrotoxicity, red man syndrome, ototoxicity, neutropenia, thrombophlebitis.
  • Important interactions: aminoglycoside, amphotericin B, loop diuretic, NSAID → nephro/ototoxicity risk; monitor creatinine.
  • Purpose summary: Empiric MRSA cover until culture result.

2) Generic name: Ceftriaxone

  • Therapeutic category: Antibacterial
  • Pharmacological class: 3rd generation cephalosporin
  • কেন used হয়: gonococcal septic arthritis; gram-negative coverage; empiric combination with vancomycin.
  • Adult dose:
    • Non-gonococcal suspected: 2 g IV q24h commonly used.
    • Gonococcal arthritis: 1 g IM/IV q24h.
  • Duration: Gonococcal ≥7 days; non-gonococcal usually 2–6 weeks depending source/culture.
  • Bangladesh available brand examples:
    • Ceftriaxone brands include Ceftrimax IM/IV 500 mg, 1 g, 2 g; Ceftron IV 500 mg, 1 g, 2 g; Dicephin IM/IV 250 mg, 500 mg, 1 g, 2 g; Topcef IM/IV 250 mg, 500 mg, 1 g, 2 g; Trax IM/IV 250 mg, 500 mg, 1 g; Tribac IV 250 mg, 500 mg, 1 g, 2 g.
  • Side effects: diarrhea, rash, biliary sludge, injection pain, hypersensitivity, C. difficile diarrhea.
  • Interactions: calcium-containing IV solution in neonates contraindicated; warfarin effect may increase; avoid unnecessary combination with bacteriostatic drugs when severe infection.
  • Purpose summary: Gram-negative/gonococcal coverage.

3) Generic name: Flucloxacillin

  • Therapeutic category: Antibacterial
  • Pharmacological class: Penicillinase-resistant anti-staphylococcal penicillin
  • কেন used হয়: MSSA confirmed/suspected septic arthritis; MRSA cover করে না।
  • Adult dose: Severe MSSA infection: 1–2 g IV q6h; oral step-down 500 mg PO q6h if stable and susceptible.
  • Duration: Usually 4–6 weeks total for large native joint; culture/response অনুযায়ী।
  • Bangladesh available brand examples:
    • Fluclox capsule 250 mg/500 mg and IM/IV injection 250 mg/vial, 500 mg/vial — ACI
    • Flux capsule 250 mg/500 mg and IM/IV injection 250 mg/vial, 500 mg/vial — Opsonin
    • Flucloxin capsule 250 mg/500 mg and IM/IV injection 500 mg/vial — Eskayef
    • Phylopen capsule 250 mg and IM/IV injection 500 mg/vial — Square
  • Side effects: rash, diarrhea, cholestatic hepatitis, neutropenia, interstitial nephritis, anaphylaxis.
  • Interactions: warfarin INR alteration; methotrexate clearance reduce; probenecid increases penicillin level.
  • Purpose summary: Narrow, targeted MSSA therapy after culture.

4) Generic name: Cefazolin

  • Therapeutic category: Antibacterial
  • Pharmacological class: 1st generation cephalosporin
  • কেন used হয়: MSSA/Streptococcal septic arthritis; flucloxacillin alternative; good bone/joint penetration.
  • Adult dose: 2 g IV q8h; severe/high body weight case may need adjustment.
  • Duration: Usually 4–6 weeks total depending joint/source.
  • Bangladesh available brand examples:
    • Cefazol IM/IV injection 500 mg/vial, 1 g/vial — Incepta
    • Cefazoline Panpharma IM/IV 1 g/5 ml — City Overseas
    • Zolibac IM/IV 1 g/vial — Square
  • Side effects: allergy, diarrhea, C. difficile, neutropenia, transaminitis.
  • Interactions: warfarin bleeding risk; probenecid increases cephalosporin levels.
  • Purpose summary: Culture-directed MSSA/Strep therapy.

5) Generic name: Ceftazidime

  • Therapeutic category: Antibacterial
  • Pharmacological class: 3rd generation cephalosporin with antipseudomonal activity
  • কেন used হয়: Gram-negative rod, Pseudomonas risk, IVDU, puncture wound, immunosuppressed patient.
  • Adult dose: 2 g IV q8h; renal dose adjustment essential.
  • Duration: Usually 4–6 weeks for confirmed gram-negative septic arthritis.
  • Bangladesh available brand examples:
    • Maxidim IM/IV 500 mg/vial, 1 g/vial — Beximco
    • Serozid IM/IV 250 mg, 500 mg, 1 g — Opsonin
    • Sidobac IM/IV 250 mg, 500 mg, 1 g — Incepta
    • Tazid IM/IV 250 mg, 500 mg, 1 g — Square
    • Trizidim IM/IV 250 mg, 500 mg, 1 g — ACME
  • Side effects: diarrhea, rash, C. difficile, seizure risk in renal failure, cytopenia.
  • Interactions: aminoglycoside/loop diuretic with renal risk; warfarin effect may increase.
  • Purpose summary: Pseudomonas/gram-negative coverage.

6) Generic name: Gentamicin

  • Therapeutic category: Antibacterial
  • Pharmacological class: Aminoglycoside
  • কেন used হয়: Severe gram-negative sepsis/septic arthritis-এ short adjunct; monotherapy নয়।
  • Adult dose: 5–7 mg/kg IV/IM q24h extended-interval or 1–1.5 mg/kg q8h; renal function/drug level monitor।
  • Duration: Usually 3–5 days adjunct, longer হলে toxicity monitoring mandatory.
  • Bangladesh available brand examples:
    • G-Gentamicin IM/IV 40 mg/2 ml, 80 mg/2 ml — Gonoshasthaya
    • Gentasol IM/IV 80 mg/2 ml — Techno Drugs
  • Side effects: nephrotoxicity, ototoxicity, vestibular toxicity, neuromuscular blockade.
  • Interactions: vancomycin, amphotericin B, loop diuretics, NSAIDs → renal/ototoxicity risk; avoid with myasthenia gravis.
  • Purpose summary: Severe gram-negative coverage as short adjunct.

7) Generic name: Clindamycin

  • Therapeutic category: Antibacterial
  • Pharmacological class: Lincosamide
  • কেন used হয়: Penicillin allergy, susceptible MSSA/Strep, oral step-down option; toxin suppression in some soft-tissue infections.
  • Adult dose: 600–900 mg IV q8h; oral 300–450 mg PO q6–8h.
  • Duration: Culture/response অনুযায়ী total 2–6 weeks.
  • Bangladesh available brand examples:
    • Clindacin IM/IV 300 mg/2 ml; capsule 150 mg — Incepta
    • Clindax capsule 150 mg/300 mg; IM/IV 300 mg/2 ml, 600 mg/4 ml — Opsonin
    • Daclin capsule 150 mg/300 mg — ACI
    • Dalacin C capsule 300 mg — Pfizer/Janata Traders
    • Dalatic IM/IV 300 mg/2 ml, 600 mg/4 ml; capsule 300 mg — Drug International
  • Side effects: diarrhea, C. difficile colitis, rash, hepatotoxicity, neutropenia.
  • Interactions: erythromycin antagonism; neuromuscular blockers effect increase; CYP3A4 inducer/inhibitor effects.
  • Purpose summary: Susceptible gram-positive infectionে alternative/step-down.

8) Generic name: Ciprofloxacin

  • Therapeutic category: Antibacterial
  • Pharmacological class: Fluoroquinolone
  • কেন used হয়: Susceptible gram-negative septic arthritis, oral step-down; Pseudomonas susceptible হলে useful.
  • Adult dose: 400 mg IV q12h or 500–750 mg PO q12h.
  • Duration: Usually culture-directed 2–6 weeks.
  • Bangladesh available brand examples:
    • Maprocin tablet 750 mg — Orion
    • Maprocin DS IV infusion 400 mg/100 ml — Orion Infusion
    • Monipro tablet 500 mg; suspension 250 mg/5 ml — Monicopharma
  • Side effects: tendinopathy/tendon rupture, QT prolongation, dysglycemia, CNS effect, GI upset, C. difficile.
  • Interactions: antacid/iron/zinc/calcium reduce absorption; warfarin INR increase; steroid + fluoroquinolone → tendon rupture risk; QT drugs.
  • Purpose summary: Gram-negative oral/IV option when susceptibility confirmed.

9) Generic name: Linezolid

  • Therapeutic category: Antibacterial
  • Pharmacological class: Oxazolidinone
  • কেন used হয়: MRSA/VRE infection; vancomycin unsuitable বা oral MRSA step-down where culture supports.
  • Adult dose: 600 mg IV/PO q12h.
  • Duration: Usually 2–4 weeks with CBC monitoring; prolonged use specialist-guided.
  • Bangladesh available brand examples:
    • Linlid tablet 400 mg/600 mg, suspension 100 mg/5 ml — Team
    • Linvox IV infusion 2 mg/ml — Orion Infusion
    • Linzolid IV infusion 2 mg/ml, tablet 400/600 mg — Incepta
    • Lizid tablet 400/600 mg — Radiant
    • Lizolix tablet 400/600 mg — Eskayef
  • Side effects: thrombocytopenia, anemia, peripheral/optic neuropathy, lactic acidosis, serotonin syndrome.
  • Interactions: SSRI/SNRI/TCA/MAOI/tramadol → serotonin syndrome; sympathomimetics → hypertension; monitor CBC weekly.
  • Purpose summary: Oral bioavailability excellent; MRSA step-down option.

10) Generic name: Doxycycline

  • Therapeutic category: Antibacterial
  • Pharmacological class: Tetracycline
  • কেন used হয়: Gonococcal arthritis-এ chlamydia not excluded হলে add-on; septic arthritis monotherapy নয়।
  • Adult dose: 100 mg PO BID × 7 days for possible chlamydia coinfection.
  • Bangladesh available brand examples:
    • Apdox capsule 100 mg — Apex
    • Aristodox capsule 100 mg — Aristopharma
    • Doxacil capsule 100 mg — Square
    • Doxicap capsule 50 mg/100 mg — Renata
    • Doxin capsule 50 mg/100 mg — Opsonin
    • Doxy-A capsule 100 mg — ACME
  • Side effects: gastritis/esophagitis, photosensitivity, teeth discoloration in children, hepatotoxicity rarely.
  • Interactions: antacid/iron/calcium reduce absorption; warfarin effect increase; avoid pregnancy and children <8 years unless special indication.
  • Purpose summary: Chlamydia coinfection coverage.

11) Generic name: Amoxicillin + Clavulanic acid

  • Therapeutic category: Antibacterial
  • Pharmacological class: Aminopenicillin + beta-lactamase inhibitor
  • কেন used হয়: Bite wound, polymicrobial infection, anaerobe/mixed flora, oral step-down where susceptible.
  • Adult dose: IV 1.2 g q8h; PO 625 mg q8h or 875/125 mg q12h.
  • Duration: Source/culture অনুযায়ী; bite-related joint infection often prolonged and drainage needed.
  • Bangladesh available brand examples:
    • Clacido IV 600 mg vial, 1.2 g vial; tablet 875/125 mg — Healthcare
    • Clamox IV 600 mg vial, 1.2 g vial — Opsonin
    • Tyclav tablet 250/125 mg, 875/125 mg; IV 600 mg, 1.2 g — Beximco
  • Side effects: diarrhea, cholestatic jaundice, rash, anaphylaxis, candidiasis.
  • Interactions: warfarin INR increase; allopurinol rash risk; methotrexate toxicity risk.
  • Purpose summary: Polymicrobial/bite-related coverage.

12) Generic name: Metronidazole

  • Therapeutic category: Antibacterial/antiprotozoal
  • Pharmacological class: Nitroimidazole
  • কেন used হয়: Anaerobic infection suspected হলে add করা হয়; routine uncomplicated septic arthritis-এ লাগে না।
  • Adult dose: 500 mg IV/PO q8h.
  • Duration: Anaerobic source/culture অনুযায়ী।
  • Bangladesh available brand examples:
    • Flamyd IV 500 mg/100 ml — Incepta
    • Librazol IV 500 mg/100 ml — Libra
    • Metrion tablet 400 mg, IV 500 mg/100 ml — General
    • Nidazyl tablet 400 mg, suspension 200 mg/5 ml, IV 500 mg/100 ml — Orion
    • Mez IV 500 mg/100 ml — Renata
  • Side effects: metallic taste, nausea, neuropathy with prolonged use, disulfiram-like reaction with alcohol.
  • Interactions: alcohol, warfarin, lithium, disulfiram.
  • Purpose summary: Anaerobe coverage.

13) Generic name: Paracetamol / Acetaminophen

  • Therapeutic category: Analgesic/antipyretic
  • Pharmacological class: Para-aminophenol derivative
  • কেন used হয়: Pain + fever control; infection cure করে না।
  • Adult dose: 500–1000 mg PO/IV q6h; max usually 3–4 g/day, liver disease/alcohol use হলে lower max.
  • Bangladesh available brand examples:
    • Fibi tablet 500 mg — MST
    • G-Paracetamol tablet 500 mg; syrup/suspension 120 mg/5 ml — Gonoshasthaya
    • Nova tablet 500 mg; suspension 120 mg/5 ml — Cosmic
  • Side effects: hepatotoxicity in overdose, rash rare.
  • Interactions: alcohol, warfarin with prolonged high dose, other paracetamol-containing combination products.
  • Purpose summary: Safe baseline analgesic/antipyretic.

14) Generic name: Diclofenac sodium

  • Therapeutic category: Analgesic/anti-inflammatory
  • Pharmacological class: NSAID, COX inhibitor
  • কেন used হয়: Joint pain/inflammation relief; antibiotic/drainage-এর substitute নয়।
  • Adult dose: 50 mg PO BID/TID after food; IM 75 mg once daily, rarely BID for very short duration.
  • Duration: shortest possible; renal/GI/CV risk evaluate.
  • Bangladesh available brand examples:
    • G-Diclofenac tablet 50 mg; IM injection 75 mg/3 ml — Gonoshasthaya
    • Genac tablet 50 mg; IM injection 75 mg/3 ml — Globe
  • Side effects: gastritis, GI bleed, renal injury, hypertension, edema, CV risk, bronchospasm in NSAID-sensitive asthma.
  • Interactions: anticoagulant/antiplatelet/steroid → GI bleed; ACEi/ARB/diuretic → AKI; lithium/methotrexate toxicity.
  • Purpose summary: Pain relief only; renal sepsis patientে cautious.

10) Complications — রোগের জটিলতা

  • Cartilage destruction: infection-এর enzyme cartilage গলিয়ে joint surface নষ্ট করে।
  • Permanent stiffness: joint movement কমে যায়, daily activity বাধাগ্রস্ত হয়।
  • Secondary osteoarthritis: infection heal হলেও joint degenerative change থেকে chronic pain থাকে।
  • Osteomyelitis: infection bone-এ ছড়িয়ে পড়ে।
  • Abscess/sinus: pus collection বা draining sinus হতে পারে।
  • Sepsis/septic shock: bacteria bloodstream-এ ছড়িয়ে life-threatening shock করতে পারে।
  • Endocarditis: bacteremia থাকলে heart valve infection হতে পারে।
  • Growth plate damage: শিশুতে limb length discrepancy/deformity হতে পারে।
  • Prosthetic joint failure: prosthesis থাকলে revision surgery লাগতে পারে।
  • Death: delayed diagnosis/treatment হলে mortality risk বাড়ে।

11) Prevention — প্রতিরোধ কীভাবে করবেন

  • Skin infection, cellulitis, diabetic foot ulcer দ্রুত treat করুন।
  • Joint injection/aspiration strictly aseptic technique-এ করুন।
  • Active cellulitis/bacteremia থাকলে elective intra-articular steroid injection এড়ানো উচিত।
  • Diabetes control, foot care, wound care।
  • IV drug use harm-reduction; non-sterile injection avoid।
  • STI prevention: condom, partner notification, gonorrhea/chlamydia screening/treatment।
  • Prosthetic joint patient-এ unexplained fever বা painful prosthetic joint হলে early evaluation।
  • Routine dental/urologic/GI procedure-এর জন্য prosthetic joint infection prevention হিসেবে prophylactic antibiotic সাধারণত recommended নয়; AAFP review-এ routine outpatient procedures-এর জন্য prophylaxis recommended নয় বলে উল্লেখ আছে।

Overview / Summary

  • Septic arthritis হলো joint infection; acute hot painful swollen joint = emergency।
  • সবচেয়ে common organism: Staphylococcus aureus, তারপর Streptococcus।
  • Diagnosis confirm করতে synovial fluid Gram stain, culture, WBC differential, crystal analysis জরুরি।
  • Main treatment: urgent drainage + antibiotic + culture-guided de-escalation।
  • Empiric antibiotic সাধারণত Vancomycin ± Ceftriaxone/Ceftazidime; MSSA confirmed হলে Flucloxacillin/Cefazolin; gonococcal হলে Ceftriaxone 1 g q24h ± Doxycycline।
  • Delayed treatment করলে permanent joint damage, osteomyelitis, sepsis ও death হতে পারে।

Actionable Plan / Steps

  1. Suspect: acute monoarthritis + painful passive ROM হলে septic arthritis ধরে নিন।
  2. Before antibiotic: blood culture ×2 + urgent joint aspiration.
  3. Send synovial fluid: cell count, PMN%, Gram stain, culture/sensitivity, crystal.
  4. Start empiric antibiotic: MRSA/Strep cover ± gram-negative cover based on risk.
  5. Drain joint: repeated aspiration/arthroscopic lavage/open drainage depending joint and response.
  6. Review at 24–48 h: fever, pain, CRP, culture result, drainage adequacy.
  7. De-escalate: culture sensitivity অনুযায়ী narrow antibiotic.
  8. Continue therapy: usually 2–6 weeks; MRSA/gonococcal/special organisms অনুযায়ী duration modify.
  9. Rehabilitation: acute pain কমলে physiotherapy + ROM exercise.
  10. Prevent recurrence: source control—skin, urinary, STI, diabetic foot, prosthesis evaluation.

Reference List — Textbook + Guideline + DOI

  1. Harrison’s Principles of Internal Medicine, 21st ed. Chapter: Infectious Arthritis / Septic Arthritis. McGraw Hill.
  2. Davidson’s Principles and Practice of Medicine, 24th ed. Musculoskeletal infection/rheumatology sections. Elsevier.
  3. Mandell, Douglas, and Bennett’s Principles and Practice of Infectious Diseases, 9th ed. Bone and joint infections. Elsevier.
  4. Katzung & Trevor’s Basic & Clinical Pharmacology, latest ed. Antibacterial agents: beta-lactams, glycopeptides, aminoglycosides, fluoroquinolones, oxazolidinones.
  5. Ravn C, et al. Guideline for management of septic arthritis in native joints (SANJO). Journal of Bone and Joint Infection. 2023;8:29–37. DOI: 10.5194/jbji-8-29-2023.
  6. Earwood JS, Walker TR, Sue GJC. Septic Arthritis: Diagnosis and Treatment. American Family Physician. 2021;104(6):589–597.
  7. CDC. Sexually Transmitted Infections Treatment Guidelines, 2021 — Gonococcal arthritis regimen. Ceftriaxone 1 g IM/IV q24h; add doxycycline if chlamydia not excluded. DOI: 10.15585/mmwr.rr7004a1.
  8. Wu KA, Kugelman DN, Seidelman JL, Seyler TM. Native Joint Septic Arthritis. Antibiotics. 2024;13(7):596. DOI: 10.3390/antibiotics13070596.

Md.Rafiqul Islam Lipu,Date:-15-06-2026 Tuesday,Time:-12-07-12 Pm

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