Septic Arthritis Viva Quiz

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What is the initial therapy for necrotizing fasciitis?

Broad-spectrum coverage of Gram positive, Gram negative, and anaerobic organisms

How is acute pyogenic osteomyelitis classified based on duration?

Acute

What is the source of acute pyogenic osteomyelitis in hematogenous spread?

Spread through bloodstream

What is the route of infection for exogenous acute pyogenic osteomyelitis?

E. organism access after bone trauma/surgery/adjacent site of infection Signup and view all the answers

What happens in chronic osteomyelitis at a favorable site for bacterial proliferation?

Local hematoma formation Signup and view all the answers

What is the pathogenesis of pus spread in acute osteomyelitis?

Pus spreads along the bone length causing Osteonecrosis Signup and view all the answers

What is the diagnostic procedure used for microbiologic diagnosis in septic arthritis?

Needle aspiration/ surgical specimen - swab/ wound draining - Blood cultures Signup and view all the answers

Describe the pathologic features of septic arthritis similar to osteomyelitis.

Similar pathologic features include rapid progress of pathologic changes, spread of infection from metaphysis to joint, and potential life-threatening septicemia. Signup and view all the answers

What is the causative agent for septic arthritis from trauma or surgery?

Streptococci & Staphylococci Signup and view all the answers

What is the treatment approach for reactive arthritis?

No specific treatment, only help relieve pain and stiffness Signup and view all the answers

Which pathogens can cause prosthetic joint infection?

S.aureus, staphylococci, s.epidermidis Signup and view all the answers

Define viral exanthem and enanthem.

Viral exanthem is an acute generalized skin eruption, while enanthem is an eruption on the oral mucous lesion. Signup and view all the answers

What are the characteristic symptoms of staphylococcal scalded skin syndrome?

Erythema, edema, warmth, tender, fever, abscess, lymphadenopathy Signup and view all the answers

What is the causative agent responsible for necrotizing fasciitis?

Mainly Streptococcus Pyogenes and Staphylococcus aureus, often polymicrobial with mixed anaerobic bacteria Signup and view all the answers

What is the mechanism of action of epidermolytic toxin (ETA/ETB) in staphylococcal scalded skin syndrome?

Causes breakdown of desmosomes at the stratum granulosum Signup and view all the answers

What is Nikolsky’s sign, and in which condition is it positive?

Epidermal layer separation with gentle stroking; positive in staphylococcal scalded skin syndrome Signup and view all the answers

What is the management approach for necrotizing fasciitis?

Removal of necrotic tissues, emergency amputation, IV antibiotics Signup and view all the answers

What is the diagnostic procedure known as the NF-finger test used for, and how is it performed?

Diagnosis of necrotizing fasciitis; involves a 2cm vertical incision where murky, foul-smelling fluid emanates if positive Signup and view all the answers