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Typical Clinical Presentations of Septic Arthritis by Pathogen and Joint Involvement

#Diagnosis #Septic #Arthritis #Differential #History #Presentation
Typical Clinical ... Involvement #Diagnosis ... Presentation #Pathogen #Bacteria
Septic Arthritis - Pathogens and Clinical Clues

Staphylococcus aureus 
Streptococcal spp. 
Neisseria gonorrhoeae 
Aerobic/Anaerobic 
Gram-negative bacteria 
Brucellosis
Pathogens and Clinical ... Gram-negative bacteria ... #Differential #Diagnosis
Purple Urine Bag Syndrome
Chronic, indwelling catheter + bacteriuria (Providencia, Klebsiella, E.coli*) + alkaline urine
Tryptophan → Indoxyl
Sulfatase enzyme (bacteria ... pathophysiology #clinical ... #differential #diagnosis
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
recovery rate of bacteria ... intra-cellular bacteria ... antimicrobials, clinical ... BCNIE Diagnostic ... #Endocarditis #diagnosis
Aortitis - Diagnosis and Workup
Clinical History:
 - Fever, weight loss, deterioration of general health
 - Aortic
Aortitis - Diagnosis ... and Workup Clinical ... Mycobacterium, Pyogenic bacteria ... #Aortitis #Diagnosis
Primary Syphilis
Usually, a single ulcer (chancre) appears at the site where the bacteria entered the body.
site where the bacteria ... contains syphilis bacteria ... the T. pallidum bacteria ... Syphilis #Chancres #Diagnosis ... #Clinical #Photo
Miliary Pattern - Chest Radiology
 • Miliary opacities are scattered, small (1 -4 mm) nodules
 •
Differential Diagnosis ... - Select Bacteria ... #differential #diagnosis ... pulmonary #CXR #clinical
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
Lung Abscess - Diagnosis ... Lung Abscess - Clinical ... Lung Abscess Diagnosis ... Pathogens: • Aerobic Bacteria ... • Anaerobic Bacteria
Hemophagocytic Lymphohistiocytosis (HLH)
Pathophysiology: Triggering factor (infection,...)→Activation of CD8 T cells (IFN-y) → Excessive activation of macrophages
Auto-amplification loop Diagnosis ... accumulation of clinical ... Assessment • Clinical ... CMV, HHV8,...), Bacteria ... Lymphohistiocytosis #diagnosis
Emphysematous Cystitis
Epidemiology:
 • Usually middle-aged diabetic women
 • Other RF: neurogenic bladder, urinary tract outlet obstruction,
immune compromise Clinical ... Pathophysiology: • Bacteria ... pneumoniae, proteus Diagnosis ... is needed for diagnosis ... Emphysematous #Cystitis #diagnosis