31 results
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
Causes of blood ... culture negative ... #culture #negative ... #Endocarditis #InfectiousDiseases ... #CNIE #BCNIE #cardiology
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... antimicrobials, clinical ... but important causes ... factors: - Serology ... differential #workup #infectiousdiseases
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
Causes of Culture ... antibiotics as a cause ... of a negative culture ... Dracunculiasis - Non-Infectious ... Differential #Diagnosis #InfectiousDiseases
Tuberculosis Testing

LATENT TB
• LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
result with no clinical ... because false-negative ... Mycobacterial culture ... Mycobacterial culture ... LatentTB #ActiveTB #InfectiousDiseases
Bandemia Overview

Normal: < 1%
Clinically significant: > 10%

Band neutrophils are slightly less mature than segmented neutrophils and
Normal: < 1% Clinically ... likelihood of negative ... clinical outcomes ... relative to both ... CBC #hematology #pathophysiology
Differentiating NBTE from Infective Endocarditis
No pathognomonic signs/symptoms or echo features that are specific to NBTE, and
high index of clinical ... negative blood ... /serology: + (Negative ... in up to 30% of cases ... large infarct - Infectious
Septic Arthritis: Pathogenesis and clinical findings
Notes:
- Septic Arthritis is typically monoarticular & the knee is involved
Pathogenesis and clinical ... & often a +ve culture ... : - Bacterial infection ... S.A. can also be caused ... SepticArthritis #pathophysiology
Capnocytophaga Canimorsus Skin Rash

40 M presents w/ N, V, severe epigastric pain. SHx: smoker, drinks 18
dogs & latter can cause ... fastidious gram-negative ... bacillus cause ... Myocarditis & culture-negative ... is difficult to culture
Bell's Palsy
Bell’s Palsy is a damage, acute weakness, or paralysis of the Facial nerve (7th CN),
an identifiable cause ... but its clinically ... associated with viral infections ... #Bells #Palsy #neurology ... #anatomy #pathophysiology
Tularemia - Diagnosis and Management Summary
Francisella tularensis - Aerobic fastidious gram-negative Coccobacillus - Zoonotic Infection
 •
fastidious gram-negative ... Coccobacillus - Zoonotic Infection ... conditions Diagnosis: Serology ... (preferred), Culture ... management #treatment #infectiousdiseases