20 results
Epidemiological Clues That May be Helpful in Defining the Etiological Diagnosis of Culture-Negative Endocarditis

#Endocarditis #Bacteria #Differential
Epidemiological Clues ... Diagnosis of Culture-Negative ... Endocarditis ... #Endocarditis #Bacteria ... #Differential #
My Patient with Infective Endocarditis (IE) Has Negative Blood Cultures
 - Did they receive antibiotics prior
with Infective Endocarditis ... Blood Cultures ... therapy - Number one cause ... have a fastidious bacteria ... this be a non-bacterial
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
Causes of blood ... culture negative ... infective endocarditis ... under BCNIE, these bacteria ... #differential #
Infective endocarditis - etiology and sources of infection. 
 • Native and prosthetic 
valve endocarditis
 •
Infective endocarditis ... • Native and ... #Sources #Causes ... #Bacteria #Etiology ... #Differential #
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... Infective Endocarditis ... but important causes ... #Infective #Endocarditis ... #diagnosis #differential
Differentiating NBTE from Infective Endocarditis
No pathognomonic signs/symptoms or echo features that are specific to NBTE, and
Features of Non-Bacterial ... serology: Serial negative ... Frequent false-negative ... cultures/serology: + (Negative ... in up to 30% of cases
Endocarditis Summary

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV substance use
• IV catheter
• Recent
Microbiology: Blood ... • Coagulase-negative ... Marantic (NTBE) Differential ... • Blood cultures ... • Persistent bacteremia
Differential Diagnosis for Concurrent Brain and Lung Infections
 • Bacteria: Strep anginosus, Staph aureus, Klebsiella pneumoniae
Differential Diagnosis ... for Concurrent ... Infections • Bacteria ... phenomena from endocarditis ... Diagnosis #causes
Fever Patterns - Differential Diagnosis Framework

Continuous Fever:
Temp > 38°C with only 1 degree fluctuation in 24
Fever Patterns - Differential ... • Typhus, gram-negative ... Non-Infectious Causes ... Associated with Relative ... Fever #Patterns #Differential
Concurrent Brain and Lung Lesions
 • Bacteria: Nocardia spp, Strep anginosus, Staph aureus, Klebsiella pneumoniae (hypervirulent),
Concurrent Brain ... Lung Lesions • Bacteria ... phenomena from endocarditis ... #Differential # ... Diagnosis #causes