5 results
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
culture negative ... infective endocarditis ... , these bacteria ... #Causes #differential ... #culture #negative
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
Endocarditis Summary

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV substance use
• IV catheter
• Recent
• Coagulase-negative ... Septic Emboli Cause ... (NTBE) Differential ... Paradoxical emboli via ASD ... • Persistent bacteremia
Differentiating NBTE from Infective Endocarditis
No pathognomonic signs/symptoms or echo features that are specific to NBTE, and
Features of Non-Bacterial ... valves • MRI brain ... in up to 30% of cases ... often seen • MRI brain ... infective #NBTE #Marantic
Endocarditis - Overview and Differential Diagnosis Framework

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV
and Differential ... Negative: • Bartonella ... Treat underlying cause ... • Persistent bacteremia ... #Differential #