9 results
My Patient with Infective Endocarditis (IE) Has Negative Blood Cultures
 - Did they receive antibiotics prior
with Infective Endocarditis ... Fungal (Histoplasma/Aspergillus ... patient a surgical candidate ... BloodCultures #Diagnosis ... #Management #Algorithm
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
for Infective Endocarditis ... bacilli - Fungi (Candida ... , Aspergillus, Histoplasma ... ) - Culture negative ... Bacteria #Pathogens #Diagnosis
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
negative infective endocarditis ... whipplei, Fungi (Aspergillus ... , Candida), Mycoplasma ... #differential #diagnosis ... #negative #Endocarditis
Endocarditis Summary

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV substance use
• IV catheter
• Recent
Hypercoagulable (APLAS ... Tropheryma Whipplei • Aspergillus ... Differential Diagnosis ... Diagnosis? ... #diagnosis #management
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Infective Endocarditis ... whipplei, Fungi (Aspergillus ... , Candida), Mycoplasma ... BCNIE Diagnostic ... #diagnosis #differential
Endocarditis - Overview and Differential Diagnosis Framework

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV
and Differential Diagnosis ... Hypercoagulable (APLAS ... Tropheryma Whipplei • Aspergillus ... Marantic (NTBE) Diagnosis ... #Differential #Diagnosis
Important Fungal Stains
Mycology Lab:
 • Calcofluor white - Fluorochrome that binds glucans and chitin in fungal
preparation from culture ... exceptions are Aspergillus ... #microbiology #microscopy ... #staining #diagnosis ... fungus #comparison #table
Suspected catheter-related bloodstream infection - Management Algorithm
 • Temperature 37.8 C   • Rigors
Obtain blood cultures ... Hemodynamically stable ... metastatic infection (endocarditis ... Hernodynamically stable ... Algorithm #CRBSI #diagnosis
Mycoses

HISTOPLASMOSIS
• Inhalation of conidia → Yeast → travel to lymph nodes → spread in body
• Bird
• Confirmed by culture ... ASPERGILLOSIS • Aspergillus ... : • Culture of ... arthritis, and endocarditis ... #Management #Infections