12 results
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
Causes of blood ... Tropheryma whipplei, Fungi ... (Aspergillus, Candida ... under BCNIE, these bacteria ... #CNIE #BCNIE #cardiology
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
Gram-negative bacilli - Fungi ... (Candida, Aspergillus ... Histoplasma) - Culture ... streptococci - Culture ... #Endocarditis #Bacteria
Transplant Infections Timeline
Pre-transplant:
 • Common bacteria (endogenous): Staphylococci (skin), Gram-negative bacilli (gut)
 • Viruses: HSV (reactivation)
Engraftment:
difficile (gut) • Fungi ... : Candida spp. ... (mucosa), Aspergillus ... : Aspergillus spp ... differential #diagnosis #causes
My Patient with Infective Endocarditis (IE) Has Negative Blood Cultures
 - Did they receive antibiotics prior
therapy - Number one cause ... have a fastidious bacteria ... this be a non-bacterial ... Fungal (Histoplasma/Aspergillus ... patient a surgical candidate
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
or fungi (grows ... but important causes ... Tropheryma whipplei, Fungi ... (Aspergillus, Candida ... ) and 18S ( fungi
Aortitis - Differential Diagnosis Framework
Non-Infectious Aortitis:
 • Vasculitides: Giant Cell Arteritis (GCA), Takayasu's arteritis, Cogan's Syndrome,
• Most common bacterial ... causes include: ... M.tuberculosis, M. bovis • Fungi ... : Candida, Cryptococcus ... , Aspergillus, Histoplasma
Causes of Pericardial Effusion - Differential Diagnosis
Infectious:
 • Viral: Enterovirus, Herpesvirus, Adenovirus, Parvovirus
 • Bacterial: Mycobacterium
Causes of Pericardial ... Parvovirus • Bacterial ... : Histoplasma, Aspergillus ... , Blastomyces, Candida ... #cardiology
Causes of Myocarditis
Infectious Etiologies:
 • Viral agents: Adenoviruses, Enteroviruses (coxsackievirus), Herpesviruses (human herpesvirus 6, Epstein—Barr virus),
Causes of Myocarditis ... Schistosomiasis • Bacterial ... Fungal agents: Aspergillus ... species, Candida ... differential #diagnosis #cardiology
Alternaria on Culture Plate and Microscopy
Adult w/ aplastic anemia, getting regular blood product infusions. Had Group
Plate and Microscopy ... Group B Strep bacteremia ... environmental fungi ... (that can cause ... #Microscopy #clinical
Endocarditis Summary

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV substance use
• IV catheter
• Recent
Hypercoagulable (APLAS ... Tropheryma Whipplei • Aspergillus ... Septic Emboli Cause ... • Persistent bacteremia ... diagnosis #management #cardiology