15 results
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
Responsible for Infective ... bacilli - Fungi (Candida ... , Aspergillus, Histoplasma ... ) - Culture negative ... Pathogens #Diagnosis #Differential
My Patient with Infective Endocarditis (IE) Has Negative Blood Cultures
 - Did they receive antibiotics prior
My Patient with Infective ... Negative Blood Cultures ... Fungal (Histoplasma/Aspergillus ... patient a surgical candidate ... Ahmed_HBabiker #Infective
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
Causes of blood culture ... negative infective ... whipplei, Fungi (Aspergillus ... , Candida), Mycoplasma ... BCNIE #Causes #differential
Morphology and Descriptions of Fungal Infections with Hyphae or Pseudohyphae in Tissues
Yeasts with Pseudohyphae: 
 •
Consistent with Candida ... spp. however Aspergillus ... Consistent with Aspergillus ... #microbiology #differential ... septations #pathology #atlas
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... Infective Endocarditis ... whipplei, Fungi (Aspergillus ... , Candida), Mycoplasma ... Endocarditis #diagnosis #differential
Morphology and Descriptions of Endemic Fungal Infections with Yeasts in Tissues
Broad-based budding yeasts:
 • Description: Broad-based
Cryptococcus, and Aspergillus ... spp. however Aspergillus ... Consistent with Aspergillus ... #microbiology #differential ... morphology #pathology #atlas
Morphology and Descriptions of Endemic Fungal Infections with Yeasts in Tissues
Broad-based budding yeasts:
 • Description: Broad-based
Coccidioides spp, Candida ... Cryptococcus, and Aspergillus ... , Histoplasma, Candida ... pathology #clinical #atlas ... #microbiology #differential
Causes of Dysuria - Differential Diagnosis Algorithm
Pyuria - Leukocytes on Dipstick/Microscopy
 - Bacteriuria & Hematuria -
Causes of Dysuria - Differential ... Leukocytes on Dipstick/Microscopy ... Urinary Tract Infection ... Urinary Tract Infection ... Vaginitis • Candida
Fungal Biomarkers: Beta-D-Glucan and Aspergillus Galactomannan
Beta-D-Glucan:
 • Polysaccharide cell wall component of many fungi
 • Pathogens:
Beta-D-Glucan and Aspergillus ... • Pathogens: Candida ... , Aspergillus ... invasive fungal infection ... BAL GM does not differentiate
Endocarditis Summary

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV substance use
• IV catheter
• Recent
Hypercoagulable (APLAS ... 90% of IE cases Culture ... Tropheryma Whipplei • Aspergillus ... Marantic (NTBE) Differential ... • Blood cultures