21 results
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
negative infective ... nutritionally variant ... BCNIE #Causes #differential ... #InfectiousDiseases ... #Microbiology #
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
Histoplasma) - Culture ... negative bacilli ... streptococci - Culture ... Pathogens #Diagnosis #Differential ... #InfectiousDiseases
Causes of Primary and Secondary Amenorrhea - Differential Diagnosis Algorithm
Primary Amenorrhea - No onset of menarche
Secondary Amenorrhea - Differential ... Normal FSH • Ovarian ... Hypothalamic - Negative ... Secondary #Amenorrhea #Differential ... Causes #OBGyn #Gynecology
Blood culture contaminants
Grouped by gram negative vs gram positive vs other as well as never/maybe/probably
Some additional
Blood culture contaminants ... Grouped by gram negative ... #Infections #Microbiology ... #Micro #Differential
Causes of Secondary Amenorrhea - Differential Diagnosis Algorithm
Absence of menses for more than 3 cycles or
Secondary Amenorrhea - Differential ... menstruating Ovarian ... Hypothalamic - Negative ... Secondary #Amenorrhea #Differential ... Causes #OBGyn #Gynecology
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
Causes of Culture ... Negative Abscess ... - Differential ... #Differential # ... Diagnosis #InfectiousDiseases
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... remain negative ... nutritionally variant ... Endocarditis #diagnosis #differential ... #workup #infectiousdiseases
Psittacosis 
Pathogen: Chlamydia psittaci - obligate intracellular gram negative
Transmission:
 • Birds are the primary reservoir
 •
intracellular gram negative ... test • PCR • Culture ... Chlamydia #psittaci #microbiology ... management #treatment #infectiousdiseases
CAPD-associated peritonitis (Continuous Ambulatory Peritoneal Dialysis) - 5 Things To Know
Diagnosis (Two of the following):
(1) Clinical
Positive effluent culture ... Microbiology: • ... • 15-35% Gram negative ... negative peritonitis ... Diagnosis #Management #InfectiousDiseases
Morphology of Fungal Infections in Tissues
Fungal infections with hyphae or pseudohyphae in tissues:
 • Yeasts with
Infections #Tissues #pathology ... yeast #hyphae #microbiology ... #differential # ... diagnosis #atlas #infectiousdiseases