48 results
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
Histoplasma) - Culture ... streptococci - Culture ... negative #Infective ... Bacteria #Pathogens #Diagnosis ... #Differential #InfectiousDiseases
Diarrhea Workup and Management Algorithm in Transplant Patients
First Tier Microbiologic-Testing:
1. C. difficile PCR (Stool)
2. CMV qPCR
Diarrhea Workup ... Bacterial culture ... above testing negative ... #Workup #Management ... Algorithm #Transplant #diagnosis
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
negative infective ... #differential #diagnosis ... #negative #Endocarditis ... #InfectiousDiseases ... #Microbiology #
Psittacosis 
Pathogen: Chlamydia psittaci - obligate intracellular gram negative
Transmission:
 • Birds are the primary reservoir
 •
intracellular gram negative ... pain, hemoptysis, diarrhea ... test • PCR • Culture ... Chlamydia #psittaci #microbiology ... #treatment #infectiousdiseases
Legionnaire's Disease - Extrapulmonary organ involvement: CNS: Mental confusion, encephalopathic, headache. Cardiac: Relative bradycardia. GI: Loose
Cardiac: Relative ... stools, watery diarrhea ... Renal: Microscopic ... insufficiency #Diagnosis ... #IM #InfectiousDisease
Tuberculosis Testing

LATENT TB
• LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
TB AFB smear microscopy ... because false-negative ... Mycobacterial culture ... #Workup #TB #Latent ... LatentTB #ActiveTB #InfectiousDiseases
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... BCNIE Diagnostic ... #Endocarditis #diagnosis ... #differential #workup ... #infectiousdiseases
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 ... Differential #Ddx #Diagnosis
Solid Organ Transplant - Diarrhea - Diagnostic and Workup Algorithm
1st Tier Microbiologic Testing: CDiff (stool), CMV
Organ Transplant - Diarrhea ... - Diagnostic and ... Workup Algorithm ... blood), Bacterial Culture ... overgrowth If above negative
Disseminated Gonococcal Infection - Diagnosis and Management Summary

Bacteremic spread of the Gram-negative diplococci Neisseria gonorrhoeae. History
spread of the Gram-negative ... sets of blood cultures ... typically part of the workup ... #Management #Microbiology ... #InfectiousDiseases