257 results
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 ... #Microbiology # ... Micro #Differential ... #Ddx #Diagnosis
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
Tuberculosis Testing

LATENT TB
• LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
because false-negative ... Mycobacterial culture ... Liquid and solid cultures ... Mycobacterial culture ... #Workup #TB #Latent
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
Histoplasma) - Culture ... streptococci - Culture ... negative #Infective ... Bacteria #Pathogens #Diagnosis ... #Differential #
By Dr. Sara Dong @swinndong via Febrile [febrilepodcast.com  @febrilepodcast]
#ID  #Infectious Diseases  #Infections
#Microbiology #Micro
#Differential
febrilepodcast] #ID #Infectious ... Diseases #Infections ... #Microbiology # ... Micro #Differential ... #Ddx #Diagnosis
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
negative infective ... BCNIE #Causes #differential ... #diagnosis #causes ... #culture #negative ... InfectiousDiseases #Microbiology
Endocarditis Algorithm - Infective vs Noninfective Causes
Noninfective:
 • Malignancy
 • Autoimmune disease
 • Systemic infection
Native Valve
disease • Systemic infection ... • HACEK • Culture-negative ... epidermidis • Gram-negative ... Noninfective #Causes #Differential ... #Diagnosis
Bandemia Overview

Normal: < 1%
Clinically significant: > 10%

Band neutrophils are slightly less mature than segmented neutrophils and
Neutrophil (Normal) Differential ... Diagnosis: • ... likelihood of negative ... #Bandemia #differential ... #diagnosis #neutrophil
Infective endocarditis - etiology and sources of infection. 
 • Native and prosthetic 
valve endocarditis
 •
and sources of infection ... • Native and ... Bacteria #Etiology #Differential ... #Microbiology # ... Diagnosis #Pathogens
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 ... Algorithm #Transplant #diagnosis ... #differential