42 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 ... #Infections #Microbiology ... #Micro #Differential ... #contaminants
How to Determine a Contaminant vs True Infection 

What is the organism? Most 
common contaminants:
to Determine a Contaminant ... Most common contaminants ... • Coagulase-negative ... How many blood culture ... species from the micro
Guide to Interpretation of Positive Blood Cultures

I arrange the potential Gram stain results that one can
Positive Blood Cultures ... call from the micro ... Fewer positive cultures ... reason to go to micro ... Interpretation #Laboratory #Microbiology
Diarrhea Workup and Management Algorithm in Transplant Patients
First Tier Microbiologic-Testing:
1. C. difficile PCR (Stool)
2. CMV qPCR
Diarrhea Workup ... and Management Algorithm ... Bacterial culture ... above testing negative ... #Diarrhea #Workup
Psittacosis 
Pathogen: Chlamydia psittaci - obligate intracellular gram negative
Transmission:
 • Birds are the primary reservoir
 •
intracellular gram negative ... test • PCR • Culture ... first line of treatment ... Chlamydia #psittaci #microbiology ... #diagnosis #management
Septic Arthritis - Diagnosis and Management Summary
Clinical Exam: hot, swollen, pain with passive AND active ROM
Diagnosis and Management ... viral arthritis Workup ... arthrocentesis w/ fluid culture ... staphylococcus, gram negative ... until cultures
Streptocccus Pneumoniae
Microbiology: Gram Positive, Alpha-hemolytic, Catalase Negative
Epidemiology - 10% adult carriers:
 • Most common cause of:
Streptocccus Pneumoniae Microbiology ... Alpha-hemolytic, Catalase Negative ... sinus • Sputum culture ... Specificity of 97%) Treatment ... #diagnosis #management
Candidemia Workup and Management - IDSA Guidelines
1) Antibiotics
 • Empiric: Echinocandins (e.g. micafungin) for most patients
Candidemia Workup ... and Management ... Susceptibilities, Negative ... Cultures • Length ... #candidiasis #treatment
Tularemia - Diagnosis and Management Summary
Francisella tularensis - Aerobic fastidious gram-negative Coccobacillus - Zoonotic Infection
 •
Diagnosis and Management ... fastidious gram-negative ... Serology (preferred), Culture ... & GS, PCR Treatment ... #microbiology
Bacteremia Quick Reference - Treatment Duration

Gram Negative Bacteremia:
 • Avoid: Aminoglycosides and tigecycline
 • Catheters should
Quick Reference - Treatment ... Duration Gram Negative ... are negative ... #Bacteremia #Treatment ... #Management #Duration