14 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 ... #Ddx #Diagnosis
How to Determine a Contaminant vs True Infection 

What is the organism? Most 
common contaminants:
• Coagulase-negative ... How many blood culture ... species from the micro ... Contamination #Diagnosis ... #BCx #Laboratory
Guide to Interpretation of Positive Blood Cultures

I arrange the potential Gram stain results that one can
call from the micro ... reason to go to micro ... BloodCultures #BCx ... Interpretation #Laboratory #Microbiology ... #Diagnosis
Capnocytophaga
Pathogen: Capnocytophaga
 • 9 species, C. canimorsus responsible for the majority of infections
 • Gram-negative rod,
infections • Gram-negative ... microorganism (Culture ... fusiform gram-negative ... #canimorsus #microbiology ... #management #treatment
Streptocccus Pneumoniae
Microbiology: Gram Positive, Alpha-hemolytic, Catalase Negative
Epidemiology - 10% adult carriers:
 • Most common cause of:
Streptocccus Pneumoniae Microbiology ... Alpha-hemolytic, Catalase Negative ... Diagnosis: • Physical ... sinus • Sputum culture ... #diagnosis #management
Psittacosis 
Pathogen: Chlamydia psittaci - obligate intracellular gram negative
Transmission:
 • Birds are the primary reservoir
 •
intracellular gram negative ... hemoptysis, diarrhea Diagnosis ... test • PCR • Culture ... Chlamydia #psittaci #microbiology ... #diagnosis #management
Diarrhea Workup and Management Algorithm in Transplant Patients
First Tier Microbiologic-Testing:
1. C. difficile PCR (Stool)
2. CMV qPCR
Diarrhea Workup and Management ... Bacterial culture ... above testing negative ... Diarrhea #Workup #Management ... Algorithm #Transplant #diagnosis
CAPD-associated peritonitis (Continuous Ambulatory Peritoneal Dialysis) - 5 Things To Know
Diagnosis (Two of the following):
(1) Clinical
Things To Know Diagnosis ... Positive effluent culture ... Microbiology: • ... • 15-35% Gram negative ... #Management #InfectiousDiseases
Tularemia - Diagnosis and Management Summary
Francisella tularensis - Aerobic fastidious gram-negative Coccobacillus - Zoonotic Infection
 •
and Management ... fastidious gram-negative ... Serology (preferred), Culture ... #management #treatment ... infectiousdiseases #microbiology
Intraoperative Sepsis - Guidelines for Crises in Anaesthesia

Severe sepsis (hypotension persisting after initial fluid challenge of
coagulation and cultures ... within 1 h (seek microbiology ... and send source cultures ... Intraoperative #Checklist #Diagnosis ... #Management #Workup