10 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 ... #bcx #contaminant
Duke's Criteria for Infective Endocarditis
Definite IE - Pathologic Criteria:
 • Pathologic lesions - vegetation or intracardiac
major clinical criteria ... blood cultures ... from 2 separate blood ... Immunologic phenomena • Micro ... : + bcxs that do
Capnocytophaga spp on Culture and Blood Smear
Associated w/ dog/human oral flora, can cause bacteremia in immunocompromised
Capnocytophaga spp ... anaerobe; narrow Gram negative ... #Culture #Blood ... #Smear #clinical ... #microscopy #microbiology
How to Determine a Contaminant vs True Infection 

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

I arrange the potential Gram stain results that one can
Interpretation of Positive Blood ... Remember that clinician ... car shaped GPR, ... Interpretation #Laboratory ... #Microbiology #
Diagnosing Brucellosis
Epidemiological Exposures
- Endemic Regions
- Clinical Micro Lab Technicians
- Animal/Vaccine Exposure: Vets, Slaughterhouse workers, hunters
- Unpasteurized
Micro Lab Technicians ... Diagnostics: Culture ... (blood, bone marrow ... SAT, ELISA), 16S PCR ... Brucellosis #Diagnosis #Criteria
Acinetobacter baumanii on culture and microscopy
 - MacConkey agar - Lactose Negative
 - gram negative (often
violet esp. from blood ... cx) - coccobacilli ... Acinetobacter #baumanii #clinical ... #microscopy #microbiology ... #culture
Community Acquired Pneumonia (CAP) - Diagnosis and Management

Pneumonia Signs/Symptoms:
 • Confusion/disorientation (LR + 1.9)
 • Cough
aeruginosa Clinical ... CX is low ranging ... screening: High negative ... in adults with clinically ... /nasal PCR to allow
American College of Rheumatology Diagnostic Criteria for Gout
Presence of characteristic urate crystals in the joint fluid
the following clinical ... , laboratory, or ... arthritis - Culture ... of joint fluid negative ... #Rheumatology #ACR
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
Gram stain and culture ... ANAs; thus, a negative ... rubella titer, ACE ... : • Complete blood ... ANA and RF (if clinical