12 results
Diarrhea Workup and Management Algorithm in Transplant Patients
First Tier Microbiologic-Testing:
1. C. difficile PCR (Stool)
2. CMV qPCR
Management Algorithm in Transplant ... CMV qPCR (Serum/Blood ... Bacterial culture ... above testing negative ... #diagnosis #differential
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
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
Causes of blood ... culture negative ... BCNIE #Causes #differential ... #negative #Endocarditis ... InfectiousDiseases #Microbiology
Acinetobacter baumanii on culture and microscopy
 - MacConkey agar - Lactose Negative
 - gram negative (often
and microscopy ... - gram negative ... violet esp. from blood ... #microbiology # ... culture
Solid Organ Transplant - Diarrhea - Diagnostic and Workup Algorithm
1st Tier Microbiologic Testing: CDiff (stool), CMV
Solid Organ Transplant ... - Diarrhea - Diagnostic ... qPCR/NAT (serum/blood ... ), Bacterial Culture ... overgrowth If above negative
Capnocytophaga spp on Culture and Blood Smear
Associated w/ dog/human oral flora, can cause bacteremia in immunocompromised
and Blood Smear ... anaerobe; narrow Gram negative ... #Blood #Smear # ... clinical #microscopy ... #microbiology
Bandemia Overview

Normal: < 1%
Clinically significant: > 10%

Band neutrophils are slightly less mature than segmented neutrophils and
of peripheral blood ... , including blood ... likelihood of negative ... #Bandemia #differential ... CBC #hematology #pathophysiology
Endocarditis Summary

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV substance use
• IV catheter
• Recent
Hypercoagulable (APLAS) Microbiology ... : Blood cultures ... • Coagulase-negative ... Marantic (NTBE) Differential ... • Blood cultures

Haemophilus influenzae on culture and microscopy
Immunosuppressed patient, recently diagnosed with Flu A. Presents after initial improvement
influenzae on culture ... and microscopy ... Blood cx +ve on ... requirements help differentiate ... #microbiology
Endocarditis - Overview and Differential Diagnosis Framework

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV
- Overview and Differential ... Hypercoagulable (APLAS) Microbiology ... : Blood cultures ... Negative: • Bartonella ... Diagnosis: • Blood