13 results
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
negative infective endocarditis ... under BCNIE, these bacteria ... #differential # ... #InfectiousDiseases ... #Microbiology #
Infective endocarditis - etiology and sources of infection. 
 • Native and prosthetic 
valve endocarditis
 •
Infective endocarditis ... #Sources #Causes ... #Bacteria #Etiology ... #Differential # ... Microbiology #Diagnosis
Causes of Fever of Unknown Origin (FUO) - Differential Diagnosis Algorithm
Neoplasm:
• NHL
• Hodgkin's lymphoma
• Leukemia
• Solid
Causes of Fever ... Origin (FUO) - Differential ... Diagnosis Algorithm ... • Infectious endocarditis ... #causes
Fever Patterns - Differential Diagnosis Framework

Continuous Fever:
Temp > 38°C with only 1 degree fluctuation in 24
Fever Patterns - Differential ... endocarditis ... Non-Infectious Causes ... several days • Tick-borne ... Fever #Patterns #Differential
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Culture-Negative Infective Endocarditis ... but important causes ... Negative #Infective #Endocarditis ... #diagnosis #differential ... #workup #infectiousdiseases
Etiology of community acquired empyema determined by 16S rRNA sequencing. MRSA=meticillin resistant Staphylococcus aureus; MSSA=meticillin sensitive
Empyema #Pathogens #Microbiology ... #InfectiousDisease ... #Causes #Bacterial ... #Causes #Differential
Endocarditis Summary

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV substance use
• IV catheter
• Recent
Hypercoagulable (APLAS) Microbiology ... Septic Emboli Cause ... Marantic (NTBE) Differential ... Treat underlying cause ... • Persistent bacteremia
Nail Disorders secondary to Systemic Diseases
Nail Fold Abnormality
 • SLE
 • Scleroderma
 • Dermatomyositis
Koilonychia - Spoon-shaped
usually painful • Bacterial ... endocarditis ... #dermatology #Differential ... #Diagnosis #Algorithm ... #causes
Concurrent Brain and Lung Lesions
 • Bacteria: Nocardia spp, Strep anginosus, Staph aureus, Klebsiella pneumoniae (hypervirulent),
Lung Lesions • Bacteria ... phenomena from endocarditis ... Infections #Concurrent #Differential ... #Diagnosis #causes ... #infectiousdiseases
Concurrent Brain and Lung Lesions
 • Bacteria: Nocardia spp, Strep anginosus, Staph aureus, Klebsiella pneumoniae (hypervirulent),
Lung Lesions • Bacteria ... phenomena from endocarditis ... Infections #Concurrent #Differential ... #Diagnosis #causes ... #infectiousdiseases