113 results
Infective endocarditis - etiology and sources of infection. 
 • Native and prosthetic 
valve endocarditis
 •
Infective endocarditis ... and sources of infection ... • Native and ... • Soft tissue infections ... #Differential #Microbiology
Endocarditis Algorithm - Infective vs Noninfective Causes
Noninfective:
 • Malignancy
 • Autoimmune disease
 • Systemic infection
Native Valve
Endocarditis Algorithm ... disease • Systemic infection ... HACEK • Culture-negative ... epidermidis • Gram-negative ... amzn.to/2LmUODZ #Endocarditis
Blood culture contaminants
Grouped by gram negative vs gram positive vs other as well as never/maybe/probably
Some additional
Grouped by gram negative ... febrilepodcast] #ID #Infectious ... Diseases #Infections ... #Microbiology #
Aminoglycosides  - Antibiotics Class Overview

Gentamicin, Tobramycin, Amikacin, Streptomycin -30S inhibitor (all IV)
Spectrum: Extremely efficacious vs.
. aerobic Gram negatives ... : serious gram negative ... infections especially ... urinary tract infections ... effect (mainly in endocarditis
Differentiating NBTE from Infective Endocarditis
No pathognomonic signs/symptoms or echo features that are specific to NBTE, and
high index of clinical ... serology: Serial negative ... Frequent false-negative ... large infarct - Infectious ... #comparison #infective
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
blood culture negative ... infective endocarditis ... causes #culture #negative ... #Endocarditis # ... InfectiousDiseases #Microbiology
Fever Patterns - Differential Diagnosis Framework

Continuous Fever:
Temp > 38°C with only 1 degree fluctuation in 24
• Typhus, gram-negative ... Acute bacterial endocarditis ... • Infective endocarditis ... • Gonococcal endocarditis ... Associated with Relative
Streptocccus Pneumoniae
Microbiology: Gram Positive, Alpha-hemolytic, Catalase Negative
Epidemiology - 10% adult carriers:
 • Most common cause of:
Streptocccus Pneumoniae Microbiology ... Alpha-hemolytic, Catalase Negative ... peritonitis, and endocarditis ... Meningitis 10-14 days, Endocarditis ... Pneumoniae #strep #microbiology
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... Infective Endocarditis ... cultures remain negative ... antimicrobials, clinical ... #Infective #Endocarditis
Daptomycin  - Antibiotics Class Overview

Mechanism: Lipopeptide antibiotic – forms transmembrane channels and depolarizes cells.
No gram negative ... skin/soft tissue infections ... MRSA bacteremia/endocarditis