59 results
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
Causes of blood culture ... identified with modern culture ... #differential #diagnosis ... #causes #culture ... InfectiousDiseases #Microbiology
Epidemiological Clues That May be Helpful in Defining the Etiological Diagnosis of Culture-Negative Endocarditis

#Endocarditis #Bacteria #Differential
the Etiological Diagnosis ... of Culture-Negative ... Endocarditis ... #Endocarditis #Bacteria ... #Differential #Diagnosis
Duke's Criteria for Infective Endocarditis
Definite IE - Pathologic Criteria:
 • Pathologic lesions - vegetation or intracardiac
for Infective Endocarditis ... demonstrated by culture ... positive blood culture ... positive blood culture ... #diagnosis #major
Endocarditis checklist
Initial evaluation
 • Peripheral blood cultures (three sets at three different sites)
 • Additional culture
Endocarditis checklist ... • Additional culture ... suspect right-sided endocarditis ... Obtain single blood culture ... #criticalcare #diagnosis
Endocarditis - Duke Criteria - Major and Minor

MAJOR CRITERIA: 
 - Persistently +ve blood culture for
Endocarditis - Duke ... Persistently +ve blood culture ... Positive blood cultures ... criteria #Endocarditis ... #Major #Minor #Diagnosis
My Patient with Infective Endocarditis (IE) Has Negative Blood Cultures
 - Did they receive antibiotics prior
with Infective Endocarditis ... Negative Blood Cultures ... Number one cause of culture ... #Infective #Endocarditis ... BloodCultures #Diagnosis
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
for Infective Endocarditis ... Histoplasma) - Culture ... streptococci - Culture ... #Infective #Endocarditis ... Bacteria #Pathogens #Diagnosis
Primary and Secondary Causes of Mitral Regurgitation
Primary (organic) chronic mitral regurgitation:
 • Leaflet: Rheumatic fever, Infective
fever, Infective endocarditis ... ), Spontaneous rupture ... infarction, Tendineae rupture ... Papillary muscle rupture ... #differential #diagnosis
Systolic Murmurs - Differential Diagnosis Algorithm
Benign / Flow / Hyperdynamic:
 • Pregnancy
 • Fever
 • Anemia
Supravalvular
- Differential Diagnosis ... Chordae Tendinae • Rupture ... • Endocarditis ... • Infarct • Rupture ... #Differential #Diagnosis
Streptocccus Pneumoniae
Microbiology: Gram Positive, Alpha-hemolytic, Catalase Negative
Epidemiology - 10% adult carriers:
 • Most common cause of:
Streptocccus Pneumoniae Microbiology ... peritonitis, and endocarditis ... Diagnosis: • Physical ... sinus • Sputum culture ... #diagnosis #management