3138 results
My Patient with Infective Endocarditis (IE) Has Negative Blood Cultures
 - Did they receive antibiotics prior
with Infective Endocarditis ... Negative Blood Cultures ... therapy - Number one cause ... of culture negative ... #Infective #Endocarditis
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
Causes of blood ... culture negative ... infective endocarditis ... #culture #negative ... #Endocarditis #
Endocarditis Summary

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV substance use
• IV catheter
• Recent
Culture (+): ... staphylococci Culture ... Septic Emboli Cause ... • Blood cultures ... Treat underlying cause
Endocarditis Algorithm - Infective vs Noninfective Causes
Noninfective:
 • Malignancy
 • Autoimmune disease
 • Systemic infection
Native Valve
Endocarditis Algorithm ... vs Noninfective Causes ... • HACEK • Culture-negative ... amzn.to/2LmUODZ #Endocarditis ... #Noninfective #Causes
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... Infective Endocarditis ... separate blood cultures ... but important causes ... Negative #Infective #Endocarditis
Streptocccus Pneumoniae
Microbiology: Gram Positive, Alpha-hemolytic, Catalase Negative
Epidemiology - 10% adult carriers:
 • Most common cause of:
• Most common cause ... media • Important cause ... peritonitis, and endocarditis ... sinus • Sputum culture ... Meningitis 10-14 days, Endocarditis
Endocarditis - Overview and Differential Diagnosis Framework

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV
Endocarditis - Overview ... Culture Positive ... Septic emboli cause ... Treat underlying cause ... #Endocarditis
Capnocytophaga Canimorsus Skin Rash

40 M presents w/ N, V, severe epigastric pain. SHx: smoker, drinks 18
dogs & latter can cause ... gram-negative bacillus cause ... to meningitis, endocarditis ... Myocarditis & culture-negative ... is difficult to culture
Duke's Criteria for Infective Endocarditis
Definite IE - Pathologic Criteria:
 • Pathologic lesions - vegetation or intracardiac
for Infective Endocarditis ... demonstrating active endocarditis ... demonstrated by culture ... positive blood culture ... criteria #Infective #Endocarditis
Endocarditis checklist
Initial evaluation
 • Peripheral blood cultures (three sets at three different sites)
 • Additional culture
Endocarditis checklist ... Peripheral blood cultures ... • Additional culture ... suspect right-sided endocarditis ... Critical Care #Endocarditis