48 results
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
Causes of blood culture ... negative infective endocarditis ... #negative #Endocarditis ... #InfectiousDiseases ... #CNIE #BCNIE #cardiology
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
for Infective Endocarditis ... Histoplasma) - Culture ... streptococci - Culture ... #Infective #Endocarditis ... #Differential #InfectiousDiseases
Infective Endocarditis - Indications for Surgery - "Fun-HEARTS" Mnemonic

Fungal endocarditis
Heart failure (valve dysfunction)
Enterococcus (VRE) endocarditis
Abscess, annular
Infective Endocarditis ... Mnemonic Fungal endocarditis ... / pSeudomonas endocarditis ... cardiothoracic #cardiology ... #infectiousdiseases
Systolic Murmurs - Differential Diagnosis Algorithm
Benign / Flow / Hyperdynamic:
 • Pregnancy
 • Fever
 • Anemia
Supravalvular
cardiomyopathy • Endocarditis ... • Endocarditis ... • Infarct • Rupture ... • Prolapse • Endocarditis ... Systolic #Murmurs #Cardiology
Endocarditis Summary

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV substance use
• IV catheter
• Recent
Microbiology: Blood cultures ... 90% of IE cases Culture ... staphylococci Culture ... • Blood cultures ... diagnosis #management #cardiology
Primary and Secondary Causes of Mitral Regurgitation
Primary (organic) chronic mitral regurgitation:
 • Leaflet: Rheumatic fever, Infective
fever, Infective endocarditis ... fever, Infective endocarditis ... ), Spontaneous rupture ... leak, Infective endocarditis ... differential #diagnosis #cardiology
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 ... Negative #Infective #Endocarditis ... differential #workup #infectiousdiseases
Listeriosis Summary - Listeria Monocytogenes
Pathogen: Listeria Monocytogenes - Gram-positive rod, Aerobic, facultative anaerobe, motile, beta-hemolytic, Non-spore-forming
Risk
Diagnosis: • Stool culture ... available • Blood culture ... diagnosis #management #infectiousdiseases ... #treatment #microbiology
Listeriosis Summary - Listeria Monocytogenes
Pathogen: Listeria Monocytogenes - Gram-positive rod, Aerobic, facultative anaerobe, motile, beta-hemolytic, Non-spore-forming
Risk
Diagnosis: • Stool culture ... available • Blood culture ... diagnosis #management #infectiousdiseases ... #treatment #microbiology
Psittacosis 
Pathogen: Chlamydia psittaci - obligate intracellular gram negative
Transmission:
 • Birds are the primary reservoir
 •
test • PCR • Culture ... danger of aerosol) Treatment ... first line of treatment ... diagnosis #management #treatment ... #infectiousdiseases