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Epidemiological Clues That May be Helpful in Defining the Etiological Diagnosis of Culture-Negative Endocarditis

#Endocarditis #Bacteria #Differential
be Helpful in Defining ... Culture-Negative Endocarditis ... #Endocarditis ... #Bacteria #Differential
Non-Infective Endocarditis - Pathophysiology
Non-infective Endocarditis Pathophysiology:
 • Valves usually undamaged - Etiology poorly understood but thought
Non-Infective Endocarditis ... Non-infective Endocarditis ... rare Infective Endocarditis ... endothelium is common → Bacteria ... over clusters of bacteria
Infective endocarditis - etiology and sources of infection. 
 • Native and prosthetic 
valve endocarditis
 •
Infective endocarditis ... prosthetic valve endocarditis ... #Infective #Endocarditis ... Sources #Causes #Bacteria
My Patient with Infective Endocarditis (IE) Has Negative Blood Cultures
 - Did they receive antibiotics prior
with Infective Endocarditis ... have a fastidious bacteria ... this be a non-bacterial ... #Infective #Endocarditis
HACEK is the acronym commonly used to describe and help doctors to remember a group of
cause infective endocarditis ... less than 3% of endocarditis ... caused by HACEK bacteria ... More commonly endocarditis ... HACEK #Organisms #Endocarditis
Streptocccus Pneumoniae
Microbiology: Gram Positive, Alpha-hemolytic, Catalase Negative
Epidemiology - 10% adult carriers:
 • Most common cause of:
cause of: CAP, Bacterial ... peritonitis, and endocarditis ... Urine antigen in bacteremia ... patients with bacteremia ... Meningitis 10-14 days, Endocarditis
Typical Recommendations for Antibiotic Duration for Common Bacterial Infections in Adults 

- Dr. Eric Strong @DrEricStrong
Duration for Common Bacterial ... Antibiotics #Durations #Bacteria
Infective Endocarditis - Indications for Surgery - "Fun-HEARTS" Mnemonic

Fungal endocarditis
Heart failure (valve dysfunction)
Enterococcus (VRE) endocarditis
Abscess, annular
Infective Endocarditis ... Mnemonic Fungal endocarditis ... Enterococcus (VRE) endocarditis ... Time, sustained bacteremia ... / pSeudomonas endocarditis
C5-C9 Deficiency - Pathogenesis and Clinical Findings
Note:
 • Risk of invasive meningococcal disease is 1000-10000x higher
pathogens Bacterial ... MAC formation on bacterial ... channels within bacterial ... => • Bacteria ... stiffness • Bacteria
Fever Patterns - Differential Diagnosis Framework

Continuous Fever:
Temp > 38°C with only 1 degree fluctuation in 24
• Viral and bacterial ... pneumonia • Acute bacterial ... endocarditis ... • Infective endocarditis ... /years without bacterial