25 results
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
epidermidis - Gram-negative ... ) - Culture negative ... #Endocarditis #Bacteria ... #Pathogens #Diagnosis ... #Differential #InfectiousDiseases
Bacteremia Quick Reference - Treatment Duration

Gram Negative Bacteremia:
 • Avoid: Aminoglycosides and tigecycline
 • Catheters should
Reference - Treatment ... Duration Gram Negative ... at 24 hours are negative ... #Treatment #Management ... #Duration #infectiousdiseases
Characteristics of Selected Pneumonias

Streptococcus pneumoniae (pneumococcus). Gram-positive diplococci. 
Haemophilus influenzae. Pleomorphic gram-negative coccobacilli. 
Staphylococcus aureus. Plump
Gram-negative rods ... monocytes; no bacteria ... Few PMNs; no bacteria ... Pneumonia #Patterns #Diagnosis ... #Comparison #Table
Transplant Infections Timeline
Pre-transplant:
 • Common bacteria (endogenous): Staphylococci (skin), Gram-negative bacilli (gut)
 • Viruses: HSV (reactivation)
Engraftment:
Pre-transplant: • Common bacteria ... Staphylococci (skin), Gram-negative ... Staphylococci (skin), Gram-negative ... #differential #diagnosis ... #causes #infectiousdiseases
HACEK is the acronym commonly used to describe and help doctors to remember a group of
fastidious Gram-negative ... caused by HACEK bacteria ... #Diagnosis #InfectiousDiseases
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
blood culture negative ... under BCNIE, these bacteria ... #differential #diagnosis ... causes #culture #negative ... #Endocarditis #InfectiousDiseases
Streptocccus Pneumoniae
Microbiology: Gram Positive, Alpha-hemolytic, Catalase Negative
Epidemiology - 10% adult carriers:
 • Most common cause of:
Alpha-hemolytic, Catalase Negative ... Diagnosis: • Physical ... Specificity of 97%) Treatment ... patients with bacteremia ... #microbiology #diagnosis
Psittacosis 
Pathogen: Chlamydia psittaci - obligate intracellular gram negative
Transmission:
 • Birds are the primary reservoir
 •
intracellular gram negative ... hemoptysis, diarrhea Diagnosis ... first line of treatment ... #microbiology #diagnosis ... #infectiousdiseases
Burkholderia cepacia complex (Bcc)- Diagnosis and Management Summary
Opportunistic bacteria, Healthcare Associated Infection
Gram-Negative Bacilli, Non-lactose fermenting, oxidase
complex (Bcc)- Diagnosis ... Opportunistic bacteria ... Infection Gram-Negative ... fermenting, oxidase negative ... #Management #treatment
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... cultures remain negative ... BCNIE Diagnostic ... #Endocarditis #diagnosis ... differential #workup #infectiousdiseases