2614 results
Common Childhood Exanthems - Differential Diagnosis
1) Rubeola (Measles) - Measles morbillivirus (MeV)
2) Scarlet Fever - Streptococcus
Diagnosis 1) Rubeola ... Streptococcus pyogenes 3) Rubella ... German measles) - Rubella
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
Causes of Culture Negative ... as a cause of a negative ... Fastidious: Nocardia, Brucella ... Fastidious: Bartonella, Brucella ... AnnKumfer #Culture #Negative
Important Biostatistics and Epidemiology Equations

Sensitivity = TP / (TP + FN) = true positives / disease
FP + TN) = true negatives ... all positives Negative ... FN + TN) = true negatives ... / all negatives ... Specificity) Negative
Rubella (German Measles)
Rubella, also called German measles, often presents with a mild febrile illness with a
Rubella (German ... Measles) Rubella ... lymphadenopathy #Rubella
My Patient with Infective Endocarditis (IE) Has Negative Blood Cultures
 - Did they receive antibiotics prior
Endocarditis (IE) Has Negative ... cause of culture negative ... , Bartonella, Brucella ... #Endocarditis #Negative
Endocarditis Algorithm - Infective vs Noninfective Causes
Noninfective:
 • Malignancy
 • Autoimmune disease
 • Systemic infection
Native Valve
Systemic infection Native ... Staphylococcus lugdunensis Native ... HACEK • Culture-negative ... epidermidis • Gram-negative ... Enterococcus • Gram-negative
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
Endocarditis Native ... epidermidis - Gram-negative ... ) - Culture negative ... Enterococci - Gram-negative ... streptococci - Culture negative
Measles (Rubeola) 
Clinical 
 • High fever 
 • Cough, Coryza, Conjunctivitis (The 3 C's)
Measles (Rubeola ... #Measles #Rubeola
SCORTCH Congenital Infections Mnemonic
S - Syphilis
C - CMV
O - Other
R - Rubella
T - Toxoplasmosis
C - Chickenpox
O - Other R - Rubella
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
blood culture negative ... Bartonella spp, Brucella ... causes #culture #negative