9 results
Serious Bacterial Illness (SBI):
1) UTI and pyelonephritis
Most common cause of SBI
Accounts for 3-8% of uncharacterized fevers
Female
uncharacterized fevers ... Urinalysis: LE 75% specificity ... , Nitrites 97% specificity ... Meningitis suggested ... #Peds #EM #Classification
Lyme Disease: Early and Late Clinical manifestations
Stage 1. Localized
 • EM appears 7-14 days at the
Disease: Early and Late ... Localized • EM ... arthralgia, headache, fever ... days-weeks after EM ... SSX (lymphocytic meningitis
CNS Infections - Viral Encephalitis and Bacterial Meningitis - Differential Diagnosis Framework

Viral Encephalitis:
MCC: Enteroviruses (e.g., coxsackievirus
• Headache • Fever ... and specificity ... sensitivity and ... specificity of ... #neurology #meningitis
Hunter's Decision Rule (Sensitivity 84%, Specificity 97%), Sternbach's criteria - Need 3 of 10 symptoms: (Sensitivity
84%, Specificity ... 75%, specificity ... 96%) #Diagnosis ... #EM #IM #Serotonin ... Syndrome #Hunters #Algorithm
ID Approach to Fever and Rash - Diagnostic Algorithm
Central Maculopapular (most common):
Measles, Parvovirus 819 / EBV,
and Rash - Diagnostic ... Algorithm Central ... Secondary syphilis, EM ... RMSF, Neisseria meningitidis ... #Algorithm #Schema
CNS Infection in HIV / AIDS - Differential Diagnosis Framework

Principles of HIV-Associated CNS Opportunistic Infections:
 •
• Symptoms: Fever ... • Symptoms: Fever ... Tuberculous Meningitis ... effect/Edema • EBV ... Cryptococcal Meningitis
The Febrile Infant Step-by-Step Algorithm
This is an algorithm developed by European emergency physicians to identify low-risk
pubmed/27382134 Sensitivity ... and specificity ... 92.0% and 46.9% #Diagnosis ... #EBM #Management ... Stratification #Fever
Elevated Lactate Dehydrogenase (LDH) - Differential Diagnosis Framework

LDH is a cytoplasmic enzyme present in tissues throughout
Pneumocystis pneumonia (late ... > 1.5) with a sensitivity ... and specificity ... • Bacterial meningitis ... myocarditis, rheumatic fever
Mycoses

HISTOPLASMOSIS
• Inhalation of conidia → Yeast → travel to lymph nodes → spread in body
• Bird
respiratory symptoms • Fever ... antigen assay has a sensitivity ... and specificity ... Aspergillosis Pathophysiology ... shock • Mortality rate