116 results
Faget Sign - Pulse-Temperature Dissociation
Causes of Relative Bradycardia
 • Infectious Causes: Legionella, Psittacosis, Q fever, Typhoid
Dissociation Causes ... • Infectious Causes ... Babesiosis, Malaria, Leptospirosis ... Non-Infectious Causes ... #bradycardia #differential
Faget's Sign & Liebermeister's Rule
Pulse-Temperature Dissociation
EVERY 1 F RISE IN TEMPERATURE -> HR INCREASES 8-10 BPM
INFECTIOUS
• Malaria • Leptospirosis ... CLINICAL UTILITY ... help hone your differential ... Dissociation #diagnosis #differential ... #causes
Causes of Relative Bradycardia - Note the propensity for intracellular organisms.
Infectious: 
Legionella, Psittacosis, Q fever, Typhoid
Causes of Relative ... , Typhoid fever, ... Babesiosis, Malaria, Leptospirosis ... #bradycardia #Causes ... #differential #
Fever in Returning Travelers from Tropical Regions - Frequent Differential Diagnoses
Medical History:
 • Skin exposure to
Regions - Frequent Differential ... , leptospirosis, ... melioidosis, typhoid, pulmonary ... eosinophilia - Tropical pulmonary ... Returning #Traveler #differential
Leptospirosis
Pathogen: Leptospira (interrogans, kirschneri, noguchii)
Risk Factors:
 • Occupational exposure - Farmers, ranchers, trappers, veterinarians
 • Recreational
Leptospirosis Pathogen ... non-productive cough, nausea ... failure • Severe pulmonary ... Epidemiologic exposure + clinical ... #Leptospira #microbiology
Fever Patterns - Differential Diagnosis Framework

Continuous Fever:
Temp > 38°C with only 1 degree fluctuation in 24
Differential Diagnosis ... Non-Infectious Causes ... • Leptospirosis ... • Malaria • Leptospirosis ... #Patterns #Differential
Differential Diagnosis - Noninfectious Causes of Fever

CRITICAL DIAGNOSES:
 - Acute myocardial infarction
 - Pulmonary embolism or
Differential Diagnosis ... Noninfectious Causes ... of Fever CRITICAL ... infarction - Pulmonary ... #Differential #
Bradycardia - Differential Diagnosis Framework

BRADI Mnemonic
 • BRASH/Hyperkalemia
 • Reduced oxygen/Glucose/Temp
 • ACS
 • Drugs
 •
Bradycardia - Differential ... Hyperkalemia Pulmonary ... Babesiosis • Leptospirosis ... #Bradycardia #differential ... #diagnosis #causes
Biphasic Illness of Leptospirosis
Some patients do not progress to severe disease. Others, rapidly develop severe disease
Biphasic Illness of Leptospirosis ... -14 days): • Fever ... rash • Others: nausea ... dysfunction) • Pulmonary ... Questions @WuidQ #Leptospirosis
Non-Resolving Pneumonias: Etiologies
Unusual Infections:
 - Immunocompromised patients (e.g.: Mycobacterium, Aspergillosis, Nocardia)
 - Endemic Fungi (e.g.: Histoplasmosis,
psittaci/avian, leptospirosis ... yersinia/rats, Q fever ... Others: - Pulmonary ... abnormalities (Pulmonary ... #differential