633 results
Germ Cell Layers and Derivatives
Ectoderm
 • Neural Crest
 • Neural Tube
 • Surface Ectoderm
Mesoderm
Endoderm

Sarah Lyon @sarahthelyon

#Germ
Cell Layers and Derivatives ... Ectoderm Mesoderm Endoderm ... Layers #embryology #Derivatives
Some H1 antihistaminic Drugs in Clinical Use
1st Generation Antihistamines:
Ethanolamjnes - Carbinoxamine (Clistin), Dimenhydrinate (salt of diphenhydramine)(Dramamine),
etc) Piperazjne derivatives ... Phenothiazine derivative
Drugs that Cause Fever
Most commonly:
Amphotericin B, Antihistamines, Asparaginase, Barbiturates, Bleomycin sulfate, Methyldopa, Penicillins, Phenytoin sodium, Procainamide,
Drugs that Cause Fever ... Cimetidine, Cocaine derivatives ... hydrochloride #Drug #Fever
Fever - Pyrogen Pathophysiology

EXOGENOUS PYROGEN
 • Bacteria: Lipopolysaccharide components, peptidoglycans and muramyl peptide derivatives, Toxins
 •
Fever - Pyrogen ... muramyl peptide derivatives ... production → Fever ... #Fever #Pathophysiology
Faget Sign - Pulse-Temperature Dissociation
Causes of Relative Bradycardia
 • Infectious Causes: Legionella, Psittacosis, Q fever, Typhoid
Psittacosis, Q fever ... , Typhoid fever, ... , Dengue fever, ... Mountain spotted fever ... , Drug fever
Fever Patterns - Differential Diagnosis Framework

Continuous Fever:
Temp > 38°C with only 1 degree fluctuation in 24
Fever Patterns - ... Continuous Fever ... (Step ladder: fever ... Intermittent Fever ... or no fever
Causes of Relative Bradycardia - Note the propensity for intracellular organisms.
Infectious: 
Legionella, Psittacosis, Q fever, Typhoid
Psittacosis, Q fever ... , Typhoid fever, ... , Dengue fever, ... Mountain spotted fever ... , Drug fever
Faget's Sign & Liebermeister's Rule
Pulse-Temperature Dissociation
EVERY 1 F RISE IN TEMPERATURE -> HR INCREASES 8-10 BPM
INFECTIOUS
Psittacosis • Q Fever ... • Typhoid Fever ... • Drug Fever ... Typhoid Fever (S ... Dengue Fever NOTE
Ever had a #traveler come in to your clinic with #fever and you were not sure
Ever had a #traveler ... your clinic with #fever ... infectiousdisease #fever
Fever in Returning Travelers from Tropical Regions - Frequent Differential Diagnoses
Medical History:
 • Skin exposure to
Fever in Returning ... Symptoms: • Fever ... liver, Dengue fever ... - Hemorrhagic fevers ... typhoid, yellow fever