70 results
Causes of Relative Bradycardia - Note the propensity for intracellular organisms.
Infectious: 
Legionella, Psittacosis, Q fever, Typhoid
Causes of Relative ... Drug fever #relative ... #bradycardia #Causes ... #differential #diagnosis ... infectiousdiseases #table
Back to the "10 Need to Know" series - Drug Therapeutic Target Levels. 

For lithium, target
vary depending on treatment ... Ranges #Toxicology #Pharmacology ... #Diagnosis #Table
Hordeolum vs Chalazion

Hordeolum (Stye):
 • Location: Most commonly found at or near an eyelash follicle
 •
eyelash follicle • Cause ... , swelling • Treatment ... upper lid • Cause ... #Clinical #Diagnosis ... Chalazion #Comparison #Table
Isocoria - Pupillary Defects - Differential Diagnosis Algorithm
Relative Afferent Pupil Defect
 • Optic Neuritis
 • Ischemic
- Differential Diagnosis ... Algorithm Relative ... • Botulism Pharmacologic ... #Differential #Diagnosis ... #Algorithm #Causes
Point-of-care Ultrasound for Diagnosis of Abscess in Skin and Soft Tissue Infections

1. POCUS is more accurate
Ultrasound for Diagnosis ... POCUS is more accurate ... cellulitis in cases ... POCUS has a negative ... LikelihoodRatios #Accuracy #Diagnosis
Commonly Used Diagnostic Tests for Celiac Disease

Tissue transglutaminase (tTG) IgA antibodies
 - Most reliable noninvasive test
Commonly Used Diagnostic ... disease) - May be negative ... Reflects response to treatment ... Laboratory #Tests #Diagnosis ... #Workup #Table
A toxidrome is a syndrome (set of symptoms) caused by specific medications or toxins.

There are 5
set of symptoms) caused ... methylphenidate (Ritalin) - Sedative-Hypnotic ... antihistamines #Diagnosis ... Toxidromes #Comparison #Table
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
• Most common cause ... antibiotics once stable ... hemorrhage • Treatment ... shows a small, stable ... #differential #causes
Common Medications Known to Prolong QTc
Antiarrhythmics - Amiodarone, sotalol, flecainide, quinidine, dronedarone, dofetilide
Vasopressors/inotropes - Epinephrine, norepinephrine,
#Medications #Causes ... #differential #diagnosis ... #pharmacology # ... table
Differentiating NBTE from Infective Endocarditis
No pathognomonic signs/symptoms or echo features that are specific to NBTE, and
specific to NBTE, and diagnosis ... is required for diagnosis ... Frequent false-negative ... in up to 30% of cases ... #table