34 results
Vascular Joint Pain - Differential Diagnosis Algorithm 
 - Constant Pain (Ischemia)
 - Acute Onset
 -
- Differential ... Infective Endocarditis ... e.g. fractured long ... compressing the blood ... #Orthopedics #Causes
Causes of Antibiotic Failure - Differential Diagnosis Framework
Diagnosis:
 • Non-Infectious: Malignant, Autoimmune, Drug-related (NMS, serotonin syndrome,
Causes of Antibiotic ... (daptomycin in lungs ... rxn), Secondary infection ... Hospital-Acquired Infection ... 19 • Unrelated Infection
Ear Pain (Otalgia) - Differential Diagnosis Framework

Primary Otalgia 
 - Pain that originates from the ear
) - Differential ... associated with infection ... • Tumor • Infection ... subdural hematoma, lung ... Sialadenitis (infection
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Infective Endocarditis ... • Infection with ... special media) • Infection ... but important causes ... diagnosis #differential
Fever Patterns - Differential Diagnosis Framework

Continuous Fever:
Temp > 38°C with only 1 degree fluctuation in 24
Fever Patterns - Differential ... Pyogenic/focal infection ... Causes: • Still's ... Brucellosis • Liver or lung ... endocarditis Non-Infectious
Endocarditis Summary

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV substance use
• IV catheter
• Recent
verrucous) • Lung ... Microbiology: Blood ... Marantic (NTBE) Differential ... Paradoxical emboli via ASD ... • Blood cultures
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Causes of Petechial ... - Trauma - Infection ... lesions • Severe pain ... Disseminated gonococcal infection ... Schonlein Purpura - Endocarditis
Hematuria - Differential Diagnosis Framework

Gross Hematuria: Red/Dark urine
 • 1ml blood/liter urine can induce color change
Hematuria - Differential ... urine • 1ml blood ... GN - Loin pain ... Hematuria: • Infection ... #renal #urine #blood
Hyponatremia - Differential Diagnosis by Mechanism
Decr Blood Pressure (“Decr Effective Circulating Volume”) 
 - Volume depletion
Mechanism Decr Blood ... Pressure (“Decr Effective ... carcinoma of the lung ... SSRIs) Severe pain ... Diagnosis #Table #Causes
Back Pain - Differential Diagnosis
Primary Back Pathology:
 • Musculoligamentous injury (a.k.a. lumbosacral strain)
 • Spondylosis (i.e.
Back Pain - Differential ... Manifestations: • Infection ... (most common: lung ... renal, thyroid, and ... Diagnosis #causes