262 results
Endocarditis Algorithm - Infective vs Noninfective Causes
Noninfective:
 • Malignancy
 • Autoimmune disease
 • Systemic infection
Native Valve
vs Noninfective Causes ... • Autoimmune disease ... HACEK • Culture-negative ... epidermidis • Gram-negative ... #Noninfective #Causes
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Proves cause-effect ... 100%, then all negative ... proportion of negative ... that are true negatives ... but not on the causal
ILD of Known Cause - Differential Diagnosis
Exposure:
 • Occupational: Asbestosis, Silicosis, Hypersensitivity, Pneumonitis
 • Treatment Related:
ILD of Known Cause ... Pneumonitis • Treatment ... Connective Tissue Disease ... BrighamChiefs #ILD #Causes ... interstitial #lung #disease
Approach to Low Back Pain - Differential Algorithm
- Non-MSK
- Axial / Musculoskeletal
- Radicular
- Systemic Disease (Do
Algorithm - Non-MSK ... Radicular - Systemic Disease ... Differential #Algorithm #Causes
Multiple Myeloma and Monoclonal Gammopathies
C - HyperCalcemia- calcium > 11 mg/dL / >1 mg/dL the ULN
R
ULN R - Renal disease ... Causes of false- ... negative SPEP: ... chain deposition disease ... amyloidosis Other causes
Causes of Polycythemia (Erythrocytosis) - Differential Diagnosis Algorithm
Relative - Normal RBC Mass / Decreased Plasma Volume
Causes of Polycythemia ... Diagnosis Algorithm Relative ... Abnormal Abdominal Ultrasound ... Cyanotic Heart Disease ... Diagnosis #Algorithm #Causes
Pathogens in Pneumonia

Here is a quick review of the pathogens causing pneumonia (useful for enumerating differentials
your grand rounds/cases ... strep - Gram-negatives ... structural lung disease ... structural lung disease ... #Microbiology #Causes
Causes of Chronic Kidney Disease - Differential Diagnosis Algorithm
Decreased kidney function (eGFR < 60 ml/min/1.73 m2)
Causes of Chronic ... Kidney Disease ... Family history, ultrasound ... Sterile pyuria, WBC casts ... Diagnosis #Algorithm #Causes
Causes of Proteinuria - Differential Diagnosis Algorithm
Persistent Proteinuria >150mg/d protein present on repeat testing including overnight
Causes of Proteinuria ... Tubular Proteinuria (Negative ... sediment - WBC/RBC casts ... Minimal change disease ... Diagnosis #Algorithm #Causes
Commonly Used Diagnostic Tests for Celiac Disease

Tissue transglutaminase (tTG) IgA antibodies
 - Most reliable noninvasive test
Tests for Celiac Disease ... specificity - Falsely negative ... ) - May be negative ... HLA-DQ8 - High negative ... Reflects response to treatment