3290 results
Causes of Erythema Nodosum
Common
 - Idiopathic (up to 55 percent)
 - Infections: streptococcal pharyngitis (28 to
Causes of Erythema ... Idiopathic (up to 55 percent ... pharyngitis (28 to 48 percent ... Drugs (3 to 10 percent ... Erythema #Nodosum #Causes
Common Etiologies of Cirrhosis

Inflammation

 - Hepatitis B (15 percent)

 - Hepatitis C (47 percent)

 - Schistosomiasis
Hepatitis B (15 percent ... Hepatitis C (47 percent ... - Alcohol (18 percent ... ) Unknown (14 percent ... Hepatology #Cirrhosis #Causes
Most episodes of chronic cough in adults are caused by upper airway cough syndrome (UACS, also
in adults are caused ... has two or more causes ... in 18 to 62 percent ... in up to 42 percent ... three most common causes
Premature Ventricular Complexes (PVC's) - Summary Framework

Why PVCs?  Can be the first manifestation of cardiac
heart disease Causes ... as: • Low: <1 percent ... burden: >1 to <15 percent ... day • High: >15 percent ... full compensatory pause
4-T Score for the Likelihood of Heparin Induced Thrombocytopenia
 - Thrombocytopenia - Compare the highest platelet
count
Other potential cause ... risk of HIT <1 percent
Broncholithiasis - Differential Diagnosis Framework

 • Also known as: Lung stones, pulmoliths, pneumoliths, bronchial calculi
 •
Hemoptysis (30-85 percent ... (less than 20 percent ... Broncholithiasis - Infectious Causes ... Noninfectious Causes
Hypoxia and Hypoxemia - Overview
Hypoxia - insufficient oxygen delivered to tissues to meet demands
Hypoxemia - low
on ABG) SaO2 - percent ... differential #diagnosis #causes
In 80 percent of acute pyelonephritis cases, Escherichia coli is the responsible pathogen in women, although
In 80 percent of ... pyelonephritis cases ... Pyelonephritis #Bacterial #Causes
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Granulomas (ANCA is present ... in > 80 percent ... • (80 to 90 percent ... tract, and often causes ... lesions, urticaria, recent
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Proves cause-effect ... Case Control ( ... values are: +1 = perfect ... correlation, -1 = perfect ... but not on the causal