272 results
Diagnostic Algorithm for Dizziness and Vertigo
Peripheral Vertigo:
 • Attacks: Sudden, severe, can last anywhere from seconds
with vascular causes ... positional episodes caused ... test (posterior ... or supine roll test ... test Méniére's
Medications that Can Cause False Positives on Drug Tests

Urine drug screens (UDSs) are simple to use,
Medications that Can Cause ... on Drug Tests ... medications can cause ... on drug tests? ... Protonix), may cause
Causes of Secondary Hypertension - Differential Diagnosis and Screening Testing
Common causes: 
 • Renal parenchymal disease
disease - Renal ultrasound ... , Tests to evaluate ... Duplex Doppler ultrasound ... sodium loading test ... conditions (supine position
Whipple Disease (Tropheryma whipplei) - Diagnosis and Management 

Caused by: Tropheryma whipplei

Symptoms and Signs:
1. Migratory poly/oligoarthralgia
Diagnosis and Management ... Caused by: ... T. whipplei tests ... T. whipplei test ... diagnosis #algorithm #management
Non-Invasive Positive Pressure Ventilation
Indications: 
 • COPD exacerbation (↓ intubation, ↓ mortality), Cardiogenic pulmonary edema (↓
Non-Invasive Positive ... ), Cardiogenic pulmonary ... mortality), Other causes ... Ventilation #diagnosis #management ... #indications #pulmonary
Positive Lachman test in ACL Injury

Here is an exam of a patient under anesthesia with an
Positive Lachman ... test in ACL Injury ... That causes the ... #Lachmans #test ... #Knee #Injury #Positive
Causes of Polycythemia (Erythrocytosis) - Differential Diagnosis Algorithm
Relative - Normal RBC Mass / Decreased Plasma Volume
Causes of Polycythemia ... Idiopathic JAK-2 Positive ... Abnormal Abdominal Ultrasound ... Cyanosis without Pulmonary ... Apnea • Chronic Pulmonary
Hemothorax - Thoracic ultrasound in trauma
False positive for consolidated lung- organized clot in pleural space after
Hemothorax - Thoracic ultrasound ... trauma False positive ... Hemothorax #Thoracic #ultrasound ... #trauma #pulmonary
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Proves cause-effect ... positive: TP / ... 100%, then all positive ... true positives: ... but not on the causal
The head impulse test (HIT) result is positive (abnormal) in nearly all patients with a peripheral
The head impulse test ... HIT) result is positive ... with a peripheral cause ... with a central cause ... a stand-alone test