251 results
Important Biostatistics and Epidemiology Equations

Sensitivity = TP / (TP + FN) = true positives / disease
Important Biostatistics ... = Rule IN #Biostatistics ... #specificity #PPV ... #NPV
Epley Maneuver for BPPV Canalith Repositioning

#Management #BPPV #Epley #Maneuver #Repositioning #Canalith #Vertigo
Epley Maneuver for BPPV ... #Management #BPPV
Causes of Vertigo - Differential Diagnosis Algorithm
#Diagnosis #Neurology #Dizziness #Peripheral #Central #Algorithm #BPPV #Differential #Ddxof
Central #Algorithm #BPPV
Characteristics of Peripheral and Central Vertigo
PERIPHERAL VERTIGO
 • Onset: Sudden
 • Intensity: Severe initially, often decreasing
than a minute for BPPV ... posterior canal BPPV ... horizontal canal BPPV ... Induces vertigo (BPPV
Fungal Biomarkers: Comparing Beta-D-Glucan and Aspergillus Galactomannan
Beta-D-Glucan:
 • Polysaccharide cell wall component of many fungi
 •
Spec -80% for IA, PPV ... < 50%, NPV > 90%
Arterial Lines & Waveforms
Arterial lines permit continuous invasive blood pressure measurement, frequent arterial blood sampling, and
PRESSURE VARIATION (PPV ... Pressure Variation (PPV ... volume (increased PPV
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Epidemiology and Biostatistics ... PPV: proportion ... prevalence is low, then PPV ... specificity -> higher PPV ... #Epidemiology #Biostatistics
Positive Predictive Value Calculation - Probability that someone with a positive test actually has the disease

Positive
PositivePredictiveValue #PPV ... #Biostatistics
Differentiating Benign Paroxysmal Positional Vertigo (BPPV) From Vestibular Neuritis-Labyrinthitis
BENIGN PAROXYSMAL POSITIONAL VERTIGO
 • Age: More common
Positional Vertigo (BPPV ... consistent with BPPV ... ) #Vertigo #BPPV
Classic Findings During Hallpike Test in Posterior Canal Benign Paroxysmal Positional Vertigo (BPPV)
 • Latency (delay
Positional Vertigo (BPPV ... findings #signs #bppv