15 results
Sensitivity is the proportion of truly diseased persons in the screened population who are identified as
that any given case ... #Specificity #PositivePredictiveValue ... #NegativePredictiveValue ... #Calculation #Table ... #PPV #NPV #Formulas
Positive Predictive Value Calculation - Probability that someone with a positive test actually has the disease

Positive
Predictive Value Calculation ... Positives #PositivePredictiveValue ... #PPV #Biostatistics ... Epidemiology #Equations #calculations
Negative Predictive Value Calculation - Probability that someone with a negative test truly does not have
Predictive Value Calculation ... Negatives #NegativePredictiveValue ... #NPV #Biostatistics ... Epidemiology #Equations #calculations
Widened Pulse Pressure - Differential Diagnosis and Pathophysiology

Pulse pressure is the difference between the systolic blood
Diagnosis and Pathophysiology ... Physiologic Causes ... Pathologic Causes ... Differential #Diagnosis #Pathophysiology ... #causes #cardiology
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Proves cause-effect ... PPV: proportion ... prevalence is low, then PPV ... specificity -> higher PPV ... Biostatistics #formulas #calculations
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 ... with vascular causes ... with posterior circulation
Causes of B12 deficiency. 

This great diagram shows normal absorption and outlines most possible causes. At
Causes of B12 deficiency ... most possible causes ... bind Cbl in the circulation ... #Differential #Causes ... #Diagnosis #Pathophysiology
Uncommon Causes of Noncardiogenic Pulmonary Edema (NCPE) - Differential Diagnosis Framework

High Altitude Pulmonary Edema:
 • Accumulation
epilepticus • Pathophysiology ... Pulmonary Edema: • Pathophysiology ... uteroplacental circulation ... The predominant pathophysiologic ... • Pathophysiology
Low Alkaline Phosphatase - Hypophosphatasia 

Is Low Alkaline Phosphatase Of Clinical Importance?

ALP enzyme- Discovered in 1923
Low
Most cases diagnosed ... collection with EDTA Pathophysiology ... → Low ALP -> PPi ... accumulate → PPi ... Phosphatase: • Other causes
Fluid Responsiveness and Fluid Tolerance Testing - OnePager Summary
Fluid resuscitation can be beneficial when required or
Pressure Variation (PPV ... pulse pressure (PPV ... is analogous to PPV ... cardiac output causes ... to the central circulation