11 results
Important Biostatistics and Epidemiology Equations

Sensitivity = TP / (TP + FN) = true positives / disease
Biostatistics #statistics ... #specificity #PPV ... #NPV
Sensitivity is the proportion of truly diseased persons in the screened population who are identified as
it has a narrow focus ... Calculation #Table #PPV ... #NPV #Formulas ... #Statistics #Matrix
Negative Predictive Value Calculation - Probability that someone with a negative test truly does not have
NegativePredictiveValue #NPV ... Biostatistics #statistics
Positive Predictive Value Calculation - Probability that someone with a positive test actually has the disease

Positive
PositivePredictiveValue #PPV ... Biostatistics #statistics
The Gastroenterology Consult Primer
Guide to Calling a GI Consult
HPI:
 - Start with reason for consult
lipase PMH: - Focus ... Course: - NPO ... Treatment started (PPI
Common Bile Duct (CBD) on Abdominal Ultrasound

The key to finding CBD is to look anteriorly to
tube above the PV ... clinical #ultrasound #pocus
Stone in Neck (SIN) Sign of Acute Cholecystitis

Always eval the GB neck - impacted stone-in-neck (SIN)
sn of 97% and a ppv ... Cholelithiasis #POCUS
VExUS - Venous Excess Ultrasound Score 
Grade 0 - IVC grade < 3, HD grade 0,
3, HD grade 0, PV ... but normal HV/PV ... abnormalities in HV/PV ... abnormalities in HV/PV ... Congestion #Diagnosis #POCUS
Double Barrel Sign (Dilated CBD) on Abdominal POCUS

Which of the following is demonstrated in this clip?
Resolution:
) on Abdominal POCUS ... same size as the PV ... between the CBD and PV ... BileDuct #Abdominal #POCUS
Early Systolic Notching (ESN) Measurement on POCUS
Here is how you evaluate for Early Systolic Notching
1) Parasternal
Measurement on POCUS ... ⇢ Fan to find PV ... #measurement #pocus