44 results
Important Biostatistics and Epidemiology Equations

Sensitivity = TP / (TP + FN) = true positives / disease
true positives / disease ... true negatives / disease ... negatives Positive Likelihood ... Ratio = Sensitivity ... Specificity) Negative Likelihood
Bandemia Overview

Normal: < 1%
Clinically significant: > 10%

Band neutrophils are slightly less mature than segmented neutrophils and
• Autoimmune diseases ... associated with greater likelihood ... count had a sensitivity ... Bandemia had a sensitivity ... #CBC #hematology
POCUS Stewardship
Right Indication - Right Interpretation -Right Integration
Indication → Pre-test Probability → Spectrum of Disease →
→ Spectrum of Disease ... → Sensitivity, ... Specificity → Likelihood ... 3: Spectrum of Disease ... Step 4: Sensitivity
Algorithm and Differential Diagnosis of Macroscopic Hematuria
Important Historical Elements:
- Painless: suggests malignancy
- Painful: suggests calculi/infection
- Urinalysis:
Algorithm and Differential ... dysmorphic RBC’s, RBC ... /WBC casts, proteinuria ... intrinsic renal disease ... #Differential #Algorithm
Hemolytic Anemia - Differential Diagnosis Algorithm
 • Sickle cells - Consider sickle cell disease (diverse genotypes):
Differential Diagnosis Algorithm ... Consider sickle cell disease ... hypertension • Unusual RBC ... acanthocytes - Consider RBC ... Differential #Diagnosis #Algorithm
Chronic Diarrhea - Differential Diagnosis Algorithm
Steatorrhea
 - Maldigestive
    • Pancreatic Insufficiency
 - Primary
Differential Diagnosis Algorithm ... • Celiac Disease ... Ileal Crohn's Disease ... (Screen with CBC ... Differential #Diagnosis #Algorithm
Causes of Thrombocytosis - Differential Diagnosis Algorithm
Spurious:
 • Artifact (redo CBC)
Autonomous:
 • Essential thrombocytosis
 • Polycythemia
Differential Diagnosis Algorithm ... Artifact (redo CBC ... disorders • Celiac disease ... Differential #Diagnosis #Algorithm
Causes of Proteinuria - Differential Diagnosis Algorithm
Persistent Proteinuria >150mg/d protein present on repeat testing including overnight
Differential Diagnosis Algorithm ... urine sediment - WBC ... /RBC casts ... Minimal change disease ... Differential #Diagnosis #Algorithm
Alkaline Phosphatase (ALP) Elevation - Differential Diagnosis Algorithm

ALP:
 - Enzymes that catalyze hydrolysis of organic phosphate
Differential Diagnosis Algorithm ... biliary Cholangitis (PBC ... granulamatous disease ... - Infiltrative diseases ... Differential #Diagnosis #Algorithm
"Recommended laboratory HIV testing algorithm for serum or plasma specimens. Based on: Centers for Disease Control
laboratory HIV testing algorithm ... on: Centers for Disease ... #Testing #HIV #CDC ... #Diagnosis #Algorithm