929 results
Important Biostatistics and Epidemiology Equations

Sensitivity = TP / (TP + FN) = true positives / disease
TP + FN) = true positives ... disease absent Positive ... TP + FP) = true positives ... / all positives ... #calculations #diagnosis
Medications that Can Cause False Positives on Drug Tests

Urine drug screens (UDSs) are simple to use,
Can Cause False Positives ... yielding false-positive ... can cause false positives ... Amphetamine false positives ... #differential #diagnosis
Multi-System Inflammatory Syndrome in Children (MIS-C) vs. Kawasaki Disease
CDC Case Definition for MIS-C;
 • < 21
for disease • Positive ... Kawasaki #Comparison #diagnosis ... #peds #pediatrics
Lung Ultrasound for Diagnosing Pneumonia - Scan through 6 zones (3 per side) 1. Midclavicular line
Lung Ultrasound ... for Diagnosing Pneumonia ... the diaphragm #Diagnosis ... #Peds #EM #PICU
Causes of Pediatric Wheezing - Differential Diagnosis Algorithm
CXR Abnormal:
 • Pulmonary Sequestration
 • Congenital Adenoid Cystic
- Differential Diagnosis ... : • Asthma* Positive ... #Differential #Diagnosis ... Algorithm #Causes #Peds
Positive Babinski Reflex with dorsiflexion of the big toe after stroking the sole of the foot.
This
Positive Babinski ... Reflex #Upgoing #Positive ... #Peds #Pediatrics
Kawasaki Disease - Workup and Diagnostic Algorithm #Diagnosis #Management #Peds #Pediatrics #Kawasaki #Disease #Algorithm #CRASH #BURN
Disease - Workup and Diagnostic ... Algorithm #Diagnosis ... #Management #Peds
Lung ultrasound pathology in a COVID-19 positive patient
 - Few B-lines (vertical white lines)
 - Confluent
Lung ultrasound ... in a COVID-19 positive ... Clinical #Lung #Ultrasound
Central retinal artery occlusion (CRAO). Positive "spot sign" on Ocular Ultrasound

78 yo M with sudden onset
Positive "spot sign ... " on Ocular Ultrasound ... POCUS #Ocular #Ultrasound
Summary of Agents Potentially Contributing to False Positives on Urine Drug Screens (UDS)
Marijuana Metabolites
 • dronabinol,
Contributing to False Positives ... Rate of False Positives ... result in false positives ... enough to prevent positive ... Testing #Laboratory #diagnosis