933 results
Pseudogout: pathogenesis and clinical findings
 - Idiopathic (vast majority of cases) -> Mechanism unknown
 - Familial
high-resolution ultrasound ... CPPD Crystals - Positively ... Signs #Symptoms #Pathophysiology ... #Diagnosis
Autoimmune Hemolytic Anemia (AIHA) Pathophysiology - Warm vs Cold AIHA
Warm AIHA:
 - 70%; IgG mediated
 -
Anemia (AIHA) Pathophysiology ... , C3 positive or ... IgG negative, C3 positive ... Hemolytic #Anemia #Pathophysiology ... #diagnosis #hematology
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
The biotrauma hypothesis of ventilator-induced lung injury. IL = interleukin; PEEP = positive end-expiratory pressure; Pplat
interleukin; PEEP = positive ... #Pathophysiology
Pathophysiology Based Approach to Hyponatremia - Diagnostic Algorithm

Not the "classic" Volume based approach. 

#Hyponatremia #Algorithm #Pathophysiology
Pathophysiology ... Hyponatremia - Diagnostic ... Hyponatremia #Algorithm #Pathophysiology ... #Diagnosis #Differential
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
Hemothorax - Thoracic ultrasound in trauma
False positive for consolidated lung- organized clot in pleural space after
Hemothorax - Thoracic ultrasound ... trauma False positive ... Hemothorax #Thoracic #ultrasound