31 results
1,3 Beta-D-Glucan and Galactomannan - Pathogens, and Testing Characteristics
1,3 ĂŸ-D-glucan:
 • Most fungi excluding mucor and
Pathogens, and Testing ... and pneumocystis False ... Glucan-containing gauzes ... other fungi • False ... #Sensitivity #Specificity
Emergency physician interpretation of point-of-care ultrasound for identifying and grading of hydronephrosis in renal colic compared
VisualAbstract #POCUS ... #Sensitivity #Specificity ... #Testing
Accuracy of abdominal ultrasound for the diagnosis of small bowel obstruction in the emergency department

https://www.ncbi.nlm.nih.gov/pubmed/30181794

Our data
of 93.8% and a specificity ... sensitivity of 94.3% and specificity ... Obstruction #SBO #POCUS ... Diagnosis #Accuracy #Testing
1,3-Beta-D-Glucan and Galactomannan Testing Sensitivity Specificity and False Positives
1,3-Beta-D-Glucan
 • Cell wall component of many fungi
Galactomannan Testing ... Sensitivity Specificity ... and False Positives ... 96% • Higher specificity ... Galactomannan #Fungal #Testing
Fungal Biomarkers: Beta-D-Glucan and Aspergillus Galactomannan
Beta-D-Glucan:
 • Polysaccharide cell wall component of many fungi
 • Pathogens:
Sensitivity & Specificity ... 96% - Higher specificity ... breakthrough IFI in HM • False ... recipients, CGD pts • False ... Frozen ice-pops (in setting
Urine Drug Screens - Common drugs that may cause false positive tests 

Amphetamines:
Bupropion, Labetalol, Methylphenidate, Phenylephrine,
drugs that may cause ... false positive ... FalsePositive #Testing
D-dimer
Plasma D-dimer is a product of clot breakdown, released upon degradation of polymerized, crosslinked fibrin. Elevated
age, which can cause ... a ↓ specificity ... (i.e. more false ... Specificity can ... adjusted d-dimer testing
"Imagine you're running airport security, screening passengers (tests) to catch dangerous items (diseases). Now meet your
Sensitivity and Specificity ... Specificity, on ... miss some real cases ... High specificity ... #medicine #specificity
The value of point-of-care ultrasound for detecting nail bed injury in [the] ED

American Journal of Emergency
Subungual #Fracture #POCUS ... #Sensitivity #Specificity ... #Testing
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Specificity (rule ... FN) Higher specificity ... null when it’s false ... when it is indeed false ... but not on the causal