36 results
1,3 Beta-D-Glucan and Galactomannan - Pathogens, and Testing Characteristics
1,3 ß-D-glucan:
 • Most fungi excluding mucor and
Pathogens, and Testing ... and pneumocystis False ... other fungi • False ... Galactomannan #Pathogens #Testing ... #Sensitivity #Specificity
What is Fecal Occult Blood Testing (FOBT)
 • Screening for colorectal cancer in average risk population
evaluation • False ... cauliflower, ETOH • False ... Does not change management ... to unnecessary testing ... #OccultBlood #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 ... 96% • Higher specificity ... in BAL does not differentiate ... Galactomannan #Fungal #Testing
Fungal Biomarkers: Beta-D-Glucan and Aspergillus Galactomannan
Beta-D-Glucan:
 • Polysaccharide cell wall component of many fungi
 • Pathogens:
Sensitivity & Specificity ... breakthrough IFI in HM • False ... BAL GM does not differentiate ... recipients, CGD pts • False ... Frozen ice-pops (in setting
Helicobacter Pylori (H. pylori) Infection - Diagnosis and Management - GrepMed Handbook
Presentation: Dyspepsia / Peptic Ulcer
Diagnosis and Management ... Ag, Urea Breath Testing ... (UBT) - ↑ false ... hold 2w before testing ... (IgG) - cannot differentiate
Acute Kidney Injury - Differential Diagnosis Framework
PRERENAL:
 - Intrarenal vasoconstriction-hemodynamically mediated
 - Systemic vasodilation
 - Volume
Kidney Injury - Differential ... urinalysis, labs - Management ... renal biopsy - Management ... ultrasonography - Manaqement ... #Injury #AKI #Differential
D-dimer
Plasma D-dimer is a product of clot breakdown, released upon degradation of polymerized, crosslinked fibrin. Elevated
can cause a ↓ specificity ... (i.e. more false ... Specificity can ... adjusted d-dimer testing ... pathophysiology #hematology #differential
Diagnostic algorithm for the workup of hypercalcemia. The diagnostic workup for patients presenting with hypercalcemia rests
) was 0.80 and specificity ... Thus, further testing ... Hypercalcemia #Workup #Differential
Group A Strep Pharyngitis, also known as  Strep Throat. 

In addition to symptomatic presentation, a
retail/community setting ... post regarding specificity ... penicillin allergy testing ... #StrepThroat #Management
CNS Infection in HIV / AIDS - Differential Diagnosis Framework

Principles of HIV-Associated CNS Opportunistic Infections:
 •
in HIV / AIDS - Differential ... at 50–90%, but specificity ... of serum CrAg testing ... comparable to CSF testing ... CNS #Infections #differential