28 results
Tuberculosis Testing

LATENT TB
• LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
Tuberculosis Testing ... Tuberculin skin testing ... (TST) False-negative ... recommended because false-negative ... #Diagnosis #Workup
Syncope Diagnostic Testing and Evaluation: Cost Effectiveness
Frequency obtained - Abnormal findings - Helped determine etiology of
Syncope Diagnostic Testing ... Syncope #diagnosis #workup ... #testing #Cost ... Effectiveness #table
Intraoperative Massive Blood Loss - Guidelines for Crises in Anaesthesia
Expected or unexpected major haemorrhage

❶ Call for
with them): • Activate ... required. ❻ Begin active ... point of care testing ... • Use lab testing ... Diagnosis #Management #Workup
The Spectrum of Tuberculosis

As shown in the graphic from our Primer, exposure to M. tuberculosis can
#Tuberculosis #Testing ... IGRA #Spectrum #Table ... #Subclinical #Active
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 ... Specificity and False ... BAL samples • False ... concurrent admin mold-active ... Galactomannan #Fungal #Testing
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
in SIADH RAAS Inactive ... Cerebral Salt Wasting ... diuresis) RAAS Active ... differential #diagnosis #table
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
Familial renal Mg wasting ... Low #Magnesium #Table ... Classification #Causes #Workup
IgG4-Related Disease
Clinical history:  Man, 60 years, multiorgan involvement, unique or multiple inflammatory pseudotumor
4 phenotypes:
 •
nodes) • Some false ... monoclonality • "Reactive ... management #phenotypes #workup
Fungal Biomarkers: Beta-D-Glucan and Aspergillus Galactomannan
Beta-D-Glucan:
 • Polysaccharide cell wall component of many fungi
 • Pathogens:
breakthrough IFI in HM • False ... admin of mold-active ... recipients, CGD pts • False ... Frozen ice-pops (in setting
Drugs Used for the Treatment of COVID-19 Infection

** Editor Note (from ophthalmology MD input) - Hydroxychloroquine/chloroquine
risks/benefits in setting ... = mechanism of action ... #Pharmacology #Table