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World TB Day

TB factoids

QuestionAnswer
lower respiratory tract is normally sterile if directly sampled
Acceptable sputum spec: <__ squamous epithelial cells/low power field 10
Macrophages: Activated phagocytic cells common in ____ fungal, acid-fast & some atypical bacterial infections
Eosinophils: Indicative of ____ allergic reaction or parasitic infection
Most common cause of bacterial pneumonia (70%) Streptococcus pneumoniae
Lancet shaped gram positive cocci in pairs Streptococcus pneumoniae
Culture never indicated in chronic bronchitis
if you suspect atypical bacteria you should notify the lab in advance
where do you grow leprosy armidillo foot pads
TB infection spread person to person via ____ respiratory droplets in air (cough)
Positive PPD Zone Size >= __ mm if no risk factors 15
Positive PPD Zone Size >= __ mm if co-morbid risk factors;Diabetes, chronic renal failure, cancer, IVDA, congregate setting, foreign born/immigrant <5yrs from endemic area (Asia, Africa, Latin America), Mycobacteriology lab tech, gastrectomy 10
Positive PPD Zone Size >= __ mm if HIV+, contact of TB+ person, organ transplant/immunosuppression, fibrotic CXR, on 15 mg prednison/day, or TNF alpha inhibitor 5
substance used for control in PPD test candida albicans antigen
the inability to react to skin tests because of a weakened immune system anergy
more specific test for LTBI & can help exclude BCG or Mycobacterium not TB reactions. Interferon Gamma Release Assay
vaccine against tuberculosis Bacille Calmette-Guérin (BCG)
Created by: bwyche on 2009-01-15



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