Respiratory Tract Infection Flashcards
What is optochain sensitive?
Streptococcus pneumonia
Streptococcus pneumonia is generally what-resistant?
Penicillin resistant
Predisposing factors for nosocomial pneumonia
Surgery, intubation, antibiotics, intensive care unit, immunosuppression
E. coli and Klebsiella are what?
Coliforms
Organisms causing nosocomial pneumonia
Pseudomonas aeruginosa, coliforms (E.coli, Klebsiella)
Treatment of severe nosocomial pneumonia
IV amoxicillin, metronidazole and Gentamicin. Step down to oral co-amoxiclav (total 7-10 days treatment)
Treatment of non-severe nosocomial pneumonia
Amoxicillin and metronidazole for 7 days
Clinical features of legionella pneumophila
Flu-like illness, renal failure, GI symptoms, mental confusion
Diagnosis of legionella
Serology, legionella urinary antigen. (PCR test on sputum also available)
Treatment for legionnaires disease
Erythromycin/clarithromycin
Fluoroquinolones e.g levofloxacin
Treatment of PCP
Cotriamoxazole, pentamidine
You would use a bronchoalveolar lavage or identification of cysts in induced sputum to identify what?
PCP. Who gets PCP? AIDS.
Organism causing acute epiglottitis?
Haemophilus influenza (gram negative)
Chocolate culture with small translucent colonies/ X and V test used to confirm what?
Haemophilus influenza causing actue epiglottitis. H. influenza requires both factors X and V to grow. Diagnosis by blood culture.
Treatment for acute epiglottitis?
ITU and ceftriaxone
Haemophilus influenze, streptococcus pneumonia and moraxella catarrhalis can cause what?
Exacerbations of COPD (all 3 organisms are present in the normal upper respiratory tract flora)
Casual bacteria not good for cystic fibrosis
Haemophilus influenza, staphylococcus aureus, pseudomonas aureginosa, Burkholderia cepacia
What can Aspergillus fumigatus cause?
Severe pneumonia/systemic infection/aspergillus (in immunocompromised) Diagnosed by culture
What is I.V amphotericin B used to treat?
Aspergillus fumigatus
Acid alcohol fast bacilli?
Mycobacterium lawl
What grows on Lowenstein-Jensen medium?
Mycobacterium tuberculosis
What grows on Bordet-Gengal medium?
Bordatella pertusis