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Lung > Micro > Flashcards

Micro Flashcards

1
Q

+ssRNA virus with no envelope that uses ICAM to enter cells?

What diseases?

A

Picornaviridae
Rhinovirus
Coxsackievirus

Sinusitis, Pharynigitis, bronchitis

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2
Q

+ssRNA enveloped virus taht can cause SARS?

A

Coronavirus

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3
Q

-ssRNA virus with Hemagglutanin, Neuroaminidase and Protein F?

A

Parainfluenza Virus

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4
Q

-ssRNA virus with Protein G and Protein F?

A

RSV

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5
Q

Viral agent of 1 yr old with stridor?

A

RSV

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6
Q

Most common cause of bacterial sinusitis?

A

S. pneumoniae

H. influenzae

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7
Q

TX for bacterial sinusitis?

A

Amoxacillin

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8
Q

Gram + rod that grows black on potassium tellurite?

A

C. Diptheriae

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9
Q

Virulence factor responsible for whooping cough?

A

AB toxin that attacks Gi, increasing cAMP

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10
Q

Fungal cause of sinusitis?

A

Aspergillosis Fumagutus

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11
Q

Causes of bacterial bronchitis?

A

M pneumoniae

C pneumoniae

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12
Q

Fried egg with cold hemagglutinin?

A

M pneumoniae

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13
Q

Giesma stain to ID?

A

C pneumoniae

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14
Q

Causative agent of bronchiolitis?

A

RSV

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15
Q

What do Respigram and Palivizumab do?

A

Protect against RSV bronchiolitis or croup in immunocompromised infants?

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16
Q

Most common pneumonia agent in neonates?

A

S. Agalaactiae (Group B Strep)

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17
Q

Most common pneumonia in children?

A

Viral

M pneumoniae

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18
Q

Most common pneumonia in adults under 40?

A

M pneumonia
C pneumonia
(Atypical)

19
Q

Most common pneumonia in ages >40?

A

S. pneumoniae

20
Q

Most common hospital-acquired pneumonia?

A

Gram - rods (Klebsiella)

S Aureus

21
Q

Pnuemonias in immunocompromised?

A

Klebsiella
S pneumoniae
Pneumocystis jirovecii
Nocardia asteroides (acid fast)

22
Q

Alcoholic pneumonia?

A

S pneumoniae

Klebsiella

23
Q

IV drug pneumonia?

A

S aureus

24
Q

Chronic steroid use?

A

Nocardia

25
Q

Grows on Bordet-Gengou Agar

A

Bordatella pertussis

26
Q

How does the Influenza virus survive phagocytosis?

A

Escape from the phagosome

27
Q

Patient presents with cough, chest pain, fever, headache, sore throat. Inflammed oral mucosa and a clear CXR. What disease?

A

Bronchitis

28
Q

What disease is secondary to influenza in high risk groups?

A

Pneumonia

29
Q

Where does the influenza virus colonize and replicate?

A

epithelial lining or respiratory tracy and nasal turbinates

30
Q

Most common post-infectious (influenza) pneumonia?

A

S pneumoniae

S Aureus

31
Q

Most common causes of rhinitis (2)?

A

Rhinovirus

Coronavirus

32
Q

Which gram +, catalase -, b-hemolytic organism is Bacitracin sensitive?
Resistant?

A 
Pyogenes = Sensitive
Algalactiae = Resistance (galactic resistance)
33
Q

Why give Erythromycin in someone with Pertussis?

A

Kills bacteria in secretions, decreasing spread.

Also give it as prophylaxis for those in close contact

34
Q

What is the timing for the 3 stages of pertusis?

A

Stage 1 = 1-2 wks (Flu)
Stage 2 = 3wks-2mo (Barking cough)
Stage 3 = Recovery after that

35
Q

Who gets the Adenovirus vaccine?

A

Military personel

36
Q

Difference in causes of pharyngitis for Adults/kids < 3 VS ages 5-15?

A

Viral = most common cause in Kids < 3/Adults

S pyogenes, H influenzae = Ages 5-15

37
Q

Most common agents that cause pneumonia in COPD patients?

A

H influenzae = #1

M Catarrhalis = #2

38
Q

4 most common organisms for post-influenza infection?

A

S Aureus
S Pneumoniae
H influenzae
S pyogenes

39
Q

How do you confirm influenza infection?

A

Rapid antigen test from swab or culture and test agains hemoglobin agglutination

40
Q

3 ways to identify bordatella pertusis?

A

Bordet Gengou agar
Immunoflouresence
ELISA

41
Q

Which pneumonia cause are asplenic patients at a higher risk for?

A

H influenza

42
Q

Best way to visualize Legionella pneumophila?

A

Silver Stain

Cultured on charcoal with Fe and cysteine

43
Q

What population is susceptible to legionella pneumophila?

A

Elderly Smokers

44
Q

Gram + beaded filaments and weakly acid fast staining.

Causes pneumonia in immunocompromised patients?

A

Nocardia

Lung (6 decks)

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