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Clinical Micro > Bacteria Without Cell Walls > Flashcards

Bacteria Without Cell Walls Flashcards

1
Q

Basic description of mycoplasmataceae

A
  1. Smallest bacteria
  2. No cell wall
  3. Cell membrane with sterols
  4. No shape
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2
Q

Antibiotics that will not work against mycoplasma since it doesn’t have a cell wall

A

Penicillin, cephalosporin

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3
Q

What are the 3 pathogenic species of mycoplasma?

A
  1. Mycoplasma pneumoniae
  2. Mycoplasma genitalium
  3. Ureaplasma urealyticum
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4
Q

Number 1 cause of bacterial bronchitis and pneumonia in teenagers and young adults

A

Mycoplasma pneumoniae

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5
Q

Incubation period mycolpasma pneumoniae

A

2-3 weeks

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6
Q

Clinical symptoms of mycoplasma pneumoniae

A

Fever, sore throat, malaise, persistent dry hacking cough

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7
Q

Diseases associated with mycoplasma pneumonia

A

Walking pneumonia
7% develop Stevens Johnson syndrome (erythematous rash)

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8
Q

Chest x-ray findings for mycoplasma

A

Patchy infiltrate

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9
Q

How long does it take to recover from mycoplasma pneumoniae?

A

Mos symptoms - 1 week
Cough- 2 months

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10
Q

Tests for mycoplasma pneumoniae

A

1) cold agglutination
2) complement fixation
3) sputum culture (artificial media with cholesterol)
4) mycoplasma DNA probe
5) PCR

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11
Q

What are the atypical organisms that cause pneumonia?

A
  1. Mycoplasma
  2. Legionella
  3. Chlamydia
  4. Viruses

Named because penicillin does not work against them

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12
Q

Treatment for atypical pneumonia

A

Macrolides, tetracyclines, and quinolones

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13
Q

Examples of macrolides

A

Azithromycin
Clarithromycin

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14
Q

Example of tetracycline

A

Doxycycline

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15
Q

Example of quinolones

A

Ciprofloxacin, levofloxacin

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16
Q

Organism that causes 15-20% of non-gonocccocal urithritis in men

A

Mycoplasma genitalium

17
Q

Only way to dx mycoplasma genitalium

A

PCR

18
Q

Why mycolpasma genitalium is in our radar

A

Hard to test for and increasingly resistant to first line drugs doxy and azythromycin

19
Q

Mycoplasma bacteria that is a typical cause of urethritis in women

A

Ureaplasma urealyticum

20
Q

Why are the three bacteria that typically cause urethritis in women?

A
  1. Gonorrhea
  2. Chlamydia
  3. Ureaplasma urealyticum
21
Q

Mycoplasma that is a normal part of the flora of most young healthy sexually active women

A

Ureaplasma urealyticum

Clinical Micro (12 decks)

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