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W09 Micro
Quiz 4
113
Other
Professional
02/03/2009

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Term
isoniazid and rifampin, fluroquinolones
Definition
Extensively drug-resistant TB is resistant to almost all drugs that are used to treat TB. These drugs include ___ and ___, ___ and at least 1 of the 3 injectible drugs.
Term
5-10%, Mtb infected persons w/no disease are not contagious
Definition
__-__% Mtb infections develop TB.
Term
IV = inhalation or severe cutaneous, topical = mild cutaneous
Definition
IV Ciprofloxacin is used to treat ___ or severe ___ anthrax. Topically it treats mild ___ anthrax.
Term
doxycycline
Definition
___ is used if there is a resistance developed to ciprofloxacin.
Term
meningitis
Definition
___ is bacterial or viral inflammation of the meninges leading to increase in WBCs in CSF.
Term
Cerebral dysfunction
Definition
Confusion, delirium and declining consciousness level are signs of ___ ___.
Term
streptococcus pneumoniae
Definition
___ ___ is the most frequently observed etiologic agent of bacterial meningitis.
Term
True and true!
Definition
T/F: Strep pneumoniae is part of the normal flora of the nasopharynx. It is also an important opportunistic pathogen in pneumonia, meningitis, sinusitis and otitis media.
Term
penumoniae, meningitis, sinusitis, otitis media
Definition
Strep pneumoniae is an important opportunistic pathogen in ___, ___, ___ and ___ ___.
Term
pneumolysin
Definition
Strep pneumoniae produces ____ a cytotoxic toxin for phagocytic and respiratory epithelial cells. It activates complement and induces production of TNF alpha and interleukin 1.
Term
False! It produces few toxins, HAS a capsule and causes an intense inflammatory process.
Definition
T/F: Strep pneumoniae produces few toxins, has no capsule and generates an intense inflammatory process.
Term
23
Definition
Pneumovax (PCV23) is a pneumococcal vaccine made from capsules of ___ different serotypes.
Term
PCV7
Definition
PCV__ is recommended for children 2months to 23 months. It prevents meningitis and cuts down on otitis media.
Term
neisseria meningitis
Definition
___ ___ is encapsulated, g(-) diplococcus virus with a lipooligosaccharide endotoxin.
Term
False! It is commonly found in the nasopharnyx.
Definition
T/F: Neisseria meningitidis is not commonly found in the nasopharynx of healthy people.
Term
1. leg pain, 2. cold hands/feet, 3. abnormal skin color
Definition
Name 3 important clinical features of neisseria meningitidis.
Term
LOS (lipooligosaccharide)
Definition
____ endotoxin is associated with rash in neisseria meningitidis infections.
Term
100%
Definition
Mortality of neisseria meningitidis = ___% if untreated.
Term
penicillin
Definition
Neisseria meningitidis' antibiotic of choice is ____. Alternatives include chloramphenicol or cephalosporins.
Term
haemophilus influenzae
Definition
The Hib vaccine immunizes against ____ ____.
Term
haemophilus
Definition
___ are small, pleiomorphic g (-) bacteria.
Term
haemophilus influenzae, type b
Definition
___ ___ is part of the normal flora in 80% of humans and usually is nonencapsulated. It has 6 different types with type ___ being the most pathogenic.
Term
osteomyelitis
Definition
Clinical disease caused by S. pneumoniae is likely to be any of the following except: a) meningitis b) otitis media c) osteomyelitis d) sinusitis e) pneumonia
Term
neisseria meningitidis
Definition
Epidemic meningitis on a college campus is most likely due to infection with ____ ____.
Term
meningitis
Definition
HGCV or Hib vaccine is administered to infants to prevent ____.
Term
capsule
Definition
The most significant virulence factor possessed by Haemophilus influenzae is its ____.
Term
both b/d otitis media and sinusitis
Definition
Non-encapsulated Haemophilus influenzae found as part of the normal nasopharyngeal flora are most associated with which of the following infections: a) influenza b) otitis media c) meningitis d) sinusitis e) both b/d
Term
haemophilus influenzae type b
Definition
Immunization has been most successful to date in reducing the incidence of meningitis due to ____ ____ type ___.
Term
<2yrs
Definition
The primary target population for the pneumococcal vaccine (PCV7) licensed in 2000 is children ___ ___ years.
Term
strep pneumoniae
Definition
The most common cause of bacterial meningitis today is ____ ___.
Term
neisseria meningitidis
Definition
A patient with meningitis has g(-) diplococci isolated from CSF. The causative agent is ___ ___.
Term
2-23 months
Definition
The recently approved pneumococcal conjugate vaccine PCV7 is recommended for ___-___ months of age.
Term
otitis media
Definition
___ ___ is typically caused by certain members of the oral flora, haemophilus influenzae and streptococcuz pneumoniae.
Term
haemophilus influenzae type b
Definition
___ ___ has its maximum carriage rate between ages 3-5 yrs and in over-crowded conditions.
Term
bacterial meningitis caused by haemophilus influenzae type b
Definition
___ ___ usually begins as a mild URTI leading to seizures, hemoparesis and altered mental status.
Term
HbCV or Hib for haemophilus influenzae type b
Definition
___ or ____ are capsular polysaccharides conjugated to protein vaccine given intramuscularly.
Term
agalactiae
Definition
Strep ___ is a GBS and common cause of meningitis is neonates. It is usually transmitted from mother during birth.
Term
listeria monocytogenes
Definition
___ ___ is a g(+) bacillus usually transmitted via contaminated food. There is no vaccine and it causes listerosis.
Term
listeria monocytogenes, listeriolysin O
Definition
___ ___ is a g(+) facultative coccobacilli that does not form spores. It grows in macrophages, epithelial cells and cultured fibroblasts. Virulent strains produce a hemolysin, ___ ___.
Term
T/F... It is found in soil and such, but it usually only causes disease in neonates, elderly, pregnant women, immunocompromised
Definition
T/F: Listeria monocytogenes is isolated from soil, water and vegetation and commonly causes disease in healthy patients.
Term
listeria monocytogenes (listeriosis)
Definition
____ caused a multistate outbreak in 1998, killing 6 adults and aborting 2 women's pregnancies... there was a recall on deli meats.
Term
penicillin or ampicillin alone or combinded with gentamicin, alternative: erythromycin
Definition
What is the antibiotic of choice for listeria infections? What is the alternative?
Term
strep pneumoniae and haemophilus influenzae
Definition
___ ___ and ___ ___ are the most common causes of sinusitis and otitis media.
Term
bordetella pertussis
Definition
___ ___ is a g(-) nonmotile, strictly aerobic coccobacillus. It produces several toxins, has LPS heterogenous and is highly potent.
Term
bordetella pertussis
Definition
___ ___ causes the whooping cough. It has 3 phases and is most severe in infants.
Term
catarrhal phase, convalescent phase, paroxysmal/spasmodic phase
Definition
___ phase of pertussis is indistinguishable from other URT infections. ___ phase is when the patient is in recovery. ____ phase is when the patient experiences violent repetitive coughing where the lungs are forcefully emptied with a whooping inspiration.
Term
respiratory droplets
Definition
How is pertussis transmitted?
Term
False! The whole cell has worse adverse effects, such as erythema/swelling/pain at injection site, drowsiness, convulsions, acute encephalopathy.
Definition
T/F: The acellular pertussis vaccine has a higher incidence of adverse reactions than the whole cell pertussis vaccine.
Term
inactivated pertussis toxin
Definition
What does the acellular pertussis vaccine contain?
Term
2, 4, 6 primary; 15-18 months, 4-6 years
Definition
The primary DtaP series is given at ___ months, ___ months and ___ months. Boosters are given at ___-___ months and ___-___ yrs or every 10 years after that.
Term
5-10 years
Definition
Protective immunity to pertussis lasts __-__ years.
Term
11-18, 19-64
Definition
The new ACIP recommendations for the DtaP vaccine are adolescents age __-__ years and adults age ___-___ years.
Term
corynebacterium
Definition
___ is a g(+) facultative pleiomorphic, club-shaped bacteria that has no flagella, spores or capsules.
Term
corynebacterium
Definition
___'s cell wall contains meso-diaminopimelic acid (peptidoglycan) and is related to mycobacterium.
Term
corynebacterium diptheriae
Definition
____ ____ is the only major pathogen of man in this genus. It is endemic in humans, transmitted by inhalation or skin contact.
Term
False! It is not invasive... everything else is true.
Definition
T/F: Corynebacterium diphtheriae is invasive, causes a mild inflammatory reaction and its virulence comes from the tox + gene of the betaphage (prophage).
Term
corynebacterium diphtheriae
Definition
___ ____'s toxin blocks protein synthesis in eukaryotic cells and its production is inversely related to iron.
Term
respiratory diphtheriae
Definition
___ diphtheria causes a toxin-induced pseudomembrane which develops on posterior oral cavity/oropharynx and is usually white/glossy --> gray/dirty --> green/black.
Term
True!
Definition
T/F: The green/black necrosis of respiratory diptheria is caused by necrotic coagulum of fibrin, WBCs, RBCs, respiratory epithelial cells and bacteria.
Term
cutaneous diphtheria
Definition
___ diphtheria is common in the tropics and patient rarely shows signs of intoxication. This actually acts as immunizing agent.
Term
True! penicillin or erythromycin and diphtheria antitoxin produced in horses
Definition
T/F: Treatment for diphtheria includes an antibiotic and an antitoxin.
Term
legionella pneuomophila
Definition
___ ___ is a g(-) aerobic bacillus with a single flagella and multiple pili. It can inhabit water, is tolerant to chlorine and is transmitted by aerosolization, aspiration and instillation into lungs.
Term
legionnaires' disease
Definition
Pontiac fever was an outbreak of ____ ___.
Term
erythromycin
Definition
Legionnaires' disease is treated with which antibiotic?
Term
mycoplasmataceae
Definition
___ is the smallest free living bacteria, has no cell wall, requires sterols for growth and is resistant to penicillin and cephalosporins.
Term
mycoplasma pneumoniae
Definition
___ ___ causes walking pneumonia. It has a prolonged IP and its cough is a hallmark of this type of infection. It is treated with erythromycin/axithromycine or tetracycline/doxycycline.
Term
chlamydia, gonorrhea, syphilis, chancroid
Definition
Rank the following in order of reported cases: syphilis, chlamydia, gonorrhea, chancroid.
Term
chlamydiae
Definition
____ is a g(-) obligate intracellular bacteria. Its cell wall has inner and outer membrane but lacks peptidoglycan layer. It possesses LPS, but lacks the ability to produce ATP.
Term
chlamydia trachomatis
Definition
___ ___ is responsible for trachoma, conjunctivitis, PID and STDs.
Term
75%, 50%
Definition
__% of females and ___% of males have asymptomatic chlamydia trachomatis infections
Term
tetracycline or erythromycin for 21 days or a single dose of azithromycin
Definition
Which antibiotics are effective in treating chlamydia?
Term
True!
Definition
T/F: If a patient is diagnosed with gonorrhea, you treat for chlamydia.
Term
40%
Definition
___% of women that have untreated chlamydia develop PID.
Term
neisseria gonorrhoeae
Definition
___ ___ is aerobic, g(-) diplococcus bacteria with LOS instead of LPS. It has pili, a capsule and has the ability to invade epithelial cells.
Term
neisseria gonorrhoeae
Definition
___ ___ produces IgA1 protease and beta-1 lactamase.
Term
95%
Definition
___% of males with gonorrhea have acute symptoms (purulent discharge and dysuria)
Term
cervix
Definition
The primary site of gonorrheal infections in females is the ____.
Term
salpingitis
Definition
___ is the inflammation of the fallopian tubes.
Term
gonorrhea, chlamydia
Definition
Ceftriaxone, cefixime or a fluoroquinolone are recommended for the treatment of ____. It is also recommended to combine that treatment with doxycycline or azithromycin for treating ____ as well.
Term
pseudomonadaceae (pseudomonas)
Definition
____ is a g(-) facultative anaerobic bacteria that utilizes few CHOs (does not ferment sugars), produces pigments and possesses cytochromeoxidase and a capsule.
Term
pseudomonas aeruginosa
Definition
___ ___ can survive in moist environments, more resistant to chemical disinfectants that other vegetative bacteria, has a low prevalence in the normal flora and often causes opportunistic nosocomial infections.
Term
pseudomonas aeruginosa
Definition
___ ___ has a pili, polysaccharide capsule, endotoxin and exotoxin A which inhibits protein synthesis.
Term
exotoxin A
Definition
P. aeruginosa's ____ ___ inhibits protein synthesis by inactivating elongation factor 2.
Term
True!
Definition
T/F: Pseudomonas and respiratory infections have capsules.
Term
pseudomonas aeruginosa
Definition
___ ___ causes respiratory infection, infective endocarditis and soft tissue infections.
Term
pseudomonas aeruginosa
Definition
___ ___ skin infections have a characteristic blue-green exudate and pathognomonic fruity/rotten peaches odor.
Term
pseudomonas aeruginosa
Definition
___ ___ is primarily a nosocomial infection and is treated with ceftazidime or extended spectrumpenicillins or imipenem/cilastatin
Term
ciprofloxacin hydrochloride
Definition
A pseudomonas aeruginosa UTI is treated with ___ ___.
Term
pontiac fever
Definition
Healthy individuals infected with Legionella pneumophilia are most likely to develop symptoms of ___ ___.
Term
asphyxia
Definition
A frequent cause of death in patients with diphtheria is ____.
Term
bordetella pertussis
Definition
Whooping cough is caused by ___ ___.
Term
mycoplasma pneumoniae
Definition
“Walking pneumonia” often has a cough as the primary manifestation and is caused by ____ ____.
Term
gonorrhea
Definition
The microscopic finding of gram negative diplococci in smears from pus or exudate is a valuable tool in the diagnosis of ____.
Term
chlamydia
Definition
Patients diagnosed with gonorrhea should also be treated for ___.
Term
c) both!
Definition
PID and loss of fertility in women may result from untreated a) gonorrhea b) chlamydia c) both d) neither
Term
women / chlamydia
Definition
Asymptomatic infection is most common in _______ with ________.
Term
a/b only
Definition
Neonatal conjunctivitis may develop in infants exposed to which of the following during passage through the birth canal? a) chlamydia trachomatis b) neisseria gonorrhoeae c) treponema palladium d) a/b only e) all of the above
Term
bacterial vaginosis
Definition
___ ___ is caused by normal flora in the vagina.
Term
pseudomonas aeruginosa
Definition
A ubiquitous, free living gram negative bacillus which is responsible for a variety of infections in debilitated and compromised patients and is a major cause of burn wound sepsis, hospital acquired UTIs, and respiratory infection in cystic fibrosis patients is ___ ___.
Term
chlamydia
Definition
The most common STD in the US with the greatest # of new cases each year is ___.
Term
Treponema pallidum
Definition
___ ___ is a spirochete that causes syphilis.
Term
treponema pallidum
Definition
___ ___ is a thin, helical g(-) bacteria that causes the 3rd most common bacterial STD in the US. It is extremely labile and does not survive exposure to drying or disinfectants.
Term
syphilis
Definition
___ is not highly contagious and transmission is most likely during its primary stage.
Term
Primary syphilis
Definition
___ syphilis presents with a chancre where spirochete is inoculated.
Term
secondary
Definition
___ syphilis presents with a flu-like snydrome and papulosquamous/pustular rash that slowly resolves over weeks-months.
Term
False!
Definition
T/F: You can have asymptomatic syphilis.
Term
Tertiary syphilis
Definition
___ syphilis presents with granulomatous lesions called gummas found in skin, bone and other tissues. It is no longer infectious at this stage.
Term
syphilis
Definition
___ is diagnosed by darkfield microscopically examining exudate from skin lesions. It cannot be cultured in vitro.
Term
penicillin
Definition
___ is the drug of choice for syphilis.
Term
4th month
Definition
Transmission of congenital syphilis is rare prior to the ___ month of gestation. It is usually associated with primary or secondary syphilis.
Term
Early congenital syphilis
Definition
___ congenital syphilis presents with osteochondritis, snuffles, desquamative rash, anemia, hepatosplenomegaly and jaundice.
Term
late congenital syphilis
Definition
___ congenital syphilis presents with frontal bosses, saddle nose, short maxilla, protruding mandible, interstitial keratitis and 8th nerve deafness.
Term
late congenital syphilis
Definition
___ congenital syphilis presents with high palatal arch, hutchinson's incisors, and mulberry molars.
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