CHEMOTHERAPEUTIC Flashcards

(61 cards)

1
Q

drugs designed to target foreign
organisms that have invaded and infected the body of a human
host.

A

ANTIINFEVTIVE AGENTS

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2
Q

Vary in effectiveness against invading
organisms

A

Spectrum of Activity

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3
Q

Cause cell death

A

batericidal

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4
Q

Interfere with the ability of the cells to
reproduce or divide

A

BACTERIOSTATIC

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5
Q

Reasons for incapability of the
immune system to deal with
invading organisms:

A
  1. antiinfective drugs cannot
    toally eliminate the pathogen
    without causing severe toxicity
    to the host.
  2. These patients do not have
    the inflammatory or immune
    response in place to deal with
    with even a few invading
    organisms
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6
Q

Involves a complex interaction
among chemical mediators,
leukocytes, lymphocytes,
antibodies, and locally released
enzymes and chemicals.

A

Human Immmune Response

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7
Q

When response is completely
functional and all necessary
proteins, cells, and chemicals are
being produced by the body, it
can isolate and eliminate foreign
proteins (bacteria, fungi, virus)

A

Human Immune Response

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8
Q

can be natural or acquired and
refers to the ability over time to
adapt to an antiinfective drug
and produce cells that are no
longer affected by a particular
drug.

A

Resistance

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9
Q

is important in preventing
the development of resistance.

A

drug dosing

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10
Q

treatment of infections
before they occur

A

prophylaxis

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11
Q

ADVERSE REACTIONS TO ANTIBIOTIC THERAPY

A
  1. kidney Damage
  2. Gastrointestinal Toxicity
  3. Neurotoxicity
  4. Hypersensitivity Reaction
  5. Superinfection
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12
Q

Occurs more frequently with drugs that are metabolized by the kidney
and then eliminated in the urine

A

kidney damagae

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13
Q

Many anti-infective agents have direct toxic effects on the cells
lining the GI tract, causing nausea, vomiting, stomac

A

Gastrointestinal Toxicity

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14
Q

Some antiinfectives can damage or interfere with the function of
nerve tissue, usually in areas where drugs tend to accumulate in
high concentrations

A

Neurotoxicity

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15
Q

Most of these agents, which are protein
bound for transfer through the cardiovascular system, are able to
induce antibody formation in susceptible people.

A

hypersensitivity

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16
Q

One offshoot of the use of anti-infectives, especially broadspectrum anti-infectives, is destruction of the normal flora

A

superinfection

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17
Q

are infections that occur when opportunistic pathogens that were
kept in check by the “normal” flora bacteria have the opportunity
to invade tissues.

A

superinfection

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18
Q

chemicals that inhibit specific bacteria

A

antibiotics

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19
Q

Antibiotic are made three ways

A
  1. Living of Microorganism
  2. Synthetic Manufacturer
  3. Genetic Engineering
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20
Q

Are those whose cell wall retains a strain known as Gram’s strain or
resists decolorization with alcohol during culture and sensitivity testing

A

Gram Positive Bacteria

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21
Q

Gram Positive Bacterial usually found at the

A

Respiratory Tract or soft tissues

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22
Q

Gram negative Bacterial is usually found at the:

A

genitourinary tract and gi tract

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23
Q

Are those whose cell walls lose a strain or are decolorized by alcohol

A

Gram Negative Bacteria

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24
Q

Depend on oxygen for survival

A

Aerobic Bacteria

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25
Do not use oxygen
Anaerobic bactera
26
Do not use for longer than 7 to 10 days
Aminoglycoside
27
Group of powerful antibiotics used to treat serious infections caused by gram-negative aerobic bacilli
Aminoglycoside
28
Sample of aminoglycoside
amikacin, gentamicin, kanamycin, neomycin, streptomycin, tobramy
29
Are poorly absorbed from the GI tract but rapidly absorbed after intramuscular (IM) injections
Pharmacokinetic of Aminoglycoside
30
Are relatively new class of broad-spectrum antibiotics effective against gram-positive and gram-negative bacteria
Carbapenem
31
Example of Carbapenem
Meropenem, Diropenem, Ertapenem, Imipemen-clistatin
32
Not for use in patients younger than 18 years old
ertapenem
33
Used with caution in patients with inflammatory bowel disorders
Meropenem
34
Effective against gram-positive bacteria that are affected by penicillin G, as well as the gram-negative bacteria P. mirabilis, E. coli, and K. pneumoniae * cefadroxil, cefazolin, cephalexin
1st generation Cephalosporin
35
Effective against previously mentioned strain as well as H. influenza, Enterobacter aerogenes, and Neisseria species
2nd generation of Cephalosporins
36
Effective against all of the previously mentioned strains, as well as gram-negative bacilli Serratia marcescens * cefdinir, cefotaxime, ceftibuten, ceftizoxime, ceftriaxone
3rd generation of Cephalosporins
37
active against gram-negative and gram-positive organisms including cephalosporin resistant staphylococci and P. aeruginosa
4th gen of Cephalosporins
38
Interfere with the action of DNA enzymes necessary for the growth and reproduction of the bacteria leading to cell death
Flurouquinolones
39
indicated for treating infections caused by susceptible strains of gram-negative bacteria, including E. coli, P. mirabilis, K. pneumoniae, Enterobacter cloacae, Proteus vulgaris, Proteus rettgeri,Morganella morganii, M. catarrhalis, H. infl uenzae, H. parainfluenzae, P. eruginosa, Citrobacter freundii, S. aureus, Staphylococcus epidermidis, some Neisseria gonorrhoeae, and group D streptococci infections frequently include urinary tract, respiratory tract, and skin infections
Flurouquinolones
40
was the first antibiotic introduced for clinical use.
Penicilin
41
used Penicillium molds to produce the original penicillin in the 1920s.
Alexander Fleming
42
Drugs that inhibit folic acid synthesis
sulfonamides
43
competitively block paraaminobenzoic acid to prevent the synthesis of folic acid in susceptible bacteria that synthesize their own folates for the production of RNA and DNA
sulfonamides
44
were developed as semisyntheticantibiotics based on the structure of a common soil mold.
Tetracycline
45
Contains 4 rings
Tetracycline
46
Their absorption is affected of tetracycline is affected by
food, calcium, iron and drugs
47
* the group of bacteria that contain the pathogens that cause tuberculosis and leprosy are classified on the basis of their ability to hold a stain even in the presence of a “destaining” agent such as acid. Because of this property, they are called “acidfast” bacteria.
mycobacteria
48
Was first introduced in 2004
ketolides
49
block protein synthesis within susceptible bacteria, leading to cell death
ketolides
50
similar to the macrolides but are more toxic
lincosamides
51
First introduced in 2010 * televancin
lypoglycopeptide
52
They inhibit bacterial cell wall synthesis by interfering with the polymerization and crosslinking of peptidoglycans. They bind to the bacterial membrane and disrupt the membrane barrier function causing bacterial cell death
lipogylcopeptide
53
are antibiotics that interfere with protein synthesis in susceptible bacteria * erythromycin, azithromycin, clarithromycin, dirithromycin
macrolides
54
Prophylaxis for endocarditis before dental procedures in high-risk patients with valvular heart disease who are allergic to penicillin
macrolides
55
Available as an IV drug only
lipoglycopeptide
56
treating complicated skin and skin-structure infections caused by susceptible gram-positive bacteria, including methicillin-resistant strains of S. aureus. It must be given IV over 30 minutes, once each day for 7 to 14 days, which makes its use inconvenient.
Daptomycin
57
It is approved to treat C. difficile diarrhea and to prevent recurrence. It is given orally twice a day
Fidaxomycin
58
This drug is indicated specifically for treatment of infections caused by vancomycin-resistant and methicillin-resistant strains of bacteria.
Linezolid
59
It is approved for use in the treatment of complicated skin and skinstructure infections and intra-abdominal infections caused by susceptible bacteria
Tigecycline
60
Affects the E. coli bacteria, which cause traveler’s diarrhea. It is also approved for treating hepatic encephalopathy
Rifaximin
61