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161 Cards in this Set

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MOA: all inhibit cell wall synthesis
Bactericidal (except enterococcus)
Time dependent killers
beta-lactams
Resistance of beta lactams (3)
1. beta-lactamase degradation
2. penicillin binding protein alteration (main site of action)
3. decreased penetration
Penicillin G (IV) and Penicillin VK (PO)
natural penicillins
Two natural penicillins
pen G and pen VK
this type of penicillins cover:
gram + (strep) and anaerobes above diaphragm
natural penicillins (pen G and pen VK)
This type of penicillin is the drug of choice for treating:
N meningitidis, syphilis
natural penicillins
Nafcillin and Oxacillin (IV), Dicloxacillin (PO)
penicillinase-resistant penicillins
Three penicillinase-resistant penicillins
Nafcillin, Oxacillin, Dicloxacillin
This type of penicillins cover:
gram + (strep, s. aureus- MSSA) and anaerobes above diaphragm
penicillinase-resistant penicillins
This type of penicillin is RAPIDLY BACTERICIDAL
penicillinase-resistant penicillin
Ampicillin (IV/PO) and Amoxicillin (PO)
aminopenicillins
Two aminopenicillins
ampicillin and amoxicillin
This type of penicillins covers:
gram + (strep, enterococcus faecalis), gram - (LIMITED-p. mirabilis, H. influenzae, Listeria) and anaerobes above diaphragm
aminopenicillins (ampicillin and amoxicillin)
This type of penicillin is the drug of choice for:
Listeria Monocytogenes (gram -)
aminopenicillins
Ticarcillin (IV) and Piperacillin (IV)
*aminopenicillin with increase gram - activity*
extended spectrum penicillins
Two extended spectrum penicillins
ticarcillin and piperacillin
This type of penicillin covers:
gram + (strep, enterococcus faecalis->piper only), gram - (EXTENDED-enterobacteriaceae, pseudomonas aeruginosa, H, influenzae) and anaerobes above and limited below diaphragm
extended spectrum penicillins (ticarcillin and piperacillin)
This type of penicillin is used primarily for treatment of severe infections
extended spectrum penicillins
these were developed to enhance activity against beta-lactamase producing organisms
beta-lactamase inhibitor combos
These inhibitor combos cover:
gram + (strep, MSSA, enterococcus), gram - (Excellent-enterobacteriaceae, h influenzae, moraxella, pseudomonas aeruginosa) and anaerobes above and below
**commonly used in polymicrobial infections!**
beta-lactamase inhibitor combos
Augmentin, Unasyn, Timentin, Zosyn
beta-lactamase inhibitor combos
Amoxicillin/Clavulanate, type of beta lactamase inhibitor combo?
augmentin (PO)
Ampicillin/sulhactam, type of beta lactamase inhibitor combo?
unasyn
Ticarcillin/clavulanate, type of beta-lactamase inhibitor combo?
timentin
piperacillin/tazobactam, type of beta-lactamase inhibitor combo?
zosyn
All penicillins cover what two things?
strep and mouth anaerobes
which penicillins cover gram + MSSA? (6)
1. amp/sulbactam combo (unasyn)
2. amox/clav combo (augmentin)
3. dicloxacillin (penicillinase-resistant penicillin)
4. oxicillin (same)
5. piperacillin (+/-, extended spec)
6. pip/tazo combo (zosyn)
Do any penicillins cover gram + MRSA?
NO
Which penicillins cover gram + E. faecalis? (6)
1. ampicillin (aminopen)
2. amp/sulbactam (combo)
3. amoxacillin (aminopen)
4. amox/clav (combo)
5. piperacillin (extended spec)
6. pip/tazo (combo, zosyn)
3 first generation cephalosporins (beta-lactams)
1. cefadroxil
2. cephalexin
3. cefazolin (IV)
5 second generation cephalosporins (beta lactams)
1. cefaclor
2. cefprozil
3. cefuroxime
4. cefotetan (anaerobe activity)
5. cefoxitin (anaerobe activity)
6 third generation cephalosporins (beta lactams)
1. cefdinir
2. cefixime
3. cefpodoxime
4. ceftazidime (antipseudomonal activity)
5. cefotaxime
6. ceftriaxone
1 fourth generation cephalosporin (beta lactam)
cefepime (antipseudomonal activity)
1 advanced cephalosporin
ceftaroline fosamil (MRSA activity)
Two cephalosporins with antipseudomonal activity?
ceftazidime (3rd) and cefepime (4th)
Two cephalosporins with anaerobe activity?
cefotetan and cefoxitin (2nd both)
Only cephalosporin with possible MRSA activity...
ceftaroline
Skin infections
SPEcK organisms
Coverage of these cephalosporins:
gram + (strep, MSSA), gram - (Proteus spp, E. Coli, Klebsiella spp) and anaerobes above diaphragm
first generation cephalosporins
cefadroxil, cephalexin, cefazolin
Lower resp. tract infxns or surgical site prophylaxis
HMN-SPEcK organisms
Coverage of these cephalosporins:
gram +(strep, MSSA), gram - (Proteus, E. Coli, Klebsiella, H. influenzae, M. catarrhalis, N. gonorrhoeae
second generation cephalosporins
cefaclor, cefprozil, cefuroxime, cefotetan, cefoxitin
Lower resp. tract infxns or serioius infxns
Strong inducers of beta-lactamase production
Coverage of these cephs:
gram + (strep, MSSA), gram - (enterobacteriaceae, H influenzae, M catarrhalis, N gonorrhoeae, P aerugiosa (ceftazidime), lyme (ceftriaxone) and anaerobes above diaphragm (b. fragilis-cefotetan, cefoxitin)
third generation cephalosporins
cefdinir, cefixime, cefpodoxime, ceftibuten, ceftazidime, cefotaxime, ceftriaxone
Treatment of serious nosocomial infxns
Increase stability against beta-lactamase hydrolysis
Coverage of these cephs:
gram + (strep, MSSA), gram - (increased activity against enterobacteriaceae, p aeurginosa) and anaerobes above diaphragm
fourth generation cephalosporins
cefepime
Recently FDA approved in fall 2010 for complicated skin soft tissue infxns and community acquired pneumonia
ceftaroline fosamil (advanced gen. cephalosporin)
Prodrug undergoes rapid dephosphorylation
Coverage of this ceph:
gram + (strep, MSSA, MRSA), gram - (similar to ceftraixone), anaerobes above diaphragm
**NO activity against nonlactose fermenters
advanced gen. cephalosporins
ceftaroline fosamil
ALL cephalosporins (beta lactams) have activity against which two gram negative bacteria?
e. coli and klebsiella
Only cephalosporin with MRSA activity?
ceftaroline fosamil (advanced gen)
All cephalosporins EXCEPT this one cover MSSA and strep, gram positive bacteria?
cefepime (4th gen)
Which two first generation cephs DON'T cover h. influenzae and all others do?
cefazolin and cephalexin
Which two cephalosporins cover p. aeruginosa?
ceftazidime (3rd) and cefepime (4th)
Which is the only cephalosporin to cover B. fragilis anaerobe?
cefoxitin (2nd)
Four carbapenems
ertapenem, imipenem, meropenem, doripenem
These beta lactams have broadest spectrum of antimicrobial activity
Use reserved for sever life threatening polymicrobial infxns due to multidrug resistant organisms
carbapenems
erta/imi/mero/doripenem
What is the administration route for carbapenems?
parenteral admin only
Coverage of this type of beta lactams:
gram + (strep, MSSA, E. faecalis), gram - (excellent-enterobacteriaceae, nonfermenting GNRs-p aeruginosa-except ertapenem) and anaerobes both above and below
carbapenems
This type of beta lactam has NO cross reactivity with penicillins and cephalosporins
Only parenteral admin and inhalation
Coverage:
gram + (NONE), gram - (most, enterobacteriaceae, non fermenting GNRs-p aeruginosa), anaerobes (NONE)
monobactams
azetreonam
Name only monobactam
aztreonam
Two common adverse effects with beta lactams
allergic reactions (rash, fever) and gastrointestinal problems (GI upset-NVD, clostridium difficile colitis)
Which beta lactam can be used in penicillin allergic patients due to no cross reactivity
aztreonam (monobactam)
These antibiotics were developed in response to growing resistance
fluoroquinolones
cipro/moxi/levofloxacin
MOA: nucleic acid synthesis inhibitors
inhibit bacterial topoisomerases nexessary for DNA synthesis
DNA Gyrase (gram -)
topoisomerase IV (gram +)
fluoroquinolones
cipro, moxi, levo
What type of activity do fluoroquinolones have
concentration dependent bactericidal activity
2 resistance methods of fluoroquinolones
1. target site mutations
2. efflux pumps
Spectrum of activity:
gram + (strep, MSSA) Moxi>levo>>cipro
gram - (enterobacteriaceae, h influenzae, m catarrhalis, neisseria, p aeruginosa (cipro and levo) cipro=levo>moxi
anaerobes (minimal)
atypical (respiratory pathogens)
fluoroquinolones
moxi, cipro, levo
which fluoroquinolones are best for strep and MSSA gram positives?
levo and moxi.. cipro is less effctive
All fluoroquinolones cover which three gram negative bacteria
e coli, klebsiella, h influenzae
cipro and levo cover p aeruginosa
atypicals covered by fluoroquinolones? 3
legionella, c. pneumoniae, m. pneumoniae
fluoroquinolone adverse effects profile inclues what major cardiac risk and what black box warning
cardiac= torsades de pointes
black box=articular damage, tendon ruptures
divalent and trivalent cations decrease absorption
QT prolonging agents increase AEs risk
corticosteroids increase tendon rupture risk
Drug interactions for fluoroquinolones
MOA: 50S ribosome protein synthesis inhibitor
macrolide
what type of activity do macrolides have
time dependent bacteriostatic activity
2 resistance methods for macrolides
target site mutations and efflux pumps
Coverage of these protein synthesis inhibitors:
gram + (strep, MSSA, s pneumonia -emerging resistance)
gram - (minimal, h influenzae, m catarrhalis)
anaerobes- mouth only
atypicals (legionella, chlamydia, mycoplasma)
others (helicobactor pylori (clarithro), mycobacterium avium complex MAC
macrolides spec of activity
GI: NVD, ab pain/cramps
erythro>>clarithro>azithro
Cardiac: QT prolongation, ventric, tachycardia, same as above
Increase transaminases
Ototoxicity
Allergic rxns
adverse effects for macrolides
eryth/clarith/azithromycin
Three macrolides
erythro, clarithro, azithromycin
Erythro>> clarithro are STRONG INHIBITORS of which cytochrome p450 system
3A4--decreased substrate clearance
Coverage of these protein synthesis inhibitors:
gram + (strep, MSSA, s pneumonia -emerging resistance)
gram - (minimal, h influenzae, m catarrhalis)
anaerobes- mouth only
atypicals (legionella, chlamydia, mycoplasma)
others (helicobactor pylori (clarithro), mycobacterium avium complex MAC
macrolides spec of activity
GI: NVD, ab pain/cramps
erythro>>clarithro>azithro
Cardiac: QT prolongation, ventric, tachycardia, same as above
Increase transaminases
Ototoxicity
Allergic rxns
adverse effects for macrolides
eryth/clarith/azithromycin
Three macrolides
erythro, clarithro, azithromycin
Erythro>> clarithro are STRONG INHIBITORS of which cytochrome p450 system
3A4--decreased substrate clearance
MOA:
30S ribosome protein synthesis inhibitor
Time dependent bacteriostatic activity
tetracycline
Name the three tetracyclines
doxy/tetra/minocycline
Type of activity do tetracyclines have
time dependent bacteriostatic
Isolates resistant/intermediate to tetracycline may be susceptible to
doxy/minocycline
Resistance methods for tetracyclines
target site mutations and efflux pumps
Spectrum of activity of these:
gram + (strep, MSSA and MRSA, mino>doxy)
gram - (minimal, h influenzae and m catarrhalis
anaerobes mouth only
atypical (legionella, chlamydia, mycoplasma
others (helicobacter pylori-2nd line, borrelia burgdorgeri-lyme, propionibacterium acnes)
tetracyclines
mino/doxy/tetra
MOA:
30S ribosome protein synthesis inhibitor
Time dependent bacteriostatic activity
tetracycline
Name the three tetracyclines
doxy/tetra/minocycline
Type of activity do tetracyclines have
time dependent bacteriostatic
Isolates resistant/intermediate to tetracycline may be susceptible to
doxy/minocycline
Resistance methods for tetracyclines
target site mutations and efflux pumps
Spectrum of activity of these:
gram + (strep, MSSA and MRSA, mino>doxy)
gram - (minimal, h influenzae and m catarrhalis
anaerobes mouth only
atypical (legionella, chlamydia, mycoplasma
others (helicobacter pylori-2nd line, borrelia burgdorgeri-lyme, propionibacterium acnes)
tetracyclines
mino/doxy/tetra
major adverse effect of tetracycline
deforms and discolors teeth-avoid in kids < 8yo
this class of drugs interacts with anticonvulsants and penicillins as well as divalent and trivalent cations
tetracyclines
this tetracycline derivative has broad spectrum:
gram + (strep, MRRA, MRSA, enterococcus VRE)
gram - (broad-respiratory MOs, enterobacteriaceae, acinetobactor and stenotrophomonas)
anaerobes (above and below diaphragm)
atypicals (legionella, chlamydia, mycoplasma)
glycycline (tegecycline)
Adverse effects of this tetracycline derivative:
N/V, hyperbilirubinemia
glycycline (tigecycline)
MOA:
30S ribosomal protein synthesis inhibitors
aminoglycosides
What type of activity do aminoglycosides have
concentration dependent bactericidal activity
Resistance:
inactivation enzymes
decrease intracellular penetration
aminoglycosides
Name the three aminoglycosides
gentamicin, tobramycin, amikacin
This class of protein synthesis inhibitors is very HYDROPHILIC and distributes widely into body fluids (NOT CSF) and has dosing based on body weight
aminoglycosides
Spectrum of activity:
gram + (ONLY in combo with CELL WALL INHIBITOR-s. aureus and coagulase negative staph, viridans strep, enterococcus-gent/streptomycin)
gram - (majority-enterobacteriaceae, nonfermenting acinetobacter, p aeruginosa-amikacin>tobra>gent)
NO anaerobes
mycobacteria
aminoglycosides
major adverse effect of tetracycline
deforms and discolors teeth-avoid in kids < 8yo
this class of drugs interacts with anticonvulsants and penicillins as well as divalent and trivalent cations
tetracyclines
this tetracycline derivative has broad spectrum:
gram + (strep, MRRA, MRSA, enterococcus VRE)
gram - (broad-respiratory MOs, enterobacteriaceae, acinetobactor and stenotrophomonas)
anaerobes (above and below diaphragm)
atypicals (legionella, chlamydia, mycoplasma)
glycycline (tegecycline)
Adverse effects of this tetracycline derivative:
N/V, hyperbilirubinemia
glycycline (tigecycline)
MOA:
30S ribosomal protein synthesis inhibitors
aminoglycosides
What type of activity do aminoglycosides have
concentration dependent bactericidal activity
Resistance:
inactivation enzymes
decrease intracellular penetration
aminoglycosides
Name the three aminoglycosides
gentamicin, tobramycin, amikacin
This class of protein synthesis inhibitors is very HYDROPHILIC and distributes widely into body fluids (NOT CSF) and has dosing based on body weight
aminoglycosides
Spectrum of activity:
gram + (ONLY in combo with CELL WALL INHIBITOR-s. aureus and coagulase negative staph, viridans strep, enterococcus-gent/streptomycin)
gram - (majority-enterobacteriaceae, nonfermenting acinetobacter, p aeruginosa-amikacin>tobra>gent)
NO anaerobes
mycobacteria
aminoglycosides
Aminoglycosides only cover gram + bacteria when used in combination with
cell wall inhibitor (beta-lactam or glycopeptides)
which aminoglycoside is best for treating the majority of gram - bacteria?
amikacin>tobra>gent
Adverse effects profile of:
nephrotoxicity
ototoxicity (irreversible)-vestibular and cochlear/auditory
neuromuscular paralysis (RARE)
aminoglycosides
gram positive agents:
MOA: inhibits bacterial cell wall synthesis at final stage of peptidoglycan polymers (glycopeptide)
vancomycin
what type of activity does vancomycin have
time dependent bactericidal activity
Resistance:
modification of D-alanyl-D-analine binding site --> site of action
vancomycin
Spectrum of activity:
gram + (BROAD-staph MSSA, MRSA, s epidermidis, strep, enterococcus, corynebacterium, bacillus)
NO GRAM -
anaerobes (gram + ONLY, c. difficile)
vancomycin
How long are procurement files kept for your purchase card statement?
3 years
(SAP, 5-9)
gram positive agent
MOA:
inhibits bacterial protein synthesis by binding to bacterial 23S ribosomal RNA of the 50S subunit
(oxazolidinone)
linezolid
What type of activity does linezolid have
time dependent bacteriostatic activity EXCEPT FOR STREP-cidal
Resistance:
active against nearly all Abx resistant gram + bacteria
linezolid
This gram + agent should only be used if you KNOW you have multidrug resistance... NEVER as first line therapy, very potent and don't want to overuse
linezolid
Spectrum of activity: ONLY GRAM +
Gram + (broad-staph MSSA, MRSA, s. epidermidis, strep, enterococcus faecium & faecalis including VRE, corynebacterium)
NO Gram - and Anaerobes
Other: mycobacterium
linezolid
Adverse effects profile:
reversible bone marrow suppression
GI
HA/dizziness
optic neurtitis or peripheral neuropathy
linezolid
This gram + agent interacts with foods HIGH IN TYRAMINE: aged, fermented, pickled, smoked, cheese, pepperoni, soy sauce, red wines and beer
linezolid
Serotonin syndrome is possible when this drug is used in tyramine rich foods or serotonergic medications (SSRIs, MAOIs)
linezolid
gram + agents
MOA:
binds to bacterial membrane and causes rapid depolarization of the membrane potential, inhibiting synthesis of protein, DNA and RNA
(protein synthesis inhibitor as well as nucleic acid synthesis inhibitor)
daptomycin
this gram + agent is very expensive... weight based dosing
daptomycin
This gram + agent is INEFFECTIVE for pneumonia, used primarily for complicated skin infections, bacteremia
daptomycin
Resistance: RARE
membrane alterations and decreased binding
daptomycin
This gram + agent has poor absorption and low distribution, no CSF penetration and poor bone penetration
daptomycin
Spectrum of activity: GRAM + ONLY
Gram + (broad= staph MSSA, MRSA, s. epidermidis, strep, enterococcus faecium and faecalis VRE, corynbacterium)
NO Gram - or anaerobes
daptomycin
Adverse effects: usually well tolerated
Myopathy and increase creatine phosphokinase
daptomycin
gram + agents
MOA: sequential inhibition of folinic acid synthesis-->necessary for microbial DNA production
1. inhibits dihydropteroate synthase
2. inhibits dihydrofolate reductase
(metabolic inhibitor)
trimethoprim/sulfamethoxazole TMP/SMX
Individually these gram + agents are _______ but in combination they are ________
static, cidal
Resistance:
point mutations in target enzymes (dihydrofoliate reductase and dihydropteroate synthase
TMP/SMX
Absorption: rapid and complete
Distribution: wide
Metabolism and Elimination:
1. extensive liver metab
2. some liver metab
TMP/SMX
Spectrum of activity:
Gram + (staph MSSA, MRSA, S. saprophyticus, strep, nocardia, listeria)
Gram - (most enterobacteriacae, STENOTROPHOMONAS MALTOPHILIA-drug of choice!!!)
Anaerobes- mouth only
Others: Pneumocystis carinii (PCP)
TMP/SMX
Drug of choice for Stenotrophomonas maltophilia
TMP/SMX
Adverse effects:
GI: NV
Hematologic: bone marrow supp.
Hypersensitivity: rash, fever
Hyperkalemia: high doses
Neurologic: HA, ataxia, tremors
Renal: pseudo increas Scr
TMP/SMX
Name the gram positive agents: (4)
1. vancomycin
2. linezolid
3. daptomycin
4. TMP/SMX
anti-anaerobic agents
MOA:
inhibits ribosomal protein synthesis (lincosamine)
clindamycin
Alternative to penicillin allergic patients for strep and staph infections
clindamycin
What type of activity does clindamycin have
variable bacteriostatic or bactericidal activity
Spectrum of activity:
Gram + (MSSA and some MRSA, strep)
NO GRAM -
Anaerobes-mouth and limited b. fragilis
clindamycin
Resistance:
ribosomal mutations
binds in close proximity to macrolides, confers resistance to both
clindamycin
Absorption: rapid and complete
Distribution: high concentrations in body fluids and bones, NOT CSF
Metabolism and elimination: liver, excreted in feces and bile
clindamycin
Adverse effects profile:
DIARRHEA-c. difficile colitis
clindamycin
anti-anaerobic agents
MOA:
interacts with DNA causing strand breakage via ferrozid and ultimately inhibition of nucleic acid synthesis
(fluoroquinolone)
metronidazole (fluoroquinolone0
What type of activity does metronidazole have
concentration dependent bactericidal activity
Resistance in metronidazole?
uncommon
Absorption: rapid and complete
Distribution: widely-saliva, bile, seminal fluid, bone, liver, good CSF penetration
Metabolism and elimination: liver, kid excretes most unchanged
metronidazole (fluoroquinolone)
Spectrum of activity:
Gram + and - anaerobes:
bacteroides, fusobacterium, prevotella, peptostretococcus, clostridium
H pylori
Anaerobic protozoa:
trichomonas vaginalis, giardia, gardnerella vaginalis
metronidazole
Drug of choice for c. difficile colitis (clostridium)
metronidazole (fluoroquinolone)
Adverse effects profile;
GI: metalic taste
dark urine
CNS: HA, insomnia
neuromuscular: peripheral neuropathy
Disulfiram like reaction: NO CONCURRENT ALCOHOL FOR AT LEAST 48 HOURS POST TREATMENT
metronidazole
which anti-anaerobic has a disulfiram-like reaction when used with alcohol?
metronidazole
DDIs:
warfarin-increase anticoag effect
alcohol and lopi/ritonavir liquid-disulfiram rxn
phenytoin-increases [phenytoin]
lithium- increase [lithium]
barbs and rifampin-decrease this drug
metronidazole
11 drugs that cover p. aurginosa
1. aminoglycosides (gent, tobra, amikacin)
2/3. cipro/levofloxacin (fluoroquinolones besides moxi)
4/5. ceftazidime, cefepime (3rd and 4th gen cephs)
6/7. piperacillin, ticarcillin (extended spec penicillins)
8. aztreonam (monobactam)
9/10/11. imipenem, meropenem, doripenem (carbapenems besides ertapenem)
8 drugs that cover MRSA
1. Ceftaroline (advanced ceph)
2. Vancomycin (gram + agent, glycopeptide)
3. Linezolid (Oxazolidinone)
4. Daptomycin (lipopeptide)
5. Tigecycline (tetracycline)
6. Tetracyclines-mino>>doxy
7. Clindamycin (lincosamide)
8. TMP/SMX (sulfonamide)
General therapeutic monitoring includes which 5 areas:
fever, WBC, symptomatic improvement, renal function, drug levels
Goal [trough] of vancomycin
10-20 mcg/ml