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161 Cards in this Set
- Front
- Back
MOA: all inhibit cell wall synthesis
Bactericidal (except enterococcus) Time dependent killers |
beta-lactams
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Resistance of beta lactams (3)
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1. beta-lactamase degradation
2. penicillin binding protein alteration (main site of action) 3. decreased penetration |
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Penicillin G (IV) and Penicillin VK (PO)
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natural penicillins
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Two natural penicillins
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pen G and pen VK
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this type of penicillins cover:
gram + (strep) and anaerobes above diaphragm |
natural penicillins (pen G and pen VK)
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This type of penicillin is the drug of choice for treating:
N meningitidis, syphilis |
natural penicillins
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Nafcillin and Oxacillin (IV), Dicloxacillin (PO)
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penicillinase-resistant penicillins
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Three penicillinase-resistant penicillins
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Nafcillin, Oxacillin, Dicloxacillin
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This type of penicillins cover:
gram + (strep, s. aureus- MSSA) and anaerobes above diaphragm |
penicillinase-resistant penicillins
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This type of penicillin is RAPIDLY BACTERICIDAL
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penicillinase-resistant penicillin
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Ampicillin (IV/PO) and Amoxicillin (PO)
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aminopenicillins
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Two aminopenicillins
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ampicillin and amoxicillin
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This type of penicillins covers:
gram + (strep, enterococcus faecalis), gram - (LIMITED-p. mirabilis, H. influenzae, Listeria) and anaerobes above diaphragm |
aminopenicillins (ampicillin and amoxicillin)
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This type of penicillin is the drug of choice for:
Listeria Monocytogenes (gram -) |
aminopenicillins
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Ticarcillin (IV) and Piperacillin (IV)
*aminopenicillin with increase gram - activity* |
extended spectrum penicillins
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Two extended spectrum penicillins
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ticarcillin and piperacillin
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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)
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This type of penicillin is used primarily for treatment of severe infections
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extended spectrum penicillins
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these were developed to enhance activity against beta-lactamase producing organisms
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beta-lactamase inhibitor combos
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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
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Augmentin, Unasyn, Timentin, Zosyn
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beta-lactamase inhibitor combos
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Amoxicillin/Clavulanate, type of beta lactamase inhibitor combo?
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augmentin (PO)
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Ampicillin/sulhactam, type of beta lactamase inhibitor combo?
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unasyn
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Ticarcillin/clavulanate, type of beta-lactamase inhibitor combo?
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timentin
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piperacillin/tazobactam, type of beta-lactamase inhibitor combo?
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zosyn
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All penicillins cover what two things?
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strep and mouth anaerobes
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which penicillins cover gram + MSSA? (6)
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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) |
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Do any penicillins cover gram + MRSA?
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NO
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Which penicillins cover gram + E. faecalis? (6)
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1. ampicillin (aminopen)
2. amp/sulbactam (combo) 3. amoxacillin (aminopen) 4. amox/clav (combo) 5. piperacillin (extended spec) 6. pip/tazo (combo, zosyn) |
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3 first generation cephalosporins (beta-lactams)
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1. cefadroxil
2. cephalexin 3. cefazolin (IV) |
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5 second generation cephalosporins (beta lactams)
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1. cefaclor
2. cefprozil 3. cefuroxime 4. cefotetan (anaerobe activity) 5. cefoxitin (anaerobe activity) |
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6 third generation cephalosporins (beta lactams)
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1. cefdinir
2. cefixime 3. cefpodoxime 4. ceftazidime (antipseudomonal activity) 5. cefotaxime 6. ceftriaxone |
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1 fourth generation cephalosporin (beta lactam)
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cefepime (antipseudomonal activity)
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1 advanced cephalosporin
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ceftaroline fosamil (MRSA activity)
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Two cephalosporins with antipseudomonal activity?
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ceftazidime (3rd) and cefepime (4th)
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Two cephalosporins with anaerobe activity?
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cefotetan and cefoxitin (2nd both)
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Only cephalosporin with possible MRSA activity...
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ceftaroline
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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 |
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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 |
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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 |
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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 |
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Recently FDA approved in fall 2010 for complicated skin soft tissue infxns and community acquired pneumonia
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ceftaroline fosamil (advanced gen. cephalosporin)
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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 |
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ALL cephalosporins (beta lactams) have activity against which two gram negative bacteria?
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e. coli and klebsiella
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Only cephalosporin with MRSA activity?
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ceftaroline fosamil (advanced gen)
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All cephalosporins EXCEPT this one cover MSSA and strep, gram positive bacteria?
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cefepime (4th gen)
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Which two first generation cephs DON'T cover h. influenzae and all others do?
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cefazolin and cephalexin
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Which two cephalosporins cover p. aeruginosa?
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ceftazidime (3rd) and cefepime (4th)
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Which is the only cephalosporin to cover B. fragilis anaerobe?
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cefoxitin (2nd)
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Four carbapenems
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ertapenem, imipenem, meropenem, doripenem
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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 |
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What is the administration route for carbapenems?
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parenteral admin only
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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
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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 |
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Name only monobactam
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aztreonam
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Two common adverse effects with beta lactams
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allergic reactions (rash, fever) and gastrointestinal problems (GI upset-NVD, clostridium difficile colitis)
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Which beta lactam can be used in penicillin allergic patients due to no cross reactivity
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aztreonam (monobactam)
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These antibiotics were developed in response to growing resistance
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fluoroquinolones
cipro/moxi/levofloxacin |
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MOA: nucleic acid synthesis inhibitors
inhibit bacterial topoisomerases nexessary for DNA synthesis DNA Gyrase (gram -) topoisomerase IV (gram +) |
fluoroquinolones
cipro, moxi, levo |
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What type of activity do fluoroquinolones have
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concentration dependent bactericidal activity
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2 resistance methods of fluoroquinolones
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1. target site mutations
2. efflux pumps |
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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 |
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which fluoroquinolones are best for strep and MSSA gram positives?
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levo and moxi.. cipro is less effctive
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All fluoroquinolones cover which three gram negative bacteria
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e coli, klebsiella, h influenzae
cipro and levo cover p aeruginosa |
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atypicals covered by fluoroquinolones? 3
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legionella, c. pneumoniae, m. pneumoniae
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fluoroquinolone adverse effects profile inclues what major cardiac risk and what black box warning
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cardiac= torsades de pointes
black box=articular damage, tendon ruptures |
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divalent and trivalent cations decrease absorption
QT prolonging agents increase AEs risk corticosteroids increase tendon rupture risk |
Drug interactions for fluoroquinolones
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MOA: 50S ribosome protein synthesis inhibitor
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macrolide
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what type of activity do macrolides have
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time dependent bacteriostatic activity
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2 resistance methods for macrolides
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target site mutations and efflux pumps
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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
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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 |
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Three macrolides
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erythro, clarithro, azithromycin
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Erythro>> clarithro are STRONG INHIBITORS of which cytochrome p450 system
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3A4--decreased substrate clearance
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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
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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 |
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Three macrolides
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erythro, clarithro, azithromycin
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Erythro>> clarithro are STRONG INHIBITORS of which cytochrome p450 system
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3A4--decreased substrate clearance
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MOA:
30S ribosome protein synthesis inhibitor Time dependent bacteriostatic activity |
tetracycline
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Name the three tetracyclines
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doxy/tetra/minocycline
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Type of activity do tetracyclines have
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time dependent bacteriostatic
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Isolates resistant/intermediate to tetracycline may be susceptible to
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doxy/minocycline
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Resistance methods for tetracyclines
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target site mutations and efflux pumps
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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 |
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MOA:
30S ribosome protein synthesis inhibitor Time dependent bacteriostatic activity |
tetracycline
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Name the three tetracyclines
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doxy/tetra/minocycline
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Type of activity do tetracyclines have
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time dependent bacteriostatic
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Isolates resistant/intermediate to tetracycline may be susceptible to
|
doxy/minocycline
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Resistance methods for tetracyclines
|
target site mutations and efflux pumps
|
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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
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this class of drugs interacts with anticonvulsants and penicillins as well as divalent and trivalent cations
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tetracyclines
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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)
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Adverse effects of this tetracycline derivative:
N/V, hyperbilirubinemia |
glycycline (tigecycline)
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MOA:
30S ribosomal protein synthesis inhibitors |
aminoglycosides
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What type of activity do aminoglycosides have
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concentration dependent bactericidal activity
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Resistance:
inactivation enzymes decrease intracellular penetration |
aminoglycosides
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Name the three aminoglycosides
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gentamicin, tobramycin, amikacin
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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
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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
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major adverse effect of tetracycline
|
deforms and discolors teeth-avoid in kids < 8yo
|
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this class of drugs interacts with anticonvulsants and penicillins as well as divalent and trivalent cations
|
tetracyclines
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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)
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Adverse effects of this tetracycline derivative:
N/V, hyperbilirubinemia |
glycycline (tigecycline)
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MOA:
30S ribosomal protein synthesis inhibitors |
aminoglycosides
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What type of activity do aminoglycosides have
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concentration dependent bactericidal activity
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Resistance:
inactivation enzymes decrease intracellular penetration |
aminoglycosides
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Name the three aminoglycosides
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gentamicin, tobramycin, amikacin
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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
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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
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Aminoglycosides only cover gram + bacteria when used in combination with
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cell wall inhibitor (beta-lactam or glycopeptides)
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which aminoglycoside is best for treating the majority of gram - bacteria?
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amikacin>tobra>gent
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Adverse effects profile of:
nephrotoxicity ototoxicity (irreversible)-vestibular and cochlear/auditory neuromuscular paralysis (RARE) |
aminoglycosides
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gram positive agents:
MOA: inhibits bacterial cell wall synthesis at final stage of peptidoglycan polymers (glycopeptide) |
vancomycin
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what type of activity does vancomycin have
|
time dependent bactericidal activity
|
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Resistance:
modification of D-alanyl-D-analine binding site --> site of action |
vancomycin
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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
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What type of activity does linezolid have
|
time dependent bacteriostatic activity EXCEPT FOR STREP-cidal
|
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Resistance:
active against nearly all Abx resistant gram + bacteria |
linezolid
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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
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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
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Adverse effects profile:
reversible bone marrow suppression GI HA/dizziness optic neurtitis or peripheral neuropathy |
linezolid
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This gram + agent interacts with foods HIGH IN TYRAMINE: aged, fermented, pickled, smoked, cheese, pepperoni, soy sauce, red wines and beer
|
linezolid
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Serotonin syndrome is possible when this drug is used in tyramine rich foods or serotonergic medications (SSRIs, MAOIs)
|
linezolid
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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
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this gram + agent is very expensive... weight based dosing
|
daptomycin
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This gram + agent is INEFFECTIVE for pneumonia, used primarily for complicated skin infections, bacteremia
|
daptomycin
|
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Resistance: RARE
membrane alterations and decreased binding |
daptomycin
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This gram + agent has poor absorption and low distribution, no CSF penetration and poor bone penetration
|
daptomycin
|
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Spectrum of activity: GRAM + ONLY
Gram + (broad= staph MSSA, MRSA, s. epidermidis, strep, enterococcus faecium and faecalis VRE, corynbacterium) NO Gram - or anaerobes |
daptomycin
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Adverse effects: usually well tolerated
Myopathy and increase creatine phosphokinase |
daptomycin
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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
|
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Individually these gram + agents are _______ but in combination they are ________
|
static, cidal
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Resistance:
point mutations in target enzymes (dihydrofoliate reductase and dihydropteroate synthase |
TMP/SMX
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Absorption: rapid and complete
Distribution: wide Metabolism and Elimination: 1. extensive liver metab 2. some liver metab |
TMP/SMX
|
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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
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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
|
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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
|
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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
|
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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
|
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11 drugs that cover p. aurginosa
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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:
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fever, WBC, symptomatic improvement, renal function, drug levels
|
|
Goal [trough] of vancomycin
|
10-20 mcg/ml
|