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37 Cards in this Set
- Front
- Back
what factors exist between patient and bug that help determine selection process (3)
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1. immune status
2. site of infection 3. age |
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what factors exist between bug and drug that help determine selection process (4)
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1. susceptibility
2. site of infection 3. protein binding 4. pH |
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what factors exist between drug and patient that help determine selection process (5)
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1. immune status
2. pharmacokenetics 3. toxicity 4. organ function 5. pharmacodynamics |
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nonspecific signs of infection (3)
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1. ESR (erythrocyte sedimentation rate)
2. CRP (c-reactive protein) 3. LFTs |
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what substances are gram stains performed on (4)
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1. sputum
2. urine 3. CSF 4. wound specimens |
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large cell wall and stains purple
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gram +
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thin cell wall and stains red
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gram -
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gram + cocci (4)
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1. staphylococci
2. streptococci 3. enterococci 4. listeria |
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gram + cocci in clusters =
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staphylococcus
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gram + cocci in pairs and chains =
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streptococcus or enterococcus
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gram - bacilli (7)
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1. escherichia coli (e. coli)
2. klebsiella spp 3. enterobacter spp 4. serratia marcescens 5. proteus spp 6. pseudomonas aeruginosa 7. haemophilus influenzae |
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gram - cocci (2)
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1. moraxella catarrhalis
2. neisseria spp |
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non gram staining bacteria (6)
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1. chlamydia spp
2. mycoplasma pneumoniae 3. legionella spp 4. mycobacteria 5. rickettsiae 6. spirochetes |
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non gram staining viral organisms (3)
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1. influenza A and B
2. hepatitis viruses 3. cytomegaloviruses |
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gram + anaerobes (4)
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1. peptostreptococcus
2. peptococcus 3. propionibacterium acnes 4. clostridium spp generally found in mouth and upper GI |
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gram - anareobes (2)
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1. bacteroides fragilis
2. prevotella generally found in lower GI tract |
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AFB (acid fast bacilli) test for?
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mycobacteria
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india ink tests for?
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cryptococcus
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potassium hydroxide tests for?
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fungal pathogens
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lowest concentration of an agent that inhibits the visible growth of an organism in vitro
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MIC
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lowest concentration of an agent which results in 99.9% reduction in colony forming units
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MBC
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what is the breakpoint value based on? (3)
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1. drug pharmacokinetics
2. distribution of MICs 3. clinical efficacy |
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drugs identified in Childs Pugh Classification (2)
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1. capsofungin
2. tigecycline **be aware of liver toxicity |
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which trimester are sulfonamides not used?
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last (3rd trimester)
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agents that exhibit concentration-dependent killing (5)
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1. aminglycosides (gentamicin, tobramycin)
2. fluoroquinolones (cipro, ofloxacin) 3. metronidazole 4. amphoteracin B 5. daptomycin |
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agents that exhibit non-concentration dependent killing (5)
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1. beta lactams (penicillins and cephalosporins
2. glycopeptides (vancomycin) 3. clindamycin 4. macrolides (erythromycin) 5. fluconazole |
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AUC:MIC = _____ for gram - organisms
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>125:1
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AUC:MIC = ____ for gram + organisms
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30-40+
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what is the desired trough for vancomycin (concentration independent)
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15 mcg/ml but may be up to 20 mcg/ml in endocarditis, meningitis
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beta-lactamase inhibitors (3)
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1. clavulanate
2. tazobactam 3. sulbactam |
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problem pathogens (ESKAPE)
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1. enterococci faecium (VRE)
2. staphylococcus aureus (MRSA) 3. klebsiella spp (ESBL and carbapenemase-hydrolyzing b-lactamases) 4. acinetobacter baumanni 5. pseudomonas aeruginosa 6. enterobacter species |
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options for treatment of VRE (vancomycin resistant enterococci) (4)
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1. linezolid (Zyvox)
2. daptomycin (cubicin) 3. quinopristin/dalfopristin (synercid) 4. tigecycline (tygacil) |
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hospital acquired MRSA are resistant to? (6)
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1. penicillins
2. cephalosporins 3. quinolones 4. tetracycline 5. clindamycin 6. macrolides |
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treatment of choice for hospital acquired MRSA (1)
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vancomycin
alternatives: linezolid, quinopristin/dalfopristin, daptomycin, tigecycline, telavancin, ceftaroline |
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CA-MRSA more likely to be susceptible to non-beta lactams such as? (6)
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1. ciprofloxacin
2. clindamycin 3. tetracycline (not in children <8) 4. gentamicin 5. rifampin (not used alone) 6. bactrim |
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organisms that produce ESBLs are especially resistant to? (1)
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1. ceftazidime
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currently ESBL producing organisms can be treated with?
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carbapenems (imipenem, meropenem, doripenem)
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