Micro-background I Flashcards
Common resistant pathogens
Kill Each And Every Strong Pathogen
Klebsiella pneumoniae (ESBL, CRE)
Escherichia coli (ESBL, CRE)
Acinetobacter baumannii
Enterococcus faecalis, enterococcus faecium (VRE)
Staphylococcus aureus (MRSA)
Pseudomonas aeruginosa
Penicillin V Potassium
tablet and suspension
- Penicillin (natural penicillin)
Penicillin G Aqueous
pfizerpen- injection
- Penicillin (natural penicillin)
Penicillin G Benzathine
Bicillin L-A
-not for IV use, can cause cardio-respiratory arrest and death
- Penicillin (natural penicillin)
Penicillin G Benzathine + penicillin G procaine
Bicillin C-R
- Penicillin (natural penicillin)
Dicloxacillin
Capsule
- Penicillin (antistaphylococcal penicillin)
- antistaphyloccal:
— preferred for MSSA soft tissue, bone and joint, endocarditis and bloodstream infections
— and no renal dose adjustment
Nafcillin
injection
- nafcillin is vesicant- admin through centeral line- if extravasation occurs, use cold packs and hyaluronidase injection
- Penicillin (antistaphylococcal penicillin)
Oxacillin
injection
- Penicillin (antistaphylococcal penicillin)
Amoxicillin
tablet, capsule, chewable!, suspension
- Penicillin (aminopenicillins penicillin)
amoxicillin/clavulanate
Augmentin, Augmentin ES 600
-tablet, chewable!, suspension
- use 14:1 ration to decrease diarrhea caused by clavulanate
- Penicillin (aminopenicillins penicillin)
Ampicillin
injection!, capsule, suspension
- ampicillin PO is rarely used due to poor bioavailability (only preferred when switching to PO from IV ampicillin)
- Penicillin (aminopenicillins penicillin)
Ampicillin/sulbactam
Unasyn- injection
- IV ampicillin and ampicillin/sulbactam must be diluted in NS only
- Penicillin (aminopenicillins penicillin)
Piperacillin/tazobactam
zosyn- injection
-contains 65mg NA per 1 gram of piperacillin
- 0.375grams/3grams of piper/tazo respectively, dosing…
- Penicillin (Extended- Spectrum penicillin)
cefazolin
IV/IM 1-2 grams q8h
- 1st generation cephalosporins
cephalexin
keflex PO
- 1st generation cephalosporins
cefadroxil
PO 1-2 gram q12-24h
- 1st generation cephalosporins
cefuroxime
Zinacef
PO/IV/IM
- 2nd generation cephalosporins
cefotetan
cefotan- IV/IM
- contains side chain- can increase risk of bleed and disulfiram-like reaction with alcohol
- 2nd generation cephalosporins
cefaclor
- 2nd generation cephalosporins
cefoxitin
- 2nd generation cephalosporins
cefprozil
- 2nd generation cephalosporins
cefdinir
omnicef, PO
- 3rd generation cephalosporins
ceftriaxone
Rocephin
- IV/IM
- avoid in neonates, causes hyperbilirubinemic
- avoid use with calcium-containing IV products in neonates <28 days old, forms insoluble precipitates
- no renal dose adjustment, CNS penetration at high dose
- 3rd generation cephalosporins
cefotaxime
IV/IM
- neonates better…
- 3rd generation cephalosporins
cefditoren
PO
- 3rd generation cephalosporins
cefixime
suprax
available chewable tablets!
PO
- 3rd generation cephalosporins
cefpodoxime
PO
- 3rd generation cephalosporins
ceftibuten
PO- on empty stomach 400mg daily
- 3rd generation cephalosporins
ceftazidime
Fortaz, tazicef
IV/IM
- 3rd generation cephalosporins
Cefepime
IV/IM
- 4th generation cephalosporins
ceftaroline fosamil
Teflaro
IV
- 5th generation cephalosporins
ceftazidime/avibactam
avycaz
IV
activity against some carbapenem-resistant enterobacteriaceae (CRE)
- cephalosporin combinations
ceftolozane/tazobactam
Zerbaxa
- cephalosporin combinations
cefiderocol
fetroja
IV
- siderophore cephalosporin
Doripenem
Injection IV
- carbapenems
Imipenem/cilastatin
primaxin I.V.
- carbapenems
Imipenem/cilastatin/relebactam
Recarbrio
Injection IV
- carbapenems
Meropenem
IV 500-1,000 mg q8h
- carbapenems
meropenem/ vaborbactam
vabomere
injection IV, 4 grams q8h, each dose infused over 3 hours
- carbapenems
ertapenem
Invanz
- stable in NS only
- no coverage of pseudomonas, acinetobacter, or enterococcus
- carbapenems
Aztreonam
azactam
cayston- inhaled for cystic fibrosis
IV
CrCl <30 dose adjusment requred
- aztreonam
- avoid in penicillin allergy
gentamicin
IV, IM, Ophthalmic topical
- aminoglycosides
tobramycin
IV, IM, ophthalmic, inhaled
tobramycin inhalation for CF (Tobi, Tobi Podhaler, Bethkis, Kitabis Pak)
- aminoglycosides
Amikacin
IV, IM
- aminoglycosides
Streptomycin
IM
- aminoglycosides
Plazomicin
Zemdril
IV
for complicated UTI only
- aminoglycosides
Ciprofloxacin
Cipro, Cilaxan eye drops, cetraxal, and Otiprio ear drops
tablet, suspension, injection, ointment, ophtalmic, otic
- quinolones
ciprofloxacin + dexamethasone
ciprodex
- quinolones
ciprofloxacin + fluocinolone
Otovel
- quinolones
ciprofloxacin + hydrocortisone
Cipro HC
- quinolones
levofloxacin
levaquin
tablet, solution, injection, ophthalmic
- quinolones
moxifloxacin
Avelox, Moxeza, and Vegamox eye drops
tablet, injection, ophtalmic
- quinolones
Delafloxacin
Baxdela
tablet, injection
- quinolones
Gatifloxacin
Zymaxid eye drops
- quinolones
Gemifloxacin
tablets
- quinolones
Ofloxacin
Ocuflox eye drops
tablet, ophthalmic, otic
- quinolones
Azithromycin
Zithromax, Z-Pak, Zithromax Tri-Pak, AzaSite eye drops
tablet, suspension, injection, ophthalmic
better gram negative activity than erythromycin
can be used for traveler’s diarrhea
- macrolides
Clarithromycin
tablet, ER tablet, suspension
better gram -positive activity
- macrolides
erythromycin
E.E.S, Ery-tab, Erythrocin, EryPed, Ery and Erygel topical
E.E.S= erythromycin ethylsuccinate
- macrolides
Doxycycline
Vibramycin, Doryx, Oracea, Acticlate, others
- no renal dose required
- tetracyclines
Minocycline
Minocin, Solodyn, CoreMino, Minolira, Ximino
- associated with drug induced lupus
- tetracyclines
Eravacycline
Xerava
injection
- tetracyclines
Omadacycline
Nuzyra
tablet, injection
- tetracyclines
Sarecycline
Seysara
tablet
- tetracyclines
Tetracycline
capsule
- tetracycline
Sulfamethoxazole/Trimethoprim
Bactrim, Bactrim DS, Sulfatrim Pediatric
- single strength 400/80
- double strength 800/160
all product 5:1 ratio
- avoided in pt with G6PD deficiency
- suolfonamides
Vancomycin
Vancocin, Firvanq oral solution
first line for moderate to severe MRSA
if MIC >=2 consider alternative
telavancin
vibativ
approved for SSTI (soft tissue infections, hospital acquired and ventilator associated pneumonia
- Lipoglycopeptides
Oritavancin
Orbactive
approved for SSTI (soft tissue infections)
- Lipoglycopeptides
Dalbavancin
Dalvance
approved for SSTI (soft tissue infections
- Lipoglycopeptides
Daptomycin
cubicin and cubicin RF
do not use to tx pneumonia (inactivated in the lungs by surfactants)
- daptomycin - cyclic lipopeptide
Linezolid
zyvox
is a MAO inhibitor
- oxazolidinones
tedizolid
sivextro
is a MOA inhibitor
- oxazolidinones
quinupristin/ dalofpristin
synercid
injection
dilute in D5W only
Tigecyclin
tygacil
injection
derivative of minocycline
boxed warning- increased risk of death, use only when alternative tx are not suitable
Colistimethate
Coly-Mycin M
- Polymyxins
Polymyxin B
injection
prodrug- hydrolyzed to colistin
1mg=10,000units of polymyxin B
- Polymyxins
Chloramphenicol
injection
rarely used due to adverse effects
Clindamycin
Cleocin
injection, capsule, suspension
topical formulation: Cleocin-T, clindagel, clindacin ETZ, clindacin Pac, Clindacin- P, evoclin,
foam, gel, lotion, kit, solution, swab
clindesse, cleocin
vaginal cream and suppository
common uses: purulent and non-purulent skin infections, beta-lactam alternative for dental abscess, surgery prophylaxis and infective endocarditis prophylaxis
-lincosamide antibiotic
Metronidazole
Flagyl
tablet capsule, injection
topical: MetroCream, Merolotion, Metrogel, Noritate, Rosadan
Vaginal: Nuvessa, Vandazole
- metronidazole and related drugs
Tinidazole
tablet
like metronidazole, alcohol should not be used with or after 3 days of med d/c due to disulfiram-like reaction
- metronidazole and related drugs
Secnidazole
solosec
granule packet
approved only for bacterial vaginosis
- metronidazole and related drugs
lefamulin
xenlata
tablet, injection
- first in class pleuromutilin, inhibits bacterial protein synthesis
fidaxomicin
dificid
tablet, suspension
used for C. difficile infection
-inhibits RNA polymerase
rifaximin
xifaxan
think of traveler’s diarrhea
- DNA/RNA inhibitor
- not effective for systemic infections
of label use for c. diff (second recurrence)
tx- hepatic encephalopathy
- inhibits bacterial RNA synthesis
fosfomycin
monurol
- inhibits bacterial wall synthesis by inactivating the enzyme pyruval transferase.
- packet granules- 3mg per packet
Nitrofurantoin
macrobid, macrodantin
capsule and suspension
- uncomplicated UTI
- avoid crcl <60ml/min
SE= brown urine discoloration
macroBID= given BID
- bacterial cell wall inhibitor
mupirocin
bactroban
- topical decolonization
Methylcillin- sensitive staphylococcus aureus (MSSA)
**- Dicloxacillin, nafcillin, oxacillin
- Cefazolin, cephalexin (and other 1st and 2nd generation cephalosporins) **
- Amoxicillin/clavulanate, ampicillin/sulbactam
- doxycycline, minocyclin
- SMX/TMP
Community- associated methicillin-resistant staphylococcus aureus (CA-MRSA) skin & soft tissue infection (SSTIs)
- SMX/TMP
- Doxycycline, minocycline
- clindamycin
- linezolid
Severe SSTIs requiring IV treatment or hospitalization (cover MRSA and Streptococci)
- Vanco (if MIC>=2 consider alternative
- Linezolid, tedizolid
- daptomycin
- ceftaroline
- telavancin
- oritavancin
- dalbavancin
- quinupristin/dalfopristin
- tigecyclin
Nosocomial MRSA
- Vanco (if MIC>=2 consider alternative
- linezolid
- daptomycin (not in pneumonia)
- telavancin
VRE (E. faecalis)
- Pen G or ampicillin
- Linezolid
- Daptomycin
- Tigecycline
- Cystitis only: nitrofurantoin, Fosfomycin, doxycycline
Acineobacter baummanni
**- carbapenems (except ertapenem)
**- ampicillin/sulbactam
- minocycline
- tigecycline
- quinolones
- SMX/TMP
- amikacin
- colistimethate, polymyxin B
VRE (E. Faecium)
- Daptomycin
- Linezolid
- Quinupristin/Dalfopristin
- Tigecycline
- Cystitis only: nitrofurantoin, fosfomycin, doxycycline
Extended-spectrum beta-lactamase producing gram-negative rods (ESBL GNR) - E.coli, K.pneumoniae, P. mirabills
- carbapenems
- ceftazidime/avibactam
- ceftolozane/tazobactam
- aminoglycosides
- cystitis only: fosfomycin
HPNEK
**- beta-lactam/beta-lactamase inhibitor
**- Amoxicillin (if beta-lactamase negative)
- Cephalosporins (except 1st generation)
- Carbapenems
- SMX/TMP
- aminoglycosides
- Quinolones
Carbapenem-resistant gram-negative rods (CRE)
- ceftazidime/avibactam
- colistimethate, polymyxin B
- Meropenem/vaborbactam
- Imipenem/cilastatin/ relebactam
Atypical organisms
- azithromycin, clarithromycin
- doxycycline, minocycline
- quinolones
Bacteroides fragilis
- metronidazole
- beta-lactam/beta-lactamase inhibitor
- cefotetan, cefoxitin
- carbapenems
- tigecycline
- other (reduced activity): moxifloxacin
C. Diff
**- oral vanco
- fidaxomicin **
- metronidazole
Pseudomonas aeruginosa
- Piperacillin/tazobactam
- Cefepime
- Ceftazidime
- Ceftazidime/avibactam
- ceftolozane/tazobactam
- carbapenems (except ertapenem)
- cipro, levo
- aztreonam
- aminoglycosides
- colistimethate, polymyxin B
Refrigeration after reconstitution required
**Penicillin VK
Ampicillin, Amoxicillin/Clavulanate, **
Cephalexin,
Cefadroxil,
Cefpodoxime,
Cefprozil,
Cefuroxime,
Cefaclor,
Ceftibuten,
Vanco Oral,
Valganciclovir
Refrigeration recommended
amoxicillin- improves taste
Do not refrigerate
cefdinir,
azithro,
clarithromycin (bitter taste, thickens/gels),
doxycycline,
cipro,
levofloaxcin,
clindamycin (thickens, may crystallize),
Linezolid
sulfamethoxazole/trimethprim
acyclovir
fluconazole
pasoconazole
virconazole
nystatin
storage requirements: IV antibiotics
do not refrigerate
metronidazole
moxifloxacin
sulfamethoxazole/trimethoprim
acyclovir- (refrigeration causes crystallization)
Take with/without food
most antibiotics can be taken with food to decrease GI upset
except: take on empty stomach-
- ampicillin oral capsules and suspension
- ceftibuten suspension
- levofloxacin oral solution
- penicillin VK
- rifampin
- isoniazid
- itraconazole solution
- voriconazole
take within one hour of finishing meal- amoxicillin ER
IV to oral 1:1
levofloxacin, moxifloxacin
doxycycline, minocycline
linezolid, tedizolid
metronidazole
sulfamethoxazole/trimethoprim
fluconazole, isavuconazonium, posaconazole, voriconazole
light protection during admin
doxycycline
micafungin
pentamidine
compatible with dextrose only
diluent compatibility
quinopristine/dalfopristin
sulfamethoxazole/trimethoprim
amphotericine b
dalbavancin, oritavancin
pentamidine
compatible with saline only
diluent compatibility
ampicillin
ampicillin/sulbactam
ertapenem
daptomycin (cubicin RF)
compatible with NS/LR only
diluent compatibility
caspofungin
daptomycin (cubicin)
what are atypical organisms
chlamydia ssp, legionella spp., mycoplasma pneumoniae, mycobacterium tuberculosis
tetracyclines and quinolones have in common
avoid multivitamins- separated for divalent cations
Escherichia coli- pyelonephritis
most common cause of pyelonephritis
healthy pt. empiric therapy while waiting on culture results go for
- fluoroquinolone (cipro or levo) for 5-7 days or
- SMX/TMP for 7-10 days
empiric tx for accute cystitis, most likely pathogen is E. Coli
bactrim, nitrofurantoin, or fosfomycin
if bactrim was used 2 months ago, avoid reuse…
prophylaxis of Pneumoncystis Pneumonia
SMX/TMP!
kissing virus
epstein-barr virus
prego and HIV
zidovudine to prevent HIV transmission to infant
- NRTI
interfere with coagulation assays
dapto, ortivancin, telavancin
no renal dose adjustment
antistaphylococcal penicillins
ceftriaxone
clinda
doxy
macrolides (only azithro and erythromycin
metronidazole
moxifloxacin
linezolid
key features of nitrofurantoin
- review prego use
- avoid in renal <60 ml/min
- MacroBID= BID
- macrodantin= QID
- counseling: take with food to avoid nausea and cramping
- can discolor urine to brown
bactrim and warfarin
INR increases, use alternative when possible
key features of tetracycline
doxy and minocycline- CA- MRSA skin infections and acne
doxy= 1st line tx for lyme disease and rocky mt spotted fever, CAP, COPD exacerbations, VRE UTI, chlamydia
Do not use in prego, breastfeeding or children <8 years old
key features of macrolides
all macro: CAP, and alternative to beta-lactam for strep throat
clarithromycin and erythromycin are strong cyp 3A4 inhibitors, lova and simva are contraindicated