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Details

Oral Beta Lactams
oral penicillins and cephalosporins
15
Pharmacology
Professional
10/11/2011

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Cards

Term
What is acid stability?
Definition
drug can resist degradation by stomach acid
Term
What is absorption in relation to drugs?
Definition
how well a drug is taken up by the body
Term
penicillin V potassium (VK) spectrum of activity/what it is used to treat
Definition
narrow spectrum: Strep, Enterococcus faecalis, gram+ anaerobes, oral anaerobes
uses: Group A strep pharyngitis/tonsilitis, oral cavity infections
Term
penicillin VK dosage, dosage forms, and instructions to the patient
Definition
typically q6h
children 25-50mg/kg/day
adults: 125-500mg
adjustment necessary in renal impairment
tablet or suspension
take on empty stomach, poor taste
mild GI effects (N/V, diarrhea)
Term
dicloxacillin spectrum and uses
Definition
spectrum: MSSA, GAS, GBS
uses: cellulitis, mild infections, step-down from IV meds
not used very frequently
Term
dicloxacillin doses, forms, and patient instructions
Definition
q6h
children 25-50 mg/kg/d
adults 125-500mg
capsule or suspension
take on an empty stomach
mild GI side effects
Term
bacampicillin
Definition
unavailable in US
historical interest
prodrug of ampicillin which made it more stable
Term
amoxicillin spectrum of activity and uses
Definition
unavailable in US
Strep and Enterococcus, Salmonella, H. influenzae, E.coli, Proteus, Shigella (SHEPS)
uses: CAP, pharyngitis, otitis media, sinusitis, bronchitis, UTI, dental prophylaxis
very penicillinase susceptible
Term
amoxicillin dose, instructions to patient
Definition
bioavailability 80-90%
children: 25-50mg/kg/day or 80-90mg/kg/day divided q8h
adults:250-500mg q8h or 875mg q12h
capsule, tablet, chew tab, suspension
take without regard to food
less diarrhea than ampicillin
Term
amoxicillin extended released (ER)
Definition
775mg daily
three components (one immediate-release, two delayed-release)
administer within 1 hr of a meal
Term
amoxicillin/clavulonic acid (Augmentin)
Definition
beta-lactam/beta-lactamase inhibitor
spectrum: amoxicillin + MSSA, Klebsiella, M. catarrhalis, H. influenzae, E.coli, Bacteroides (anaerobe)
uses: best oral penicillin for upper respiratory infections, SSTI, UTI
take with food
higher liklihood of GI upset, diarrhea
Term
carbenicillin indanyl
Definition
PO
unavailable in US
historical interest
bioavailabiltiy 30-40%
UTIs only
Term
What are the first generation oral cephalosporins?
Definition
cephalexin
cefadroxil
Term
1st generation cephalosporin spectrum of activity and uses
Definition
spectrum: Strep, MSSA, PEcK (Proteus mirabilis, E.coli, Klebsiella), mostly gram+, a little gram-
uses:SSTI, Strep pharyngitis, URTI, uncomplicated UTI
Term
extended spectrum cephalosporin clinical uses
Definition
SSTI (skin and soft tissue infections)
UTI (mostly 3rd gen)
CAP (those w/ greater gram+ activity)
acute bronchitis
acute exacerbation of chronic bronchitis
pharyngitis
sinusitis
otitis media
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