MIDTERMS_Immune System Flashcards
other term for antibiotics
ANTIMICROBIALS
what are substances that inhibit the growth of bacteria or kill it and other microorganisms?
Antibacterials and antimicrobials
2 actions of antibiotics
inhibit the growth of bacteria
kill it and other microorganisms
bacteriostatic
inhibit the growth of bacteria
bactericidal
kill it and other microorganisms
what are single cell prokaryotes lacking a true nucleus and nucleus membrane which has a rigid cell wall?
Bacteria
give 5 MECHANISMS OF ACTION for antibiotics
- Inhibition of bacterial cell wall synthesis
- lead to thinning of cell wall
- cytoplasm osmotically unstable
- bacterialysis
what causes resistance in antibiotics
prior exposure to the antibacterial
give example of bacterial resitance
Staphylococcus aureus was once sensitive to penicillin G; previous exposures have caused this organism to become resistant to it.
give example of natural resistance without previous exposure to drug
the gram negative (non-gram-staining) bacterium Pseudomonas aeruginosa is resistant to penicillin G.
take antibiotic as prescribed. why?
otherwise bacteria and body becomes resistant
and will need higher dose
give 3 general adverse reactions of antibiotics
Allergic reactions
Super impose infection
Organ toxicity
adverse allergic reactions in antibiotics
rash pruritus
hives
anaphylaxis
adverse Organ toxicity in antibiotics
liver and kidney
what to do to avoid allergic reactions in antibiotic administration for IV>
NST
primarily effective against one type of organism
Narrow- spectrum antibiotics
act on specific types of bacteria
Narrow- spectrum antibiotics
broad-spectrum antibiotic examples
tetracycline and cephalosporins
frequently used to treat infections when the offending microorganism has not been identified by C & S.
Broad- spectrum
4 derivatives of Penicillin
Broad spectrum PCN (Aminopenicillins)
Penicillinase resistant PCN (Antistaphylococcal)
Extended Spectrum Penicillins (Antipseudomonal)
Beta – Lactamase Inhibitors
drug class of Amoxicillin
Broad spectrum PCN
drug class of Dicloxacillin
Penicillinase resistant PCN
Trade Names of Amoxicillin
Amoxil Amoclav
Trade Names of Dicloxacillin
Dynapen, Dycill
SIDE EFFECTS AND ADR of penicillin
Hypersensitivity, thrombophlebitis
Superinfection,electrolyte imbalance
other common GI disturbances
PRECAUTIONS AND C/I
nursing moms
with asthma
renal impairment
h/x of hypersensitivity to PCN and cephalosporin
assess for any type of allergy to PCN or cephalosporins
NURSING RESPONSIBILITIES
check labs liver fxn test, AST, ALT
NURSING RESPONSIBILITIES
C&S
NURSING RESPONSIBILITIES
S/S of superinfection, anal or genital discharge with long-term therapy
NURSING RESPONSIBILITIES
pag magadminister ng antibioitic ano una muna gagawin?
C& S
bakit mag C&S
para makita kung senstive or resistant ba antibitotic doon
Have epinephrine ready for severe reactions
NURSING RESPONSIBILITIES
Admin oral form on empty stomach with a full glass of water
NURSING RESPONSIBILITIES
should be taken with meals kahit na baba effectiveness
causes ulcerations, hypersensitvity
Avoid oral PCNs with milk, fruit juices, soft drinks
it reduces effectivity
If GI disturbances occur,
may give small frequent meals to ensure adequate nutrition
to avoid resistance what should be done?
Advise to take full course regardless if feeling better
from fungus named Cephalosporium acremonium
CEPHALOSPORINS
what are the Genrations of Cephalosporins
First Generation
second generations
third Generation
effective against gram + bacteria and some gram – bacteria
First Generation
examples of ram + bacteria and some gram – bacteria
Proteus, E. coli, Klebsiella
2nd generation generic names
cefaclor
cefuroxime
effective against gram + bacteria and some gram – bacteria
First Generation
examples of ram + bacteria and some gram – bacteria
Proteus, E. coli, Klebsiella
example of 1st generation antibiotics
cephalexin
cefradine
1st generations antibiotics are effective against what bacteria?
H. inflluenzae, enterobacter Aerogenes, Neisseria
2nd generation generic names
cefaclor
cefuroxime
same as 1st and 2nd but less effective vs gram + more potent vs gram – bacteria
2nd generation
2nd generations antibioticsare effective against what bacteria?
pseudomonas a., serratia
example of 3rd generation antibiotics
cefotaxime
ceftazidime
ceftriaxone
still in dev’t ctive against gram – and + and P. aeroginosa
Fourth Gen
example of 4th generation antibiotics
cefipime
allergic to penicillin they are also allergic to?
cephalosphorin
M A C R O L I D E S examples
Azithromycin
Clarithromycin
Erythromycin
used to treat mild to moderate infxns of respi tract, sinuses, GI, skin and soft tissue, STD’S
M A C R O L I D E S
drug class Azithromycin
: antibacterial macrolide
trade names
ZITHROMAX
DOSAGE
A: PO : 250-500 mg/d
C: PO: 5-10mg/kg/d
IV: 500mg/d
1st broad spectrum antibiotic effective against gram + and – bacteria and other organisms (e.g. mycobacteria, rickettsiae, spirochetes, chlamydiae)
T E T R A C Y C L I N E S
acne treatment
tetracyclines
inhibit bacterial protein synthesis and bacteriostatic also used for severe acne vulgaris
tetracyclines
Doxycycline
antibacterial tetracycline
nursing responsibility for tetracycline
instruct to store out of light and extreme heat
teratogenic effect
cautioned for pregnant women
teratogenic effect
cautioned for pregnant women
last antibiotic presecribed and in small amounts
AMINOGLYCOSIDES
examples of aminoglycosides
Gentamicin (Garamycin)
Amikacin (Amikin)
Neomycin (Mycifradin)
PRECAUTIONS AND C/I
known allergies to drug
hepatic and renal dysfunction
GUT infections
FLUOROQUINOLONES
FLUOROQUINOLONES
Ciprofloxacin (Cipro)
Norfloxacin (Noroxin)
Sulfasalazine (Azulfidine)
Cotrimoxazole (Septra, Bactrim)
SULFONAMIDES