NUR2407 / NUR 2407 Exam 2 (Latest): Pharmacology -
Rasmussen
Goal of Antibacterial Drugs .....ANSWER.....Kill bacteria or stop
reproduction without harming the patient.
Spectrum of Antibacterial Drugs .....ANSWER.....Spectrum ≠
'stronger'; match drug to bug (use culture & sensitivity).
Intended Response of Antibacterial Drugs
.....ANSWER.....Disappearance of s/s of infection (fever ↓, WBC
normalizing, drainage ↓).
Common Side Effects of Antibacterial Drugs
.....ANSWER.....Diarrhea, thrush/vaginal yeast.
Adverse Effects of Antibacterial Drugs
.....ANSWER.....Allergy/anaphylaxis; C. difficile risk.
Cell Wall Synthesis Inhibitors .....ANSWER.....Bactericidal agents
that inhibit bacterial cell wall synthesis.
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Penicillins .....ANSWER.....Example: amoxicillin.
Cephalosporins .....ANSWER.....Examples: cefazolin, cephalexin.
Monobactams .....ANSWER.....Example: aztreonam.
Carbapenems .....ANSWER.....Example: imipenem/cilastatin.
Glycopeptide .....ANSWER.....Example: vancomycin.
Allergy Risk with Cell Wall Inhibitors .....ANSWER.....Allergy ↑
(cross-sensitivity: penicillin ↔ cephalosporins).
Adverse Effects of Vancomycin .....ANSWER.....N/V, fever/chills,
'red man syndrome,' hearing ↓, kidney function ↓; CNS changes,
nephrotoxicity.
Administration of Vancomycin .....ANSWER.....Give vancomycin
SLOWLY.
Teaching for Cephalosporins .....ANSWER.....Cephalosporins ≥1
hr before or ≥4 hr after iron/antacids.
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Pediatric Considerations for Antibacterial Drugs
.....ANSWER.....Reserve stronger agents for serious infections.
Pregnancy/Breastfeeding Considerations
.....ANSWER.....Penicillins/most cephalosporins low risk;
carbapenems/monobactams/vanco low-to-moderate; all may be
excreted in milk.
Older Adults Considerations
.....ANSWER.....Ototoxicity/nephrotoxicity more likely.
Aminoglycosides .....ANSWER.....Examples: amikacin, gentamicin,
streptomycin.
Common Side Effects of Aminoglycosides .....ANSWER.....N/V,
rash, fever, lethargy.
Adverse Effects of Aminoglycosides .....ANSWER.....OTO- &
NEPHRO-toxicity, neuromuscular blockade.
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Administration of Aminoglycosides .....ANSWER.....Baseline
breathing, labs, hearing must be checked before administration.
Tetracyclines .....ANSWER.....Antibiotics to avoid during
pregnancy and breastfeeding due to birth defect risk.
Macrolides .....ANSWER.....Most have a low risk of birth defects
and can pass into milk.
Oto-/nephrotoxicity .....ANSWER.....Increased risk in older adults
when using certain antibiotics.
Sulfonamides/Trimethoprim .....ANSWER.....Bacteriostatic agents
that also treat some non-bacterial infections (e.g., PJP).
Common side effects of Sulfonamides/Trimethoprim
.....ANSWER.....Headache, fever, skin rash, photosensitivity.
Adverse effects of Sulfonamides/Trimethoprim
.....ANSWER.....Bone marrow suppression (↓RBC/↓WBC/↓PLT),
Stevens-Johnson syndrome.