• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/56

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

56 Cards in this Set

  • Front
  • Back
Chemotherapy
Treatment of systemic infections with specific drugs that selectively suppress the infecting microorganism without significantly affecting the recipient
Cell Wall Antimicrobials (3)
Beta lactam drugs,
Vancomycin,
Bacitracin
Nucleic Acid Synthesis Antimicrobials (2)
Flouroquinolones
Rifamycins
Metabolic Pathways Antimicrobials (3)
Sulfonamide
Trimethoprim
Pyrimethamine
Protein Synthesis Antimicrobials (7)
Aminoglycosides
Tetracyclines
Macrolides
Chloramphenicol
Lincosamides
Oxazolidinones
Streptogramins
Beta lactam drugs (4)
Penicillin
Cephalosporin
Carbapenems
monobactam
What does penicillin bind to?
Transpeptidase/penicillin binding proteins
What does transpeptidase/penicillin binding proteins do?
Cross-links peptidoglycan chains to form rigid cell wall
What happens when penicillin binds to the PBP's?
Loss of cell rigidity and cell death (bactericidal)
Penicillin is particularly effective against which bacteria?
Gram positive bacteria with thick cell walls
MRSA and penicillin resistant pneumococci utilize what mechanism of resistance?
alteration of penicillin binding proteins
Staphylococci has what major mechanism of resistance?
Penicillinase/Beta lactamase to break beta lactam ring in penicillin
Which gram-negative bacteria has reduced permeability of the cell membrane as a mechanism of resistance?
Pseudomonas
Narrow spectrum penicillinase susceptible antimicrobials?
Penicillin G (parenteral) Penicillin V (oral)
Which bacteria are susceptible to Narrow spectrum penicillinase susceptible antimicrobials?
Streptococci
Pneumococci
Meningicocci
Treponum pallidum (syphillis)
Which bacteria are susceptible to Narrow spectrum penicillinase resistant antimicrobials?
Staph, except MRSA
Narrow spectrum penicillinase resistant antimicrobials?
Oxacillin
Methicillin
Naficillin
Broad spectrum penicillinase susceptible antimicrobials?
Amoxicillin
Ampicillin
Which bacteria are susceptible to Broad spectrum penicillinase susceptible antimicrobials?
Gram (+) cocci
Listeria monocytogenes
H. pylori
H. influenza
Extended spectrum or antipseudomonal penicillinase susceptible antimicrobials?
Ticarcillin
Piperacillin
Azlocillin
Bacteria susceptible to antipseudomonal penicillinase susceptible antimicrobials?
Pseudomonas aeruginosa
Gram (-) rods
What is administration of Penicillin G and why?
I.M/I.V. due to acid lability
How is Penicillin G + Procaine and Benzathine helpful in meningicocci infections?
Only penetrate CSF to a significant extent during inflammation
How is Penicillin disposed of in the body?
Activce tubular excretion
What inhibits the elimination of Penicillin, how, and what effects does it have on Penicillin?
Probenicid inhibits Penicillin by competition of the carrier and causes increased concentration of Penicillin as well as prolonging the activity of Penicillin
What are the uses of Penicillin G (3) ?
Streptococci, Meningococci, Gram (+) bacilli infections
What is the DOC for Treponema pallidum?
Penicillin G
What bacteria are resistant to Penicillin G (3) ?
Staph aureus, Neisseria gonorrhea, some strains of Pneumococci
Which drugs inhibit beta lactamases?
Methicillin
Oxacillin
Naficillin
Beta lactamase inhibitors are used for which bacterial infection?
Staph infections
MRSA MRSE?
Methicillin Resistant Staph Aureus and Methicillin Resistant Staph Epidermides
Patient with peptic ulcers goes in for dental surgery. Two years ago had prosthetic valves put into heart. Patient is at risk for? DOC?
Patient is at risk for endocarditis. Should use Amoxicillin prophylactically before surgery as well as to treat H.pylori infection (ulcers).
Ampicillin and Amoxicillin can have broader spectrums by using in conjunction with which drugs (2) ?
Clavulonic Acid
Sulbactam
What drug has a synergistic affect against enterococcal and pseudomonal infections?
Aminoglycosides in addition to the Piperacillin or Ticarcillin will have a synergistic affect.
Prophylactic treatment of rheumatic fever?
Benzathine Penicillin
Prophylactic treatment of gonorrhea and syphillis?
Procaine- or Benzathine- Penicillin
Amoxicillin or ampicillin is indicated for prophylaxis in what conditions?
cyanotic heart disease, previous diagnosis of endocarditis, prosthetic heart valves before undergoing genitourinary/GI/respiratory/dental procedures
Why do beta lactamase inhibitors widen the spectrum of antimicrobials?
Because they are potent and irreversible beta lactamase inhibitors and do not have antibacterial properties.
Uses of beta lactamase inhibitors?
staph, H. influenza, N. gonorrhea, E.coli, Proteus
Fixed dose beta lactamase inhibtors + penicillins (3)
Amoxicillin/Ticarcillin + clavulonic acid
Ampicillin + Sulbactam
Piperacillin + Tazobactum
Maculopapular rash, diarrhea, pseudomembranous enterocolitis
Adverse effect of Ampicillin
Interstitial nephritis
Adverse effect of Methicillin
Urticarial skin rashes, acute anaphylaxis, cross-hypersensitivity
Adverse effect of penicillins
First generation Cephalosporins (2) ?
Cefazolin (parenteral)
Cephalexin (oral)
Uses of first generation cephalosporins (2) ?
Klebsiella pneumonia
Surgical prophylaxis (cefazolin)
Spectrum of First generation Cephalosporins (2) ?
Klebsiella pneumoniae
Gram (+) cocci
Second generation Cephalosporins (5)?
Cefoxitin
Cefotetan
Cefaclor
Cefamandole
Cefuroxime
Second generation Cephalosporins enter CSF (1) ?
Cefuroxime
Spectrum of Second generation Cephalosporins (1) ?
Gram (-) bacteria
Second generation Cephalosporins for Bacteroids fragilis (2)?
Cefoxitin
Cefotetan
Second generation Cephalosporins for H.influenza?
Cefuroxime
Cefachlor
Cefamandole
Third generation Cephalosporins (5) ?
Cefotaxime
Ceftriaxone(IM)
Ceftazidime
Cefoperazone
Cefixime (oral)
Third generation Cephalosporins properties (2) ?
Increased activity against Gram (-) bacteria.
Good penetration into BBB (except Cefoperazone & Cefixime)
Third generation Cephalosporins for Pseudomonas (2)?
Cefoperazone
Ceftazidime
Third generation Cephalosporins for gonorrhea (2)?
Ceftriaxone (parenteral) & Cefixime (oral)
Third generation Cephalosporins for S. typhi (2)?
Cefriaxone, cefaperazone