T1: CEPHALOSPORINS & TETRACYCLINES Flashcards
First discovered in seawater-fungus called cephalosporium acremonium
CEPHALOSPORINS
Are bactericidal and act by attaching to penicillin binding proteins to inhibit bacterial cell wall synthesis
CEPHALOSPORINS
Have a beta lactam ring that is mostly responsible for their antimicrobial activity.
CEPHALOSPORINS
The primary therapeutic use as a class is for gram negative infection and the clients who can’t tolerate the less expensive penicillin
CEPHALOSPORINS
Effective against gram positive and Gram negative bacteria and resistant to beta lactamase (an enzyme that acts against the beta lactam structure of penicillin)
CEPHALOSPORINS
Cause bacteria cell lysis and bacterial cell dies.
CEPHALOSPORINS
Most effective against gram positive bacteria (streptococci, and most staphylococci).
Effective against most gram-negative bacteria (E. Coli, species of Klebsiella, Proteus, Salmonella and Shigella)
FIRST GENERATION CEPHALOSPORINS
Therapeutic Indication: respiratory tract (strep pneumonia) otitis media and skin infection
FIRST GENERATION CEPHALOSPORINS
Cephalexin (Keflex)
FIRST GEN. CEPHALOSPORINS
Cefazolin sodium (Ancef, kefzol)
FIRST GEN. CEPHALOSPORINS
Cefadroxil (duricef)
FIRST GEN. CEPHALOSPORINS
Cephapirin (cefadyl)
FIRST GEN. CEPHALOSPORINS
- More potent, more resistant to beta lactamase, and exhibit a broader spectrum against gram negative organisms (Haemophilus influenzae, Neisseria gonorrhea, Neisseria meningitidis and several anaerobic organisms) than the first-generation drugs.
- Less effective against Gram-positive bacteria
SECOND GENERATION CEPHALOSPORINS
Cefaclor (ceclor)
SECOND GEN. CEPHALOSPORINS
Cefuroxime (ceftin, kefurox, zinacef)
SECOND GEN. CEPHALOSPORINS
Cefmetazole (Zefazone).
SECOND GEN. CEPHALOSPORINS
Have a longer duration of action than 2nd generation agents
THIRD GENERATION CEPHALOSPORINS
Broader spectrum against gram negative organisms, and are resistant to beta lactamase.
THIRD GENERATION CEPHALOSPORINS
Sometimes the drug of choice against infection by pseudomonas, klebsiella, neisseria, proteus, and haemophilus influenza.
THIRD GENERATION CEPHALOSPORINS
Less effective against gram positive bacteria.
THIRD GENERATION CEPHALOSPORINS
Cefixime (suprax)
3RD GEN. CEPHALOSPORINS
Cefdinir (Omnicef)
3RD GEN. CEPHALOSPORINS
Ceftriaxone (rocephin)
3RD GEN. CEPHALOSPORINS
Cefotaxime (claforan)
3RD GEN. CEPHALOSPORINS