UNIT 11: INTRO TO ANTIMICROBIALS Flashcards
Enumeration
Narrow-Spectrum Penicillins (2)
Penicillin G
Penicillin V
Enumeration
Antistaphylococcal penicillins (4)
Very-Narrow Spectrum
Cloxacillin, dicloxacillin
Nafcillin
Oxacillin
Methicillin
Isoxazolyl Penicillins
Enumeration
Extended-spectrum penicillins (3)
Wider-Spectrum
Aminopenicillins (Ampicillin, Amoxicillin)
Carboxypenicillins (Carbenicillin, Ticarcillin)
Ureidopenicillins (Piperacillin)
Enumeration
Aminopenicillins (2)
Ampicillin
Amoxicillin
Enumeration
Carboxypenicillins (2)
Carbenicillin
Ticarcillin
Piperacillin is what type of Penicillin?
Ureidopenicillins
First-generation cephalosporins (6)
Cefazolin
Cefadroxil
Cephalexin
Cephalothin
Cephapirin
Cephradine
Second-generation cephalosporins (9)
Cefaclor
Cefamandole
Cefonicid
Cefuroxime
Cefprozil
Loracarbef
Ceforanide
Cefotetan
Cefoxitin
Third-generation cephalosporins (12)
Cefoperazone
Cefotaxime
Ceftazidime
Ceftizoxime
Ceftriaxone
Cefixime
Cefpodoxime proxetil
Cefdinir
Cefditoren
Pivoxil
Ceftibuten
Moxalactam
Fourth-generation cephalosporins (1)
Cefepime
Cephalosporin–β-lactamase inhibitor combinations (2)
Effective against gram (-) infections
Ceftolozane-tazobactam
Ceftazidime-avibactam
Siderophore Cephalosporin
Cefiderocol
Cephalosporins Active Against Methicillin-Resistant Staphylococci (1)
Ceftaroline fosamil
Carbapenems (4)
Ertapenem
Imipenem
Meropenem
Doripenem (not available in USA)
Drugs with a monocyclic β-lactam ring
Monobactams
Enumeration
Glycopeptides (5)
Vancomycin
Teicoplanin
Telavancin
Dalbavancin
Oritavancin
DOT TV
The following are glycopeptides, EXCEPT:
Vancomycin
Teicoplanin
Telavancin
Daptomycin
Dalbavancin
Oritavancin
Daptomycin
Daptomycin is a lipopeptide
Drugs that inhibit the growth/replication, or kill microrganisms
Antimicrobials
Types of antimicrobials (5)
Antibacterial
Antifungal
Antiviral
Anti-protozoal
Anti-parasitic
First-line drug for syphillis
Benzathine Penicillin G
Penicillin G is the drug of choice for infections caused by:
Streptococci
Meningococci
Enterococci
Penicillin-susceptible pneumococci
Non-B-lactamase-producing staphylococci
Spirochetes (Treponema pallidum)
Actinomyces
Non-B-lactamase-producing Gram (-) anaerobic organisms
Oral form of penicillin, indicated only in minor infections due to poor bioavailability
Penicillin V
Most active of oral B-lactam antibiotics against pneumococci
Aminopenicillins (ampicillin & amoxicillin)
Given orally to treat:
Bacterial sinusitis
Otitis
Lower respiratory tract infections
Amoxicillin
Effective for shigellosis
Ampicillin
Ampicillin is effective against serious infections including: (5)
Anaerobes
Enterococci
L. monocytogenes
E. coli
Salmonella sp.
Ampicillin is not active against:
Klebsiella sp.
Enterobacter sp.
P. aeruginosa
Citrobacter sp.
Serratia marcescens
Indole-positive Proteus species
Gram (-) aerobes
Resistant agents of Penicillin G:
Penicillin-Resistant S. pneumoniae (PRSP) strains
S. aureus
N. gonorrhoeae
Used for oropharyngeal infections
Penicillin V
Developed to broaden spectrum of penicillins against gram (-) pathogens, including Pseudomonas aeruginosa
Carboxypenicillins (carbenicillin, tricarcillin)
Active against Gram (-) bacilli:
Klebsiella pneumoniae
Pseudomonas aeruginosa
Ureidopenicillin (piperacillin)
Available only as co-formulation with tazobactam
Ureidopenicillin (piperacillin)
Antipseudomonal B-lactams used in combination with Ureidopenicillin due to P. aeruginosa developing resistance (2)
Aminoglycoside
Fluoroquinolone
B-lactamase inhibitors used in combination with Ampicillin, Amoxicillin, Piperacillin, and Ticarcillin (3)
Clavulanic acid
Sulbactam
Tazobactam
B-lactamase inhibitors extends the activity of penicillins against:
B-lactamase-producing strains of S. aureus
B-lactamase-producing Gram-negative bacteria
Degradation products of penicillins and products of alkaline hydrolysis
Antigenic determinants
Penicilloic acid
Associated with neutropenia
Nafcillin
Causes hepatitis
Oxacillin
Causes interstitial nephritis
Methicillin
Associated with pseudomembranous otitis
Ampicillin
Associated with skin rashes
Ampicillin
Caused by large doses of oral penicillins
GI disturbances
Nausea, vomiting, diarrhea
When combined with vancomycin, associated with greater incidence of acute kidney injury
Piperacillin-tazobactam
Generation of Cephalosporins effective against:
Gram (+) cocci
E. coli
Klebsiella pneumoniae
Proteus mirabilis
Anaerobic cocci (peptococci, peptostreptococci)
1st Generation
1st Generation Cephalosporins are not effective against:
Gram (-) cocci
Enterococci
MRSA
Most gram (-) rods
Methicillin-resistant strains of staphylococci
Pseudomonas aeruginosa
Indole-positive Proteus species
Enterobacter sp.
Serratia marcescens
Citrobacter sp.
Acinetobacter sp.
Drug of choice for surgical prophylasxis
Cefazolin
1st Generation
Effective for serious staphylococcal infections such as bacteremia
Cefazolin
Suitable for urinary tract infections and staphylococcal or streptococcal infections, including cellulitis or soft tissue absess
Oral cephalosporins