Penicillins

Question 1

Natural Penicillins

Answer 1

Include various penicillin G preparations and penicillin V potassium.

Question 2

Natural Penicillin uses

Answer 2

(1) Gram-positive organisms (streptococci, Enterococcus
faecalis, and Listeria monocytogenes). (2) anaerobic species (Bacteroides and Fusobacterium). (3) By parenteral can be used to treat some gram-negative bacteria (E coli, H. influenzae, Neisseria gonorrhoeae, & Treponema pallidum)

Question 3

The Aminopenicillins

Answer 3

ampicillin and amoxicillin

Question 4

The Aminopenicillins uses

Answer 4

gram-positive organisms, plus improved coverage of selected gram-negative bacilli, (Enterobacteriaceae). Uses: sinusitis/bronchitis, susceptible urinary tract infection

Question 5

Amoxicillin

Answer 5

500mg q 8h or 875 q 12h for 5-7 days (UTI)

Question 6

Amoxicillin-clavulanate

Answer 6

500-875 q 8-12 hours for 5-7 days (UTI)

Question 7

The Penicillinase-Resistant Penicillins

Answer 7

Nafcillin and oxacillin, which are parenteral formulations. Dicloxacillin, which is given orally

Question 8

Dicloxacillin

Answer 8

500mg q 6 hours for 10-14 days (Mastitis)

Question 9

The Penicillinase-Resistant Penicillins uses

Answer 9

useful against
penicillin-resistant (methicillin-sensitive) Staphylococcus species

Question 10

The Antipseudomonal Penicillins

Answer 10

ticarcillin and piperacillin

Question 11

The Antipseudomonal Penicillins use

Answer 11

gram-positive bacteria, but they also have more activity against gram-negative bacteria, including Pseudomonas aeruginosa. Additional gram-negative species that are treated by these agents include H.
influenzae, Serratia species, and Klebsiella species