A 12-year-old child requires oral antibiotic therapy for Streptococcal infection. The drug should have same spectrum as Penicillin G but more acid-resistant. Which antibiotic fits this description?

A 45-year-old patient has a mixed infection of Gram-positive and Gram-negative bacteria. The physician prescribes a broad-spectrum, acid-stable penicillin. Which drug is appropriate?

A hospitalized patient has Pseudomonas aeruginosa infection. The antibiotic selected is a penicillin that is highly active against Pseudomonas. Which antibiotic should be administered?

A patient presents with Staphylococcus aureus infection that produces β-lactamase (penicillinase). Which antibiotic would be most effective?

Which first-generation cephalosporin is most effective primarily against Gram-positive bacteria?

A physician treats Gram-negative abdominal infection involving anaerobes. The drug belongs to second-generation cephalosporins. Which drug is indicated?

A young patient with meningitis needs a drug that crosses the blood–brain barrier and is third-generation cephalosporin. Which antibiotic is the best choice?

A patient with Pseudomonas septicemia requires a fourth-generation cephalosporin with excellent broad Gram-positive and Gram-negative coverage. Which drug is preferred?

A critically ill patient has a multidrug-resistant Enterococcus and Staphylococcus infection. The doctor selects the last-resort drug that binds to D-Ala-D-Ala and blocks peptidoglycan cross-linking. Which antibiotic is this?