NR568 Advanced Pharmacology for the Adult-Gerontology Primary Care Nurse
Practitioner: (Latest 2026/2027 Update) Midterm Exam Review | Q&A | Grade A | 100%
Correct (Verified Answers)
Subject: Advanced Pharmacology (NR568) - Adult-Gerontology Primary Care NP
Source: NR568 Midterm Exam Comprehensive Review - Latest 2026/2027 Blueprint
Format: Q&A Guide with Clinical Rationale | Evidence-Based Practice | Verified Accurate Solutions
Instructions: Each question includes the verified correct answer and a detailed clinical pharmacology rationale
covering antibiotic classes, antivirals, antifungals, anthelmintics, and specialized therapeutics.
1: What are the two main classification schemes for antimicrobial drugs?
Correct Answer: Classification by Susceptible Organism and Classification by Mechanism of Action.
1. Classification by susceptible organism includes antibacterial, antiviral, and antifungal drugs with varying spectra of activity.
2. Classification by mechanism of action includes cell wall synthesis inhibitors, protein synthesis inhibitors, DNA/RNA disruptors,
antimetabolites, and viral replication suppressors.
3. Understanding both schemes guides empiric therapy and targeted treatment based on pathogen and resistance patterns.
2: What does the acronym "Abx Can Terminate Protein Synthesis For Microbial Cells Like Germs" represent for
antibiotic classes?
Correct Answer: Aminoglycosides, Cephalosporins, Tetracyclines, Penicillins, Sulfonamides,
Fluoroquinolones, Macrolides, Carbapenems, Lincosamides, Glycopeptides.
1. This mnemonic helps recall the 10 major antibiotic classes for exam preparation.
2. Each class has unique mechanism, spectrum, and adverse effect profile.
3. Clinical application requires understanding which class treats specific pathogens and patient factors.
3: What is a beta-lactam antibiotic and what is its mechanism of action?
Correct Answer: Beta-lactams have a β-lactam ring in their structure (penicillins, cephalosporins,
carbapenems, aztreonam) and share the same mechanism of action: disruption of the bacterial cell wall;
they are bactericidal and require actively growing bacteria to work.
1. Beta-lactams inhibit penicillin-binding proteins (PBPs) which cross-link peptidoglycan strands in cell wall synthesis.
2. Cell wall disruption leads to osmotic lysis, particularly effective against gram-positive and some gram-negative bacteria.
3. Resistance occurs via beta-lactamase production, altered PBPs (MRSA), or efflux pumps.
4: Which antibiotic classes are bacteriostatic inhibitors of protein synthesis?
Correct Answer: Tetracycline, Macrolide, Clindamycin.
1. Bacteriostatic drugs inhibit bacterial growth without directly killing; host immune system clears infection.
2. Tetracyclines bind 30S ribosomal subunit; macrolides and clindamycin bind 50S subunit.
3. Not preferred in immunocompromised patients who need bactericidal activity.
5: Which antibiotic classes are bactericidal (directly kill bacteria)?
Correct Answer: Aminoglycosides, beta-lactams, fluoroquinolones, metronidazole, most
antimycobacterial agents, streptogramins, vancomycin.
1. Bactericidal agents are preferred for endocarditis, meningitis, neutropenia, and severe sepsis.
2. Mechanism varies: cell wall disruption (beta-lactams), DNA damage (fluoroquinolones), protein synthesis misreading
(aminoglycosides).
3. Combinations may produce synergistic killing (e.g., beta-lactam + aminoglycoside).
, 6: What are antimetabolite antibiotics and which drugs belong to this class?
Correct Answer: Sulfonamides, Trimethoprim, and Nitrofurantoin.
1. Antimetabolites interfere with bacterial folate synthesis (sulfonamides, TMP) or DNA damage (nitrofurantoin).
2. Sulfonamides inhibit dihydropteroate synthase; TMP inhibits dihydrofolate reductase - sequential blockade.
3. Nitrofurantoin damages bacterial DNA and is concentrated in the urinary tract for UTIs.
7: When is empiric antibiotic therapy indicated?
Correct Answer: When cultures are not available or results are not back yet; based on NP's knowledge of
patient history, typical pathogens, gram stain results, and local susceptibility reports; critically ill patients
need immediate empiric broad-spectrum antibiotics after obtaining cultures.
1. Empiric therapy is initiated before culture results to prevent deterioration in serious infections.
2. Local antibiograms guide appropriate agent selection based on resistance patterns.
3. IV antibiotics for critical/severe illness; switch to PO once patient stabilizes and susceptibilities known.
8: What types of infections are usually viral and do not warrant antibacterial agents?
Correct Answer: Community-acquired, mostly viral upper respiratory tract infections.
1. Viral URIs include common cold, most pharyngitis, bronchitis in healthy patients; antibiotics provide no benefit.
2. Inappropriate antibiotic use exposes patients to adverse effects, C. diff, and resistance without benefit.
3. Clinical decision rules (Centor criteria) help identify bacterial pharyngitis that requires antibiotics.
9: What are the four categories of penicillins with examples?
Correct Answer: Narrow-spectrum penicillinase-sensitive (Penicillin G, V); Narrow-spectrum
penicillinase-resistant (Nafcillin, Oxacillin, Dicloxacillin); Broad-spectrum aminopenicillins (Ampicillin,
Amoxicillin); Extended-spectrum antipseudomonal (Piperacillin).
1. Penicillinase-resistant penicillins treat Staph aureus (not MRSA).
2. Amoxicillin is first-line for acute otitis media, sinusitis, and streptococcal pharyngitis.
3. Piperacillin combined with tazobactam (Zosyn) for pseudomonal and mixed infections.
10: What is the main contraindication for all penicillins?
Correct Answer: Penicillin allergy, ranging from minor rash to anaphylaxis; if severe, should NOT be
used.
1. Cross-reactivity with cephalosporins ~1-2% for severe IgE-mediated reactions.
2. Penicillin skin testing available for questionable history; negative test predicts tolerance.
3. Alternative agents for mild allergy: cephalosporins; for severe allergy: vancomycin, clindamycin, macrolides.
11: What monitoring is needed for penicillin antibiotics?
Correct Answer: Monitoring for renal impairment which can cause accumulation to toxic levels; also
monitor for allergy symptoms, C. difficile diarrhea; obtain baseline culture.
1. Renal adjustment required for penicillins when CrCl <30 mL/min to prevent neurotoxicity (seizures).
2. High doses may cause electrolyte disturbances (hyperkalemia with IV potassium penicillin).p>
3. C. difficile infection risk with all antibiotics; monitor for diarrhea, abdominal pain.
12: Which penicillins are safe in breastfeeding women?
Correct Answer: Amoxicillin is safe; data lacking for some other penicillins.
1. Amoxicillin is considered compatible with breastfeeding (minimal excretion into breast milk).
2. Monitor infant for diarrhea, rash, candidiasis.
3. CDC and AAP list penicillins as generally safe during lactation.
Practitioner: (Latest 2026/2027 Update) Midterm Exam Review | Q&A | Grade A | 100%
Correct (Verified Answers)
Subject: Advanced Pharmacology (NR568) - Adult-Gerontology Primary Care NP
Source: NR568 Midterm Exam Comprehensive Review - Latest 2026/2027 Blueprint
Format: Q&A Guide with Clinical Rationale | Evidence-Based Practice | Verified Accurate Solutions
Instructions: Each question includes the verified correct answer and a detailed clinical pharmacology rationale
covering antibiotic classes, antivirals, antifungals, anthelmintics, and specialized therapeutics.
1: What are the two main classification schemes for antimicrobial drugs?
Correct Answer: Classification by Susceptible Organism and Classification by Mechanism of Action.
1. Classification by susceptible organism includes antibacterial, antiviral, and antifungal drugs with varying spectra of activity.
2. Classification by mechanism of action includes cell wall synthesis inhibitors, protein synthesis inhibitors, DNA/RNA disruptors,
antimetabolites, and viral replication suppressors.
3. Understanding both schemes guides empiric therapy and targeted treatment based on pathogen and resistance patterns.
2: What does the acronym "Abx Can Terminate Protein Synthesis For Microbial Cells Like Germs" represent for
antibiotic classes?
Correct Answer: Aminoglycosides, Cephalosporins, Tetracyclines, Penicillins, Sulfonamides,
Fluoroquinolones, Macrolides, Carbapenems, Lincosamides, Glycopeptides.
1. This mnemonic helps recall the 10 major antibiotic classes for exam preparation.
2. Each class has unique mechanism, spectrum, and adverse effect profile.
3. Clinical application requires understanding which class treats specific pathogens and patient factors.
3: What is a beta-lactam antibiotic and what is its mechanism of action?
Correct Answer: Beta-lactams have a β-lactam ring in their structure (penicillins, cephalosporins,
carbapenems, aztreonam) and share the same mechanism of action: disruption of the bacterial cell wall;
they are bactericidal and require actively growing bacteria to work.
1. Beta-lactams inhibit penicillin-binding proteins (PBPs) which cross-link peptidoglycan strands in cell wall synthesis.
2. Cell wall disruption leads to osmotic lysis, particularly effective against gram-positive and some gram-negative bacteria.
3. Resistance occurs via beta-lactamase production, altered PBPs (MRSA), or efflux pumps.
4: Which antibiotic classes are bacteriostatic inhibitors of protein synthesis?
Correct Answer: Tetracycline, Macrolide, Clindamycin.
1. Bacteriostatic drugs inhibit bacterial growth without directly killing; host immune system clears infection.
2. Tetracyclines bind 30S ribosomal subunit; macrolides and clindamycin bind 50S subunit.
3. Not preferred in immunocompromised patients who need bactericidal activity.
5: Which antibiotic classes are bactericidal (directly kill bacteria)?
Correct Answer: Aminoglycosides, beta-lactams, fluoroquinolones, metronidazole, most
antimycobacterial agents, streptogramins, vancomycin.
1. Bactericidal agents are preferred for endocarditis, meningitis, neutropenia, and severe sepsis.
2. Mechanism varies: cell wall disruption (beta-lactams), DNA damage (fluoroquinolones), protein synthesis misreading
(aminoglycosides).
3. Combinations may produce synergistic killing (e.g., beta-lactam + aminoglycoside).
, 6: What are antimetabolite antibiotics and which drugs belong to this class?
Correct Answer: Sulfonamides, Trimethoprim, and Nitrofurantoin.
1. Antimetabolites interfere with bacterial folate synthesis (sulfonamides, TMP) or DNA damage (nitrofurantoin).
2. Sulfonamides inhibit dihydropteroate synthase; TMP inhibits dihydrofolate reductase - sequential blockade.
3. Nitrofurantoin damages bacterial DNA and is concentrated in the urinary tract for UTIs.
7: When is empiric antibiotic therapy indicated?
Correct Answer: When cultures are not available or results are not back yet; based on NP's knowledge of
patient history, typical pathogens, gram stain results, and local susceptibility reports; critically ill patients
need immediate empiric broad-spectrum antibiotics after obtaining cultures.
1. Empiric therapy is initiated before culture results to prevent deterioration in serious infections.
2. Local antibiograms guide appropriate agent selection based on resistance patterns.
3. IV antibiotics for critical/severe illness; switch to PO once patient stabilizes and susceptibilities known.
8: What types of infections are usually viral and do not warrant antibacterial agents?
Correct Answer: Community-acquired, mostly viral upper respiratory tract infections.
1. Viral URIs include common cold, most pharyngitis, bronchitis in healthy patients; antibiotics provide no benefit.
2. Inappropriate antibiotic use exposes patients to adverse effects, C. diff, and resistance without benefit.
3. Clinical decision rules (Centor criteria) help identify bacterial pharyngitis that requires antibiotics.
9: What are the four categories of penicillins with examples?
Correct Answer: Narrow-spectrum penicillinase-sensitive (Penicillin G, V); Narrow-spectrum
penicillinase-resistant (Nafcillin, Oxacillin, Dicloxacillin); Broad-spectrum aminopenicillins (Ampicillin,
Amoxicillin); Extended-spectrum antipseudomonal (Piperacillin).
1. Penicillinase-resistant penicillins treat Staph aureus (not MRSA).
2. Amoxicillin is first-line for acute otitis media, sinusitis, and streptococcal pharyngitis.
3. Piperacillin combined with tazobactam (Zosyn) for pseudomonal and mixed infections.
10: What is the main contraindication for all penicillins?
Correct Answer: Penicillin allergy, ranging from minor rash to anaphylaxis; if severe, should NOT be
used.
1. Cross-reactivity with cephalosporins ~1-2% for severe IgE-mediated reactions.
2. Penicillin skin testing available for questionable history; negative test predicts tolerance.
3. Alternative agents for mild allergy: cephalosporins; for severe allergy: vancomycin, clindamycin, macrolides.
11: What monitoring is needed for penicillin antibiotics?
Correct Answer: Monitoring for renal impairment which can cause accumulation to toxic levels; also
monitor for allergy symptoms, C. difficile diarrhea; obtain baseline culture.
1. Renal adjustment required for penicillins when CrCl <30 mL/min to prevent neurotoxicity (seizures).
2. High doses may cause electrolyte disturbances (hyperkalemia with IV potassium penicillin).p>
3. C. difficile infection risk with all antibiotics; monitor for diarrhea, abdominal pain.
12: Which penicillins are safe in breastfeeding women?
Correct Answer: Amoxicillin is safe; data lacking for some other penicillins.
1. Amoxicillin is considered compatible with breastfeeding (minimal excretion into breast milk).
2. Monitor infant for diarrhea, rash, candidiasis.
3. CDC and AAP list penicillins as generally safe during lactation.
