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# NURS 5463 ADVANCED PHARMACOLOGY
EXAM 3
## COMPREHENSIVE PRACTICE QUESTION
BANK
### 2026-2027 ACADEMIC YEAR
# UNIT 1: INFECTIOUS DISEASES & ANTIMICROBIAL THERAPY
## 1.1 Bacterial Infections & Antibiotics
### Question 1
A patient presents with a wound infection. Gram staining reveals grape-like clusters of gram-
positive cocci. Which organism is MOST likely responsible?
A. Streptococcus pneumoniae
B. Staphylococcus aureus
C. Neisseria meningitidis
D. Escherichia coli
**Correct Answer: B. Staphylococcus aureus**
**Rationale:** Staphylococcus aureus appears as grape-like clusters of gram-positive cocci on
Gram staining. This is a classic distinguishing characteristic of Staphylococcus species. The
,2|Page
grape-like cluster arrangement differentiates staphylococci from streptococci, which appear in
chains or pairs. S. aureus is a common cause of wound infections, skin and soft tissue infections,
and is clinically significant for its potential to cause serious infections and its antibiotic
resistance patterns .
**Why the other options are incorrect:**
- **A. Streptococcus pneumoniae** is incorrect because although it is a gram-positive coccus, it
typically appears in pairs (diplococci) or chains, not grape-like clusters.
- **C. Neisseria meningitidis** is incorrect because it is a gram-negative diplococcus, not gram-
positive. It appears as kidney-bean shaped diplococci.
- **D. Escherichia coli** is incorrect because it is a gram-negative rod (bacillus), not a coccus.
---
### Question 2
A patient with pneumonia is started on ceftriaxone. Which statement about ceftriaxone is
CORRECT?
A. It requires renal dose adjustment
B. It is a first-generation cephalosporin
C. It penetrates the central nervous system (CNS)
D. It has no activity against gram-negative organisms
**Correct Answer: C. It penetrates the central nervous system (CNS)**
**Rationale:** Ceftriaxone is a third-generation cephalosporin that penetrates the CNS and is
used to treat meningitis. Unlike many other cephalosporins, ceftriaxone does not require renal
dose adjustment because it is primarily eliminated through biliary excretion. Third-generation
,3|Page
cephalosporins have enhanced gram-negative coverage compared to earlier generations.
Ceftriaxone is commonly used for community-acquired pneumonia, meningitis, and gonorrhea .
**Why the other options are incorrect:**
- **A. Requires renal dose adjustment** is incorrect because ceftriaxone is primarily eliminated
via the biliary tract and does not require dose adjustment for renal impairment.
- **B. First-generation cephalosporin** is incorrect because ceftriaxone is a third-generation
cephalosporin. First-generation agents include cephalexin and cefazolin.
- **D. No activity against gram-negative organisms** is incorrect because third-generation
cephalosporins have enhanced gram-negative coverage, including activity against many
Enterobacteriaceae.
---
### Question 3
A 65-year-old patient develops hospital-acquired pneumonia (HAP). Which organisms are the
MOST common causes of HAP?
A. Streptococcus pneumoniae and Mycoplasma pneumoniae
B. Klebsiella, Pseudomonas, and E. coli
C. Haemophilus influenzae and Moraxella catarrhalis
D. Legionella and Chlamydia
**Correct Answer: B. Klebsiella, Pseudomonas, and E. coli**
**Rationale:** Hospital-acquired pneumonia (HAP) is commonly caused by gram-negative
organisms including Klebsiella species, Pseudomonas aeruginosa, and Escherichia coli. These
organisms are associated with healthcare settings and are often multidrug-resistant. The choice of
empiric antibiotics for HAP must cover these organisms, including consideration for MRSA and
, 4|Page
Pseudomonas coverage . Community-acquired pneumonia (CAP) is more commonly caused by
Streptococcus pneumoniae and atypical organisms.
**Why the other options are incorrect:**
- **A. S. pneumoniae and Mycoplasma** is incorrect because these are typical causes of
community-acquired pneumonia, not hospital-acquired pneumonia.
- **C. H. influenzae and M. catarrhalis** is incorrect because these organisms are more
commonly associated with community-acquired pneumonia and exacerbations of COPD.
- **D. Legionella and Chlamydia** is incorrect because these are atypical causes of community-
acquired pneumonia.
---
### Question 4
A patient is diagnosed with a urinary tract infection (UTI) caused by an extended-spectrum beta-
lactamase (ESBL)-producing E. coli. Which antibiotic class is the treatment of choice for ESBL-
producing Enterobacteriaceae?
A. Cephalosporins
B. Carbapenems
C. Penicillins
D. Macrolides
**Correct Answer: B. Carbapenems**
**Rationale:** Carbapenems are the treatment of choice for infections caused by ESBL-
producing Enterobacteriaceae. ESBL enzymes hydrolyze and inactivate penicillins,
cephalosporins, and aztreonam. Carbapenems (such as meropenem, imipenem-cilastatin, and
ertapenem) are resistant to ESBL-mediated hydrolysis and are the drugs of choice for serious
# NURS 5463 ADVANCED PHARMACOLOGY
EXAM 3
## COMPREHENSIVE PRACTICE QUESTION
BANK
### 2026-2027 ACADEMIC YEAR
# UNIT 1: INFECTIOUS DISEASES & ANTIMICROBIAL THERAPY
## 1.1 Bacterial Infections & Antibiotics
### Question 1
A patient presents with a wound infection. Gram staining reveals grape-like clusters of gram-
positive cocci. Which organism is MOST likely responsible?
A. Streptococcus pneumoniae
B. Staphylococcus aureus
C. Neisseria meningitidis
D. Escherichia coli
**Correct Answer: B. Staphylococcus aureus**
**Rationale:** Staphylococcus aureus appears as grape-like clusters of gram-positive cocci on
Gram staining. This is a classic distinguishing characteristic of Staphylococcus species. The
,2|Page
grape-like cluster arrangement differentiates staphylococci from streptococci, which appear in
chains or pairs. S. aureus is a common cause of wound infections, skin and soft tissue infections,
and is clinically significant for its potential to cause serious infections and its antibiotic
resistance patterns .
**Why the other options are incorrect:**
- **A. Streptococcus pneumoniae** is incorrect because although it is a gram-positive coccus, it
typically appears in pairs (diplococci) or chains, not grape-like clusters.
- **C. Neisseria meningitidis** is incorrect because it is a gram-negative diplococcus, not gram-
positive. It appears as kidney-bean shaped diplococci.
- **D. Escherichia coli** is incorrect because it is a gram-negative rod (bacillus), not a coccus.
---
### Question 2
A patient with pneumonia is started on ceftriaxone. Which statement about ceftriaxone is
CORRECT?
A. It requires renal dose adjustment
B. It is a first-generation cephalosporin
C. It penetrates the central nervous system (CNS)
D. It has no activity against gram-negative organisms
**Correct Answer: C. It penetrates the central nervous system (CNS)**
**Rationale:** Ceftriaxone is a third-generation cephalosporin that penetrates the CNS and is
used to treat meningitis. Unlike many other cephalosporins, ceftriaxone does not require renal
dose adjustment because it is primarily eliminated through biliary excretion. Third-generation
,3|Page
cephalosporins have enhanced gram-negative coverage compared to earlier generations.
Ceftriaxone is commonly used for community-acquired pneumonia, meningitis, and gonorrhea .
**Why the other options are incorrect:**
- **A. Requires renal dose adjustment** is incorrect because ceftriaxone is primarily eliminated
via the biliary tract and does not require dose adjustment for renal impairment.
- **B. First-generation cephalosporin** is incorrect because ceftriaxone is a third-generation
cephalosporin. First-generation agents include cephalexin and cefazolin.
- **D. No activity against gram-negative organisms** is incorrect because third-generation
cephalosporins have enhanced gram-negative coverage, including activity against many
Enterobacteriaceae.
---
### Question 3
A 65-year-old patient develops hospital-acquired pneumonia (HAP). Which organisms are the
MOST common causes of HAP?
A. Streptococcus pneumoniae and Mycoplasma pneumoniae
B. Klebsiella, Pseudomonas, and E. coli
C. Haemophilus influenzae and Moraxella catarrhalis
D. Legionella and Chlamydia
**Correct Answer: B. Klebsiella, Pseudomonas, and E. coli**
**Rationale:** Hospital-acquired pneumonia (HAP) is commonly caused by gram-negative
organisms including Klebsiella species, Pseudomonas aeruginosa, and Escherichia coli. These
organisms are associated with healthcare settings and are often multidrug-resistant. The choice of
empiric antibiotics for HAP must cover these organisms, including consideration for MRSA and
, 4|Page
Pseudomonas coverage . Community-acquired pneumonia (CAP) is more commonly caused by
Streptococcus pneumoniae and atypical organisms.
**Why the other options are incorrect:**
- **A. S. pneumoniae and Mycoplasma** is incorrect because these are typical causes of
community-acquired pneumonia, not hospital-acquired pneumonia.
- **C. H. influenzae and M. catarrhalis** is incorrect because these organisms are more
commonly associated with community-acquired pneumonia and exacerbations of COPD.
- **D. Legionella and Chlamydia** is incorrect because these are atypical causes of community-
acquired pneumonia.
---
### Question 4
A patient is diagnosed with a urinary tract infection (UTI) caused by an extended-spectrum beta-
lactamase (ESBL)-producing E. coli. Which antibiotic class is the treatment of choice for ESBL-
producing Enterobacteriaceae?
A. Cephalosporins
B. Carbapenems
C. Penicillins
D. Macrolides
**Correct Answer: B. Carbapenems**
**Rationale:** Carbapenems are the treatment of choice for infections caused by ESBL-
producing Enterobacteriaceae. ESBL enzymes hydrolyze and inactivate penicillins,
cephalosporins, and aztreonam. Carbapenems (such as meropenem, imipenem-cilastatin, and
ertapenem) are resistant to ESBL-mediated hydrolysis and are the drugs of choice for serious
