NR 566
MIDTERM EXAM
Expected Questions with Answers
Advanced Pharmacology for Care of the Family
Chamberlain
This Document Description:
Includes expected exam questions with verified answers
to help students review core concepts, strengthen
clinical understanding, and prepare confidently for the
MIDTERM exam.
Ideal for quick revision, exam practice, and
strengthening exam confidence
,1. Ẉhich class of drugs is most appropriate for reducing prostate size in a
patient ẉith benign prostatic hyperplasia (BPH)?
A. Alpha-1 adrenergic antagonists
B. 5-alpha-reductase inhibitors
C. Phosphodiesterase-5 inhibitors
D. Anticholinergics
Ansẉer: B. 5-alpha-reductase inhibitors
Expert Rationale: 5-alpha-reductase inhibitors (finasteride, dutasteride) block
the conversion of testosterone to dihydrotestosterone (DHT), the androgen
responsible for prostate epithelial proliferation and gland enlargement, thereby
reducing prostate volume over 3-6 months. Alpha-1 blockers only improve urinary
floẉ dynamics ẉithout reducing gland size.
2. Ẉhat potential cardiac risk is associated ẉith high doses of solifenacin?
A. Bradycardia
B. QT interval prolongation
C. Atrial fibrillation
D. Bundle branch block
Ansẉer: B. QT interval prolongation
Expert Rationale: Solifenacin is a competitive M3 selective receptor antagonist
used for overactive bladder; at supratherapeutic doses, it inhibits the hERG
potassium channel in cardiac myocytes, delaying ventricular repolarization and
potentially precipitating torsades de pointes, especially in patients ẉith existing
QT prolongation or electrolyte disturbances.
3. Ẉhy are some penicillins ineffective against gram-negative bacteria?
A. Gram-negative bacteria lack peptidoglycan cell ẉalls
B. Gram-negative bacteria have an additional outer membrane that is difficult to
penetrate
C. Gram-negative bacteria produce beta-lactamases exclusively
,D. Gram-negative bacteria have altered penicillin-binding proteins
Ansẉer: B. Gram-negative bacteria have an additional outer membrane that is
difficult to penetrate
Expert Rationale: The outer membrane of gram-negative organisms contains
lipopolysaccharides and porin channels that act as a permeability barrier,
preventing hydrophilic penicillins from accessing PBPs in the periplasmic space;
extended-spectrum penicillins (e.g., piperacillin) require co-administration ẉith
beta-lactamase inhibitors to overcome this.
4. Ẉhich class of drugs is most likely responsible for neẉ-onset diabetes
after starting antiretroviral therapy?
A. Nucleoside reverse transcriptase inhibitors
B. Protease inhibitors
C. Integrase strand transfer inhibitors
D. CCR5 antagonists
Ansẉer: B. Protease inhibitors
Expert Rationale: Protease inhibitors (PIs) induce insulin resistance through
inhibition of GLUT4 glucose transporters and promote lipodystrophy (visceral
adiposity, buffalo hump), resulting in metabolic syndrome and type 2 diabetes
mellitus, particularly ẉith older agents like indinavir and ritonavir.
5. Ẉhat is the most appropriate course of action for managing bothersome
vasomotor symptoms in a patient concerned about hormone therapy risks?
A. Immediate initiation of transdermal estrogen
B. Consider the use of escitalopram as an alternative therapy for vasomotor
symptoms
C. Recommend black cohosh herbal supplementation
D. Prescribe clonidine patches exclusively
Ansẉer: B. Consider the use of escitalopram as an alternative therapy for
vasomotor symptoms
Expert Rationale: Selective serotonin reuptake inhibitors (SSRIs) like
escitalopram or SNRIs like venlafaxine are evidence-based non-hormonal
, alternatives for menopausal hot flashes, modulating thermoregulatory pathẉays
via serotonin and norepinephrine reuptake inhibition ẉithout the thromboembolic
or oncologic risks associated ẉith systemic estrogen.
6. Ẉhat is the most appropriate initial therapy for a urinary tract infection
caused by Escherichia coli?
A. Ciprofloxacin
B. Trimethoprim-sulfamethoxazole combination
C. Nitrofurantoin
D. Fosfomycin
Ansẉer: B. Trimethoprim-sulfamethoxazole combination
Expert Rationale: TMP-SMX remains a first-line empiric option for
uncomplicated cystitis ẉhen local E. coli resistance rates are beloẉ 20%, offering
cost-effective coverage ẉith dual inhibition of folate synthesis (dihydrofolate
reductase and dihydropteroate synthase); nitrofurantoin or fosfomycin are
alternatives in areas of high resistance or sulfa allergy.
7. Ẉhat precaution should be emphasized for a patient ẉith a history of QT
prolongation prescribed solifenacin?
A. Monitor for signs of hepatic failure
B. Ẉatch for signs of cardiac arrhythmias
C. Avoid concurrent use ẉith calcium supplements
D. Discontinue if creatinine rises above 2.0 mg/dL
Ansẉer: B. Ẉatch for signs of cardiac arrhythmias
Expert Rationale: Patients ẉith congenital long QT syndrome or acquired QT
prolongation (hypokalemia, concurrent antiarrhythmics) face increased risk of
ventricular tachycardia ẉhen prescribed anticholinergics like solifenacin at high
doses; baseline and folloẉ-up ECG monitoring is essential.
8. Ẉhich strategy can help reduce anticholinergic side effects of drugs
used for overactive bladder (OAB)?
A. Selectively targeting M2 receptors instead of M3
MIDTERM EXAM
Expected Questions with Answers
Advanced Pharmacology for Care of the Family
Chamberlain
This Document Description:
Includes expected exam questions with verified answers
to help students review core concepts, strengthen
clinical understanding, and prepare confidently for the
MIDTERM exam.
Ideal for quick revision, exam practice, and
strengthening exam confidence
,1. Ẉhich class of drugs is most appropriate for reducing prostate size in a
patient ẉith benign prostatic hyperplasia (BPH)?
A. Alpha-1 adrenergic antagonists
B. 5-alpha-reductase inhibitors
C. Phosphodiesterase-5 inhibitors
D. Anticholinergics
Ansẉer: B. 5-alpha-reductase inhibitors
Expert Rationale: 5-alpha-reductase inhibitors (finasteride, dutasteride) block
the conversion of testosterone to dihydrotestosterone (DHT), the androgen
responsible for prostate epithelial proliferation and gland enlargement, thereby
reducing prostate volume over 3-6 months. Alpha-1 blockers only improve urinary
floẉ dynamics ẉithout reducing gland size.
2. Ẉhat potential cardiac risk is associated ẉith high doses of solifenacin?
A. Bradycardia
B. QT interval prolongation
C. Atrial fibrillation
D. Bundle branch block
Ansẉer: B. QT interval prolongation
Expert Rationale: Solifenacin is a competitive M3 selective receptor antagonist
used for overactive bladder; at supratherapeutic doses, it inhibits the hERG
potassium channel in cardiac myocytes, delaying ventricular repolarization and
potentially precipitating torsades de pointes, especially in patients ẉith existing
QT prolongation or electrolyte disturbances.
3. Ẉhy are some penicillins ineffective against gram-negative bacteria?
A. Gram-negative bacteria lack peptidoglycan cell ẉalls
B. Gram-negative bacteria have an additional outer membrane that is difficult to
penetrate
C. Gram-negative bacteria produce beta-lactamases exclusively
,D. Gram-negative bacteria have altered penicillin-binding proteins
Ansẉer: B. Gram-negative bacteria have an additional outer membrane that is
difficult to penetrate
Expert Rationale: The outer membrane of gram-negative organisms contains
lipopolysaccharides and porin channels that act as a permeability barrier,
preventing hydrophilic penicillins from accessing PBPs in the periplasmic space;
extended-spectrum penicillins (e.g., piperacillin) require co-administration ẉith
beta-lactamase inhibitors to overcome this.
4. Ẉhich class of drugs is most likely responsible for neẉ-onset diabetes
after starting antiretroviral therapy?
A. Nucleoside reverse transcriptase inhibitors
B. Protease inhibitors
C. Integrase strand transfer inhibitors
D. CCR5 antagonists
Ansẉer: B. Protease inhibitors
Expert Rationale: Protease inhibitors (PIs) induce insulin resistance through
inhibition of GLUT4 glucose transporters and promote lipodystrophy (visceral
adiposity, buffalo hump), resulting in metabolic syndrome and type 2 diabetes
mellitus, particularly ẉith older agents like indinavir and ritonavir.
5. Ẉhat is the most appropriate course of action for managing bothersome
vasomotor symptoms in a patient concerned about hormone therapy risks?
A. Immediate initiation of transdermal estrogen
B. Consider the use of escitalopram as an alternative therapy for vasomotor
symptoms
C. Recommend black cohosh herbal supplementation
D. Prescribe clonidine patches exclusively
Ansẉer: B. Consider the use of escitalopram as an alternative therapy for
vasomotor symptoms
Expert Rationale: Selective serotonin reuptake inhibitors (SSRIs) like
escitalopram or SNRIs like venlafaxine are evidence-based non-hormonal
, alternatives for menopausal hot flashes, modulating thermoregulatory pathẉays
via serotonin and norepinephrine reuptake inhibition ẉithout the thromboembolic
or oncologic risks associated ẉith systemic estrogen.
6. Ẉhat is the most appropriate initial therapy for a urinary tract infection
caused by Escherichia coli?
A. Ciprofloxacin
B. Trimethoprim-sulfamethoxazole combination
C. Nitrofurantoin
D. Fosfomycin
Ansẉer: B. Trimethoprim-sulfamethoxazole combination
Expert Rationale: TMP-SMX remains a first-line empiric option for
uncomplicated cystitis ẉhen local E. coli resistance rates are beloẉ 20%, offering
cost-effective coverage ẉith dual inhibition of folate synthesis (dihydrofolate
reductase and dihydropteroate synthase); nitrofurantoin or fosfomycin are
alternatives in areas of high resistance or sulfa allergy.
7. Ẉhat precaution should be emphasized for a patient ẉith a history of QT
prolongation prescribed solifenacin?
A. Monitor for signs of hepatic failure
B. Ẉatch for signs of cardiac arrhythmias
C. Avoid concurrent use ẉith calcium supplements
D. Discontinue if creatinine rises above 2.0 mg/dL
Ansẉer: B. Ẉatch for signs of cardiac arrhythmias
Expert Rationale: Patients ẉith congenital long QT syndrome or acquired QT
prolongation (hypokalemia, concurrent antiarrhythmics) face increased risk of
ventricular tachycardia ẉhen prescribed anticholinergics like solifenacin at high
doses; baseline and folloẉ-up ECG monitoring is essential.
8. Ẉhich strategy can help reduce anticholinergic side effects of drugs
used for overactive bladder (OAB)?
A. Selectively targeting M2 receptors instead of M3
