1|Page
PNCB CPN EXAM BANK 2025 ACTUAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) ALL ANSWERED {150 Q &A}
ALREADY GRADED A+/ CPN EXAM / FREQUENTLY
TESTED QUESTIONS | GUARANTEED PASS
A neonate has anorexia, lethargy, vomiting, and seizures. He is
thought to have an inborn
error of metabolism with a high ammonia level. Which of the
following is NOT an inborn error
of metabolism disease?
A. Argininosuccinase deficiency
B. Ornithine transcarbamylase deficiency
C. Cystic fibrosis
D. HMG-CoA lyase deficiency
C: Cystic fibrosis is a disorder of chloride channels in cells and is
not an inborn error of metabolism disorder, argininosuccinase
deficiency, ornithine transcarbamylase deficiency, and HMG-CoA
lyase deficiency are inborn errors of metabolism.
Hyperammonemia is common to many diseases associated with
an inborn error of metabolism.
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Depressed or inverted T-waves on ECG analysis can occur with
many different clinical
situations in pediatric patients. Which of the following is NOT a
common reason for depressed
or inverted T-waves?
A. Hypokalemia.
B. Myocarditis.
C. Digitalis toxicity.
D. Hyperthyroidism.
B: Hyperthyroidism commonly causes an increase in T-wave
amplitude, not a decrease.
Myocarditis, hypokalemia, and digitalis toxicity are common
reasons for inverted or decreased Twaves.
Hemolytic uremic syndrome (HUS) is a post-infectious disorder
causing nephropathy,
hemolytic anemia, and thrombocytopenia. It is seen following
upper respiratory illnesses and
following GI infections after eating meat contaminated with
bacteria. What enteric bacteria
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have been linked to HUS?
A. Escherichia coli O157:H7.
B. Clostridium difficile.
C. Rotavirus.
D. Vibrio cholera.
A: E. coli O157:H7 from contaminated ground meat is the most
common bacterial cause of HUS although other bacteria, such as
Shigella dysenteriae, may also cause HUS.
A humanistic theorist of the 20th century described a hierarchy
of basic needs for all
humans. His "hierarchy of needs" builds from the most basic for
survival (physiologic) and ends
to the most developed (self-actualization). What is the name of
this philosopher?
A. Carl Rogers.
B. Lawrence Kohlberg.
C. John Bowlby.
D. Abraham Maslow.
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D: Abraham Maslow wrote about the "hierarchy of needs"
concept. Carl Rogers developed the person-centered humanistic
approach to psychology. Lawrence Kohlberg described stages in
moral development, and John Bowlby developed a theory of
attachment.
Infectious protozoa are eukaryotic organisms that can cause
gastrointestinal diseases,
especially in developing countries, where travelers may become
infected. Which of the
following organisms is a protozoan?
A. Giardia lamblia.
B. Salmonella typhi.
C. Escherichia coli (E. coli).
D. Vibrio cholera.
A: Giardia lamblia is a protozoan that causes infectious
gastroenteritis in those who drink contaminated water or touch
contaminated hands to the mouth. Salmonella typhi, E. coli, and
Vibrio cholera are bacteria.
PNCB CPN EXAM BANK 2025 ACTUAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) ALL ANSWERED {150 Q &A}
ALREADY GRADED A+/ CPN EXAM / FREQUENTLY
TESTED QUESTIONS | GUARANTEED PASS
A neonate has anorexia, lethargy, vomiting, and seizures. He is
thought to have an inborn
error of metabolism with a high ammonia level. Which of the
following is NOT an inborn error
of metabolism disease?
A. Argininosuccinase deficiency
B. Ornithine transcarbamylase deficiency
C. Cystic fibrosis
D. HMG-CoA lyase deficiency
C: Cystic fibrosis is a disorder of chloride channels in cells and is
not an inborn error of metabolism disorder, argininosuccinase
deficiency, ornithine transcarbamylase deficiency, and HMG-CoA
lyase deficiency are inborn errors of metabolism.
Hyperammonemia is common to many diseases associated with
an inborn error of metabolism.
,2|Page
Depressed or inverted T-waves on ECG analysis can occur with
many different clinical
situations in pediatric patients. Which of the following is NOT a
common reason for depressed
or inverted T-waves?
A. Hypokalemia.
B. Myocarditis.
C. Digitalis toxicity.
D. Hyperthyroidism.
B: Hyperthyroidism commonly causes an increase in T-wave
amplitude, not a decrease.
Myocarditis, hypokalemia, and digitalis toxicity are common
reasons for inverted or decreased Twaves.
Hemolytic uremic syndrome (HUS) is a post-infectious disorder
causing nephropathy,
hemolytic anemia, and thrombocytopenia. It is seen following
upper respiratory illnesses and
following GI infections after eating meat contaminated with
bacteria. What enteric bacteria
,3|Page
have been linked to HUS?
A. Escherichia coli O157:H7.
B. Clostridium difficile.
C. Rotavirus.
D. Vibrio cholera.
A: E. coli O157:H7 from contaminated ground meat is the most
common bacterial cause of HUS although other bacteria, such as
Shigella dysenteriae, may also cause HUS.
A humanistic theorist of the 20th century described a hierarchy
of basic needs for all
humans. His "hierarchy of needs" builds from the most basic for
survival (physiologic) and ends
to the most developed (self-actualization). What is the name of
this philosopher?
A. Carl Rogers.
B. Lawrence Kohlberg.
C. John Bowlby.
D. Abraham Maslow.
, 4|Page
D: Abraham Maslow wrote about the "hierarchy of needs"
concept. Carl Rogers developed the person-centered humanistic
approach to psychology. Lawrence Kohlberg described stages in
moral development, and John Bowlby developed a theory of
attachment.
Infectious protozoa are eukaryotic organisms that can cause
gastrointestinal diseases,
especially in developing countries, where travelers may become
infected. Which of the
following organisms is a protozoan?
A. Giardia lamblia.
B. Salmonella typhi.
C. Escherichia coli (E. coli).
D. Vibrio cholera.
A: Giardia lamblia is a protozoan that causes infectious
gastroenteritis in those who drink contaminated water or touch
contaminated hands to the mouth. Salmonella typhi, E. coli, and
Vibrio cholera are bacteria.
