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PNCB CPN EXAM TEST BANK - ACTUAL EXAM
QUESTIONS AND CORRECT ANSWERS (150 Q &A)
ALREADY GRADED A+ | CPN EXAM | GUARANTEED
PASS | UPDATED 2026-2027.
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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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 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.
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.
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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.
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.
Estimation of gestational age may be done in many ways.
Nagele's rule is the most accurate and involves calculations
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using which parameter? A. Mother's last menstrual period. B.
Fundal height.
C. Crown-rump length (CRL) on ultrasound.
D. Estimated weight on ultrasound.
A: Nagele's rule uses the mother's LMP and is the most accurate
determination of gestational age. It is represented as estimated date
of confinement (EDC) = 280 days + 7 days from LMP.
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.
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.
PNCB CPN EXAM TEST BANK - ACTUAL EXAM
QUESTIONS AND CORRECT ANSWERS (150 Q &A)
ALREADY GRADED A+ | CPN EXAM | GUARANTEED
PASS | UPDATED 2026-2027.
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
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 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.
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.
,3 | Page
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.
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.
Estimation of gestational age may be done in many ways.
Nagele's rule is the most accurate and involves calculations
, 4 | Page
using which parameter? A. Mother's last menstrual period. B.
Fundal height.
C. Crown-rump length (CRL) on ultrasound.
D. Estimated weight on ultrasound.
A: Nagele's rule uses the mother's LMP and is the most accurate
determination of gestational age. It is represented as estimated date
of confinement (EDC) = 280 days + 7 days from LMP.
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.
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.
