NR509 MIDTERM 2026 CHAMBERLAIN
ACTUAL EXAM TEST WITH QUESTIONS
AND CORRECT ANSWERS GRADE A+
A mother brings her 8-year-old daughter to the clinic because she
found a tick in the girl's hair and would like her daughter to be
tested for Lyme disease. The nurse practitioner (NP) explains that
the enzyme-linked immunosorbent assay (ELISA), an early test
for Lyme disease, is effective in finding early cases of Lyme
disease but can also give positive results in some people who do
not have the disease, making additional testing necessary. This
means that the ELISA test has which of the following?
a. Low sensitivity, high specificity
b. High sensitivity, high specificity
c. High sensitivity, low specificity
d. Low sensitivity, low specificity
e. Undetermined sensitivity and specificity Correct Answer c. High
sensitivity, low specificity
A theoretical laboratory test for infection with HIV is known to
have high sensitivity. This means that the test has which of the
following?
,a. Good ability to rule in HIV in those who do have HIV
b. Good ability to rule out HIV in those who do not have HIV
c. High intraobserver reliability
d. High interobserver reliability
e. Good ability to diagnose AIDS Correct Answer b. Good ability
to rule out HIV in those who do not have HIV
A theoretical new laboratory test for strep throat has high
specificity. When a test has high specificity, clinicians can be
confident in which of the following aspects?
a. If the test result is positive, the patient probably has strep
throat.
b. If the test result is positive, the patient probably does not have
strep throat.
c. If the test result is negative, the patient probably has strep
throat.
d. If the test result is negative, the patient probably does not have
strep throat.
e. If the test result is positive, a confirmatory test should be
performed. Correct Answer a. If the test result is positive, the
patient probably has strep throat.
,Weight change may indicate the presence of important underlying
pathology requiring further investigation. Which of the following
best describes a significant weight change that requires further
evaluation?
a. A 45-year-old male with baseline weight of 280 lb who decides
to undertake a light exercise regimen and loses 15% of
his total body weight in 3 months
b. A 32-year-old female with a baseline weight of 175 lb who
checks her weight irregularly but reports a 5-lb unintended weight
loss over 3 months
c. A 45-year-old recently menopausal female who gains 5%
beyond her baseline weight of 140 lb in 6 months
d. A 26-year-old female with a baseline body mass index (BMI) of
25 who loses 5% of her body weight with 6 months of diet and
exercise modification
e. A 31-year-old male with a baseline body mass index (BMI) of
20 who loses 3 lb after a prolonged bout of infectious
gastroenteritis Correct Answer a. A 45-year-old male with baseline
weight of 280 lb who decides to undertake a light exercise
regimen and loses 15% of
A 19-year-old student of art history presents to clinic after a
syncopal (fainting) episode at school. He is notably thin; on a
thorough review of his medical history, he admits that he eats only
minimally to maintain a very low body weight that he feels is ideal.
He is embarrassed that his issues were discussed by peers after
, this episode, especially because he believes that this is a problem
that is only faced by girls and women. Concerning the two most
common eating disorders (anorexia nervosa and bulimia
nervosa), which of the following statements is true?
a. Men and women are both afflicted, but with a female:male
prevalence ratio estimated at ~2:1.
b. Both of these eating disorders are associated with a body mass
index (BMI) of <17.5.
c. Both of these eating disorders are associated with a real or
imagined fear of appearing fat.
d. Persons with eating disorders are generally easily identified by
their appeara Correct Answer c. Both of these eating disorders
are associated with a real or imagined fear of appearing fat.
A 55-year-old air traffic control agent reports his home blood
pressure log to clinic after he was diagnosed with hypertension at
a prior visit. He notes that he consistently measures within the
normal range at home, but seems to fall outside the normal range
every time he comes to the clinic. Which of the following blood
pressure measurements is considered to be most accurate (i.e.,
reflecting the patient's "true" blood pressure)?
a. Blood pressure recorded in three positions in the health
practitioner's office
ACTUAL EXAM TEST WITH QUESTIONS
AND CORRECT ANSWERS GRADE A+
A mother brings her 8-year-old daughter to the clinic because she
found a tick in the girl's hair and would like her daughter to be
tested for Lyme disease. The nurse practitioner (NP) explains that
the enzyme-linked immunosorbent assay (ELISA), an early test
for Lyme disease, is effective in finding early cases of Lyme
disease but can also give positive results in some people who do
not have the disease, making additional testing necessary. This
means that the ELISA test has which of the following?
a. Low sensitivity, high specificity
b. High sensitivity, high specificity
c. High sensitivity, low specificity
d. Low sensitivity, low specificity
e. Undetermined sensitivity and specificity Correct Answer c. High
sensitivity, low specificity
A theoretical laboratory test for infection with HIV is known to
have high sensitivity. This means that the test has which of the
following?
,a. Good ability to rule in HIV in those who do have HIV
b. Good ability to rule out HIV in those who do not have HIV
c. High intraobserver reliability
d. High interobserver reliability
e. Good ability to diagnose AIDS Correct Answer b. Good ability
to rule out HIV in those who do not have HIV
A theoretical new laboratory test for strep throat has high
specificity. When a test has high specificity, clinicians can be
confident in which of the following aspects?
a. If the test result is positive, the patient probably has strep
throat.
b. If the test result is positive, the patient probably does not have
strep throat.
c. If the test result is negative, the patient probably has strep
throat.
d. If the test result is negative, the patient probably does not have
strep throat.
e. If the test result is positive, a confirmatory test should be
performed. Correct Answer a. If the test result is positive, the
patient probably has strep throat.
,Weight change may indicate the presence of important underlying
pathology requiring further investigation. Which of the following
best describes a significant weight change that requires further
evaluation?
a. A 45-year-old male with baseline weight of 280 lb who decides
to undertake a light exercise regimen and loses 15% of
his total body weight in 3 months
b. A 32-year-old female with a baseline weight of 175 lb who
checks her weight irregularly but reports a 5-lb unintended weight
loss over 3 months
c. A 45-year-old recently menopausal female who gains 5%
beyond her baseline weight of 140 lb in 6 months
d. A 26-year-old female with a baseline body mass index (BMI) of
25 who loses 5% of her body weight with 6 months of diet and
exercise modification
e. A 31-year-old male with a baseline body mass index (BMI) of
20 who loses 3 lb after a prolonged bout of infectious
gastroenteritis Correct Answer a. A 45-year-old male with baseline
weight of 280 lb who decides to undertake a light exercise
regimen and loses 15% of
A 19-year-old student of art history presents to clinic after a
syncopal (fainting) episode at school. He is notably thin; on a
thorough review of his medical history, he admits that he eats only
minimally to maintain a very low body weight that he feels is ideal.
He is embarrassed that his issues were discussed by peers after
, this episode, especially because he believes that this is a problem
that is only faced by girls and women. Concerning the two most
common eating disorders (anorexia nervosa and bulimia
nervosa), which of the following statements is true?
a. Men and women are both afflicted, but with a female:male
prevalence ratio estimated at ~2:1.
b. Both of these eating disorders are associated with a body mass
index (BMI) of <17.5.
c. Both of these eating disorders are associated with a real or
imagined fear of appearing fat.
d. Persons with eating disorders are generally easily identified by
their appeara Correct Answer c. Both of these eating disorders
are associated with a real or imagined fear of appearing fat.
A 55-year-old air traffic control agent reports his home blood
pressure log to clinic after he was diagnosed with hypertension at
a prior visit. He notes that he consistently measures within the
normal range at home, but seems to fall outside the normal range
every time he comes to the clinic. Which of the following blood
pressure measurements is considered to be most accurate (i.e.,
reflecting the patient's "true" blood pressure)?
a. Blood pressure recorded in three positions in the health
practitioner's office
