NUR 376 EXAM 4 EXAM 300 ACTUAL
QUESTIONS AND CORRECT ANSWERS WITH
RATIONALE LATEST UPDATE ALREADY
GRADED A+ ASSURED PASS
This comprehensive NUR 376 Exam 4 resource contains 300 unique, multiple-
choice questions with answers and detailed rationales, organized into six distinct
sections. It covers applied pathophysiology topics including immunity and
inflammation, fluid and electrolyte balance, cardiovascular and respiratory
disorders, gastrointestinal and endocrine conditions, and neurological emergencies.
Each question is designed to test clinical reasoning and pathophysiological
understanding essential for nursing practice. The rationales provide in-depth
explanations of disease mechanisms, diagnostic findings, and evidence-based
interventions. This study guide serves as a robust tool for nursing students to
review critical content, understand the underlying pathophysiology, and prepare
effectively for their examination.
Section 1: Immunity, Inflammation, and Infection (Questions 1-50)
Question 1
During the vascular phase of the inflammatory response, which of the following
occurs?
A. Migration of neutrophils to the site of injury
B. Dilation of blood vessels and increased permeability
C. Proliferation of fibroblasts and collagen deposition
D. Formation of memory B cells
Answer: B. Dilation of blood vessels and increased permeability
Rationale: The vascular phase is the immediate response to injury, during which
blood vessels dilate and become more permeable. This allows fluid, immune cells,
,and proteins to reach the injured site, resulting in redness, warmth, and swelling .
Cellular chemotaxis, where neutrophils and macrophages migrate to the site,
occurs in the cellular phase that follows .
Question 2
Which type of immunity is non-specific, provides the first line of defense against
pathogens, and does not produce memory cells?
A. Adaptive immunity
B. Humoral immunity
C. Innate immunity
D. Cell-mediated immunity
Answer: C. Innate immunity
Rationale: Innate immunity is the body's first line of defense against infection. It is
a nonspecific mechanism that defends the body immediately against all types of
pathogens. Unlike adaptive immunity, it does not produce memory cells and
provides the same response upon each exposure .
Question 3
Which type of immunity is developed after exposure to an antigen and involves the
production of memory cells?
A. Innate immunity
B. Adaptive immunity
C. Passive immunity
D. Natural immunity
Answer: B. Adaptive immunity
Rationale: Adaptive immunity is the second line of defense against infection. It
develops with exposure to antigens and targets particular pathogens. This type of
immunity includes B cells (humoral immunity) and T cells (cell-mediated
immunity) that work to fight infection and create antibodies .
Question 4
A patient with a history of HIV infection has a CD4 count below 200 cells/mm3.
Which of the following is the most significant clinical consequence?
A. Increased risk of autoimmune disorders
B. Severe immunosuppression and risk of opportunistic infections
C. Increased risk of allergic reactions
D. Development of hypersensitivity reactions
,Answer: B. Severe immunosuppression and risk of opportunistic infections
Rationale: A CD4 count below 200 cells/mm3 indicates severe
immunosuppression and a diagnosis of AIDS. This significant decline in CD4 cells
leaves the patient vulnerable to opportunistic infections and malignancies.
Common findings in HIV include leukopenia (low WBC count), anemia (low RBC
and hemoglobin), and thrombocytopenia (low platelets) .
Question 5
Which laboratory finding is a marker of chronic immune activation and
inflammation in a patient with HIV?
A. Decreased C-reactive protein
B. Elevated erythrocyte sedimentation rate
C. Decreased CD4 count
D. Elevated platelet count
Answer: B. Elevated erythrocyte sedimentation rate
Rationale: C-reactive protein and erythrocyte sedimentation rate are markers of
inflammation that are elevated in HIV due to chronic immune activation and
secondary infections. These markers indicate ongoing systemic inflammation .
Question 6
During an inflammatory response, which cells are primarily responsible for
migrating to the site of injury and eliminating pathogens?
A. Erythrocytes
B. Platelets
C. Neutrophils and macrophages
D. Fibroblasts
Answer: C. Neutrophils and macrophages
Rationale: Inflammatory cells, particularly neutrophils and macrophages, migrate
to the site of injury in response to chemical signals (chemotaxis). These cells help
eliminate pathogens and damaged tissue .
Question 7
Which of the following is a characteristic of active acquired immunity?
A. It is temporary and does not involve memory cells
B. It is developed after exposure to antigens through infection or vaccination
C. It is transferred from mother to baby through breast milk
D. It involves no involvement of B or T cells
, Answer: B. It is developed after exposure to antigens through infection or
vaccination
Rationale: Active immunity is developed after antigen exposure through natural
infection or vaccination. This type of immunity is long-lasting (years to lifetime)
and involves the formation of memory B and T cells .
Question 8
A client is diagnosed with a bacterial infection. During which stage of infection
would the client experience peak symptoms including fever and severe diarrhea?
A. Incubation period
B. Prodromal stage
C. Acute stage
D. Convalescent stage
Answer: C. Acute stage
Rationale: The acute stage is the illness phase where symptoms peak, including
severe diarrhea, abdominal cramps, vomiting, and fever. For certain bacterial
strains like E. coli O157:H7, this stage can also cause hemolytic uremic syndrome
leading to kidney damage .
Question 9
Which of the following is a key difference between innate and adaptive immunity?
A. Innate immunity is highly specific, while adaptive immunity is non-specific
B. Innate immunity has long-term memory, while adaptive immunity does not
C. Innate immunity provides immediate defense, while adaptive immunity
develops over time
D. Innate immunity involves B and T cells, while adaptive immunity does not
Answer: C. Innate immunity provides immediate defense, while adaptive immunity
develops over time
Rationale: Innate immunity provides immediate defense against pathogens and is
non-specific. Adaptive immunity develops over time with exposure to antigens and
is highly specific. Innate immunity does not produce memory cells, while adaptive
immunity forms long-term memory cells .
Question 10
Which of the following is the most common route of transmission for E. coli
infections?
A. Respiratory droplets
B. Bloodborne transmission
QUESTIONS AND CORRECT ANSWERS WITH
RATIONALE LATEST UPDATE ALREADY
GRADED A+ ASSURED PASS
This comprehensive NUR 376 Exam 4 resource contains 300 unique, multiple-
choice questions with answers and detailed rationales, organized into six distinct
sections. It covers applied pathophysiology topics including immunity and
inflammation, fluid and electrolyte balance, cardiovascular and respiratory
disorders, gastrointestinal and endocrine conditions, and neurological emergencies.
Each question is designed to test clinical reasoning and pathophysiological
understanding essential for nursing practice. The rationales provide in-depth
explanations of disease mechanisms, diagnostic findings, and evidence-based
interventions. This study guide serves as a robust tool for nursing students to
review critical content, understand the underlying pathophysiology, and prepare
effectively for their examination.
Section 1: Immunity, Inflammation, and Infection (Questions 1-50)
Question 1
During the vascular phase of the inflammatory response, which of the following
occurs?
A. Migration of neutrophils to the site of injury
B. Dilation of blood vessels and increased permeability
C. Proliferation of fibroblasts and collagen deposition
D. Formation of memory B cells
Answer: B. Dilation of blood vessels and increased permeability
Rationale: The vascular phase is the immediate response to injury, during which
blood vessels dilate and become more permeable. This allows fluid, immune cells,
,and proteins to reach the injured site, resulting in redness, warmth, and swelling .
Cellular chemotaxis, where neutrophils and macrophages migrate to the site,
occurs in the cellular phase that follows .
Question 2
Which type of immunity is non-specific, provides the first line of defense against
pathogens, and does not produce memory cells?
A. Adaptive immunity
B. Humoral immunity
C. Innate immunity
D. Cell-mediated immunity
Answer: C. Innate immunity
Rationale: Innate immunity is the body's first line of defense against infection. It is
a nonspecific mechanism that defends the body immediately against all types of
pathogens. Unlike adaptive immunity, it does not produce memory cells and
provides the same response upon each exposure .
Question 3
Which type of immunity is developed after exposure to an antigen and involves the
production of memory cells?
A. Innate immunity
B. Adaptive immunity
C. Passive immunity
D. Natural immunity
Answer: B. Adaptive immunity
Rationale: Adaptive immunity is the second line of defense against infection. It
develops with exposure to antigens and targets particular pathogens. This type of
immunity includes B cells (humoral immunity) and T cells (cell-mediated
immunity) that work to fight infection and create antibodies .
Question 4
A patient with a history of HIV infection has a CD4 count below 200 cells/mm3.
Which of the following is the most significant clinical consequence?
A. Increased risk of autoimmune disorders
B. Severe immunosuppression and risk of opportunistic infections
C. Increased risk of allergic reactions
D. Development of hypersensitivity reactions
,Answer: B. Severe immunosuppression and risk of opportunistic infections
Rationale: A CD4 count below 200 cells/mm3 indicates severe
immunosuppression and a diagnosis of AIDS. This significant decline in CD4 cells
leaves the patient vulnerable to opportunistic infections and malignancies.
Common findings in HIV include leukopenia (low WBC count), anemia (low RBC
and hemoglobin), and thrombocytopenia (low platelets) .
Question 5
Which laboratory finding is a marker of chronic immune activation and
inflammation in a patient with HIV?
A. Decreased C-reactive protein
B. Elevated erythrocyte sedimentation rate
C. Decreased CD4 count
D. Elevated platelet count
Answer: B. Elevated erythrocyte sedimentation rate
Rationale: C-reactive protein and erythrocyte sedimentation rate are markers of
inflammation that are elevated in HIV due to chronic immune activation and
secondary infections. These markers indicate ongoing systemic inflammation .
Question 6
During an inflammatory response, which cells are primarily responsible for
migrating to the site of injury and eliminating pathogens?
A. Erythrocytes
B. Platelets
C. Neutrophils and macrophages
D. Fibroblasts
Answer: C. Neutrophils and macrophages
Rationale: Inflammatory cells, particularly neutrophils and macrophages, migrate
to the site of injury in response to chemical signals (chemotaxis). These cells help
eliminate pathogens and damaged tissue .
Question 7
Which of the following is a characteristic of active acquired immunity?
A. It is temporary and does not involve memory cells
B. It is developed after exposure to antigens through infection or vaccination
C. It is transferred from mother to baby through breast milk
D. It involves no involvement of B or T cells
, Answer: B. It is developed after exposure to antigens through infection or
vaccination
Rationale: Active immunity is developed after antigen exposure through natural
infection or vaccination. This type of immunity is long-lasting (years to lifetime)
and involves the formation of memory B and T cells .
Question 8
A client is diagnosed with a bacterial infection. During which stage of infection
would the client experience peak symptoms including fever and severe diarrhea?
A. Incubation period
B. Prodromal stage
C. Acute stage
D. Convalescent stage
Answer: C. Acute stage
Rationale: The acute stage is the illness phase where symptoms peak, including
severe diarrhea, abdominal cramps, vomiting, and fever. For certain bacterial
strains like E. coli O157:H7, this stage can also cause hemolytic uremic syndrome
leading to kidney damage .
Question 9
Which of the following is a key difference between innate and adaptive immunity?
A. Innate immunity is highly specific, while adaptive immunity is non-specific
B. Innate immunity has long-term memory, while adaptive immunity does not
C. Innate immunity provides immediate defense, while adaptive immunity
develops over time
D. Innate immunity involves B and T cells, while adaptive immunity does not
Answer: C. Innate immunity provides immediate defense, while adaptive immunity
develops over time
Rationale: Innate immunity provides immediate defense against pathogens and is
non-specific. Adaptive immunity develops over time with exposure to antigens and
is highly specific. Innate immunity does not produce memory cells, while adaptive
immunity forms long-term memory cells .
Question 10
Which of the following is the most common route of transmission for E. coli
infections?
A. Respiratory droplets
B. Bloodborne transmission
